SAFETY KLEEN CORP/
10-Q, 2000-01-14
HAZARDOUS WASTE MANAGEMENT
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<PAGE>



                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q


 QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934


                For the Quarterly Period Ended November 30, 1999


                         Commission File Number 1-8368


                               SAFETY-KLEEN CORP.
                               -----------------
             (Exact name of registrant as specified in its charter)


            Delaware                                         51-0228924
- -------------------------------                            ------------------
(State or other jurisdiction of                             (I.R.S. Employer
 incorporation or organization)                              Identification No.)


1301 Gervais Street Columbia, Suite 300, South Carolina                 29201
- -------------------------------------------------------               ----------
      (Address of principal executive offices)                        (Zip Code)

       (803) 933-4200 (Registrant's telephone number, including area code)
       --------------

   ---------------------------------------------------------------------------
   (Former name, address and former fiscal year, if changed since last report)

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Sections 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                            Yes   X     No ____
                                 ---

          The number of shares of the issuer's common stock outstanding as of
     January 12, 2000 was 100,637,975



<PAGE>


                                                         SAFETY-KLEEN CORP.


                                                                INDEX

<TABLE>
<CAPTION>
PART 1     FINANCIAL INFORMATION

Item 1     Financial Statements
<S>        <C>                                                                                                     <C>

           Consolidated Statements of Income for the Three Month Periods Ended
                November 30, 1999 and 1998......................................................................... 2

           Consolidated Statements of Comprehensive Income for the Three Months Ended
                November 30, 1999 and 1998......................................................................... 3

           Consolidated Balance Sheets as of November 30, 1999 and August 31, 1999................................. 4

           Consolidated Statements of Cash Flows for the Three Months  Ended
                November 30, 1999 and 1998......................................................................... 5

           Notes to Unaudited Consolidated Financial Statements for the Three Months  Ended
                November 30, 1999 and 1998......................................................................... 6


Item 2     Management's Discussion and Analysis of Financial Condition and Results of Operations  .................13


PART II    OTHER INFORMATION

Item 1     Legal Proceedings....................................................................................... 19

Item 2     Changes In Securities and Use Of Proceeds............................................................... 20

Item 4     Submission of Matters to a Vote of Security Holders..................................................... 20

Item 6     Exhibits and Reports on Form 8-K........................................................................ 21


Signatures......................................................................................................... 33

</TABLE>


                                       1
<PAGE>



                               SAFETY-KLEEN CORP.
                        CONSOLIDATED STATEMENTS OF INCOME
                     ($ in thousands, except per share data)
                                   (Unaudited)
                                                              Three Months Ended
                                                                  November 30,
                                                                  ------------
                                                              1999        1998
                                                              ----        ----
Revenues ...............................................    $408,481    $467,019
                                                            --------    --------

Expenses:
   Operating ...........................................     257,472     305,048
   Depreciation and amortization .......................      33,703      37,295
   Selling, general and administrative .................      34,250      34,500
                                                            --------    --------
     Total expenses ....................................     325,425     376,843
                                                            --------    --------
Operating income .......................................      83,056      90,176
Interest expense, net ..................................      40,135      43,084
Equity in earnings of associated company ...............       1,005        --
                                                            --------    --------
Income before income tax expense .......................      43,926      47,092
Income tax expense .....................................      19,219      19,320
                                                            --------    --------
Net income .............................................    $ 24,707    $ 27,772
                                                            ========    ========

Basic income per share:
   Net income ..........................................    $   0.25    $   0.32
                                                            ========    ========
   Weighted average common stock outstanding (000s) ....     100,637      87,844
                                                            ========    ========

Diluted income per share:
   Net income ..........................................    $   0.25    $   0.27
                                                            ========    ========
   Weighted average common stock outstanding and
     assumed conversions (000s) ........................     100,637     111,242
                                                            ========    ========




      See accompanying Notes to Unaudited Consolidated Financial Statements


                                       2
<PAGE>


                               SAFETY-KLEEN CORP.
                 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
                                ($ in thousands)
                                   (Unaudited)


                                                              Three Months Ended
                                                                  November 30,
                                                                  ------------
                                                                1999      1998
                                                                ----      ----
Net income .................................................. $24,707   $27,772
Other comprehensive income, net of tax:
   Unrealized foreign currency translation adjustment .......   1,837     1,492
                                                              -------   -------
Other comprehensive income ..................................   1,837     1,492
                                                              -------   -------
Comprehensive income ........................................ $26,544   $29,264
                                                              =======   =======




           See accompanying Notes to Unaudited Consolidated Financial Statements

                                       3
<PAGE>


                               SAFETY-KLEEN CORP.
                           CONSOLIDATED BALANCE SHEETS
                                ($ in thousands)

<TABLE>

                                                             November 30,
                                                               1999
                                                             (Unaudited)  August 31, 1999
                                                             -----------  ---------------
<S>                                                          <C>            <C>

ASSETS
   Current assets
     Cash and cash equivalents ...........................   $     5,932    $     9,173
     Trade and other accounts receivable, net of allowance
      for doubtful accounts .............................        446,917        395,009
     Inventories and supplies ............................        75,117         60,567
     Deferred income taxes ...............................        58,659         58,641
     Other current assets ................................        54,466         50,005
                                                             -----------    -----------
       Total current assets ..............................       641,091        573,395
   Long-term investments .................................        80,134         76,739
   Property, plant and equipment, net ....................     2,597,275      2,585,191
   Goodwill, net of amortization .........................     1,092,362      1,098,731
   Other assets ..........................................        39,280         35,289
                                                             -----------    -----------
     Total assets ........................................   $ 4,450,142    $ 4,369,345
                                                             ===========    ===========

LIABILITIES
   Current liabilities
     Accounts payable ....................................   $   189,408    $   172,838
     Accrued liabilities .................................       121,515        163,818
     Current portion of long-term debt ...................        91,796         85,063
                                                             -----------    -----------
       Total current liabilities .........................       402,719        421,719
   Environmental and other long-term liabilities .........       203,816        226,631
   Long-term debt ........................................     1,961,640      1,882,371
   Deferred income taxes .................................       573,145        556,372
                                                             -----------    -----------
     Total liabilities ...................................     3,141,320      3,087,093
                                                             -----------    -----------

   Commitments and contingencies .........................          --             --
                                                             -----------    -----------

STOCKHOLDERS' EQUITY
   Common stock, par value $1.00 per share; authorized
    250,000,000; issued and outstanding 100,637,975 -
    November 30, 1999; 100,635,975 - August 31, 1999 .....       100,638        100,636
   Additional paid-in capital ............................     1,342,472      1,342,448
   Accumulated other comprehensive income ................       (11,112)       (12,949)
   Accumulated deficit ...................................      (123,176)      (147,883)
                                                             -----------    -----------
     Total stockholders' equity ..........................     1,308,822      1,282,252
                                                             -----------    -----------
     Total liabilities and stockholders' equity ..........   $ 4,450,142    $ 4,369,345
                                                             ===========    ===========


          See accompanying Notes to Unaudited Consolidated Financial Statements

</TABLE>
                                       4
<PAGE>


                               SAFETY-KLEEN CORP.
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                ($ in thousands)
                                   (Unaudited)
<TABLE>


                                                                         Three Months Ended
                                                                             November 30,
                                                                             ------------
                                                                         1999           1998
                                                                         ----           ----
<S>                                                                  <C>              <C>

Cash flows from operating activities:
   Net income                                                        $   24,707       $ 27,772
   Adjustments to reconcile net income to net cash provided
     by (used in) operations:
       Equity in undistributed earnings of associated companies          (1,005)            --
       Depreciation and amortization                                     33,703         37,295
       Deferred income taxes                                             15,567         11,060
       Change in working capital and other items                       (115,648)       (19,924)
                                                                     -----------      ---------
Net cash provided by (used in) operating activities                     (42,676)        56,203
                                                                     -----------      --------

Cash flows from investing activities:
   Cash expended on business acquisitions                               (20,000)        (4,058)
   Purchases of property, plant and equipment                           (19,724)       (14,424)
   Increase in long-term investments                                     (1,422)           (53)
   Change in other, net                                                    (945)         1,090
                                                                     -----------      --------
Net cash used in investing activities                                   (42,091)       (17,445)
                                                                     -----------      ---------

Cash flows from financing activities:
   Issuance of common stock on exercise of stock options                     26             --
   Net borrowings (repayments) of long-term debt                         82,106        (45,307)
                                                                      ---------       ---------
Net cash provided by (used in) financing activities                      82,132        (45,307)
                                                                     ----------       ---------

Effect of exchange rate changes on cash                                    (606)        (5,203)
                                                                     -----------      ---------

Net decrease in cash and cash equivalents                                (3,241)       (11,752)
Cash and cash equivalents at:
   Beginning of period                                                    9,173         16,333
                                                                     ----------       --------
   End of period                                                     $    5,932       $  4,581
                                                                     ==========       ========

</TABLE>



           See accompanying Notes to Unaudited Consolidated Financial Statements

                                       5
<PAGE>


                               SAFETY-KLEEN CORP.
              Notes to Unaudited Consolidated Financial Statements
                  For the Three Months Ended November 30, 1999


NOTE 1 - BASIS OF PRESENTATION

The accompanying  unaudited interim consolidated  financial statements have been
prepared  in  accordance  with the  instructions  to Form 10-Q and Rule 10-01 of
Regulation S-X and, therefore, do not include all of the disclosures required by
generally accepted accounting principles for annual financial statements. In the
opinion  of  management,   all  adjustments  considered  necessary  for  a  fair
presentation  of the  interim  period  results  have  been  included;  all  such
adjustments are of a normal recurring  nature.  Operating  results for the three
months ended  November 30, 1999 are not  necessarily  indicative  of the results
that may be expected  for the full fiscal year  ending  August 31,  2000.  These
statements  should  be read  in  conjunction  with  the  consolidated  financial
statements, including the accounting policies, and notes thereto included in the
Registrant's  Annual Report on Form 10-K, filed with the Securities and Exchange
Commission on October 29, 1999.  Certain amounts as of August 31, 1999 have been
reclassified to conform to the current period's presentations.

NOTE 2 - SEGMENT INFORMATION

The Company is organized along its two primary business  activities - Collection
and Recovery and Treatment and Disposal.  Each of these two segments are managed
independently  from the other and report  separately to senior  management.  The
Company  evaluates  performance  based on several factors,  of which the primary
financial  measure is operating  income  before  depreciation  and  amortization
("EBITDA").  The  table  below  reflects  certain  information  relating  to the
Company's operations ($ in thousands):

                                       6

<PAGE>

<TABLE>

                                  Collection    Treatment
                                 and Recovery  and Disposal Europe     Other       Total
                                 ------------  -------------------     -----       -----
<S>                                <C>          <C>        <C>        <C>         <C>
Three Months Ended
  November 30, 1999
   Outside revenue .............   $339,571     $ 68,910   $   --     $   --      $408,481
   Intercompany revenue ........     15,227       36,095       --      (51,322)       --
   Depreciation and amortization     18,006        8,179       --        7,518      33,703
   EBITDA ......................     99,769       37,425       --      (20,435)    116,759

Three Months Ended
  November 30, 1998
   Outside revenue .............   $340,919     $ 94,400   $ 31,700   $   --      $467,019
   Intercompany revenue ........      7,532       29,071       --      (36,603)       --
   Depreciation and amortization     17,507        9,276      3,438      7,074      37,295
   EBITDA ......................    110,880       35,954      7,605    (26,968)    127,471

</TABLE>

Reconciliation  of reportable  segment  primary  financial  measure to operating
income is as follows ($ in thousands):

                                                          Three Months Ended
                                                          ------------------
                                                              November 30,
                                                              ------------
                                                         1999         1998
                                                         ----         ----
Total EBITDA                                          $ 116,759    $ 127,471
Depreciation and amortization                            33,703       37,295
                                                      ---------    ---------
   Operating income                                   $  83,056    $  90,176
                                                      =========    =========

NOTE 3 - STOCKHOLDERS' EQUITY

Changes in the components of stockholders' equity since September 1, 1999 are as
follows ($ in thousands):

<TABLE>

                                                        Accumulated
                                           Additional      Other                      Total
                                 Common     Paid-In    Comprehensive  Accumulated  Stockholders'
                                 Stock      Capital        Income       Deficit       Equity
                                 -----      -------        ------       -------       ------
<S>                           <C>          <C>          <C>           <C>           <C>
Balance, September 1, 1999    $  100,636   $1,342,448   $  (12,949)   $ (147,883)   $1,282,252
Net income for period .....         --           --           --          24,707        24,707
Issuance of shares ........            2           24         --            --              26
Cumulative foreign currency
   translation adjustment .         --           --          1,837          --           1,837
                              ----------   ----------   ----------    ----------    ----------
Balance, November 30, 1999    $  100,638   $1,342,472   $  (11,112)   $ (123,176)   $1,308,822
                              ==========   ==========   ==========    ==========    ==========
</TABLE>

NOTE 4 - STATEMENTS OF CASH FLOWS

The non-cash  transactions for the three months ended November 30, 1999 and 1998
are as follows ($ in thousands):

                                                              Three Months Ended
                                                                 November 30,
                                                                 ------------
                                                                1999       1998
                                                                ----       ----
Non-cash investing and financing activities:
   Issuance of common stock to satisfy interest payment
      due on subordinated convertible debenture                 $  --    $ 8,750
   Issuance of common stock to satisfy payment of directors'
      fees                                                         --         93
                                       7
<PAGE>

NOTE 5 - SUMMARIZED FINANCIAL INFORMATION

The Senior  Subordinated  Notes (the "Notes") issued by  Safety-Kleen  Services,
Inc.,  a  consolidated  subsidiary  of the  Company,  are jointly and  severally
guaranteed by Safety-Kleen Corp. and all wholly-owned  domestic  subsidiaries of
the  Company  on a full and  unconditional  basis.  The  Notes  contain  certain
covenants,  which,  among other things,  restrict the payment of dividends  from
Safety-Kleen Services,  Inc. and its subsidiary guarantors to Safety-Kleen Corp.
Summarized  financial  information for each of Safety-Kleen Corp.,  Safety-Kleen
Services, Inc., the subsidiary guarantors,  and the subsidiary non-guarantors on
a consolidating  basis are presented below.  Separate  financial  statements and
other disclosures  concerning the subsidiary guarantors are not included because
management believes that they are not material to investors.

                                       8
<PAGE>
<TABLE>

                                               Consolidating Condensed Balance Sheet
                                                         November 30, 1999
                                                            (Unaudited)


                                                       Safety-Kleen                 Subsidiary
                                          Safety-Kleen   Services,    Subsidiary       Non-      Elimination    Consolidated
($ in thousands) .....................        Corp.         Inc.      Guarantors    Guarantors     Entries         Totals
                                          ------------ ------------   ----------    ----------   -----------    ------------
<S>                                      <C>           <C>           <C>           <C>           <C>            <C>

ASSETS
Current assets .......................   $    22,506   $      --     $   578,842   $    56,358   $   (16,615)   $   641,091
Property, plant and
   equipment, net ....................          --            --       2,405,176       192,099          --        2,597,275
Investment in subsidiaries ...........     1,627,025     3,040,176     2,597,252             3    (7,264,456)          --
Goodwill .............................          --            --       1,035,779        56,583          --        1,092,362
Other non-current assets .............          --            --         118,036         1,378          --          119,414
                                         -----------   -----------   -----------   -----------   -----------    -----------
   Total assets ......................   $ 1,649,531   $ 3,040,176   $ 6,735,085   $   306,421   $(7,281,071)   $ 4,450,142
                                         ===========   ===========   ===========   ===========   ===========    ===========

LIABILITIES
Current liabilities ..................   $     2,460   $   117,404   $   241,457   $    58,013   $   (16,615)   $   402,719
Non-current liabilities ..............          --            --         765,270        11,691          --          776,961
Long-term debt .......................       338,249     1,568,384        15,656        39,351          --        1,961,640
Subordinated convertible
   debenture .........................          --            --            --            --            --             --
                                         -----------   -----------   -----------   -----------   -----------    -----------
   Total liabilities .................       340,709     1,685,788     1,022,383       109,055       (16,615)     3,141,320

STOCKHOLDERS'  EQUITY ................     1,308,822     1,354,388     5,712,702       197,366    (7,264,456)     1,308,822
                                         -----------   -----------   -----------   -----------   -----------    -----------
Total liabilities and
   stockholders' equity ..............   $ 1,649,531   $ 3,040,176   $ 6,735,085   $   306,421   $(7,281,071)   $ 4,450,142
                                         ===========   ===========   ===========   ===========   ===========    ===========
</TABLE>

<TABLE>
                                            Consolidating Condensed Statement of Income
                                               Three Months Ended November 30, 1999
                                                            (Unaudited)


                                                Safety-Kleen              Subsidiary
                                   Safety-Kleen   Services,   Subsidiary      Non-     Elimination  Consolidated
($ in thousands)                       Corp.        Inc.      Guarantors   Guarantors    Entries       Totals
                                       -----        ----      ----------   ----------    -------       ------
<S>                                 <C>          <C>          <C>          <C>         <C>          <C>

Total revenues ...............      $    --      $    --      $ 357,990    $  55,644   $  (5,153)    $ 408,481
Operating expenses ...........            500         --        290,942       39,136      (5,153)      325,425
                                    ---------    ---------    ---------    ---------   ---------     ---------
Operating income (loss) ......           (500)        --         67,048       16,508        --          83,056
Interest expense (income), net          7,422       30,577         (101)       2,237        --          40,135
Equity in undistributed
   earnings of subsidiaries ..         29,228       46,680        1,005         --       (75,908)        1,005
                                    ---------    ---------    ---------    ---------   ---------     ---------
Income before income
   tax expense ...............         21,306       16,103       68,154       14,271     (75,908)       43,926
Income tax expense (benefit) .         (3,401)     (13,125)      29,256        6,489        --          19,219
                                    ---------    ---------    ---------    ---------   ---------     ---------
Net income ...................      $  24,707    $  29,228    $  38,898    $   7,782   $ (75,908)    $  24,707
                                    =========    =========    =========    =========   =========     =========
</TABLE>

                                                                 9

<PAGE>

<TABLE>
                                          Consolidating Condensed Statement of Cash Flows
                                               Three Months Ended November 30, 1999
                                                            (Unaudited)


                                                   Safety-Kleen                 Subsidiary
                                     Safety-Kleen    Services,    Subsidiary        Non-     Elimination  Consolidated
($ in thousands)                         Corp.         Inc.       Guarantors    Guarantors     Entries       Totals
                                         -----         ----       ----------    ----------     -------       ------
<S>                                   <C>           <C>           <C>           <C>           <C>          <C>

Net cash provided by (used in)
   operating activities .......       $ (19,195)    $ (18,017)    $ (25,244)    $  11,806     $  7,974     $ (42,676)
                                      ----------    ----------    ----------    ----------    ---------    ----------
Cash flows from investing
   activities:
Cash expended on
   acquisition of business ....             --            --        (20,000)          --           --        (20,000)
Proceeds from sale of property,
   plant and equipment ........             --            --            --            --           --            --
Purchases of property, plant
   and equipment ..............             --            --        (18,091)       (1,633)         --        (19,724)
Increase in long-term
   investments ................             --            --         (1,422)          --           --         (1,422)
Change in other, net ..........             --            --           (946)            1          --           (945)
                                      ----------    ----------    ----------    ----------    ---------    ----------
Net cash (used in)
   investing activities .......             --            --        (40,459)       (1,632)         --        (42,091)
                                      ----------    ----------    -----------   ----------    ---------    ---------
Cash flows from financing
   activities:
Issuance of common stock on
   exercise of stock options ..              26           --            --            --           --             26
Borrowings of long-term debt ..             --            --            --            --           --            --
Repayment of long-term debt ...             --         84,894          (142)       (2,646)         --         82,106
Bank overdraft ................             --           --             --            --           --            --
Intercompany payable
   (receivable) ...............           8,939       (66,877)       65,845        (7,907)         --            --
                                      ----------    ----------    ----------    ----------    ---------    ----------
Net cash provided by (used in)
   financing activities .......           8,965        18,017        65,703       (10,553)         --         82,132
                                      ----------    ----------    -----------   ----------    ---------    ----------
Effect of exchange rate
   changes on cash ............             --            --            --           (606)         --           (606)
                                      ----------    ----------    -----------   ----------    ---------    ----------
Net decrease in cash and cash
   equivalents ................         (10,230)          --            --           (985)       7,974        (3,241)
Cash and cash equivalents at:
   Beginning of period ........           22,445          --            --          1,026      (14,298)        9,173
                                      ----------    ----------    -----------   ----------    ---------    ----------
   End of period ..............       $   12,215    $     --      $     --      $      41     $ (6,324) $      5,932
                                      ==========    ==========    ==========    ==========    =========    ==========

</TABLE>

                                                                10

<PAGE>

<TABLE>
                                               Consolidating Condensed Balance Sheet
                                                          August 31, 1999


                                           Safety-Kleen                  Subsidiary
                            Safety-Kleen     Services,     Subsidiary       Non-        Elimination   Consolidated
($ in thousands)                Corp.          Inc.        Guarantors    Guarantors       Entries        Totals
                               -----           ----        ----------    ----------       -------        ------
<S>                         <C>            <C>            <C>            <C>           <C>            <C>

ASSETS
Current assets ...........  $    24,956    $       --     $   514,319    $   48,418    $   (14,298)   $   573,395
Property, plant and
   equipment, net ........         --              --       2,397,277       187,914           --        2,585,191
Investment in subsidiaries    1,601,498      2,911,631      2,346,621           --      (6,859,750)           --
Goodwill .................         --              --       1,042,315        56,416            --       1,098,731
Other non-current assets .         --              --         110,672         1,356            --         112,028
                            -----------    -----------    -----------    ----------    ------------   -----------
   Total assets ..........  $ 1,626,454    $ 2,911,631    $ 6,411,204    $  294,104    $(6,874,048)   $ 4,369,345
                            ===========    ===========    ===========    ==========    ============   ===========

LIABILITIES
Current liabilities ......  $     7,189    $   100,208    $   277,455    $   51,165        (14,298)   $   421,719
Non-current liabilities ..         --              --         777,149         5,854            --         783,003
Long-term debt ...........      337,013      1,488,126         15,798        41,434            --       1,882,371
                            -----------    -----------    -----------    ----------    ------------   -----------
   Total liabilities .....      344,202      1,588,334      1,070,402        98,453        (14,298)     3,087,093

STOCKHOLDERS'  EQUITY ....    1,282,252      1,323,297      5,340,802       195,651     (6,859,750)     1,282,252
                            -----------    -----------    -----------    ----------    ------------   -----------
Total liabilities and
   stockholders' equity ..  $ 1,626,454    $ 2,911,631    $ 6,411,204    $  294,104    $(6,874,048)   $ 4,369,345
                            ===========    ===========    ===========    ==========    ============   ===========
</TABLE>

<TABLE>
                                            Consolidating Condensed Statement of Income
                                               Three Months Ended November 30, 1998
                                                            (Unaudited)


                                              Safety-Kleen                Subsidiary
                                Safety-Kleen     Services,  Subsidiary        Non-      Elimination   Consolidated
($ in thousands)                   Corp.           Inc.     Guarantors    Guarantors      Entries        Totals
                                   -----           ----     ----------    ----------      -------        ------
<S>                              <C>           <C>          <C>           <C>           <C>            <C>

Total revenues ...............   $    --       $    --      $ 354,362     $ 123,171     $  (10,514)    $ 467,019
Operating expenses ...........        --            --        300,382        86,975        (10,514)      376,843
                                 --------      ---------    ----------    ----------    -----------    ---------
Operating income .............       --             --         53,980        36,196            --         90,176
Interest expense (income), net      6,412        36,591        (7,400)        7,481            --         43,084
Undistributed earnings
   of subsidiaries ...........     31,504        52,800           --            --         (84,304)          --
                                 --------      ---------    ----------    ----------    -----------    ---------
Income before income
   tax expense (benefit) .....     25,092        16,209        61,380        28,715        (84,304)       47,092
Income tax expense (benefit) .     (2,680)      (15,295)       25,639        11,656            --         19,320
                                 ---------     ---------    ----------    ----------    ----------     ---------
Net income ...................   $ 27,772      $ 31,504     $  35,741     $  17,059     $  (84,304)    $  27,772
                                 =========     =========    ==========    ==========    ===========    =========

</TABLE>

                                                                11
<PAGE>

<TABLE>
                                          Consolidating Condensed Statement of Cash Flows
                                               Three Months Ended November 30, 1998
                                                            (Unaudited)


                                                    Safety-Kleen                   Subsidiary
                                     Safety-Kleen     Services,     Subsidiary        Non-      Elimination    Consolidated
($ in thousands)                        Corp.           Inc.        Guarantors     Guarantors     Entries         Totals
                                        -----           ----        ----------     ----------     -------         ------
<S>                                   <C>            <C>            <C>            <C>           <C>            <C>

Net cash provided by (used in)
   operating activities               $  (3,527)     $ (18,185)     $ 107,126      $ (29,211)    $    --        $  56,203
                                      ----------     ----------     --------       ----------    ---------      ----------
Cash flows from investing
   activities:
Cash expended on
   acquisition of business ...              --             --          (4,058)           --           --           (4,058)
Proceeds from sale of business              --             --             --             --           --              --
Proceeds from sale of
   property, plant and
   equipment .................              --             --             693            397          --            1,090
Purchases of property, plant
   and equipment .............              --             --         (10,300)        (4,124)         --          (14,424)
Increase in long-term
   investments ...............              --             --             (53)           --           --              (53)
Change in other, net .........              --             --             --             --           --              --
                                      ----------     ----------     ----------     ----------    ---------      ----------
Net cash (used in) investing
   activities ................              --             --         (13,718)        (3,727)         --          (17,445)
                                      ----------     ----------     ----------     ----------    ---------      ----------
Cash flows from financing
   activities:
Issuance of common stock on
   exercise of stock options .              --             --             --             --           --              --
Borrowings of long-term debt .              --             --             --             --           --              --
Repayment of long-term debt ..              --         (44,611)          (696)           --           --          (45,307)
Bank financing fees ..........              --             --             --             --           --              --
Intercompany payable
   (receivable) ..............            3,527         62,796        (96,624)        30,301          --              --
                                      ----------     ----------     ----------     ----------    --------       ----------
Net cash provided by (used in)
   financing activities ......            3,527         18,185        (97,320)        30,301          --          (45,307)
                                      ----------     ----------     ----------     ----------    ---------      ----------
Effect of exchange rate
   changes on cash ...........              --             --             --          (5,203)         --           (5,203)
                                      ----------     ----------     ----------     ----------    ---------      ----------
Net decrease in cash and
   cash equivalents ..........              --             --          (3,912)        (7,840)         --          (11,752)
Cash and cash equivalents at:
   Beginning of period .......              --             --           4,343         11,990          --           16,333
                                      ----------     ----------     ---------      ----------    ---------      ----------
   End of period .............        $     --       $     --       $     431      $   4,150     $    --        $   4,581
                                      ==========     ==========     ==========     ==========    =========      ==========

</TABLE>
                                                                12

<PAGE>

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

         The following  discussion  and analysis  should be read in  conjunction
with the Company's  consolidated  financial statements and related notes thereto
included elsewhere herein.

         The following  discussion  and analysis  includes  statements  that are
considered  forward-looking  based on the Company's  expectations  and, as such,
these  statements  are subject to  uncertainty  and risk.  See "Factors That May

Affect Future Results" below.

Results of Operations:

Three Months Ended  November 30, 1999 compared with Three Months Ended  November
30, 1998

Operating results are as follows ($ in millions):

                                             Three Months Ended November 30,
                                                  1999               1998
                                                  ----               ----

Revenues ..............................   $ 408.5    100.0%   $ 467.0    100.0%
Operating expense .....................     257.5     63.1%     305.0     65.3%
Depreciation and amortization .........      33.7      8.2%      37.3      8.0%
Selling, general and administrative ...      34.2      8.4%      34.5      7.4%
                                          -------    ------   -------    ------
Operating income ......................   $  83.1     20.3%   $  90.2     19.3%
                                          =======    ======   =======    ======


Revenues

Components of revenue ($ in millions):      Three Months Ended November 30,
                                            -------------------------------
                                                   1999             1998
                                            ---------------   --------------
Collection and Recovery Services

    Industrial Services .................   $ 193.6    47%    $ 206.2    44%
    Commercial and Institutional Services     146.0    36%      134.7    29%
                                            -------   ----     ------   ----
Total Collection and Recovery Services ..     339.6    83%      340.9    73%

Treatment and Disposal Services .........      68.9    17%       94.4    20%

European Operations .....................       0.0     0%       31.7     7%
                                            -------   ----     ------   ----

     Total revenue ......................   $ 408.5   100%    $ 467.0   100%
                                            =======   ====    =======   ====


                                       13
<PAGE>

         Revenues  decreased  $58.5 million,  or 12.5%,  during the three months
ended  November 30, 1999,  compared to the three months ended November 30, 1998.
Revenue from collection and recovery services to industrial  customers decreased
$12.6 million, or 6.1%, while collection and recovery services to commercial and
institutional customers increased $11.3 million, or 8.4%. Revenue from treatment
and disposal  services  decreased  $25.5  million,  or 27%,  primarily  due to a
reduction  in the  level  of  activity  at the  Company's  harbor  dredging  and
treatment operations.

         The   Company   eliminates   inter-company   revenues   in   presenting
consolidated  financial results.  The majority of such eliminations occur at the
Company's  disposal  facilities  which  receive waste streams from the Company's
collection and recovery services network.

         Management's estimate of the components of the changes in the Company's
consolidated revenue is as follows:

                                                 Percentage Increase (Decrease)
                                                 Three Months Ended November 30,

                                                         1999 over 1998

Expansion of customer base by acquisition                     1.7%
Other, primarily through volume and price changes            (8.0%)
Divestitures and closures                                    (6.8%)
Foreign exchange rate changes                                 0.6%
                                                             ------
     Total                                                  (12.5%)

         The revenue increase from acquisitions related to a used oil collection
business acquired on September 1, 1999.  Revenues from existing  operations were
impacted by a  significant  reduction in the level of activity in the  Company's
harbor  dredging and  treatment  operations  within the  treatment  and disposal
component.  Revenues from these  operations of nil in the current period compare
to revenues of $19.4 million in the prior year period. Excluding harbor dredging
and treatment  operations,  price and volume  changes from  existing  operations
would have declined by 4.3%,  due primarily to reductions in event work activity
in the treatment and disposal and  industrial  services  components.  Prior year
revenues included  contributions  from the Company's  European  Operations which
were  deconsolidated  as of November  30,  1998.  An increase in revenues due to
foreign exchange rate changes resulted from a relative  increase in the Canadian
dollar translation rate.

         It is expected  that  revenues will be lower for the three month period
ending  February 29, 2000  compared to the three months ended  November 30, 1999
due to the traditional  seasonality  impact of fewer working days and a decrease
in customer activity  associated with holiday down-time within their operations.
In addition,  the  revenues  for the three  months  ended  February 28, 1999 had
previously  included  the  predecessor   Safety-Kleen's   year-end  sales  drive
(December  31),  which drive now coincides  with the Company's  August 31 fiscal
year end.


                                       14
<PAGE>


         For  the  third  and  fourth  quarters  of  fiscal  2000,  the  Company
anticipates  moderate  revenue  growth of 1.5% to 1.75%  adjusted for  differing
business days (on a  quarter-to-quarter  basis) in its  collection  and recovery
line of business. The Company also expects to generate revenues of approximately
$300 million in fiscal 2000 in its treatment and disposal line of business.  The
Company's  revenue estimates are based on current market conditions and could be
impacted by any of the factors  described  in  "Factors  That May Affect  Future
Results".

Operating Expense

         Operating expenses decreased $47.5 million,  or 15.6%, during the three
months ended November 30, 1999,  compared to the three months ended November 30,
1998. The reduction was primarily  attributable  to the  deconsolidation  of the
Company's European Operations and the reduction in harbor dredging and treatment
operations.  As a percentage of revenue,  operating  expense  decreased to 63.1%
from 65.3% in the prior year,  primarily  due to the  increased  utilization  of
existing  facilities  and other  operational  assets,  acquisition  related cost
reduction measures,  primarily personnel related costs, and an decrease in lower
margin business.

Depreciation and Amortization Expense

         Depreciation and amortization  expense decreased $3.6 million, or 9.6%,
during the three months ended November 30, 1999, compared to the prior year. The
decrease was  primarily  attributable  to the  deconsolidation  of the Company's
European Operations.  As a percentage of revenue,  depreciation and amortization
expense was 8.2%, compared to 8.0% in the prior year.

Selling, General and Administrative Expense

         Selling, general and administrative expenses decreased $0.3 million, or
0.9%, during the three months ended November 30, 1999, versus the prior year. As
a percentage of revenue,  selling, general and administrative expenses increased
to 8.4% from 7.4% in the prior  year due to  increased  selling  costs and lower
than average administrative costs for the deconsolidated European Operations.

Interest Expense

         Interest  expense  decreased  $4.0 million,  or 9.1%,  during the three
months ended November 30, 1999, over the prior year as a result of the reduction
in long term debt outstanding.

Equity in Earnings of Associated Companies

         On December 23,  1998,  the Company sold a 56% interest in its European
operations.   The  Company's  remaining  interest  in  the  European  Operations
contributed  $1.0 million on an equity basis for the three months ended November
30, 1999. The Company intends to permanently  reinvest its share of the earnings
of the European Operations.


                                       15
<PAGE>

Income Tax Expense

         The effective tax rate of 45% on income before  restructuring and other
charges,  equity earnings and taxes ($43.1 million) has increased over the prior
year effective  rate primarily due to the sale of 56% of the Company's  European
operations.  The European operations had an effective tax rate below that of the
overall Company average.


FACTORS THAT MAY AFFECT FUTURE RESULTS

         This report  contains  various  forward-looking  statements  within the
meaning of the  Private  Securities  Litigation  Reform  Act of 1995,  including
financial,  operating  and  other  projections.  These  statements  are based on
current plans and  expectations of the Company and involve a number of risks and
uncertainties   that  could  cause  actual  future  activities  and  results  of
operations   to  be   materially   different   from   those  set  forth  in  the
forward-looking statements.

         Important  factors that could cause actual  results to differ  include,
among others,  risks associated with  acquisitions and fluctuations in operating
results  because  of  acquisitions;  impact  of new  and  existing  competitors;
successful   integration  of  the  former  Laidlaw  Environmental  Services  and
Safety-Kleen  industrial sales forces;  implementation  of a common  operational
management  information  system in the  industrial  services and  treatment  and
disposal lines of business;  general level of economic activity in North America
remaining  constant;  the ability of the Company to  effectively  introduce  new
product  offerings;  the ability of the Company to increase cash  collections of
accounts receivable; changes in applicable government regulations (environmental
and other),  the impact of  litigation,  and other factors  described in Part I,
Item 1 of the  Company's  Annual Report on Form 10-K for the Twelve Months Ended
August 31, 1999. As a result of these factors,  the Company's revenue and income
could vary significantly from quarter to quarter, and past financial performance
should not be considered a reliable indicator of future performance.

CAPITALIZATION

         On  November  24,  1998,   the   Company's   shareholders   approved  a
one-for-four reverse stock split which became effective on November 30, 1998. As
a result,  shareholders received one share of Safety-Kleen common stock for each
four shares previously held.

         On November  15, 1998,  the Company  issued  635,208  shares to satisfy
interest due on the subordinated convertible debenture.

         On May 17, 1999, the Company issued 533,333 shares to satisfy  interest
due on the subordinated convertible debenture.


                                       16
<PAGE>

         On May 17, 1999, the Company issued $225 million 9.25% Senior Notes due
2009 (the "Senior Notes") in a private  offering.  Net proceeds from the sale of
the Senior  Notes,  after the  underwriting  discount and other  expenses,  were
approximately  $214  million.  The net  proceeds  were used to finance  the cash
portion of the purchase price for the repurchase of the subordinated convertible
debenture (the  "Repurchase").  The purchase  price also included  approximately
11.3 million common shares of the Company. The issuance of the common shares was
approved at a Special  Meeting of the  stockholders of the Company on August 27,
1999.

         On August  27,  1999,  the  Company  issued  376,858  shares to satisfy
interest  due,  through  the  date  of  the  repurchase,   on  the  subordinated
convertible debenture.

LIQUIDITY

         Total cash used in  operations  during the three months ended  November
30, 1999 was $42.7 million.  This was composed of $66.0 million from  operations
before financing working capital requirements of $101.7 million and $7.0 million
related to spending on acquisition environmental liabilities.

         The  Company's  primary  sources  of  liquidity  are  cash  flows  from
operations,  existing cash and short-term  investments of $5.9 million,  and the
unused cash portion of the Senior Credit  Facility's  revolver tranche of $198.0
million.  The available  portion of this revolver tranche varies from quarter to
quarter.

         The Company's Senior Credit Facility contains negative, affirmative and
financial  covenants  customarily  found in  credit  agreements  for  financings
similar to the financing  provided under the Senior Credit  Facility,  including
covenants  limiting  annual capital  expenditures,  restricting  quarterly debt,
guaranties  and lien amounts,  mergers and  consolidations,  sales of assets and
payment of dividends. The Company was in compliance with all of its covenants at
November 30, 1999.

         The Company's 1999 Notes are effectively  subordinated to the Company's
subsidiaries'  indebtedness.   The  payment  of  dividends,  advances  or  other
distributions from the Company's subsidiaries to the Company, as may be required
to service  the  Senior  Notes,  may be  restricted  as they are  subject to the
various indentures, covenants and other obligations of the subsidiaries.

         Trade and other accounts  receivable  represent the largest  portion of
current  assets,  totaling $446.9 million at November 30, 1999. The average days
sales outstanding ("DSO") increased to 93 days, from 82 days at August 31, 1999.
The DSO increase and the related  increase in working capital was due to billing
and collections systems integration and modifications.  The Company expects days
sales  outstanding  to  decrease  over  the  balance  of  fiscal  2000 as  these
integration  issues are resolved and as systems  modifications  become complete.
The  Company is  targeting  reducing  trade  accounts  receivable  by $15 to $20
million during its second quarter of fiscal 2000.


                                       17
<PAGE>

         The Company  expects to fund capital  expenditures,  debt repayment and
environmental liability requirements from cash flows from operations.

         The Company has not paid  dividends  during the reported  periods,  and
does not intend to pay dividends in the foreseeable  future.  Additionally,  the
Senior  Credit  Facility  prohibits  the  payment of  dividends  (unless a given
percentage of lenders otherwise agree).


CAPITAL EXPENDITURES AND CAPITAL RESOURCES

         Investing activities for the three months ended November 30, 1999, used
cash of $42.1  million.  Net  expenditures  for the purchase of fixed assets for
normal replacement requirements and increases in services were $19.7 million and
$20.0  million was spent  acquiring  new  businesses.  The  Company's  projected
capital  expenditures for fiscal 2000 are approximately $75 to $80 million.  The
Company believes that it has adequate resources to finance these expenditures.


YEAR 2000 READINESS DISCLOSURE

            The Year 2000 ("Y2K") issue is the result of computer programs using
a  two-digit  format,  as opposed to four  digits,  to indicate  the year.  Such
computer  programs will be unable to interpret dates beyond the year 1999, which
could cause a system failure or other computer errors, leading to disruptions in
operations.  The  Company  developed  a  three-phase  program  for  Y2K  systems
compliance.  Phase I identified  those systems with respect to which the Company
had exposure to Y2K issues.  Phase II was the development and  implementation of
action  plans  for  Y2K  compliance.  Phase  III was the  final  testing  of the
appropriate major areas of exposure to ensure compliance.

            All three phases were completed by December 31, 1999, and to January
14, 2000,  the Company is not aware of any  significant  problems,  or financial
losses, associated with Y2K issues.

            Given the short  period of time that has elapsed  post  December 31,
1999,  it is possible  that the Company and its major vendors might not have yet
identified or become aware of some Y2K issues and the related implications.

            While we believe the  identification  of  significant  Y2K issues is
unlikely at this time, a possible  worst case scenario might include (a) delays,
inaccuracies or other difficulties with respect to billing customers or the loss
of customer records, (b) our inability to run one or more of our incinerators or
recycling  facilities,  (c) our key vendors  not being able to supply  goods and
services on a timely  basis,  and (d) the  inability  of our  customers to remit
payment for services  rendered on a timely basis. The financial impact of any or
all of the above worst case  scenarios  has not been and cannot be  estimated by
management due to the numerous  uncertainties and variables associated with such
scenarios.


                                       18
<PAGE>


                           PART II - OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS.

GENERAL

         The business of the Company's  hazardous and industrial  waste services
is continuously  regulated by federal,  state,  provincial and local  provisions
that have been enacted or adopted,  regulating  the discharge of materials  into
the environment or primarily for the purpose of protecting the environment.  The
nature of the Company's businesses results in its frequently becoming a party to
judicial or  administrative  proceedings  involving  all levels of  governmental
authorities and other interested parties. The issues that are involved generally
relate to  applications  for  permits  and  licenses  by the  Company  and their
conformity with legal requirements and alleged technical  violations of existing
permits and  licenses.  The Company  does not believe  that these issues will be
material to the  Company's  operations or financial  condition.  At November 30,
1999,  subsidiaries  of the Company  were  involved in four  proceedings  of the
latter type relating  primarily to activities  at waste  treatment,  storage and
disposal  facilities  where the  Company  believes  sanctions  involved  in each
instance may exceed $100,000. The Company believes that the ultimate disposition
of these issues will not have a  materially  adverse  effect upon the  Company's
consolidated financial position or results of operations.

         From time to time,  the  Company  is named as a  defendant  in  various
lawsuits  arising in the  ordinary  course of  business,  including  proceedings
wherein  persons  claim injury  resulting  from the use of the  Company's  parts
cleaner equipment and/or cleaning  products,  other matters  involving  personal
injury and property  damage claims and  employment-related  claims.  A number of
such legal proceedings are currently pending in various courts and jurisdictions
throughout North America.  Based on the Company's assessment of known claims and
its historical claims payment pattern, and discussions with internal and outside
legal counsel and risk management personnel,  the Company believes that there is
no proceeding  pending against the Company  relating to such matters arising out
of the ordinary course of business that, if resolved against the Company,  would
have a  materially  adverse  effect upon the  Company's  consolidated  financial
position or results of operations.

         In the United States, CERCLA imposes financial liability on persons who
are  responsible for the release of hazardous  substances into the  environment.
Present  and  past  owners  and  operators  of  sites  which  release  hazardous
substances,  as well as generators and  transporters of the waste material,  are
jointly and severally liable for remediation costs and environmental  damage. At
November  30,  1999,  the Company had been  notified  that it was a  potentially
responsible  party  in  connection  with 49  locations  in its  hazardous  waste
management and other businesses. The Company continually reviews its status with
respect to each  location  and the  extent of its  alleged  contribution  to the
volume of waste at the location,  the available evidence  connecting the Company
to that location,  and the numbers and financial  soundness of other potentially
responsible parties at the location. Based upon presently available information,
the  Company  does not  believe  that  potential  liabilities  arising  from its
involvement with these locations will be material to the Company's operations or
financial condition.



                                       19
<PAGE>



LAMBTON HAZARDOUS WASTE LANDFILL, ONTARIO, CANADA

         On September 3, 1999, The Company's  Lambton  hazardous  waste landfill
facility in Ontario,  Canada (the "Facility"),  discovered an upwelling of water
and natural gas in a disposal cell designated as Sub-cell 3. While in the course
of trying to  determine  the  source  and cause of the  upwelling,  the  Company
informed  the  Ontario  Ministry  of  Environment  and  Energy  ("MOE")  of  the
situation. On November 2, 1999, MOE issued a Field Order finding that the upward
migration  of water and methane gas onto the  landfill  cell floor  necessitated
that the  Company  not  utilize  the  newly  constructed  Sub-cell  3 for  waste
disposal.  On December  14, 1999 the MOE issued a second  Field Order  requiring
that  Sub-cell 4,  another  newly  constructed  cell,  not be utilized for waste
disposal after MOE officials  observed what they believed to be significant  gas
evolution  from the  bottom  of the  cell.  On  December  21,  1999  independent
technical  experts and Company  professionals  presented to MOE  testimony and a
report  addressing MOE concerns.  Following the hearing and  testimony,  the MOE
issued a third Field Order on December 24, 1999 revoking the two previous orders
and  allowing  the  utilization  of  Sub-Cell  4 for  waste  disposal  under new
conditions  which  included  that;  (1) no waste in  Sub-Cell 4 was to be placed
below an  elevation  of 182 meters  above mean sea level and (2) with respect to
Sub-Cell 3 the Company will provide a report for the approval of the Director of
the MOE which provides the plan for identifying potential areas of gas and water
venting,  the proposed  measures to remediate all areas  identified  and further
steps to protect the integrity of the sub-cell.

         These events at the Facility have  resulted in an immaterial  financial
loss due to the temporary  closure of the landfill and may result in a reduction
in cell and overall landfill  capacity which,  depending upon the level of waste
disposal at the  Facility  may (1)  decrease  operating  income  margins and (2)
require a permit expansion earlier than previously anticipated.

         Other than as herein reported there have been no additional significant
legal proceedings nor any material changes in the legal proceedings  reported in
PART II, Item 3 of the  Registrant's  Report on Form 10-K for the twelve  months
ended August 31, 1999.


ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS.

         On October 5, 1999,  the Board of Directors  of the Company  declared a
dividend  distribution  of one Common Share Purchase  Right on each  outstanding
share of Common Stock  payable on or about October 25, 1999 to  shareholders  of
record on such date. For a further description of the Rights, see the Summary of
Rights to Purchase  Common  Stock which was  attached as Exhibit B to the Rights
Agreement and attached as Exhibit 1 to the Company's  Current Report on Form 8-K
filed on October 15, 1999.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

         The Company's  Annual Meeting of Shareholders  was held on November 30,
1999.  At  the  meeting,  the  Company's  shareholders  (i)  elected  the  three
individuals who had been nominated to be members of the Board of Directors, (ii)
approved  an  increase  of the number of shares  available  under the 1997 stock
option plan by 1,000,000  shares;  and (iii) approved the Executive  Bonus Plan.
The following table sets forth the voting results:

                                       20
<PAGE>

                              For        Against        Withheld     Abstentions
                              ---        -------        --------     -----------
Election of Directors:

John W. Rollins, Sr.        89,253,134        N/A     1,830,632              N/A
David E. Thomas, Jr.        89,247,094        N/A     1,836,672              N/A
James R. Bullock            89,252,725        N/A     1,831,041              N/A

Employee Option Increase    84,599,137   6,200,874          N/A          283,755

Executive Bonus Plan        88,981,816   1,672,847          N/A          429,103

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K.

     (a)   Exhibits:

     (3)(a) Restated  Certificate of  Incorporation of the Company dated May 13,
1997 and Amendment to Certificate of  Incorporation  dated May 15, 1997 filed as
Exhibit 3(a) to the  Registrant's  Form 10-Q for the Quarter  ended May 31, 1997
and incorporated herein by reference.

     (3)(a)(i) Certificate of Correction Filed to Correct a Certain Error in the
Restated and Amended  Certificate of  Incorporation of the Company dated October
15, 1997 filed as Exhibit  (3)(a)(i) to the  Registrant's  Form 10-K-405 for the
Year ended August 31, 1997, and incorporated herein by reference.

     (3)(a)(ii)   Certificate  of  Amendment  to  the  Restated  Certificate  of
Incorporation   of  the  Company  dated  November  25,  1998  filed  as  Exhibit
(3)(a)(iii)  to the  Registrant's  Form 10-Q for the quarter ended  November 30,
1998 and incorporated herein by reference.

     (3)(a)(iii)  Certificate  of  Amendment  to  the  Restated  Certificate  of
Incorporation of the Company dated November 30, 1998 filed as Exhibit (3)(a)(iv)
to the  Registrant's  Form 10-Q for the  quarter  ended  November  30,  1998 and
incorporated herein by reference.

     (3)(b) Amended and Restated Bylaws of the Company filed as Exhibit 4(ii) to
the Registrant's Current Report on Form 8-K dated July 29, 1997 and incorporated
herein by reference.

     (4)(a)  Indenture  dated as of May 29, 1998 between LES, Inc. (a subsidiary
of the Registrant),  Registrant, subsidiary guarantors of the Registrant and The
Bank of Nova Scotia Trust  Company of New York, as trustee filed as Exhibit 4(b)
to the Registrant's Form S-4 Registration Statement No. 333-57587 filed June 24,
1998 and incorporated herein by reference.

     (4)(b) First Supplemental Indenture effective as of November 15, 1998 among
Safety-Kleen Services, Inc. the Registrant, SK Europe, Inc. and The Bank of Nova
Scotia  Trust  Company of New York,  as trustee  filed as Exhibit  (4)(f) to the
Registrant's  Form S-4 Registration  Statement No. 333-82689 filed July 12, 1999
and incorporated herein by reference.

     (4)(c)  Indenture dated as of May 17, 1999 between  Registrant and the Bank
of Nova Scotia Trust Company of New York, as trustee filed as Exhibit  (4)(b) to
the Registrant's  Form S-4  Registration

                                       21
<PAGE>

Statement No. 333-82689 filed July 12,1999 and incorporated herein by reference.

     (4)(d)  Second  Supplemental  Indenture  effective  as of May 7, 1999 among
Safety-Kleen  Services,  Inc. the  Registrant,  SK Services,  L.C.,  SK Services
(East),  L.C. and The Bank of Nova Scotia Trust  Company of New York, as trustee
filed as Exhibit (4)(d) to the Registrant's Form 10-K filed October 29, 1999 and
incorporated herein by reference.

     (4)(e)  Registration  Rights  Agreement  dated as of May 17,  1999  between
Registrant and TD Securities,  NationsBanc Montgomery Securities LLC and Raymond
James & Associates,  Inc. filed as Exhibit (4)(a) to the  Registrant's  Form S-4
Registration Statement No. 333-82689 filed July 12, 1999 and incorporated herein
by reference.

     (4)(f)  Amended and Restated  Credit  Agreement  among Laidlaw  Chem-Waste,
Inc.,  Laidlaw  Environmental  Services (Canada) Ltd.,  Toronto Dominion (Texas)
Inc.,  The  Toronto-Dominion  Bank, TD Securities  (USA) Inc.,  The Bank of Nova
Scotia,   NationsBank,   N.A.  and  The  First  National  Bank  of  Chicago  and
NationsBank,  N.A.  as  Syndication  Agent  dated as of April 3, 1998,  filed as
Exhibit 4(f) to the  Registrant's  Form 10-Q for the quarter ended  February 28,
1999, and incorporated herein by reference.

     (4)(g)  Supplement  to the  Amended and  Restated  Credit  Agreement  among
Laidlaw Chem-Waste,  Inc., Laidlaw Environmental Services (Canada) Ltd., Toronto
Dominion (Texas) Inc., The Toronto-Dominion  Bank, TD Securities (USA) Inc., The
Bank of Nova Scotia,  NationsBank,  N.A. and The First  National Bank of Chicago
and NationsBank,  N.A. as Syndication  Agent dated as of April 3, 1998, filed as
Exhibit 4(e) to a subsidiary of the Registrant's Form S-4 Registration Statement
No. 333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(h)  Waiver and First  Amendment  to the  Amended  and  Restated  Credit
Agreement  dated as of May 15,  1998  among  LES,  Inc.,  Laidlaw  Environmental
Services (Canada) Ltd., the Lenders, Toronto Dominion (Texas), Inc., The Toronto
Dominion Bank, TD Securities  (USA) Inc., The Bank of Nova Scotia,  NationsBank,
N.A., The First National Bank of Chicago and Wachovia Bank filed as Exhibit 4(f)
to a  subsidiary  of  the  Registrant's  Form  S-4  Registration  Statement  No.
333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(i) Commitment to Increase Supplement to the Amended and Restated Credit
Agreement  dated as of June 3,  1998  among  LES,  Inc.,  Laidlaw  Environmental
Services (Canada) Ltd., the Lenders, Toronto Dominion (Texas), Inc., The Toronto
Dominion Bank, TD Securities  (USA) Inc., The Bank of Nova Scotia,  NationsBank,
N.A., The First National Bank of Chicago and Wachovia Bank filed as Exhibit 4(g)
to a  subsidiary  of  the  Registrant's  Form  S-4  Registration  Statement  No.
333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(j) Second  Amendment to the Amended and Restated Credit Agreement dated
as of November 20, 1998 among  Safety-Kleen  Services,  Inc.  (formerly known as
LES,  Inc.),  Safety-Kleen  Services  (Canada) Ltd.  (formerly  known as Laidlaw
Environmental  Services  (Canada) Ltd.), the Lenders,  Toronto Dominion (Texas),
Inc.,  The Toronto  Dominion  Bank, TD Securities  (USA) Inc.,  The Bank of Nova
Scotia, NationsBank,  N.A., The First National Bank of Chicago and Wachovia Bank
N.A.,  filed as Exhibit  (4)(j) to the  Registrant's  Form 10-Q for the  quarter
ended February 28,

                                       22
<PAGE>

1999 and incorporated herein by reference.

     (4)(k)  Waiver and Third  Amendment  to the  Amended  and  Restated  Credit
Agreement dated as of May 6, 1999 among  Safety-Kleen  Services,  Inc. (formerly
known as LES,  Inc.),  Safety-Kleen  Services  (Canada) Ltd.  (formerly known as
Laidlaw  Environmental  Services  (Canada) Ltd.), the Lenders,  Toronto Dominion
(Texas),  Inc., The Toronto Dominion Bank, TD Securities (USA) Inc., The Bank of
Nova Scotia, NationsBank,  N.A., The First National Bank of Chicago and Wachovia
Bank N.A.  filed as Exhibit  (4)(l) to the  Registrant's  Form S-4  Registration
Statement  No.  333-82689  filed  July  12,  1999  and  incorporated  herein  by
reference.

     (4)(l) Registration Rights Agreement dated May 15, 1997 between Registrant,
Laidlaw  Transportation,  Inc.  and Laidlaw  Inc. the form of which was filed as
Exhibit B to Annex A to the Registrant's  Definitive Proxy Statement on Form DEF
14A, filed on May 1, 1997 and incorporated herein by reference.

     (4)(m) Indenture dated as of May 1, 1993 between the Industrial Development
Board  of  the   Metropolitan   Government  of  Nashville  and  Davidson  County
(Tennessee)  and  NationsBank of Tennessee,  N.A.,  filed as Exhibit 4(f) to the
Registrant's  Form 10-Q for the Quarter  ended May 31,  1997,  and  incorporated
herein by reference.

     (4)(n) Indenture of Trust dated as of August 1, 1995 between Tooele County,
Utah and West One Bank,  Utah,  now known as U.S.  Bank,  as  Trustee,  filed as
Exhibit 4(h) to the  Registrant's  form 10-Q for the Quarter ended May 31, 1997,
and incorporated herein by reference.

     (4)(o)  Indenture of Trust dated as of July 1, 1997 between  Carbon County,
Utah and U.S. Bank, a national banking association, as Trustee, filed as Exhibit
4(i) to the  Registrant's  Form 10-Q for the  Quarter  ended May 31,  1997,  and
incorporated herein by reference.

     (4)(p)  Indenture of Trust dated as of July 1, 1997 between  Tooele County,
Utah and U.S. Bank, a national banking association, as Trustee, filed as Exhibit
4(j) to the  Registrant's  Form 10-Q for the  Quarter  ended May 31,  1997,  and
incorporated herein by reference.

     (4)(q)  Indenture  of Trust  dated as of July 1,  1997  between  California
Pollution  Control  Financing  Authority  and  U.S.  Bank,  a  national  banking
association, as Trustee, filed as Exhibit 4(k) to the Registrant's Form 10-Q for
the Quarter ended May 31, 1997, and incorporated herein by reference.

     (4)(r)  Promissory  Note  dated  May 15,  1997  for  $60,000,000  from  the
Registrant to Westinghouse  Electric  Corporation,  filed as Exhibit 4(n) to the
Registrant's  Form 10-Q for the Quarter  ended May 31,  1997,  and  incorporated
herein by reference.

     (4)(s)  Letter  dated May 7, 1999 from  Toronto-Dominion  (Texas)  Inc. (as
assignee of Westinghouse  Electric  Corporation) and agreed to by the Registrant
and Laidlaw Inc.  amending the terms of the  Promissory  Note dated May 15, 1997
(as referenced in Exhibit  (4)(r)) filed as Exhibit  (4)(u) to the  Registrant's
Form  S-4  Registration   Statement  No.  333-82689  filed  July  12,  1999  and
incorporated herein by reference.

                                       23
<PAGE>

     (4)(t)   Guaranty   Agreement  dated  May  15,  1997  by  Laidlaw  Inc.  to
Westinghouse  Electric  Corporation  guaranteeing  Promissory Note dated May 15,
1997 (as referenced in Exhibit (4)(s)) from Registrant to Westinghouse  Electric
Corporation),  filed  as  Exhibit  4(o) to the  Registrant's  Form  10-Q for the
Quarter ended May 31, 1997, and incorporated herein by reference.

     (4)(u) Collateral Account Pledge and Security Agreement dated as of May 17,
1999 between the Registrant,  the Bank of Nova Scotia Trust Company of New York,
as escrow  agent  and the Bank of Nova  Scotia  Trust  Company  of New York,  as
trustee,  filed as  Exhibit  (4)(d) to the  Registrant's  Form S-4  Registration
Statement  No.  333-82689  filed  July  12,  1999  and  incorporated  herein  by
reference.

     (4)(v)  Registration  Rights Agreement dated as of October 15, 1999 between
the Registrant  and EquiServe  Trust  Company,  N.A., as Rights Agent,  filed as
Exhibit (c)1 to the Registrant's Current Report on Form 8-K filed on October 15,
1999 and incorporated herein by reference.

     (4)(w) Other  instruments  defining the rights of holders of  nonregistered
debt of the  Registrant  have been  omitted  from this  exhibit list because the
amount of debt  authorized  under any such instrument does not exceed 10% of the
total assets of the Registrant and its  subsidiaries.  The Registrant  agrees to
furnish a copy of any such instrument to the Commission upon request.

     (10)(a)  Agreement  and Plan of Merger  dated as of March  16,  1998 by and
among  Registrant,  LES Acquisition,  Inc., and Safety-Kleen  Corp.  included as
Annex A of  Safety-Kleen's  Revised  Amended  Prospectus  on Form 14D-9 filed as
Exhibit 62 to  Safety-Kleen's  Amendment  No. 28 to Schedule  14-9A on March 17,
1998, and incorporated herein by reference.

     (10)(b) Stock Purchase Agreement between Westinghouse  Electric Corporation
(Seller) and Rollins Environmental Services, Inc. (Buyer) for National Electric,
Inc. dated March 7, 1995 filed as Exhibit 2 to the  Registrant's  Current Report
on Form 8-K filed on June 13, 1995 and incorporated herein by reference.

     (10)(c)  Second  Amendment to Stock  Purchase  Agreement (as  referenced in
Exhibit  (10)(b)  above),  dated  May  15,  1997  among  Westinghouse   Electric
Corporation,  Rollins  Environmental  Services,  Inc. and Laidlaw Inc., filed as
Exhibit 4(m) to the  Registrant's  Form 10-Q for the Quarter ended May 31, 1997,
and incorporated herein by reference.

     (10)(d) Rollins  Environmental  Services,  Inc. 1982 Incentive Stock Option
Plan filed with  Amendment  No. 1 to the  Company's  Registration  Statement No.
2-84139 on Form S-1 dated June 24, 1983 and incorporated herein by reference.

     (10)(e) Rollins Environmental  Services,  Inc. 1993 Stock Option Plan filed
with the Company's Proxy  Statement for the Annual Meeting of Shareholders  held
January 28, 1994 and incorporated herein by reference.

     (10)(f)  Registrant's  1997 Stock Option Plan,  filed as Exhibit 4.4 to the
Company's  Registration  Statement No.  333-41859 on Form S-8 dated December 10,
1997 and incorporated herein by reference.

                                       24
<PAGE>

     (10)(g) First Amendment to Registrant's 1997 Stock Option Plan.

     (10)(h) Registrant's  Director's Stock Option Plan, filed as Exhibit 4.5 to
the Company's  Registration  Statement No.  333-41859 on Form S-8 dated December
10, 1997 and incorporated herein by reference.

     (10)(i) First Amendment to Registrant's Director's Stock Option Plan.

     (10)(j)  Stock  Purchase   Agreement  dated  February  6,  1997  among  the
Registrant, Laidlaw Inc., and Laidlaw Transportation, Inc. filed as Exhibit A to
Annex A to the Definitive  Proxy  Statement on Form DEF 14A filed on May 1, 1997
and incorporated herein by reference.

     (10)(k)  Executive  Bonus Plan for fiscal  year 2000 filed as Appendix C to
the  Definitive  Proxy  Statement  on Form DEF 14A filed on October 29, 1999 and
incorporated herein by reference.

     (10)(l) Registrant's U.S.  Supplemental  Executive Retirement Plan filed as
Exhibit 10(g) to the Registrant's  10-Q for the quarter ended November 30, 1997,
and incorporated herein by reference.

     (10)(m) Form of Change of Control Agreement COCA.

     (10)(n) Form of Change of Control Agreement A1RBCOC.

     (10)(o) Form of Change of Control Agreement A1RMCOC.

     (10)(p) Form of Change of Control Agreement COCB.

     (10)(q) Form of Change of Control Agreement COCC.

     (10)(r) Form of Change of Control Agreement A2COC.

     (11) Statement of Computation of Per Share Earnings

     (12) Statement Re: Computation of Ratios.

     (27) Financial Data Schedule.

          (b) Reports on Form 8-K.

               i.   The Company filed a Current  Report on Form 8-K on September
                    13,  1999,  which  contained  Item 5 related to the  Company
                    announcing  that  it had  been  advised  that  Laidlaw  Inc.
                    planned to actively seek a buyer for its 44% interest in the
                    Company.

               ii.  The Company filed a Current  Report on Form 8-K on September
                    14,  1999  which  contained  Item 5 related  to the  Company
                    announcing  that the Board of Directors  appointed a Special

                                       25
<PAGE>

                    Committee  of   non-Laidlaw   Inc.   directors  to  consider
                    implications of the announced  change in Laidlaw Inc.'s time
                    horizon for divesting its 44% common shares of the Company.

               iii. The Company filed a Current Report on Form 8-K on October 6,
                    1999  which   contained   Item  5  related  to  the  Company
                    announcing its operating  results for the fourth quarter and
                    fiscal year ending August 31, 1999.

               iv.  The  Company  filed a Current  Report on Form 8-K on October
                    12, 1999 which  contained Item 5 announcing that the Company
                    received  detailed report from its Special Committee and its
                    financial advisor, Raymond James and Associates on strategic
                    and financial alternatives for the Company.

               v.   The  Company  filed a Current  Report on Form 8-K on October
                    15, 1999 which contained Item 5 announcing that the Board of
                    Directors of the Company declared a dividend distribution of
                    1 common share purchase right on each  outstanding  share of
                    common  stock  payable  on or  about  October  25,  1999  to
                    shareholders of record on such date.



                                       26
<PAGE>



                                  EXHIBIT INDEX

         (a)     Exhibits:

     (3)(a) Restated  Certificate of  Incorporation of the Company dated May 13,
1997 and Amendment to Certificate of  Incorporation  dated May 15, 1997 filed as
Exhibit 3(a) to the  Registrant's  Form 10-Q for the Quarter  ended May 31, 1997
and incorporated herein by reference.

     (3)(a)(i) Certificate of Correction Filed to Correct a Certain Error in the
Restated and Amended  Certificate of  Incorporation of the Company dated October
15, 1997 filed as Exhibit  (3)(a)(i) to the  Registrant's  Form 10-K-405 for the
Year ended August 31, 1997, and incorporated herein by reference.

     (3)(a)(ii)   Certificate  of  Amendment  to  the  Restated  Certificate  of
Incorporation   of  the  Company  dated  November  25,  1998  filed  as  Exhibit
(3)(a)(iii)  to the  Registrant's  Form 10-Q for the quarter ended  November 30,
1998 and incorporated herein by reference.

     (3)(a)(iii)  Certificate  of  Amendment  to  the  Restated  Certificate  of
Incorporation of the Company dated November 30, 1998 filed as Exhibit (3)(a)(iv)
to the  Registrant's  Form 10-Q for the  quarter  ended  November  30,  1998 and
incorporated herein by reference.

     (3)(b) Amended and Restated Bylaws of the Company filed as Exhibit 4(ii) to
the Registrant's Current Report on Form 8-K dated July 29, 1997 and incorporated
herein by reference.

     (4)(a)  Indenture  dated as of May 29, 1998 between LES, Inc. (a subsidiary
of the Registrant),  Registrant, subsidiary guarantors of the Registrant and The
Bank of Nova Scotia Trust  Company of New York, as trustee filed as Exhibit 4(b)
to the Registrant's Form S-4 Registration Statement No. 333-57587 filed June 24,
1998 and incorporated herein by reference.

     (4)(b) First Supplemental Indenture effective as of November 15, 1998 among
Safety-Kleen Services, Inc. the Registrant, SK Europe, Inc. and The Bank of Nova
Scotia  Trust  Company of New York,  as trustee  filed as Exhibit  (4)(f) to the
Registrant's  Form S-4 Registration  Statement No. 333-82689 filed July 12, 1999
and incorporated herein by reference.

     (4)(c)  Indenture dated as of May 17, 1999 between  Registrant and the Bank
of Nova Scotia Trust Company of New York, as trustee filed as Exhibit  (4)(b) to
the Registrant's  Form S-4  Registration  Statement No. 333-82689 filed July 12,
1999 and incorporated herein by reference.

     (4)(d)  Second  Supplemental  Indenture  effective  as of May 7, 1999 among
Safety-Kleen  Services,  Inc. the  Registrant,  SK Services,  L.C.,  SK Services
(East),  L.C. and The

                                       27
<PAGE>

Bank of Nova  Scotia  Trust  Company of New York,  as  trustee  filed as Exhibit
(4)(d) to the  Registrant's  Form 10-K filed  October 29, 1999 and  incorporated
herein by reference.

     (4)(e)  Registration  Rights  Agreement  dated as of May 17,  1999  between
Registrant and TD Securities,  NationsBanc Montgomery Securities LLC and Raymond
James & Associates,  Inc. filed as Exhibit (4)(a) to the  Registrant's  Form S-4
Registration Statement No. 333-82689 filed July 12, 1999 and incorporated herein
by reference.

     (4)(f)  Amended and Restated  Credit  Agreement  among Laidlaw  Chem-Waste,
Inc.,  Laidlaw  Environmental  Services (Canada) Ltd.,  Toronto Dominion (Texas)
Inc.,  The  Toronto-Dominion  Bank, TD Securities  (USA) Inc.,  The Bank of Nova
Scotia,   NationsBank,   N.A.  and  The  First  National  Bank  of  Chicago  and
NationsBank,  N.A.  as  Syndication  Agent  dated as of April 3, 1998,  filed as
Exhibit 4(f) to the  Registrant's  Form 10-Q for the quarter ended  February 28,
1999, and incorporated herein by reference.

     (4)(g)  Supplement  to the  Amended and  Restated  Credit  Agreement  among
Laidlaw Chem-Waste,  Inc., Laidlaw Environmental Services (Canada) Ltd., Toronto
Dominion (Texas) Inc., The Toronto-Dominion  Bank, TD Securities (USA) Inc., The
Bank of Nova Scotia,  NationsBank,  N.A. and The First  National Bank of Chicago
and NationsBank,  N.A. as Syndication  Agent dated as of April 3, 1998, filed as
Exhibit 4(e) to a subsidiary of the Registrant's Form S-4 Registration Statement
No. 333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(h)  Waiver and First  Amendment  to the  Amended  and  Restated  Credit
Agreement  dated as of May 15,  1998  among  LES,  Inc.,  Laidlaw  Environmental
Services (Canada) Ltd., the Lenders, Toronto Dominion (Texas), Inc., The Toronto
Dominion Bank, TD Securities  (USA) Inc., The Bank of Nova Scotia,  NationsBank,
N.A., The First National Bank of Chicago and Wachovia Bank filed as Exhibit 4(f)
to a  subsidiary  of  the  Registrant's  Form  S-4  Registration  Statement  No.
333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(i) Commitment to Increase Supplement to the Amended and Restated Credit
Agreement  dated as of June 3,  1998  among  LES,  Inc.,  Laidlaw  Environmental
Services (Canada) Ltd., the Lenders, Toronto Dominion (Texas), Inc., The Toronto
Dominion Bank, TD Securities  (USA) Inc., The Bank of Nova Scotia,  NationsBank,
N.A., The First National Bank of Chicago and Wachovia Bank filed as Exhibit 4(g)
to a  subsidiary  of  the  Registrant's  Form  S-4  Registration  Statement  No.
333-57587 filed June 24, 1998 and incorporated herein by reference.

     (4)(j) Second  Amendment to the Amended and Restated Credit Agreement dated
as of November 20, 1998 among  Safety-Kleen  Services,  Inc.  (formerly known as
LES,  Inc.),  Safety-Kleen  Services  (Canada) Ltd.  (formerly  known as Laidlaw
Environmental  Services  (Canada) Ltd.), the Lenders,  Toronto Dominion (Texas),
Inc.,  The Toronto  Dominion  Bank, TD Securities  (USA) Inc.,  The Bank of Nova

                                       28
<PAGE>

Scotia, NationsBank,  N.A., The First National Bank of Chicago and Wachovia Bank
N.A.,  filed as Exhibit  (4)(j) to the  Registrant's  Form 10-Q for the  quarter
ended February 28, 1999 and incorporated herein by reference.

     (4)(k)  Waiver and Third  Amendment  to the  Amended  and  Restated  Credit
Agreement dated as of May 6, 1999 among  Safety-Kleen  Services,  Inc. (formerly
known as LES,  Inc.),  Safety-Kleen  Services  (Canada) Ltd.  (formerly known as
Laidlaw  Environmental  Services  (Canada) Ltd.), the Lenders,  Toronto Dominion
(Texas),  Inc., The Toronto Dominion Bank, TD Securities (USA) Inc., The Bank of
Nova Scotia, NationsBank,  N.A., The First National Bank of Chicago and Wachovia
Bank N.A.  filed as Exhibit  (4)(l) to the  Registrant's  Form S-4  Registration
Statement  No.  333-82689  filed  July  12,  1999  and  incorporated  herein  by
reference.

     (4)(l) Registration Rights Agreement dated May 15, 1997 between Registrant,
Laidlaw  Transportation,  Inc.  and Laidlaw  Inc. the form of which was filed as
Exhibit B to Annex A to the Registrant's  Definitive Proxy Statement on Form DEF
14A, filed on May 1, 1997 and incorporated herein by reference.

     (4)(m) Indenture dated as of May 1, 1993 between the Industrial Development
Board  of  the   Metropolitan   Government  of  Nashville  and  Davidson  County
(Tennessee)  and  NationsBank of Tennessee,  N.A.,  filed as Exhibit 4(f) to the
Registrant's  Form 10-Q for the Quarter  ended May 31,  1997,  and  incorporated
herein by reference.

     (4)(n) Indenture of Trust dated as of August 1, 1995 between Tooele County,
Utah and West One Bank,  Utah,  now known as U.S.  Bank,  as  Trustee,  filed as
Exhibit 4(h) to the  Registrant's  form 10-Q for the Quarter ended May 31, 1997,
and incorporated herein by reference.

     (4)(o)  Indenture of Trust dated as of July 1, 1997 between  Carbon County,
Utah and U.S. Bank, a national banking association, as Trustee, filed as Exhibit
4(i) to the  Registrant's  Form 10-Q for the  Quarter  ended May 31,  1997,  and
incorporated herein by reference.

     (4)(p)  Indenture of Trust dated as of July 1, 1997 between  Tooele County,
Utah and U.S. Bank, a national banking association, as Trustee, filed as Exhibit
4(j) to the  Registrant's  Form 10-Q for the  Quarter  ended May 31,  1997,  and
incorporated herein by reference.

     (4)(q)  Indenture  of Trust  dated as of July 1,  1997  between  California
Pollution  Control  Financing  Authority  and  U.S.  Bank,  a  national  banking
association, as Trustee, filed as Exhibit 4(k) to the Registrant's Form 10-Q for
the Quarter ended May 31, 1997, and incorporated herein by reference.

     (4)(r)  Promissory  Note  dated  May 15,  1997  for  $60,000,000  from  the
Registrant to Westinghouse  Electric  Corporation,  filed as Exhibit 4(n) to the
Registrant's  Form 10-Q for the Quarter  ended May 31,  1997,  and  incorporated
herein by reference.

                                       29
<PAGE>

     (4)(s)  Letter  dated May 7, 1999 from  Toronto-Dominion  (Texas)  Inc. (as
assignee of Westinghouse  Electric  Corporation) and agreed to by the Registrant
and Laidlaw Inc.  amending the terms of the  Promissory  Note dated May 15, 1997
(as referenced in Exhibit  (4)(r)) filed as Exhibit  (4)(u) to the  Registrant's
Form  S-4  Registration   Statement  No.  333-82689  filed  July  12,  1999  and
incorporated herein by reference.

     (4)(t)   Guaranty   Agreement  dated  May  15,  1997  by  Laidlaw  Inc.  to
Westinghouse  Electric  Corporation  guaranteeing  Promissory Note dated May 15,
1997 (as referenced in Exhibit (4)(s)) from Registrant to Westinghouse  Electric
Corporation),  filed  as  Exhibit  4(o) to the  Registrant's  Form  10-Q for the
Quarter ended May 31, 1997, and incorporated herein by reference.

     (4)(u) Collateral Account Pledge and Security Agreement dated as of May 17,
1999 between the Registrant,  the Bank of Nova Scotia Trust Company of New York,
as escrow  agent  and the Bank of Nova  Scotia  Trust  Company  of New York,  as
trustee,  filed as  Exhibit  (4)(d) to the  Registrant's  Form S-4  Registration
Statement  No.  333-82689  filed  July  12,  1999  and  incorporated  herein  by
reference.

     (4)(v)  Registration  Rights Agreement dated as of October 15, 1999 between
the Registrant  and EquiServe  Trust  Company,  N.A., as Rights Agent,  filed as
Exhibit (c)1 to the Registrant's Current Report on Form 8-K filed on October 15,
1999 and incorporated herein by reference.

     (4)(w) Other  instruments  defining the rights of holders of  nonregistered
debt of the  Registrant  have been  omitted  from this  exhibit list because the
amount of debt  authorized  under any such instrument does not exceed 10% of the
total assets of the Registrant and its  subsidiaries.  The Registrant  agrees to
furnish a copy of any such instrument to the Commission upon request.

     (10)(a)  Agreement  and Plan of Merger  dated as of March  16,  1998 by and
among  Registrant,  LES Acquisition,  Inc., and Safety-Kleen  Corp.  included as
Annex A of  Safety-Kleen's  Revised  Amended  Prospectus  on Form 14D-9 filed as
Exhibit 62 to  Safety-Kleen's  Amendment  No. 28 to Schedule  14-9A on March 17,
1998, and incorporated herein by reference.

     (10)(b) Stock Purchase Agreement between Westinghouse  Electric Corporation
(Seller) and Rollins Environmental Services, Inc. (Buyer) for National Electric,
Inc. dated March 7, 1995 filed as Exhibit 2 to the  Registrant's  Current Report
on Form 8-K filed on June 13, 1995 and incorporated herein by reference.

     (10)(c)  Second  Amendment to Stock  Purchase  Agreement (as  referenced in
Exhibit  (10)(b)  above),  dated  May  15,  1997  among  Westinghouse   Electric
Corporation,  Rollins  Environmental  Services,  Inc. and Laidlaw Inc., filed as
Exhibit 4(m) to the  Registrant's  Form 10-Q for the Quarter ended May 31, 1997,
and incorporated herein by reference.

                                       30
<PAGE>

     (10)(d) Rollins  Environmental  Services,  Inc. 1982 Incentive Stock Option
Plan filed with  Amendment  No. 1 to the  Company's  Registration  Statement No.
2-84139 on Form S-1 dated June 24, 1983 and incorporated herein by reference.

     (10)(e) Rollins Environmental  Services,  Inc. 1993 Stock Option Plan filed
with the Company's Proxy  Statement for the Annual Meeting of Shareholders  held
January 28, 1994 and incorporated herein by reference.

     (10)(f)  Registrant's  1997 Stock Option Plan,  filed as Exhibit 4.4 to the
Company's  Registration  Statement No.  333-41859 on Form S-8 dated December 10,
1997 and incorporated herein by reference.

     (10)(g) First Amendment to the 1997 Stock Option Plan.

     (10)(h) Registrant's  Director's Stock Option Plan, filed as Exhibit 4.5 to
the Company's  Registration  Statement No.  333-41859 on Form S-8 dated December
10, 1997 and incorporated herein by reference.

     (10)(i) First Amendment to the 1997 Director's Stock Option Plan.

     (10)(j)  Stock  Purchase   Agreement  dated  February  6,  1997  among  the
Registrant, Laidlaw Inc., and Laidlaw Transportation, Inc. filed as Exhibit A to
Annex A to the Definitive  Proxy  Statement on Form DEF 14A filed on May 1, 1997
and incorporated herein by reference.

     (10)(k)  Executive  Bonus Plan for fiscal  year 2000 filed as Appendix C to
the  Definitive  Proxy  Statement on Form DEF 14A filed on November 30, 1999 and
incorporated herein by reference.

     (10)(l) Registrant's U.S.  Supplemental  Executive Retirement Plan filed as
Exhibit 10(g) to the Registrant's  10-Q for the quarter ended November 30, 1997,
and incorporated herein by reference.

     (10)(m) Form of Change of Control Agreement COCA.

     (10)(n) Form of Change of Control Agreement A1RBCOC.

     (10)(o) Form of Change of Control Agreement A1RMCOC.

     (10)(p) Form of Change of Control Agreement COCB.

     (10)(q) Form of Change of Control Agreement COCC.

     (10)(r) Form of Change of Control Agreement A2COC.

                                       31
<PAGE>

     (11) Statement of Computation of Per Share Earnings

     (12) Statement Re: Computation of Ratios.

     (27) Financial Data Schedule.

          (b)  Reports on Form 8-K.

               i.   The Company filed a Current  Report on Form 8-K on September
                    13,  1999,  which  contained  Item 5 related to the  Company
                    announcing  that  it had  been  advised  that  Laidlaw  Inc.
                    planned to actively seek a buyer for its 44% interest in the
                    Company.

               ii.  The Company filed a Current  Report on Form 8-K on September
                    14,  1999  which  contained  Item 5 related  to the  Company
                    announcing  that the Board of Directors  appointed a Special
                    Committee  of   non-Laidlaw   Inc.   directors  to  consider
                    implications of the announced  change in Laidlaw Inc.'s time
                    horizon for divesting its 44% common shares of the Company.

               iii. The Company filed a Current Report on Form 8-K on October 6,
                    1999  which   contained   Item  5  related  to  the  Company
                    announcing its operating  results for the fourth quarter and
                    fiscal year ending August 31, 1999.  iv. The Company filed a
                    Current  Report  on  Form  8-K on  October  12,  1999  which
                    contained  Item  5  announcing  that  the  Company  received
                    detailed report from its Special Committee and its financial
                    advisor,  Raymond  James and  Associates  on  strategic  and
                    financial alternatives for the Company.

               v.   The  Company  filed a Current  Report on Form 8-K on October
                    15, 1999 which contained Item 5 announcing that the Board of
                    Directors of the Company declared a dividend distribution of
                    1 common share purchase right on each  outstanding  share of
                    common  stock  payable  on or  about  October  25,  1999  to
                    shareholders of record on such date.



                                       32
<PAGE>



                                   SIGNATURES

       Pursuant to the requirements of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


DATE:  January 14, 2000            SAFETY-KLEEN CORP.
                                   (Registrant)

                                   /s/Kenneth W. Winger
                                   ---------------------------------
                                   Kenneth W. Winger
                                   President and Chief Executive Officer



                                   /s/Paul R. Humphreys
                                   ---------------------------------
                                   Paul R. Humphreys
                                   Senior Vice President-Finance and
                                   Chief Financial Officer





                                       33

                             FIRST AMENDMENT TO THE
                             1997 STOCK OPTION PLAN

         WHEREAS,  Safety-Kleen Corp. (the "Company") has previously established
the Stock Option Plan effective July 9, 1997 (the "Plan") for the benefit of the
employees of the Company.

         WHEREAS,  the Plan is intended to advance the  interests of the Company
and its  subsidiaries  by  encouraging  stock  ownership by key employees of the
Company and its  subsidiaries  as a means to attract,  motivate  and retain such
employees;

         WHEREAS, the Plan was approved by the Board of Directors of the Company
(the "Board") on July 9, 1997;

         WHEREAS,  the Plan was approved by the  shareholders  of the Company on
November 25, 1997;

         WHEREAS,  the Plan  authorized  the Human  Resources  and  Compensation
Committee  of the Board (the  "HRCC") to grant  options for the  purchase of not
more than 1,500,000  shares of Company common stock (the "Shares")  (taking into
account the one for four reverse stock split) in the aggregate; and

         WHEREAS,  the Board, by unanimous  resolution at its regular  quarterly
meeting on October 5, 1999, and the  shareholders of the Company,  at its annual
meeting on November 30, 1999,  approved an amendment to the Plan  increasing the
number of Shares which may be issued under the Plan by an  additional  1,000,000
to authorize additional Shares to be granted pursuant to the Plan.

      NOW THEREFORE, the Plan is amended as set forth below.

I.    SHARES SUBJECT TO THE PLAN

      Section 3 of the Plan shall be amended and restated to read as follows:

      SHARES SUBJECT TO THE PLAN

      The HRCC may grant options  ("Options")  for the purchase of not more than
2,500,000  Common  Shares  ("Shares")  $1.00 par value of LESI in the  aggregate
subject to  adjustments  as provided in paragraph 5 hereof;  provided,  however,
that each grant of an option  hereunder  to any person who is an officer of LESI
for purposes of Section 16 of the  Securities  Exchange Act of 1934,  as amended
(an  "Officer"),  shall be approved by the Board of  Directors  of LESI.  If any
Option  granted  to a person  eligible  to be  granted  Options  under  the Plan
("Participant")  lapses or is  otherwise  terminated,  such Shares shall then be
again available for the grant of Options hereunder.  Such Shares may be treasury
Shares or authorized but unissued Shares.

II.   EFFECTIVE DATE OF FIRST AMENDMENT

      This First Amendment to the Plan shall be effective and shall be deemed to
have been adopted on November 30, 1999 upon Shareholder approval.

III.  CONTINUING EFFECTS

      Except as  expressly  amended  hereby,  the Plan shall  continue to be and
shall remain in full force and effect in accordance with its terms.




                             FIRST AMENDMENT TO THE
                        1997 DIRECTOR'S STOCK OPTION PLAN

      WHEREAS, Safety-Kleen Corp. (the "Company") has previously established the
Director's Stock Option Plan effective July 9, 1997 (the "Plan") for the benefit
of the non-employee directors of the Company.

      WHEREAS,  the Plan is intended to advance the interests of the Company and
its subsidiaries by encouraging stock ownership by directors of the Company;

      WHEREAS,  the Plan was  approved by the Board of  Directors of the Company
(the  "Board")  on July 9,  1997 and was  approved  by the  shareholders  of the
Company on November 25, 1997;

      WHEREAS,  the Plan  authorized the Board to grant options for the purchase
of not more than 135,000 shares of Company  common stock (the "Shares")  (taking
into account the one for four reverse stock split) in the aggregate;

      WHEREAS,  the Board has  granted to  non-employee  directors  options to
purchase 135,000 Shares to date; and

      WHEREAS,  the  Board by  unanimous  resolution  at its  regular  quarterly
meeting on October 5, 1999  approved an  amendment  to the Plan  increasing  the
number of Shares which may be issued under the Plan by an additional 300,000.

      NOW THEREFORE, the Plan is amended as set forth below.

I.    SHARES SUBJECT TO THE PLAN

      Section 3 of the Plan shall be amended and restated to read as follows:

      SHARES SUBJECT TO THE PLAN

      The Board of Directors may grant options  ("Options")  for the purchase of
not more than 435,000  Common Shares  ("Shares")  $1.00 par value of LESI in the
aggregate  subject to  adjustments  as  provided in  paragraph 4 hereof.  If any
Option  granted  to a person  eligible  to be  granted  Options  under  the Plan
("Participant")  lapses or is  otherwise  terminated,  such Shares shall then be
again available for the grant of Options hereunder.

II.   EFFECTIVE DATE OF FIRST AMENDMENT

      This First Amendment to the Plan shall be effective and shall be deemed to
have been adopted on October 5, 1999.

III.  CONTINUING EFFECTS

      Except as  expressly  amended  hereby,  the Plan shall  continue to be and
shall remain in full force and effect in accordance with its terms.






                                 Exhibit (10)(m)


                                  SAFETY-KLEEN
                      CHANGE OF CONTROL SEVERANCE AGREEMENT
                             (FirstName) (LastName)

<PAGE>


                                TABLE OF CONTENTS

                                                                            Page
ARTICLE I. - PURPOSES                                                        1

ARTICLE II. - CERTAIN DEFINITIONS                                            1
         2.1   Accrued Obligations                                           1
         2.2   Agreement Term                                                1
         2.3   Article                                                       2
         2.4   Beneficial owner                                              2
         2.5   Cause                                                         2
         2.6   Change of Control                                             2
         2.7   Code                                                          2
         2.8   Disability                                                    2
         2.9   Effective Date                                                2
         2.10  Good Reason                                                   3
         2.11  Gross-up Payment                                              3
         2.12  Imminent Change of Control Date                               3
         2.13  IRS                                                           3
         2.14  1934 Act                                                      3
         2.15  Notice of Termination                                         3
         2.16  Plans                                                         3
         2.17  Policies                                                      3
         2.18  Post-Change Period                                            3
         2.19  SEC                                                           3
         2.20  Section                                                       3
         2.21  Subsidiary                                                    3
         2.22  Termination Date                                              4
         2.23  Termination Performance Period                                4
         2.24  Voting Securities                                             4

ARTICLE III. - POST-CHANGE PERIOD PROTECTIONS                                4
         3.1   Position and Duties                                           4
         3.2   Compensation                                                  5
         3.3   Stock Options                                                 7
         3.4   Excess / Supplemental Plans                                   7

ARTICLE IV. - TERMINATION OF EMPLOYMENT                                      8
         4.1   Disability                                                    8
         4.2   Death                                                         8
         4.3   Cause                                                         8
         4.4   Good Reason                                                   9

ARTICLE V. - OBLIGATIONS OF THE COMPANY UPON TERMINATION                    10
         5.1    If by the Executive for Good Reason or by the
                  Company Other Than for Cause or Disability                10
<PAGE>

         5.2    If by the Company for Cause                                 11
         5.3    If by the Executive Other Than for Good Reason              12
         5.4    If by the Company for Disability                            12
         5.5    If upon Death   12
         5.6    Joint and Several Obligation                                12

ARTICLE VI. - NON-EXCLUSIVITY OF RIGHTS                                     12
         6.1    Waiver of Other Severance Rights                            12
         6.2    Other- Rights                                               13

ARTICLE VII. - CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY                   13
         7.1    Gross-up for Certain Taxes                                  13
         7.2    Determination by the Executive                              13
         7.3    Additional Gross-up Amounts                                 14
         7.4    Gross-up Multiple                                           14
         7.5    Opinion of Counsel                                          15
         7.6    Amount Increased or Contested                               15
         7.7    Refunds                                                     16
         7.8    Joint and Several Obligation                                16

ARTICLE VIII. - EXPENSES AND INTEREST                                       16
         8.1    Legal Fees and Other Expenses                               16
         8.2    Interest                                                    17
         8.3    Joint and Several Obligation                                17

ARTICLE IX. - NO SET-OFF OR MITIGATION                                      17
         9.1    No Set-off by Company                                       17
         9.2    No Mitigation                                               17

ARTICLE X. - CONFIDENTIALITY AND NON-COMPETITION                            18
         10.1    Confidentiality                                            18
         10.2    Non-competition/ Non-Solicitation                          18
         10.3    Remedy                                                     19

ARTICLE XI. - MISCELLANEOUS                                                 19
         11.1    No Assignability                                           19
         11.2    Successors                                                 19
         11.3    Payments to Beneficiary                                    20
         11.4    Non-alienation of Benefits                                 20
         11.5    Severability                                               20
         11.6    Amendments                                                 20
         11.7    Notices                                                    20
         11.8    Counterparts                                               21
         11.9    Governing Law                                              21

<PAGE>

         11.10   Captions                                                   21
         11.11   Tax Withholding                                            21
         11.12   No Waiver                                                  21
         11.13   Entire Agreement                                           21
         11.14   Cancellation                                               21




<PAGE>


                                  SAFETY-KLEEN

                      CHANGE OF CONTROL SEVERANCE AGREEMENT


         THIS AGREEMENT dated as of October 6, 1999, is made among SAFETY- KLEEN
CORP.,  a  Delaware  corporation  having  its  principal  place of  business  in
Columbia,  South  Carolina  (the  "Company"),  SAFETY-KLEEN  SERVICES,  INC.,  a
Delaware  corporation having its principal place of business in Columbia,  South
Carolina  and  a  wholly  owned  subsidiary  of  the  Company  ("Services")  and
(FirstName) (LastName) (the "Executive"), a resident of (State).

         The  Company,  Services  and the  Executive  agree that this  agreement
supersedes any prior agreement between any of them which  specifically  provides
benefits upon a change in control of the Company or Services,  and further agree
that, if benefits become payable to the Executive  pursuant to Article V hereof,
such benefits will be in lieu of any other severance or termination  benefits to
which the Executive  otherwise  would be entitled  under any other  severance or
termination plan, policy or arrangement of the Company or Services.

                                   ARTICLE I.
                                   PURPOSES

        The Board of  Directors  of the Company  (the  "Board") and the Board of
Directors of Services have  determined  that it is in the best  interests of the
Company and its  stockholders,  and of Services,  to assure that the Company and
Services  will  have  the  continued  service  of  the  Executive,  despite  the
possibility or occurrence of a change of control of the Company or Services. The
Board believes it is imperative to reduce the  distraction of the Executive that
would result from the personal  uncertainties  caused by a pending or threatened
change of control, to encourage the Executive's full attention and dedication to
the Company and Services,  and to provide the Executive  with  compensation  and
benefits   arrangements   upon  a  change  of  control  which  ensure  that  the
expectations of the Executive will be satisfied and are  competitive  with those
of  similarly-situated  corporations.  This  Agreement is intended to accomplish
these objectives.

                                   ARTICLE II.
                               CERTAIN DEFINITIONS

        When used in this  Agreement,  the terms  specified below shall have the
following meanings:

         2.1 "Accrued Obligations" -- see Section 5.3.

         2.2  "Agreement  Term" means the period  commencing on the date of this
Agreement and ending on the date which is twelve (12) months  following the date
that both


                                                                               1


<PAGE>


the Company and Services give notice of  cancellation  pursuant to Section 11.14
hereof (the "Expiration Date"); provided, however, that if an Imminent Change of
Control Date occurs before the  Expiration  Date,  then the Agreement Term shall
automatically extend to a date which is twelve (12) months after the date of the
Imminent  Change of Control  Date:  and  provided  further,  that if a Change of
Control   occurs  before  the  Expiration   Date,  the  Expiration   Date  shall
automatically be extended to the last day of the Post-Change Period.

         2.3 "Article" means an article of this Agreement.

         2.4 "Beneficial  owner" means such term as defined in Rule 13d-3 of the
SEC under the 1934 Act.

         2.5 "Cause" - see Section 4.3(b).

         2.6 "Change of Control" means,  except as otherwise provided below, the
occurrence of any of the following:

                  a. (X) any  person  (as such term is used in Rule  13(d)- 5 of
         the SEC  under  the 1934  Act) or group  (as such  term is  defined  in
         Section 13(d) of the 1934 Act), other than a Subsidiary or any employee
         benefit plan (or related trust) of the Company or a Subsidiary, becomes
         the beneficial  owner of 15% or more of the common stock of the Company
         or of Voting Securities representing 15% or more of the combined voting
         power of all Voting Securities of the Company,  (Y) Laidlaw Inc. ceases
         to be the beneficial owner, directly or indirectly, of 43.6% or more of
         the Voting  Securities  of the Company and (Z) another  person or group
         becomes the beneficial owner of Voting  Securities of the Company which
         represent  a larger  number of Voting  Securities  than  those  held by
         Laidlaw Inc.
                  b. within a period of 24 months or less, the individuals  who,
         as of any date, constitute the Board (the "Incumbent  Directors") cease
         for any reason to constitute at least a majority of the Board unless at
         the end of such period,  the majority of individuals then  constituting
         the Board were nominated upon the  recommendation  of a majority of the
         Incumbent Directors.
                  c. the sale or other  disposition of all or substantially  all
         of the assets of the Company or Services.
                  d. the sale or other disposition by the Company of 50% or more
         of the Voting  Securities  of Services or any other  transaction  which
         results in any person,  other than the Company or a  subsidiary  or any
         employee benefit plan of the Company,  becoming the beneficial owner of
         50% or more of the Voting Securities of Services.

         2.7 "Code" means the Internal Revenue Code of 1986, as amended.

         2.8 "Disability" -- see Section 4.1(b).

         2.9 "Effective  Date" means the first date on which a Change of Control
occurs  during the Agreement  Term.  Despite  anything in this  Agreement to the
contrary,  if the


                                                                               2


<PAGE>

Company or Services  terminates the Executive's  employment before the date of a
Change  of  Control,  and if the  Executive  reasonably  demonstrates  that such
termination  of employment (a) was at the request of a third party who had taken
steps  reasonably  calculated  to effect the Change of Control or (b)  otherwise
arose  in  connection  with or  anticipation  of the  Change  of  Control,  then
"Effective  Date"  shall  mean  the  date  immediately  before  the date of such
termination of employment.

         2.10  "Employer"  means  whichever  of the  Company or  Services is the
primary common-law employer of the Executive at the relevant time.

         2.11 "Good Reason" -- see Section 4.4(b).

         2.12 "Gross-up Payment" -- see Section 7.1.

         2.13  "Imminent  Change of Control Date" means any date on which occurs
(a) a  presentation  to  the  Company's  stockholders  generally  or  any of the
Company's directors or executive officers of a proposal or offer for a Change of
Control,  or (b)  the  public  announcement  (whether  by  advertisement,  press
release,  press  interview,  public  statement,  SEC filing or  otherwise)  of a
proposal or offer for a Change of Control, and in case of either (a) or (b) such
proposal or offer remains effective and unrevoked.

         2.14 "IRS" means the Internal Revenue Service.

         2.15 "1934 Act" means the Securities Exchange Act of 1934.

         2.16 "Notice of Termination" means a written notice given in accordance
with  Section 11.7 which sets forth (a) the  specific  termination  provision in
this  Agreement  relied upon by the party giving such notice,  (b) in reasonable
detail the facts and circumstances claimed to provide a basis for termination of
the  Executive's  employment  under such  termination  provision  and (c) if the
Termination  Date  is  other  than  the  date  of  receipt  of  such  Notice  of
Termination, the Termination Date.

         2.17  "Plans"  means  plans,  programs,  policies or  practices  of the
Company and Services.

         2.18  "Policies" means policies, practices or procedures of the Company
and Services.

         2.19 "Post-Change  Period" means the period commencing on the Effective
Date and ending on the third anniversary of such date.

         2.20 "SEC" means the Securities and Exchange Commission.

         2.21 "Section" means, unless the context otherwise requires,  a section
of this Agreement.


                                                                               3

<PAGE>

         2.22  "Subsidiary"  means a corporation as defined in Section 424(f) of
the Code with the Company being treated as the employer corporation for purposes
of this definition.

         2.23  "Termination  Date"  means the date of  receipt  of the Notice of
Termination  or any later date specified in such notice (which date shall be not
more  than 15 days  after  the  giving  of such  notice),  as the  case  may be;
provided,   however,  that  (a)  if  the  Company  or  Services  terminates  the
Executive's employment other than for Cause or Disability,  then the Termination
Date shall be the date of receipt of such Notice of  Termination  and (b) if the
Executive's employment is terminated by reason of death or Disability,  then the
Termination  Date shall be the date of death of the Executive or the "Disability
Effective Date" (as defined in Section 4.1), as the case may be.

         2.24     "Termination Performance Period" - see Section 3.2(b)(2).

         2.25 "Voting  Securities"  of a  corporation  means  securities of such
corporation  that are entitled to vote generally in the election of directors of
such corporation.

                                  ARTICLE III.
                         POST-CHANGE PERIOD PROTECTIONS

         3.1       Position and Duties.

                  a. During the Post-Change Period, (1) the Executive's position
         with the  Company  and  Services,  (in the case of a Change of  Control
         involving  the  Company) or with  Services  (in the case of a Change of
         Control  involving  Services)  (including  offices,  titles,  reporting
         requirements  and  responsibilities),  authority and duties shall be at
         least  commensurate in all material  respects with the most significant
         of those  held,  exercised  and  assigned at any time during the 90-day
         period  immediately  before the Effective Date and (2) the  Executive's
         services  shall be performed at the location  where the  Executive  was
         employed  immediately  before the Effective  Date or any other location
         less than 40 miles from such former location.

                  b. During the  Post-Change  Period  (other than any periods of
         vacation, sick leave or disability to which the Executive is entitled),
         the Executive  agrees to devote the Executive's full attention and time
         to the  business  and affairs of the Company and  Services  and, to the
         extent  necessary to discharge the duties  assigned to the Executive in
         accordance with this Agreement,  to use the Executive's best efforts to
         perform faithfully and efficiently such duties.  During the Post-Change
         Period,  the Executive may (1) serve on corporate,  civic or charitable
         boards  or  committees,   (2)  deliver   lectures,   fulfill   speaking
         engagements  or  teach  at  educational  institutions  and  (3)  manage
         personal  investments,  so long as such  activities are consistent with
         the  Policies of the Company or Services at the  Effective  Date and do
         not  significantly  interfere with the  performance of the  Executive's
         duties  under this  Agreement.  To the extent that any such  activities
         have been conducted by the Executive before the



                                                                               4

<PAGE>

         Effective Date and were consistent with the Policies of the Company and
         Services  at  the  Effective  Date,  the  continued   conduct  of  such
         activities  (or  activities  similar  in nature  and  scope)  after the
         Effective Date shall not be deemed to interfere with the performance of
         the Executive's duties under this Agreement.

         3.2      Compensation.

                  a. Base Salary. During the Post-Change Period, the Company and
         Services  shall pay or cause to be paid to the Executive an annual base
         salary in cash  ("Guaranteed  Base  Salary"),  which shall be paid in a
         manner consistent with the Company's or Services' (as applicable to the
         Executive) payroll practices in effect immediately before the Effective
         Date at a rate at least  equal to 12 times  the  highest  monthly  base
         salary paid or payable to the  Executive by the Company and Services in
         respect of the 12-month period  immediately  before the Effective Date.
         During the  Post-Change  Period,  the  Guaranteed  Base Salary shall be
         reviewed at least  annually and shall be increased at any time and from
         time to time as shall be  substantially  consistent  with  increases in
         base  salary  awarded  to other  peer  executives  of the  Company  and
         Services.  Any  increase in  Guaranteed  Base Salary shall not limit or
         reduce  any  other  obligation  of  the  Company  and  Services  to the
         Executive under this Agreement. After any such increase, the Guaranteed
         Base Salary shall not be reduced and the term  "Guaranteed Base Salary"
         shall thereafter refer to the increased amount.

                  b. Target Bonus.  During the Post-Change  Period,  the Company
         and  Services  shall pay or cause to be paid to the  Executive  a bonus
         (the "Guaranteed  Bonus") for each Performance Period which ends during
         the Post-Change Period.  "Performance Period" means each period of time
         designated in accordance  with any bonus  arrangement of the Company or
         Services ("Bonus Plan") which is based upon performance and approved by
         the Board or any committee of the Board.  The Guaranteed Bonus shall be
         at least equal to the greatest of:

                  (1)      the On Plan  Bonus,  which  shall mean the cash bonus
                           which the Executive would accrue under any Bonus Plan
                           for the  Performance  Period for which the Guaranteed
                           Bonus is awarded ("Current Performance Period") as if
                           the  performance  achieved  100% of plan  established
                           pursuant to such Bonus Plan and the maximum  level of
                           the discretionary portion is achieved;

                  (2)      the  Actual  Bonus,  which  shall mean the cash bonus
                           which Executive would accrue under any Bonus Plan for
                           the  Current  Performance  Period if the  performance
                           during the Current  Performance  Period were measured
                           by actual performance;  provided,  however,  that for
                           purposes of Article V of this  Agreement,  the Actual
                           Bonus  for  the  Performance   Period  in  which  the
                           Termination    Date   occurred   (the    "Termination
                           Performance  Period") shall not be less than the cash
                           bonus  which the  Executive  would  accrue  under any
                           Bonus Plan if  performance  during


                                                                               5

<PAGE>

                           that Termination  Performance Period were measured by
                           the  actual   performance   during  the   Termination
                           Performance   Period  before  the  Termination   Date
                           projected to the last day of such Performance  Period
                           and the maximum level of the discretionary portion is
                           achieved; and

                  (3)      the Historical  Bonus,  which shall mean the greatest
                           bonus that the Executive accrued under any Bonus Plan
                           in the last three (3) Performance  Periods that ended
                           before the  Post-Change  Period;  provided,  however,
                           that for purposes of Article V of this Agreement, the
                           Historical Bonus for the Performance  Period in which
                           the Termination  Date occurred shall not be less than
                           the cash bonus that the Executive accrued in the last
                           Performance  Period that ended before the Termination
                           Date.

                  c.  Incentive,  Savings and Retirement  Plans.  In addition to
         Guaranteed Base Salary and Guaranteed Bonus payable as provided in this
         Section,  the  Executive  shall be entitled to  participate  during the
         Post-Change Period in all incentive (including  long-term  incentives),
         savings and retirement Plans applicable to other peer executives of the
         Company  and  Services,  but in no event  shall such Plans  provide the
         Executive with incentive (including long-term incentives),  savings and
         retirement  benefits which are less favorable,  in the aggregate,  than
         the most  favorable of those provided by the Company or Services to the
         Executive  or to peer  executives  under such Plans as in effect at any
         time during the 90-day period immediately before the Effective Date.

                  d. Welfare Benefit Plans.  During the Post-Change  Period, the
         Executive and the  Executive's  family shall be eligible to participate
         in, and receive all benefits  under,  welfare benefit Plans provided by
         the Company  and  Services  (including,  without  limitation,  medical,
         prescription,   dental,   disability,   individual  life,  group  life,
         dependent life,  accidental death and travel accident  insurance Plans)
         and applicable to other peer executives of the Company and Services and
         their families, but in no event shall such Plans provide benefits which
         in any  case  are  less  favorable,  in the  aggregate,  than  the most
         favorable  of those  provided to the  Executive  or to peer  executives
         under  such Plans as in effect at any time  during  the  90-day  period
         immediately before the Effective Date.

                  e.  Fringe  Benefits.   During  the  Post-Change  Period,  the
         Executive  shall be entitled  to fringe  benefits  and other  executive
         perquisites in accordance with the most favorable  Plans  applicable to
         peer executives of the Company and Services, but in no event shall such
         Plans provide fringe benefits and other executive  perquisites which in
         any case are less favorable, in the aggregate,  than the most favorable
         of those  provided by the Company and  Services to the  Executive or to
         peer  executives  under  such  Plans in effect at any time  during  the
         90-day period immediately before the Effective Date.


                                                                               6

<PAGE>

                  f.  Expenses.  During the  Post-Change  Period,  the Executive
         shall  be  entitled   to  prompt   reimbursement   of  all   reasonable
         employment-related   expenses   incurred  by  the  Executive  upon  the
         Company's  or  Services'  (as  applicable)  receipt of  accountings  in
         accordance  with  the  most  favorable  Policies   applicable  to  peer
         executives  of the  Company  and  Services,  but in no event shall such
         Policies be less favorable,  in the aggregate,  than the most favorable
         of those  provided by the Company and  Services to the  Executive or to
         peer  executives  under such  Policies in effect at any time during the
         90-day period immediately before the Effective Date.

                  g. Office and Support Staff.  During the  Post-Change  Period,
         the  Executive  shall be entitled to an office or offices of a size and
         with  furnishings  and other  appointments,  and to exclusive  personal
         secretarial and other  assistance in accordance with the most favorable
         Policies applicable to peer executives of the Company and Services, but
         in no event shall such Policies be less  favorable,  in the  aggregate,
         than the most  favorable of those  provided by the Company and Services
         to the Executive or to peer executives under such Policies in effect at
         any time  during the 90-day  period  immediately  before the  Effective
         Date.

                  h.  Vacation.  During the  Post-Change  Period,  the Executive
         shall  be  entitled  to paid  vacation  in  accordance  with  the  most
         favorable  Policies  applicable  to peer  executives of the Company and
         Services, but in no event shall such Policies be less favorable, in the
         aggregate, than the most favorable of those provided by the Company and
         Services to the Executive or to peer executives  under such Policies in
         effect at any time  during the  90-day  period  immediately  before the
         Effective Date.

         3.3      Stock Options.

           In addition to the other  benefits  provided in this Section,  on the
  Effective  Date,  the  Employer  shall pay to the  Executive  a lump-sum  cash
  payment  equal to the spread (fair market  value over  exercise  price) of all
  outstanding options granted to the Executive for shares of common stock of the
  Company whether vested or not vested on the Effective  Date.  Whichever of the
  Company and  Services  is not the  Employer,  shall be jointly  and  severally
  liable for the obligation of the Employer under this Section 3.3.

         3.4      Excess/Supplemental Plans.

           In addition to the other  benefits  provided in this Section,  on the
  Effective  Date,  the  Employer  shall pay to Executive an amount equal to the
  value (determined using (i) the interest rate published by the PBGC, as of the
  calendar  month  immediately  prior to the  Effective  Date,  for the specific
  purpose of determining  the present value of lump sum benefits as discussed in
  29 C.F.R. 4044 and (ii) the UP 84 Mortality Table) of the Executive's  accrued
  benefits under (1) the Safety-Kleen Supplemental Executive Retirement Plan, or
  (2) any such successor plan or other nonqualified  unfunded retirement Plan as
  may be in effect as of (or as may have been in effect at any time  during  the
  90-day period immediately before) the Effective Date (the "Excess/Supplemental
  Plans"),  irrespective  of


                                                                               7

<PAGE>

whether or not Executive is vested therein,  and without any reduction for early
retirement,  early payout and social security benefits,  and taking into account
for benefit accrual purposes,  the Executive's entire period of service with the
Company  and its  affiliates  as  reflected  on the  Company's  Human  Resources
database.  Whichever of the Company and Services is not the  Employer,  shall be
jointly and  severally  liable for the  obligation  of the  Employer  under this
Section 3.4.


                                   ARTICLE IV.
                            TERMINATION OF EMPLOYMENT

         4.1      Disability.

                  a. During the Post-Change  Period,  the Employer may terminate
         the Executive's  employment upon the Executive's Disability (as defined
         in Section 4.1(b)) by giving the Executive or his legal representative,
         as applicable,  (1) written  notice in accordance  with Section 11.7 of
         the  Employer's  intention  to  terminate  the  Executive's  employment
         pursuant to this  Section and (2) a  certification  of the  Executive's
         Disability by a physician  selected by the Employer or its insurers and
         reasonably  acceptable  to  the  Executive  or  the  Executive's  legal
         representative. The Executive's employment shall terminate effective on
         the 30th day (the  'Disability  Effective  Date') after the Executive's
         receipt of such notice unless,  before the Disability  Effective  Date,
         the  Executive  shall have  resumed the  full-time  performance  of the
         Executive's duties.

                  b. "Disability" means any medically  determinable  physical or
         mental  impairment that has lasted for a continuous  period of not less
         than six months and can be expected to be  permanent  or of  indefinite
         duration.  and  that  renders  the  Executive  unable  to  perform  the
         essential  functions  required  under  this  Agreement  with or without
         reasonable accommodation.

         4.2     Death. The Executive's employment shall terminate automatically
upon the Executive's death during the Post-Change Period.

         4.3     Cause.

                  a. During the Post-Change  Period,  the Employer may terminate
         the Executive's employment for Cause.

                  b. "Cause" means any of the  following:  (i) conviction of the
         Executive of, or the Executive's pleading guilty or nolo contendere to,
         any felony  which  includes  as an element of the crime a  premeditated
         intention to commit the act, (ii) Executive's  inability to perform his
         duties  due to  habitual  alcohol  or  drug  addiction,  (iii)  serious
         misconduct   involving   dishonesty   in  the  course  of   Executive's
         employment,  or (iv) the  Executive's  habitual  neglect of his duties;
         except that Cause shall not mean:


                                                                               8


<PAGE>


                           (1) bad  judgment or negligence  other than  habitual
                  neglect of duty;

                           (2) any act or omission  believed by the Executive in
                  good faith to have been in or not  opposed to the  interest of
                  the Company and Services  (without  intent of the Executive to
                  gain, directly or indirectly,  a profit to which the Executive
                  was not legally entitled);

                           (3) any  act or  omission  with  respect  to  which a
                  determination  could properly have been made by the Board that
                  the  Executive  met the  applicable  standard  of conduct  for
                  indemnification  or  reimbursement   under  the  Company's  or
                  Services' by-laws, any applicable  indemnification  agreement,
                  or applicable  law, in each case in effect at the time of such
                  act or omission; or

                           (4) any act or omission  with respect to which notice
                  of  termination  of  employment of the Executive is given more
                  than 12 months after the earliest  date on which any member of
                  the Board, not a party to the act or omission,  knew or should
                  have known of such act or omission.

                  c.  Any  termination  of  the  Executive's  employment  by the
         Employer for Cause shall be  communicated  to the Executive by a Notice
         of Termination.

         4.4      Good Reason.

              a.           During  the Post-Change  Period,  the  Executive  may
         terminate his or her employment for Good Reason.

                  b.       "Good Reason" means any of the following:

                  (1)      the   assignment  to  the  Executive  of  any  duties
                           inconsistent  in any  respect  with  the  Executive's
                           position   (including  offices,   titles,   reporting
                           requirements  or   responsibilities),   authority  or
                           duties as contemplated by Section 3.1 (a)(1),  or any
                           other action by the Company or Services which results
                           in a diminution on or other  material  adverse change
                           in such position, authority or duties;

                  (2)      any failure by the Company or Services to comply with
                           any of the provisions of Article III;

                  (3)      the Company's or Services' requiring the Executive to
                           be based at any  office or  location  other  than the
                           location described in Section 3.1(a)(2);

                  (4)      any other  material  adverse  change to the terms and
                           conditions of the Executive's employment; or



                                                                               9


<PAGE>


                  (5)      any  purported  termination  by the  Employer  of the
                           Executive's   employment   other  than  as  expressly
                           permitted  by  this  Agreement  (any  such  purported
                           termination  shall  not be  effective  for any  other
                           purpose under this Agreement).

         Any reasonable determination of "Good Reason" made in good faith by the
Executive shall be conclusive.

                  c. Any  termination  of  employment  by the Executive for Good
         Reason  shall  be   communicated   to  the  Employer  by  a  Notice  of
         Termination.  A  passage  of time  prior to  delivery  of a  Notice  of
         Termination  or a failure by the  Executive to include in the Notice of
         Termination any fact or circumstance  which contributes to a showing of
         Good  Reason  shall not waive any  right of the  Executive  under  this
         Agreement  or  preclude  the  Executive  from  asserting  such  fact or
         circumstance in enforcing rights under this Agreement.

                                   ARTICLE V.
                  OBLIGATIONS OF THE EMPLOYER UPON TERMINATION

         5.1 If by the Executive  for Good Reason or by the Employer  Other Than
for Cause or Disability.  If, during the Post-Change  Period, the Employer shall
terminate Executive's  employment other than for Cause or Disability,  or if the
Executive  shall  terminate  employment  for Good  Reason,  the  Employer  shall
immediately pay the Executive, in addition to all vested rights arising from the
Executive's  employment  as specified in Article III, a cash amount equal to the
sum of the following amounts:

                  a.  to the extent not previously  paid,  the  Guaranteed  Base
         Salary and any accrued vacation pay through the Termination Date;

                  b.  the  difference   between  (1)  the  product  of  (A)  the
         Guaranteed Bonus,  multiplied by (B) a fraction, the numerator of which
         is the  number  of days in the  Termination  Performance  Period  which
         elapsed before the  Termination  Date, and the  denominator of which is
         the total number of days in the Termination Performance Period, and (2)
         the amount of any  Guaranteed  Bonus  previously  paid to the Executive
         with respect to the Termination Performance Period;

                  c. all  amounts  previously  deferred  by or an accrual to the
         benefit of the Executive under any nonqualified  deferred  compensation
         or pension plan,  together with any accrued earnings  thereon,  and not
         yet paid by the Company or Services;

                  d. an amount equal to the product of (1) three (3)  multiplied
         by (2) the sum of (A) the Guaranteed Base Salary and (B) the Guaranteed
         Bonus;

                  e. an  amount  equal to the sum of the  value of the  unvested
         portion  of the  Executive's  accounts  or accrued  benefits  under any
         qualified  plan  maintained  by  the


                                                                              10


<PAGE>

         Company or Services, as of the Termination Date;

                  f. if the Company or Services  maintains any  cash-based  long
         term incentive bonus plan or arrangement,  an amount in satisfaction of
         the Company's or Services (as  applicable)  obligation to the Executive
         under  such plan or  arrangement  equal to the  amount  which  would be
         payable to the Executive if (i) the Company or Services (as applicable)
         attained target performance over the entire performance period and (ii)
         the  Executive  had  remained  employed  during the entire  performance
         period;

                  g. the  difference  between  (1) an amount  equal to the value
         (determined using the actuarial assumptions then applied by the Pension
         Benefit Guaranty Corporation for determining  immediate annuity present
         values)   of   the    Executive's    accrued    benefits    under   the
         Excess/Supplemental  Plans  (taking  into  account for benefit  accrual
         purposes the Executive's  entire period of service with the Company and
         its affiliates as reflected on the Company's Human Resources  database)
         calculated as though the  Executive  (A)  continued to accrue  benefits
         under the  Excess/Supplemental  Plans for a period of three years after
         the Termination Date, and (B) received compensation during each year of
         such  three-year  period equal to the sum of the Guaranteed Base Salary
         and the highest  Guaranteed Bonus paid (or payable) to the Executive in
         the three years preceding the Termination  Date, and (C) were three (3)
         years  older  than his age at the  Termination  Date and (2) the amount
         actually previously paid to Executive pursuant to Section 3.4; provided
         however,  that the amount  computed under this  paragraph  shall not be
         reduced  for  early  retirement,   early  payout  and  social  security
         benefits;  further  provided,  however,  that such amount shall be paid
         irrespective  of  whether  Executive  is vested  in any of the  Excess/
         Supplemental Plans; and

                  h.  pay  Executive  outplacement  services,  to a  maximum  of
         $25,000.

         Until the third  anniversary of the Termination Date or such later date
as any Plan of the Company or Services may specify,  the Employer shall continue
to provide to the Executive and shall provide to the Executive's  family welfare
benefits  (including,  without  limitation,   medical,   prescription,   dental,
disability,  individual life,  group life,  accidental death and travel accident
insurance plans and programs),  fringe benefits and other executive perquisites,
which are at least as favorable as the most  favorable  Plans of the Company and
Services applicable to Executive and other peer executives and their families as
of the Termination  Date, but which are in no event less favorable than the most
favorable  Plans of the Company and Services  applicable  to the  Executive  and
other peer  executives and their families  during the 90-day period  immediately
before the Effective  Date.  The cost to the Executive of such welfare  benefits
shall not exceed the cost of such benefits to the Executive  immediately  before
the  Termination  Date or, if less,  the  Effective  Date.  Notwithstanding  the
foregoing,  if the Executive is covered  under any medical,  life, or disability
insurance plan(s) provided by a subsequent employer, then the amount of coverage
required to be provided by the Employer hereunder shall be secondary to the


                                                                             11


<PAGE>

coverage  provided by the  subsequent  employer's  medical,  life, or disability
insurance  plan(s).  The  Executive's  rights  under  this  Section  shall be in
addition to, and not in lieu of, any post-termination  continuation  coverage or
conversion  rights the Executive may have pursuant to applicable law,  including
without limitation  continuation  coverage required by Section 4980B of the Code
and Section 601 et. seq. of the Employee Retirement Income Security Act of 1974,
as amended.

         5.2  If  by the Employer for  Cause.  If the  Employer  terminates  the
Executive's  employment for Cause during the Post-Change  Period, this Agreement
shall  terminate  without  further  obligation by the Employer to the Executive,
other  than  the  obligation  immediately  to pay  the  Executive  in  cash  the
Executive's Guaranteed Base Salary through the Termination Date, plus the amount
of any  compensation  previously  deferred  by the  Executive,  plus any accrued
vacation pay, in each case to the extent not previously paid.

         5.3  If by the Executive  Other Than for Good Reason.  If the Executive
  terminates  employment  during  the  Post-Change  Period  other  than for Good
  Reason,  Disability or death,  this Agreement shall terminate  without further
  obligations by the Employer,  other than the obligation immediately to pay the
  Executive  in cash all amounts  specified  in clauses  (a), (b) and (c) of the
  first  sentence  of  Section  5.1 (such  amounts  collectively,  the  "Accrued
  Obligations").

         5.4 If by the Employer for Disability.  If the Employer  terminates the
  Executive's  employment  by reason of the  Executive's  Disability  during the
  Post-Change Period, this Agreement shall terminate without further obligations
  to the Executive, other than

                  (a) the Employer's obligation immediately to pay the Executive
         in cash all Accrued Obligations, and

                  (b) the Executive's right after the Disability  Effective Date
         to receive  disability and other benefits at least equal to the greater
         of (1)  those  provided  under  the  most  favorable  disability  Plans
         applicable  to peer  executives  of the  Company or  Services in effect
         immediately before the Termination Date or (2) those provided under the
         most favorable  disability  Plans of the Company and Services in effect
         at any time during the 90-day period  immediately  before the Effective
         Date.

         5.5 If upon Death.  If the  Executive's  employment  is  terminated  by
  reason of the Executive's death during the Post-Change  Period, this Agreement
  shall  terminate   without  further   obligations  to  the  Executive's  legal
  representatives  under  this  Agreement,  other  than  the  obligation  of the
  Employer  immediately to pay the Executive's estate or beneficiary in cash all
  Accrued Obligations.  Despite anything in this Agreement to the contrary,  the
  Executive's family shall be entitled to receive benefits at least equal to the
  most favorable  benefits provided by the Company and Services to the surviving
  families of peer  executives of the Company or Services under such Plans,  but
  in no event  shall such  Plans  provide  benefits  which in each case are less
  favorable, in the aggregate,  than the most favorable of


                                                                              12


<PAGE>

   those provided by the Company and Services to the Executive  under such Plans
   in  effect at any time during the 90-day period immediately before the Effec-
   tive Date.

         5.6 Joint and Several Obligation. Whichever of the Company and Services
   is not the Employer shall be jointly and severally liable for the obligations
   of the Employer under this Article V.

                                   ARTICLE VI.
                            NON-EXCLUSIVITY OF RIGHTS

         6.1 Waiver of Other Severance  Rights.  To the extent that payments are
  made to the Executive pursuant to Section 5.1, the Executive hereby waives the
  right to receive  severance  payments under any other Plan or agreement of the
  Company or Services.

         6.2 Other  Rights.  Except as provided in Section 6.1 and in the second
  paragraph of this  Agreement,  this  Agreement  shall not prevent or limit the
  Executive's  continuing  or  future  participation  in  any  benefit,   bonus,
  incentive or other Plans,  provided by the Company or any of its  Subsidiaries
  and for which the Executive  may qualify,  nor shall this  Agreement  limit or
  otherwise  affect  such  rights  as the  Executive  may have  under  any other
  agreements  with the  Company or any of its  Subsidiaries.  Amounts  which are
  vested benefits or which the Executive is otherwise  entitled to receive under
  any Plan of the Company or any of its  Subsidiaries  and any other  payment or
  benefit  required by law at or after the Termination  Date shall be payable in
  accordance  with such Plan or applicable  law except as expressly  modified by
  this Agreement.

                                  ARTICLE VII.
                   CERTAIN ADDITIONAL PAYMENTS BY THE EMPLOYER

         7.1 Gross-up for Certain Taxes.  If it is determined (by the reasonable
  computation of the Employer's independent auditors, which determinations shall
  be  certified  to by such  auditors  and set  forth in a  written  certificate
  ("Certificate")  delivered  to the  Executive)  that any  benefit  received or
  deemed received by the Executive from the Company or Services pursuant to this
  Agreement  or  otherwise  (collectively,  the  "Payments")  is or will  become
  subject to any excise tax under  Section  4999 of the Code or any  similar tax
  payable  under any  United  States  federal,  state,  local or other law (such
  excise tax and all such similar taxes collectively,  "Excise Taxes"), then the
  Employer shall,  immediately  after such  determination,  pay the Executive an
  amount (the "Gross-up Payment") equal to the product of

                  (a) the amount of such Excise Taxes

  multiplied by

                  (b) the Gross-up Multiple (as defined in Section 7.4).


                                                                              13


<PAGE>

         The Gross-up  Payment is intended to  compensate  the Executive for the
   Excise Taxes and any federal, state, local or other income or excise taxes or
   other taxes payable by the Executive with respect to the Gross-up Payment.

         The  Executive or the Employer may at any time request the  preparation
  and  delivery to the  Executive  of a  Certificate.  The  Employer  shall,  in
  addition  to  complying  with  Section  7.2,  cause  all   determinations  and
  certifications under the Article to be made as soon as reasonably possible and
  in adequate time to permit the  Executive to prepare and file the  Executive's
  individual tax returns on a timely basis.

         7.2    Determination by the Executive.

                  a. If the Employer  shall fail to deliver a Certificate to the
         Executive  (and to pay to the  Executive  the  amount  of the  Gross-up
         Payment,  if any) within 14 days after  receipt from the Executive of a
         written request for a Certificate,  or if at any time following receipt
         of a  Certificate  the  Executive  disputes  the amount of the Gross-up
         Payment  set forth  therein,  the  Executive  may  elect to demand  the
         payment  of the  amount  which the  Executive,  in  accordance  with an
         opinion of  counsel to the  Executive  ("Executive  Counsel  Opinion"),
         determines to be the Gross-up Payment. Any such demand by the Executive
         shall be made by delivery to the  Employer  of a written  notice  which
         specifies  the Gross-up  Payment  determined  by the  Executive  and an
         Executive Counsel Opinion regarding such Gross-up Payment (such written
         notice and  opinion  collectively,  the  "Executive's  Determination").
         Within 14 days after delivery of the Executive's  Determination  to the
         Employer, the Employer shall either (1 ) pay the Executive the Gross-up
         Payment set forth in the Executive's Determination (less the portion of
         such amount, if any,  previously paid to the Executive by the Employer)
         or (2) deliver to the Executive a Certificate  specifying  the Gross-up
         Payment  determined by the Employer's  independent  auditors,  together
         with  an  opinion  of  the  Employer's   counsel  ("  Employer  Counsel
         Opinion"), and pay the Executive the Gross-up Payment specified in such
         Certificate. If for any reason the Employer fails to comply with clause
         (2) of the preceding  sentence,  the Gross-up Payment  specified in the
         Executive's Determination shall be controlling for all purposes.

                  b. If the  Executive  does not  make a  request  for,  and the
         Employer does not deliver to the Executive, a Certificate, the Employer
         shall,  for purposes of Section 7.3, be deemed to have  determined that
         no Gross-up Payment is due.

         7.3 Additional Gross-up Amounts.  If, despite the initial conclusion of
   the Employer  and/or the Executive that certain  Payments are neither subject
   to Excise Taxes nor to be counted in  determining  whether other Payments are
   subject to Excise Taxes (any such item, a "Non-Parachute  Item"), it is later
   determined  (pursuant  to the  subsequently-enacted  provisions  of the Code,
   final  regulations or published rulings of the IRS, final judgment of a court
   of competent jurisdiction or the Employer's independent auditors) that any of
   the Non-Parachute  Items are subject to Excise Taxes, or are to be counted in



                                                                              14


<PAGE>


   determining whether any Payments are subject to Excise Taxes, with the result
   that the amount of Excise Taxes  payable by the Executive is greater than the
   amount determined by the Employer or the Executive pursuant to Section 7.1 or
   7.2, as  applicable,  then the  Employer  shall pay the  Executive  an amount
   (which shall also be deemed a Gross-up Payment) equal to the product of

                  (a) the sum of (1) such  additional  Excise  Taxes and (2) any
           interest,  fines, penalties,  expenses or other costs incurred by the
           Executive as a result of having taken a position in accordance with a
           determination made pursuant to Section 7.1

   multiplied by

                  (b) the Gross-up Multiple.

         7.4 Gross-up  Multiple.  The Gross-up  Multiple shall equal a fraction,
   the  numerator  of which is one (1.0),  and the  denominator  of which is one
   (1.0) minus the sum,  expressed  as a decimal  fraction,  of the rates of all
   federal,  state,  local and other income and other taxes and any Excise Taxes
   applicable to the Gross-up Payment. (If different rates of tax are applicable
   to various portions of a Gross-up Payment, the weighted average of such rates
   shall be used.)

        7.5  Opinion  of  Counsel.  "Executive  Counsel  Opinion"  means a legal
   opinion of nationally recognized executive compensation counsel that there is
   a  reasonable  basis  to  support  a  conclusion  that the  Gross-up  Payment
   determined by the  Executive has been  calculated in accord with this Article
   and  applicable  law. " Employer  Counsel  Opinion"  means a legal opinion of
   nationally  recognized  executive  compensation  counsel  that (a) there is a
   reasonable  basis to support a conclusion that the Gross-up Payment set forth
   of the Certificate of Employer's  independent auditors has been calculated in
   accord with this Article and  applicable  law, and (b) there is no reasonable
   basis  for  the  calculation  of  the  Gross-up  Payment  determined  by  the
   Executive.

         7.6 Amount  Increased  or  Contested.  The  Executive  shall notify the
   Employer in writing of any claim by the IRS or other taxing  authority  that,
   if  successful,  would  require  the  payment by the  Employer  of a Gross-up
   Payment.  Such notice shall  include the nature of such claim and the date on
   which such claim is due to be paid.  The Executive  shall give such notice as
   soon as practicable,  but no later than 10 business days, after the Executive
   first obtains actual  knowledge of such claim;  provided,  however,  that any
   failure to give or delay in giving such notice  shall  affect the  Employer's
   obligations  under this  Article  only if and to the extent that such failure
   results in actual prejudice to the Employer. The Executive shall not pay such
   claim less than 30 days after the Executive gives such notice to the Employer
   (or,  if sooner,  the date on which  payment  of such  claim is due).  If the
   Employer  notifies the  Executive in writing  before the  expiration  of such
   period that it desires to contest such claim, the Executive shall:

                  a.  give  the  Employer  any  information  that it  reasonably
         requests relating to such claim,


                                                                              15


<PAGE>

                  b.  take such action in connection with  contesting such claim
         as the  Employer  reasonably  requests  in  writing  from time to time,
         including,  without  limitation,  accepting legal  representation  with
         respect  to  such  claim  by an  attorney  reasonably  selected  by the
         Employer,

                  c.  cooperate  with the Employer in good faith to contest such
         claim, and

                  d.  permit the  Employer  to  participate  in any  proceedings
         relating to such claim;

         provided,  however,  that the Employer  shall bear and pay directly all
         costs  and  expenses  (including  additional  interest  and  penalties)
         incurred in connection  with such contest and shall  indemnify and hold
         the Executive  harmless,  on an after-tax  basis, for any Excise Tax or
         income tax,  including  related  interest and  penalties,  imposed as a
         result  of such  representation  and  payment  of costs  and  expenses.
         Without  limiting  the  foregoing,   the  Employer  shall  control  all
         proceedings  in  connection  with such contest and, at its sole option,
         may pursue or forego any and all administrative  appeals,  proceedings,
         hearings and conferences  with the taxing  authority in respect of such
         claim and may, at its sole option,  either  direct the Executive to pay
         the tax  claimed  and sue for a  refund  or  contest  the  claim in any
         permissible manner. The Executive agrees to prosecute such contest to a
         determination before any administrative tribunal, in a court of initial
         jurisdiction and in one or more appellate courts, as the Employer shall
         determine;   provided,  however,  that  if  the  Employer  directs  the
         Executive to pay such claim and sue for a refund,  the  Employer  shall
         advance  the  amount  of  such   payment  to  the   Executive,   on  an
         interest-free basis and shall indemnify the Executive,  on an after-tax
         basis, for any Excise Tax or income tax,  including related interest or
         penalties,  imposed with respect to such advance;  and further provided
         that any extension of the statute of limitations relating to payment of
         taxes for the taxable year of the Executive  with respect to which such
         contested  amount  is  claimed  to be due is  limited  solely  to  such
         contested  amount.  The  Employer's  control  of the  contest  shall be
         limited to issues  with  respect to which a Gross-up  Payment  would be
         payable.  The Executive shall be entitled to settle or contest,  as the
         case  may  be,  any  other  issue  raised  by the IRS or  other  taxing
         authority.

        7.7  Refunds.  If, after  the  receipt  by the  Executive  of an  amount
advanced by the Employer pursuant to Section 7.6, the Executive becomes entitled
to receive any refund with respect to such claim,  the Executive  shall (subject
to the Employer's  complying with the  requirements of Section 7.6) promptly pay
the  Employer  the amount of such refund  (together  with any  interest  paid or
credited thereon after taxes applicable  thereto).  If, after the receipt by the
Executive  of an amount  advanced by the  Employer  pursuant  to Section  7.6, a
determination  is made that the  Executive  shall not be  entitled to any refund
with  respect to such claim and the  Employer  does not notify the  Executive in
writing of its intent to contest such determination  before the expiration of 30
days after such



                                                                              16


<PAGE>

determination,  then such advance shall be forgiven and shall not be required to
be repaid and the amount of such advance  shall offset,  to the extent  thereof,
the amount of Gross-up  Payment  required to be paid. Any contest of a denial of
refund shall be controlled by Section 7.6.

        7.8  Joint and Several Obligation. Whichever of the Company and Services
is not the Employer shall be jointly and severally liable for the obligations of
the Employer  under this Article VII. In the event of any assertion of liability
under this  Section 7.8 against  whichever of the Company or Services is not the
Employer,  the party against which such  liability is asserted  shall succeed to
all of the rights and obligations of the Employer under Article VII.

                                  ARTICLE VIII.
                              EXPENSES AND INTEREST

         8.1  Legal Fees and Other Expenses.

               a.    If the Executive incurs legal, accounting and other fees or
         other  expenses in a good faith  effort to obtain  benefits  under this
         Agreement (including,  without limitation,  the fees and other expenses
         of the Executive's  legal counsel and the accounting and other fees and
         expenses in connection with the delivery of the Opinion  referred to in
         Article VII),  regardless of whether the Executive ultimately prevails,
         the Employer shall  reimburse the Executive on a monthly basis upon the
         written request for such fees and expenses to the extent not reimbursed
         under the  Company's and  Services'  officers and  directors  liability
         insurance  policy,  if any. The  existence of any  controlling  case or
         controlling  regulatory  law which is  directly  inconsistent  with the
         position  taken by the  Executive  shall be evidence that the Executive
         did not act in good faith.

               b.     Reimbursement  of legal  fees and  expenses  shall be made
         monthly  upon the written  submission  of a request  for  reimbursement
         together  with evidence that such fees and expenses are due and payable
         or were paid by the Executive.  If the Employer  shall have  reimbursed
         the  Executive  for legal fees and expenses and it is later  determined
         that the  Executive  was not acting in good faith,  all amounts paid on
         behalf of, or reimbursed to, the Executive  shall be promptly  refunded
         to the Employer.

         8.2  Interest.  If the  Employer  does  not pay any  amount  due to the
Executive  under this  Agreement  within three days after such amount became due
and owing,  interest shall accrue on such amount from the date it became due and
owing  until the date of payment at a annual  rate equal to two  percent  (2.0%)
above the base  commercial  lending  rate  announced  by The Bank of  America in
effect from time to time during the period of such nonpayment.

         8.3 Joint and Several Obligation. Whichever of the Company and Services
is not the Employer shall be jointly and severally liable for the obligations of
the Employer  under


                                                                              17


<PAGE>


this  Article  VIII.  The right of refund  referred  to in the last  sentence of
Section 8.1 b. shall inure to  whichever  of the Company or Services  originally
paid the reimbursement to the Executive.

                                   ARTICLE IX.
                            NO SET-OFF OR MITIGATION

         9.1 No Set-off by Company or Services. The Executive's right to receive
when due the payments and other  benefits  provided for under this  Agreement is
absolute,  unconditional  and  subject to no set-off,  counterclaim  or legal or
equitable defense.  Time is of the essence in the performance by the Company and
Services of their obligations under this Agreement.  Any claim which the Company
or  Services  may have  against  the  Executive,  whether  for a breach  of this
Agreement or otherwise,  shall be brought in a separate action or proceeding and
not as part of any action or proceeding  brought by the Executive to enforce any
rights against the Company or Services under this Agreement.

         9.2 No  Mitigation.  The Executive  shall not have any duty to mitigate
the amounts  payable by the Company or Services  under this Agreement by seeking
new employment following termination.  Except as specifically otherwise provided
in this Agreement,  all amounts payable pursuant to this Agreement shall be paid
without  reduction  regardless of any amounts of salary,  compensation  or other
amounts  which may be paid or  payable  to the  Executive  as the  result of the
Executive's employment by another employer.

                                   ARTICLE X.
                       CONFIDENTIALITY AND NON-COMPETITION

         10.1 Confidentiality.  Executive  acknowledges that it is the policy of
   the Company and its  Subsidiaries to maintain as secret and  confidential all
   valuable and unique information and techniques acquired, developed or used by
   the Company and its  Subsidiaries  relating  to their  business,  operations,
   employees  and  customers,  which gives the Company  and its  Subsidiaries  a
   competitive  advantage  in the  businesses  in  which  the  Company  and  its
   Subsidiaries are engaged ("Confidential  Information").  Executive recognizes
   that all such Confidential  Information is the sole and exclusive property of
   the  Company  and its  Subsidiaries,  and  that  disclosure  of  Confidential
   Information would cause damage to the Company and its Subsidiaries. Executive
   agrees  that,  except as  required by the duties of his  employment  with the
   Company and/or its  Subsidiaries  and except in connection with enforcing the
   Executive's  rights  under  this  Agreement  or if  compelled  by a court  or
   governmental  agency,  he will  not,  without  the  consent  of the  Company,
   disseminate  or otherwise  disclose  any  Confidential  Information  obtained
   during his employment with the Company and/or its Subsidiaries for so long as
   such information is valuable and unique.

         10.2     Non-competition/ Non-solicitation.


                                                                              18


<PAGE>

                  a. Executive agrees that,  during the period of his employment
         with the Company and/or its Subsidiaries and, if Executive's employment
         is terminated for any reason,  thereafter for a period of one (1) year,
         Executive will not at any time directly or indirectly, in any capacity,
         engage or participate  in, or become  employed by or render advisory or
         consulting or other services in connection with any Prohibited Business
         as defined in Section 10.2(d).

                  b. Executive agrees that,  during the period of his employment
         with the Company and/or its Subsidiaries and, if Executive's employment
         is terminated for any reason,  thereafter for a period of one (1) year,
         Executive shall not make any financial investment,  whether in the form
         of equity or debt, or own any interest,  directly or indirectly, in any
         Prohibited  Business.  Nothing in this Section 10.2(b) shall,  however,
         restrict  Executive  from making any  investment  in any company  whose
         stock is listed on a national securities exchange or actively traded in
         the over-the-counter market; provided that (1) such investment does not
         give  Executive the right or ability to control or influence the policy
         decisions of any Prohibited Business,  and (2) such investment does not
         create a conflict of interest between  Executive's duties hereunder and
         Executive's interest in such investment.

                  c. Executive agrees that,  during the period of his employment
         with the Company and/or its Subsidiaries and, if Executive's employment
         is terminated for any reason,  thereafter for a period of one (1) year,
         Executive  shall not (1) employ any employee of the Company  and/or its
         Subsidiaries  or  (2)  interfere  with  the  Company's  or  any  of its
         Subsidiaries'  relationship  with,  or endeavor to entice away from the
         Company and/or its Subsidiaries any person, firm, corporation, or other
         business organization who or which at any time (whether before or after
         the date of Executive's  termination of  employment),  was an employee,
         customer,  vendor or supplier of, or maintained a business relationship
         with,  any business of the Company  and/or its  Subsidiaries  which was
         conducted  at any time during the period  commencing  one year prior to
         the termination of employment.

                  d. For the purpose of this Section 10.2, "Prohibited Business"
         shall be  defined as any entity  and any  branch,  office or  operation
         thereof,  which is a direct and material competitor of the Company and/
         or its Subsidiaries  wherever the Company and/ or its Subsidiaries does
         business, in the United States or abroad.

         10.3 Remedy.  Executive and the Company specifically agree that, in the
event that  Executive  shall  breach his  obligations  under this Article X, the
Company  and its  Subsidiaries  will suffer  irreparable  injury and no adequate
remedy for such breach, and shall be entitled to injunctive relief therefor, and
in particular,  without  limiting the  generality of the foregoing,  the Company
shall not be precluded  from pursuing any and all remedies it may have at law or
in equity for breach of such obligations;  provided,  however,  that such breach
shall not in any manner or degree whatsoever  limit,  reduce or otherwise affect
the  obligations  of the Company and Services  under this  Agreement,  and in no
event shall an asserted breach of the Executive's obligations under this Article
X constitute a basis for


                                                                              19


<PAGE>

deferring or withholding  any amounts  otherwise  payable to the Executive under
this Agreement.

                                   ARTICLE XI.
                                  MISCELLANEOUS

         11.1 No Assignability.  This Agreement is personal to the Executive and
without  the prior  written  consent of the Company  and  Services  shall not be
assignable  by the Executive  otherwise  than by will or the laws of descent and
distribution. This Agreement shall inure to the benefit of and be enforceable by
the Executive's legal representatives.

         11.2  Successors.  This Agreement  shall inure to the benefit of and be
binding upon the Company,  Services and their respective successors and assigns.
The Company and Services will require any successor (whether direct or indirect,
by purchase, merger,  consolidation or otherwise) to all or substantially all of
their  respective  businesses or assets to assume expressly and agree to perform
this  Agreement  in the same  manner and to the same  extent that the Company or
Services,  as applicable,  would be required to perform it if no such succession
had taken place.  Any successor to the business  and/or assets of the Company or
Services  which assumes or agrees to perform this Agreement by operation of law,
contract,  or otherwise  shall be jointly and severally  liable with the Company
and  Services  under this  Agreement  as if such  successor  were the Company or
Services, as applicable.

         11.3 Payments to  Beneficiary.  If the Executive dies before  receiving
amounts to which the Executive is entitled  under this  Agreement,  such amounts
shall be paid in a lump sum to the  beneficiary  designated  in  writing  by the
Executive, or if none is so designated, to the Executive's estate.

         11.4 Non-alienation of Benefits.  Benefits payable under this Agreement
shall not be subject in any manner to anticipation,  alienation, sale, transfer,
assignment, pledge, encumbrance,  charge, garnishment,  execution or levy of any
kind,  either  voluntary or  involuntary,  before actually being received by the
Executive,  and any such  attempt to dispose  of any right to  benefits  payable
under this Agreement shall be void.

         11.5  Severability.  If any one or more  articles,  sections  or  other
portions of this Agreement are declared by any court or  governmental  authority
to be unlawful or invalid,  such  unlawfulness or invalidity  shall not serve to
invalidate any article,  section or other portion not so declared to be unlawful
or invalid. Any article,  section or other portion so declared to be unlawful or
invalid  shall be  construed  so as to  effectuate  the  terms of such  article,
section or other portion to the fullest extent possible while  remaining  lawful
and valid.

         11.6  Amendments.  Except as provided in Sections 2.2 and 11.14 hereof,
this  Agreement  shall not be  altered,  amended or  modified  except by written
instrument executed by the Company, Services and Executive.


                                                                              20


<PAGE>

         11.7 Notices. All notices and other communications under this Agreement
shall be in  writing  and  delivered  by hand or by first  class  registered  or
certified mail, return receipt requested, postage prepaid, addressed as follows:

                                    If to the Executive:
                                    (FirstName) (LastName)
                                    (Address1)
                                    (City) (State) (PostalCode)


                                    If to the Company:

                                    Safety-Kleen Services, Inc.
                                    1301 Gervais Street, Suite 300
                                    Columbia, South Carolina  29201
                                    Attention: Vice President, Administration



                                                                              21


<PAGE>


                                    If to Services:
                                    Safety-Kleen Services, Inc.
                                    1301 Gervais Street, Suite 300
                                    Columbia, South Carolina  29201
                                    Attention: Vice President, Administration

or to such other  address as either  party shall have  furnished to the other in
writing.  Notice and communications shall be effective when actually received by
the addressee.

         11.8  Counterparts.  This  Agreement  may be  executed  in one or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together constitute one and the same instrument.

         11.9 Governing Law. This Agreement  shall be interpreted  and construed
in accordance with the laws of the State of South Carolina without regard to its
choice of law principles.

         11.10  Captions.  The captions of this  Agreement are not a part of the
provisions hereof and shall have no force or effect.

         11.11 Tax  Withholding.  The Company and Services may withhold from any
amounts payable under this Agreement any federal,  state or local taxes that are
required to be withheld pursuant to any applicable law or regulation.

         11.12  No  Waiver.  The  Executive's  failure  to  insist  upon  strict
compliance  with any provision of this Agreement shall not be deemed a waiver of
such  provision  or any  other  provision  of this  Agreement.  A waiver  of any
provision of this Agreement shall not be deemed a waiver of any other provision,
and any waiver of any default in any such provision shall not be deemed a waiver
of any later default thereof or of any other provision.

         11.13   Entire   Agreement.   This   Agreement   contains   the  entire
understanding  of the Company and Services and the Executive with respect to its
subject matter.

         11.14 Cancellation.  The Company and Services may, at any time prior to
a Change in Control, unilaterally cancel this Agreement on behalf of all parties
hereto by both of them (and not only one of them)  notifying  the  Executive  of
such  cancellation in writing at least twelve (12) months prior to the effective
date of the  cancellation,  provided  however  that no such  notice may be given
after an Imminent Change of Control Date.



                                                                              22


<PAGE>



         IN WITNESS  WHEREOF,  the  Executive,  Services  and the  Company  have
executed this Agreement as of the date first above written.



                                    --------------------------------------
                                    (FirstName) (LastName) (the Executive)

                                    SAFETY-KLEEN CORP.
                                    By:
                                        -------------------------------
                                    Kenneth W. Winger
                                    President & Chief Executive Officer

                                    SAFETY-KLEEN SERVICES, INC.
                                     By:
                                        -------------------------------
                                    Kenneth W. Winger
                                    President


                                                                              23




                                Exhibit (10)(n)

                                 SAFETY-KLEEN
                    CHANGE OF CONTROL SEVERANCE AGREEMENT
                             (FirstName) (LastName)


<PAGE>


                              TABLE OF CONTENTS
                                                                        Page
ARTICLE I. - PURPOSES                                                     1

ARTICLE II. - CERTAIN DEFINITIONS                                         1
      2.1   Accrued Obligations                                           1
      2.2   Agreement Term                                                1
      2.3   Article                                                       2
      2.4   Beneficial owner                                              2
      2.5   Cause                                                         2
      2.6   Change of Control                                             2
      2.7   Code                                                          2
      2.8   Disability                                                    2
      2.9   Effective Date                                                2
      2.10  Good Reason                                                   3
      2.11  Gross-up Payment                                              3
      2.12  Imminent Change of Control Date                               3
      2.13  IRS                                                           3
      2.14  1934 Act                                                      3
      2.15  Notice of Termination                                         3
      2.16  Plans                                                         3
      2.17  Policies                                                      3
      2.18  Post-Change Period                                            3
      2.19  SEC                                                           3
      2.20  Section                                                       3
      2.21  Subsidiary                                                    3
      2.22  Termination Date                                              4
      2.23  Termination Performance Period                                4
      2.24  Voting Securities                                             4

ARTICLE III. - POST-CHANGE PERIOD PROTECTIONS                             4
      3.1  Position and Duties                                            4
      3.2  Compensation                                                   5
      3.3  Stock Options                                                  7
      3.4  Excess / Supplemental Plans                                    7

ARTICLE IV. - TERMINATION OF EMPLOYMENT                                   8
      4.1  Disability                                                     8
      4.2  Death                                                          8
      4.3  Cause                                                          8
      4.4  Good Reason                                                    9

ARTICLE V. - OBLIGATIONS OF THE COMPANY UPON TERMINATION                  10
      5.1  If by the Executive for Good Reason or by the Company
           Other Than for
<PAGE>
           Cause or Disability                                            10
      5.2  If by the Company for Cause                                    12
      5.3  If by the Executive Other Than for Good Reason                 12
      5.4  If by the Company for Disability                               12
      5.5  If upon Death                                                  12
      5.6  Joint and Several Obligation                                   12

ARTICLE VI. - NON-EXCLUSIVITY OF RIGHTS                                   13
      6.1  Waiver of Other Severance Rights                               13
      6.2  Other- Rights                                                  13

ARTICLE VII. - CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY                 13
      7.1  Gross-up for Certain Taxes                                     13
      7.2  Determination by the Executive                                 13
      7.3  Additional Gross-up Amounts                                    14
      7.4  Gross-up Multiple                                              15
      7.5  Opinion of Counsel                                             15
      7.6  Amount Increased or Contested                                  15
      7.7  Refunds                                                        16
      7.8  Joint and Several Obligation                                   16

ARTICLE VIII. - EXPENSES AND INTEREST                                     17
      8.1  Legal Fees and Other Expenses                                  17
      8.2  Interest                                                       17

ARTICLE IX. - NO SET-OFF OR MITIGATION                                    17
      9.1  No Set-off by Company                                          17
      9.2  No Mitigation                                                  18

ARTICLE X. - CONFIDENTIALITY AND NON-COMPETITION                          18
      10.1  Confidentiality                                               18
      10.2  Non-competition/ Non-Solicitation                             18
      10.3  Remedy                                                        19

ARTICLE XI. - MISCELLANEOUS                                               19
      11.1   No  Assignability                                            19
      11.2   Successors                                                   19
      11.3   Payments to Beneficiary                                      19
      11.4   Non-alienation of Benefits                                   20
      11.5   Severability                                                 20
      11.6   Amendments                                                   20
      11.7   Notices                                                      20
      11.8   Counterparts                                                 21
      11.9   Governing Law                                                21
      11.10  Captions                                                     21

<PAGE>

      11.11  Tax Withholding                                              21
      11.12  No Waiver                                                    21
      11.13  Entire Agreement                                             21
      11.14  Cancellation                                                 21


<PAGE>


                                  SAFETY-KLEEN.

                      CHANGE OF CONTROL SEVERANCE AGREEMENT


      THIS  AGREEMENT  dated as of October 6, 1999,  is made among SAFETY- KLEEN
CORP.,  a  Delaware  corporation  having  its  principal  place of  business  in
Columbia,  South  Carolina  (the  "Company"),  SAFETY-KLEEN  SERVICES,  INC.,  a
Delaware  corporation having its principal place of business in Columbia,  South
Carolina and a wholly owned  subsidiary of the Company  ("Services")  and (name)
(the "Executive"), a resident of SC.

      The  Company,  Services  and  the  Executive  agree  that  this  agreement
supersedes any prior agreement between any of them which  specifically  provides
benefits upon a change in control of the Company or Services,  and further agree
that, if benefits become payable to the Executive  pursuant to Article V hereof,
such benefits will be in lieu of any other severance or termination  benefits to
which the Executive  otherwise  would be entitled  under any other  severance or
termination plan, policy or arrangement of the Company or Services.

                                ARTICLE I.
                                PURPOSES

     The  Board of  Directors  of the  Company  (the  "Board")  and the Board of
Directors of Services have  determined  that it is in the best  interests of the
Company and its  stockholders,  and of Services,  to assure that the Company and
Services  will  have  the  continued  service  of  the  Executive,  despite  the
possibility or occurrence of a change of control of the Company or Services. The
Board believes it is imperative to reduce the  distraction of the Executive that
would result from the personal  uncertainties  caused by a pending or threatened
change of control, to encourage the Executive's full attention and dedication to
the Company and Services,  and to provide the Executive  with  compensation  and
benefits   arrangements   upon  a  change  of  control  which  ensure  that  the
expectations of the Executive will be satisfied and are  competitive  with those
of  similarly-situated  corporations.  This  Agreement is intended to accomplish
these objectives.

                                ARTICLE II.
                            CERTAIN DEFINITIONS

     When used in this  Agreement,  the terms  specified  below  shall  have the
following meanings:

      2.1 "Accrued Obligations" -- see Section 5.3.

      2.2  "Agreement  Term"  means the  period  commencing  on the date of this
Agreement and ending on the date which is twelve (12) months  following the date
that both

                                                                               1
<PAGE>

the Company and Services give notice of  cancellation  pursuant to Section 11.14
hereof (the "Expiration Date"); provided, however, that if an Imminent Change of
Control Date occurs before the  Expiration  Date,  then the Agreement Term shall
automatically extend to a date which is twelve (12) months after the date of the
Imminent  Change of Control  Date:  and  provided  further,  that if a Change of
Control   occurs  before  the  Expiration   Date,  the  Expiration   Date  shall
automatically be extended to the last day of the Post-Change Period.

      2.3  "Article" means an article of this Agreement.

      2.4  "Beneficial  owner"  means such term as defined in Rule 13d-3 of the
            SEC under the 1934 Act.

      2.5  "Cause" - see Section 4.3(b).

      2.6  "Change of Control" means,  except as otherwise  provided  below, the
occurrence of any of the following:

            a. (X) any person (as such term is used in Rule  13(d)- 5 of the SEC
      under the 1934 Act) or group (as such term is defined in Section  13(d) of
      the 1934 Act),  other than a Subsidiary  or any employee  benefit plan (or
      related  trust) of the Company or a  Subsidiary,  becomes  the  beneficial
      owner of 15% or more of the  common  stock  of the  Company  or of  Voting
      Securities  representing  15% or more of the combined  voting power of all
      Voting  Securities  of the  Company,  (Y)  Laidlaw  Inc.  ceases to be the
      beneficial owner,  directly or indirectly,  of 43.6% or more of the Voting
      Securities  of the  Company and (Z)  another  person or group  becomes the
      beneficial  owner of Voting  Securities of the Company  which  represent a
      larger number of Voting Securities than those held by Laidlaw Inc.
            b. within a period of 24 months or less, the individuals  who, as of
      any date,  constitute the Board (the "Incumbent  Directors") cease for any
      reason to constitute at least a majority of the Board unless at the end of
      such period,  the majority of individuals then constituting the Board were
      nominated  upon  the   recommendation  of  a  majority  of  the  Incumbent
      Directors.
            c. the sale or other  disposition of all or substantially all of the
      assets of the Company or Services.
            d. the sale or other  disposition  by the  Company of 50% or more of
      the Voting  Securities of Services or any other  transaction which results
      in any person,  other than the  Company or a  subsidiary  or any  employee
      benefit plan of the Company,  becoming the beneficial owner of 50% or more
      of the Voting Securities of Services.

      2.7  "Code" means the Internal Revenue Code of 1986, as amended.

      2.8  "Disability" -- see Section 4.1(b).




                                                                               2
<PAGE>

      2.9  "Effective  Date"  means the first  date on which a Change of Control
occurs  during the Agreement  Term.  Despite  anything in this  Agreement to the
contrary,  if the  Company or Services  terminates  the  Executive's  employment
before  the  date  of a  Change  of  Control,  and if the  Executive  reasonably
demonstrates  that such  termination  of employment  (a) was at the request of a
third party who had taken steps  reasonably  calculated  to effect the Change of
Control or (b) otherwise  arose in connection with or anticipation of the Change
of Control,  then "Effective  Date" shall mean the date  immediately  before the
date of such termination of employment.

      2.10 "Employer"  means whichever of the Company or Services is the primary
common-law employer of the Executive at the relevant time.

      2.11 "Good Reason" -- see Section 4.4(b).

      2.12 "Gross-up Payment" -- see Section 7.1.

      2.13 "Imminent  Change of Control Date" means any date on which occurs (a)
a presentation to the Company's  stockholders  generally or any of the Company's
directors or executive  officers of a proposal or offer for a Change of Control,
or (b) the public announcement (whether by advertisement,  press release,  press
interview, public statement, SEC filing or otherwise) of a proposal or offer for
a Change of  Control,  and in case of either (a) or (b) such  proposal  or offer
remains effective and unrevoked.

      2.14 "IRS" means the Internal Revenue Service.

      2.15  "1934 Act" means the Securities Exchange Act of 1934.

      2.16 "Notice of  Termination"  means a written  notice given in accordance
with  Section 11.7 which sets forth (a) the  specific  termination  provision in
this  Agreement  relied upon by the party giving such notice,  (b) in reasonable
detail the facts and circumstances claimed to provide a basis for termination of
the  Executive's  employment  under such  termination  provision  and (c) if the
Termination  Date  is  other  than  the  date  of  receipt  of  such  Notice  of
Termination, the Termination Date.

      2.17 "Plans" means plans,  programs,  policies or practices of the Company
and Services.

      2.18 "Policies" means policies, practices or procedures of the Company and
Services.

      2.19  "Post-Change  Period"  means the period  commencing on the Effective
Date and ending on the third anniversary of such date.

      2.20 "SEC" means the Securities and Exchange Commission.



                                                                               3
<PAGE>


      2.21 "Section" means,  unless the context otherwise  requires,  a section
of this Agreement.

      2.22 "Subsidiary"  means a corporation as defined in Section 424(f) of the
Code with the Company being treated as the employer  corporation for purposes of
this definition.

      2.23  "Termination  Date"  means  the date of  receipt  of the  Notice  of
Termination  or any later date specified in such notice (which date shall be not
more  than 15 days  after  the  giving  of such  notice),  as the  case  may be;
provided,   however,  that  (a)  if  the  Company  or  Services  terminates  the
Executive's employment other than for Cause or Disability,  then the Termination
Date shall be the date of receipt of such Notice of  Termination  and (b) if the
Executive's employment is terminated by reason of death or Disability,  then the
Termination  Date shall be the date of death of the Executive or the "Disability
Effective Date" (as defined in Section 4.1), as the case may be.

      2.24 "Termination Performance Period" - see Section 3.2(b)(2).

      2.25  "Voting  Securities"  of a  corporation  means  securities  of  such
corporation  that are entitled to vote generally in the election of directors of
such corporation.

                               ARTICLE III.
                      POST-CHANGE PERIOD PROTECTIONS

      3.1 Position and Duties.

            a. During the Post-Change Period, (1) the Executive's  position with
      the Company and  Services,  (in the case of a Change of Control  involving
      the  Company)  or with  Services  (in  the  case of a  Change  of  Control
      involving Services) (including offices, titles, reporting requirements and
      responsibilities),  authority and duties shall be at least commensurate in
      all material  respects with the most significant of those held,  exercised
      and assigned at any time during the 90-day period  immediately  before the
      Effective Date and (2) the Executive's  services shall be performed at the
      location where the Executive was employed immediately before the Effective
      Date or any other location less than 40 miles from such former location.

            b.  During  the  Post-Change  Period  (other  than  any  periods  of
      vacation,  sick leave or  disability  to which the Executive is entitled),
      the Executive  agrees to devote the Executive's full attention and time to
      the business  and affairs of the Company and  Services  and, to the extent
      necessary to discharge the duties  assigned to the Executive in accordance
      with this  Agreement,  to use the  Executive's  best  efforts  to  perform
      faithfully and efficiently such duties. During the Post-Change Period, the
      Executive  may (1)  serve on  corporate,  civic or  charitable  boards  or
      committees, (2) deliver lectures, fulfill speaking engagements or teach at
      educational  institutions and (3) manage personal investments,  so long as
      such  activities  are  consistent  with the  Policies  of the  Company  or
      Services at the Effective Date and do not significantly


                                                                               4
<PAGE>


      interfere  with the  performance  of the  Executive's  duties  under  this
      Agreement.  To the extent that any such  activities have been conducted by
      the  Executive  before the  Effective  Date and were  consistent  with the
      Policies of the Company and Services at the Effective  Date, the continued
      conduct of such  activities  (or  activities  similar in nature and scope)
      after  the  Effective  Date  shall not be  deemed  to  interfere  with the
      performance of the Executive's duties under this Agreement.

      3.2 Compensation.

            a. Base  Salary.  During the  Post-Change  Period,  the  Company and
      Services  shall pay or cause to be paid to the  Executive  an annual  base
      salary in cash ("Guaranteed Base Salary"), which shall be paid in a manner
      consistent   with  the  Company's  or  Services'  (as  applicable  to  the
      Executive)  payroll practices in effect  immediately  before the Effective
      Date at a rate at least equal to 12 times the highest  monthly base salary
      paid or payable to the Executive by the Company and Services in respect of
      the 12-month  period  immediately  before the Effective  Date.  During the
      Post-Change  Period, the Guaranteed Base Salary shall be reviewed at least
      annually and shall be increased at any time and from time to time as shall
      be substantially consistent with increases in base salary awarded to other
      peer  executives of the Company and  Services.  Any increase in Guaranteed
      Base Salary shall not limit or reduce any other  obligation of the Company
      and  Services  to the  Executive  under  this  Agreement.  After  any such
      increase,  the  Guaranteed  Base Salary  shall not be reduced and the term
      "Guaranteed Base Salary" shall thereafter refer to the increased amount.

            b. Target  Bonus.  During the  Post-Change  Period,  the Company and
      Services  shall  pay or cause  to be paid to the  Executive  a bonus  (the
      "Guaranteed  Bonus")  for each  Performance  Period  which ends during the
      Post-Change  Period.  "Performance  Period"  means  each  period  of  time
      designated  in  accordance  with any bonus  arrangement  of the Company or
      Services  ("Bonus Plan") which is based upon  performance  and approved by
      the Board or any committee of the Board.  The Guaranteed Bonus shall be at
      least equal to the greatest of:

            (1)   the On Plan  Bonus,  which shall mean the cash bonus which the
                  Executive   would   accrue   under  any  Bonus  Plan  for  the
                  Performance  Period for which the Guaranteed  Bonus is awarded
                  ("Current  Performance Period") as if the performance achieved
                  100% of plan  established  pursuant to such Bonus Plan and the
                  maximum level of the discretionary portion is achieved;

            (2)   the  Actual  Bonus,  which  shall  mean the cash  bonus  which
                  Executive  would  accrue  under any Bonus Plan for the Current
                  Performance  Period  if the  performance  during  the  Current
                  Performance  Period  were  measured  by  actual   performance;
                  provided,  however,  that for  purposes  of  Article V of this
                  Agreement,  the  Actual  Bonus for the  Performance  Period in
                  which  the   Termination   Date  occurred  (the   "Termination


                                                                               5
<PAGE>


                  Performance  Period")  shall not be less  than the cash  bonus
                  which the  Executive  would  accrue  under  any Bonus  Plan if
                  performance  during that Termination  Performance  Period were
                  measured  by the actual  performance  during  the  Termination
                  Performance  Period before the  Termination  Date projected to
                  the last day of such Performance  Period and the maximum level
                  of the discretionary portion is achieved; and

            (3)   the Historical Bonus, which shall mean the greatest bonus that
                  the  Executive  accrued under any Bonus Plan in the last three
                  (3)  Performance  Periods  that ended  before the  Post-Change
                  Period;  provided,  however, that for purposes of Article V of
                  this  Agreement,  the  Historical  Bonus  for the  Performance
                  Period in which the  Termination  Date  occurred  shall not be
                  less than the cash  bonus  that the  Executive  accrued in the
                  last  Performance  Period  that ended  before the  Termination
                  Date.

            c.  Incentive,   Savings  and  Retirement   Plans.  In  addition  to
      Guaranteed  Base Salary and  Guaranteed  Bonus payable as provided in this
      Section,  the  Executive  shall be  entitled  to  participate  during  the
      Post-Change  Period in all  incentive  (including  long-term  incentives),
      savings and retirement  Plans  applicable to other peer  executives of the
      Company  and  Services,  but in no event  shall  such  Plans  provide  the
      Executive with incentive  (including  long-term  incentives),  savings and
      retirement benefits which are less favorable,  in the aggregate,  than the
      most  favorable  of those  provided  by the  Company  or  Services  to the
      Executive or to peer executives  under such Plans as in effect at any time
      during the 90-day period immediately before the Effective Date.

            d.  Welfare  Benefit  Plans.  During  the  Post-Change  Period,  the
      Executive and the Executive's  family shall be eligible to participate in,
      and receive all benefits  under,  welfare  benefit  Plans  provided by the
      Company and Services(including, without limitation, medical, prescription,
      dental,   disability,   individual  life,  group  life,   dependent  life,
      accidental  death and travel accident  insurance  Plans) and applicable to
      other peer executives of the Company and Services and their families,  but
      in no event shall such Plans provide  benefits  which in any case are less
      favorable, in the aggregate,  than the most favorable of those provided to
      the Executive or to peer  executives  under such Plans as in effect at any
      time during the 90-day period immediately before the Effective Date.

            e. Fringe  Benefits.  During the Post-Change  Period,  the Executive
      shall be entitled to fringe  benefits and other  executive  perquisites in
      accordance with the most favorable Plans  applicable to peer executives of
      the Company and Services,  but in no event shall such Plans provide fringe
      benefits  and  other  executive  perquisites  which  in any  case are less
      favorable, in the aggregate,  than the most favorable of those provided by
      the Company and Services to the Executive or to peer executives


                                                                               6
<PAGE>


      under  such  Plans  in  effect  at  any  time  during  the  90-day  period
      immediately before the Effective Date.

            f. Expenses.  During the Post-Change  Period, the Executive shall be
      entitled  to prompt  reimbursement  of all  reasonable  employment-related
      expenses  incurred by the  Executive  upon the  Company's or Services' (as
      applicable)  receipt of accountings in accordance  with the most favorable
      Policies applicable to peer executives of the Company and Services, but in
      no event shall such Policies be less favorable, in the aggregate, than the
      most  favorable  of those  provided  by the  Company  and  Services to the
      Executive or to peer executives  under such Policies in effect at any time
      during the 90-day period immediately before the Effective Date.

            g. Office and Support  Staff.  During the  Post-Change  Period,  the
      Executive  shall be  entitled  to an office or  offices of a size and with
      furnishings and other appointments,  and to exclusive personal secretarial
      and  other  assistance  in  accordance  with the most  favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

            h. Vacation.  During the Post-Change  Period, the Executive shall be
      entitled to paid vacation in accordance  with the most favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

      3.3   Stock Options.

      In  addition  to the  other  benefits  provided  in this  Section,  on the
Effective  Date, the Employer shall pay to the Executive a lump-sum cash payment
equal to the spread (fair market value over exercise  price) of all  outstanding
options  granted  to the  Executive  for shares of common  stock of the  Company
whether vested or not vested on the Effective Date. Whichever of the Company and
Services  is not the  Employer,  shall be jointly and  severally  liable for the
obligation of the Employer under this Section 3.3.

      3.4  Excess/Supplemental  Plans.  (NOTE: THIS SECTION 3.4 IS APPLICABLE IF
AND  ONLY IF  YOUR  PARTICIPATION  IN THE  SAFETY-KLEEN  SUPPLEMENTAL  EXECUTIVE
RETIREMENT PLAN IS APPROVED BY THE HUMAN RESOURCES AND COMPENSATION COMMITTEE OF
THE COMPANY'S BOARD OF DIRECTORS)


      In  addition  to the  other  benefits  provided  in this  Section,  on the
Effective Date, the Employer shall pay to Executive an amount equal to the value
(determined  using  (i) the  interest  rate  published  by the  PBGC,  as of the
calendar month immediately prior to the


                                                                               7
<PAGE>


  Effective  Date, for the specific  purpose of determining the present value of
  lump sum benefits as discussed in 29 C.F.R.  4044 and (ii) the UP 84 Mortality
  Table)  of  the  Executive's  accrued  benefits  under  (1)  the  Safety-Kleen
  Supplemental  Executive  Retirement  Plan, or (2) any such  successor  plan or
  other nonqualified  unfunded  retirement Plan as may be in effect as of (or as
  may have been in effect  at any time  during  the  90-day  period  immediately
  before) the Effective Date (the "Excess/Supplemental  Plans"), irrespective of
  whether or not  Executive is vested  therein,  and without any  reduction  for
  early retirement,  early payout and social security benefits,  and taking into
  account for benefit accrual purposes,  the Executive's  period of service with
  the Company beginning February 22, 1989. Whichever of the Company and Services
  is not the Employer,  shall be jointly and severally liable for the obligation
  of the Employer under this Section 3.4.

                                ARTICLE IV.
                         TERMINATION OF EMPLOYMENT

      4.1 Disability.

            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's  employment  upon the  Executive's  Disability  (as defined in
      Section  4.1(b)) by giving the Executive or his legal  representative,  as
      applicable,  (1) written  notice in  accordance  with  Section 11.7 of the
      Employer's  intention to terminate the Executive's  employment pursuant to
      this Section and (2) a certification  of the  Executive's  Disability by a
      physician  selected  by  the  Employer  or  its  insurers  and  reasonably
      acceptable to the Executive or the Executive's legal  representative.  The
      Executive's  employment  shall  terminate  effective  on the 30th day (the
      "Disability  Effective Date") after the Executive's receipt of such notice
      unless,  before the Disability  Effective  Date, the Executive  shall have
      resumed the full-time performance of the Executive's duties.

            b. "Disability" means any medically  determinable physical or mental
      impairment  that has lasted for a  continuous  period of not less than six
      months and can be expected to be permanent or of indefinite duration.  and
      that  renders  the  Executive  unable to perform the  essential  functions
      required under this Agreement with or without reasonable accommodation.

      4.2 Death.  The Executive's employment shall  terminate automatically upon
      the Executive's death during the Post-Change Period.

      4.3   Cause.

            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's employment for Cause.

            b.  "Cause"  means  any  of the  following:  (i)  conviction  of the
      Executive of, or the  Executive's  pleading  guilty or nolo contendere to,
      any  felony  which  includes  as an  element  of the crime a  premeditated
      intention  to commit the act,  (ii)  Executive's


                                                                               8
<PAGE>


      inability to perform his duties due to habitual alcohol or drug addiction,
      (iii) serious misconduct involving dishonesty in the course of Executive's
      employment, or (iv) the Executive's habitual neglect of his duties; except
      that Cause shall not mean:

                  (1)   bad  judgment  or  negligence  other than  habitual
                        neglect of duty;

                  (2) any act or  omission  believed  by the  Executive  in good
                  faith to have been in or not  opposed to the  interest  of the
                  Company and Services (without intent of the Executive to gain,
                  directly or  indirectly,  a profit to which the  Executive was
                  not legally entitled);

                  (3) any act or omission with respect to which a  determination
                  could  properly have been made by the Board that the Executive
                  met the applicable  standard of conduct for indemnification or
                  reimbursement  under the Company's or Services'  by-laws,  any
                  applicable  indemnification  agreement,  or applicable law, in
                  each case in effect at the time of such act or omission; or

                  (4) any act or  omission  with  respect  to  which  notice  of
                  termination  of employment of the Executive is given more than
                  12 months after the  earliest  date on which any member of the
                  Board, not a party to the act or omission, knew or should have
                  known of such act or omission.

            c. Any termination of the Executive's employment by the Employer for
      Cause shall be communicated to the Executive by a Notice of Termination.

      4.4   Good Reason.

            a. During the Post-Change Period, the Executive may terminate his or
      her employment for Good Reason.

            b. "Good Reason" means any of the following:

                  (1) the assignment to the Executive of any duties inconsistent
                  in  any  respect  with  the  Executive's  position  (including
                  offices,  titles, reporting requirements or responsibilities),
                  authority or duties as contemplated by Section 3.1 (a)(1),  or
                  any other action by the Company or Services which results in a
                  diminution  on  or  other  material  adverse  change  in  such
                  position, authority or duties;

                  (2) any  failure by the Company or Services to comply with any
                  of the provisions of Article III;

                  (3) the  Company's or Services'  requiring the Executive to be
                  based at any  office  or  location  other  than  the  location
                  described in Section 3.1(a)(2);



                                                                               9
<PAGE>


                  (4)  any  other  material  adverse  change  to the  terms  and
                  conditions of the Executive's employment; or

                  (5)  any  purported   termination   by  the  Employer  of  the
                  Executive's  employment  other than as expressly  permitted by
                  this Agreement (any such  purported  termination  shall not be
                  effective for any other purpose under this Agreement).

      Any  reasonable  determination  of "Good Reason" made in good faith by the
Executive shall be conclusive.

            c. Any  termination  of  employment by the Executive for Good Reason
      shall be  communicated  to the  Employer  by a Notice  of  Termination.  A
      passage of time prior to delivery of a Notice of  Termination or a failure
      by the  Executive  to  include in the  Notice of  Termination  any fact or
      circumstance which contributes to a showing of Good Reason shall not waive
      any right of the Executive  under this Agreement or preclude the Executive
      from asserting such fact or  circumstance  in enforcing  rights under this
      Agreement.

                                ARTICLE V.
               OBLIGATIONS OF THE EMPLOYER UPON TERMINATION

      5.1 If by the Executive for Good Reason or by the Employer  Other Than for
Cause or  Disability.  If, during the  Post-Change  Period,  the Employer  shall
terminate Executive's  employment other than for Cause or Disability,  or if the
Executive  shall  terminate  employment  for Good  Reason,  the  Employer  shall
immediately pay the Executive, in addition to all vested rights arising from the
Executive's  employment  as specified in Article III, a cash amount equal to the
sum of the following amounts:

            a.    to the extent not previously  paid,  the Guaranteed  Base
     Salary and any accrued vacation pay through the Termination Date;

            b. the  difference  between  (1) the  product of (A) the  Guaranteed
     Bonus,  multiplied by (B) a fraction,  the numerator of which is the number
     of days in the  Termination  Performance  Period which  elapsed  before the
     Termination  Date, and the denominator of which is the total number of days
     in the Termination Performance Period, and (2) the amount of any Guaranteed
     Bonus  previously  paid to the  Executive  with respect to the  Termination
     Performance Period;

            c. all amounts  previously  deferred by or an accrual to the benefit
     of the Executive under any  nonqualified  deferred  compensation or pension
     plan,  together with any accrued earnings thereon,  and not yet paid by the
     Company or Services;



                                                                              10
<PAGE>


            d.    an  amount   equal  to  the  product  of  (1)  three  (3)
                  multiplied by (2) the
     sum of (A) the Guaranteed Base Salary and (B) the Guaranteed Bonus;

            e. an amount equal to the sum of the value of the  unvested  portion
     of the  Executive's  accounts or accrued  benefits under any qualified plan
     maintained by the Company or Services, as of the Termination Date;

            f. if the Company or Services  maintains  any  cash-based  long term
     incentive  bonus  plan or  arrangement,  an amount in  satisfaction  of the
     Company's or Services (as  applicable)  obligation to the  Executive  under
     such plan or arrangement  equal to the amount which would be payable to the
     Executive if (i) the Company or Services (as  applicable)  attained  target
     performance over the entire  performance  period and (ii) the Executive had
     remained employed during the entire performance period;

            g. (NOTE:  THIS  SECTION 5.1 (G) IS  APPLICABLE  IF AND ONLY IF YOUR
      PARTICIPATION IN THE SAFETY-KLEEN  SUPPLEMENTAL  EXECUTIVE RETIREMENT PLAN
      IS APPROVED  BY THE HUMAN  RESOURCES  AND  COMPENSATION  COMMITTEE  OF THE
      COMPANY'S  BOARD OF DIRECTORS) the difference  between (1) an amount equal
      to the value (determined  using the actuarial  assumptions then applied by
      the Pension Benefit Guaranty Corporation for determining immediate annuity
      present   values)  of  the   Executive's   accrued   benefits   under  the
      Excess/Supplemental   Plans  (taking  into  account  for  benefit  accrual
      purposes  the  Executive's  period of service  with the Company  beginning
      February 22, 1989)  calculated  as though the  Executive  (A) continued to
      accrue benefits under the Excess/Supplemental  Plans for a period of three
      years after the  Termination  Date, and (B) received  compensation  during
      each year of such  three-year  period  equal to the sum of the  Guaranteed
      Base  Salary and the  highest  Guaranteed  Bonus paid (or  payable) to the
      Executive in the three years preceding the Termination  Date, and (C) were
      three (3) years  older  than his age at the  Termination  Date and (2) the
      amount  actually  previously  paid to  Executive  pursuant to Section 3.4;
      provided however,  that the amount computed under this paragraph shall not
      be  reduced  for  early  retirement,  early  payout  and  social  security
      benefits;  further  provided,  however,  that  such  amount  shall be paid
      irrespective  of  whether  Executive  is  vested  in any  of  the  Excess/
      Supplemental Plans; and

           h. pay Executive outplacement services, to a maximum of $25,000.

      Until the third  anniversary of the Termination Date or such later date as
  any Plan of the Company or Services may specify,  the Employer  shall continue
  to provide to the Executive and the provide to the Executive's  family welfare
  benefits  (including,  without  limitation,  medical,  prescription,   dental,
  disability,  individual life, group life, accidental death and travel accident
  insurance   plans  and  programs),   fringe   benefits  and  other   executive
  perquisites,  which are at least as favorable as the most  favorable  Plans of
  the Company and Services applicable to Executive and other peer executives and
  their  families  as of the  Termination  Date,  but which are in no event less
  favorable than the most favorable Plans of the Company and Services applicable
  to the  Executive  and other peer  executives  and their


                                                                              11
<PAGE>


  families during the 90-day period  immediately  before the Effective Date. The
  cost to the  Executive of such welfare  benefits  shall not exceed the cost of
  such benefits to the Executive  immediately before the Termination Date or, if
  less, the Effective Date.  Notwithstanding the foregoing,  if the Executive is
  covered under any medical, life, or disability insurance plan(s) provided by a
  subsequent  employer,  then the amount of coverage  required to be provided by
  the Employer  hereunder  shall be  secondary  to the coverage  provided by the
  subsequent  employer's  medical,  life, or disability  insurance plan(s).  The
  Executive's rights under this Section shall be in addition to, and not in lieu
  of,  any  post-termination  continuation  coverage  or  conversion  rights the
  Executive may have pursuant to applicable law,  including  without  limitation
  continuation  coverage  required by Section  4980B of the Code and Section 601
  et. seq. of the Employee Retirement Income Security Act of 1974, as amended.

      5.2  If by  the  Employer  for  Cause.  If  the  Employer  terminates  the
  Executive's employment for Cause during the Post-Change Period, this Agreement
  shall terminate  without further  obligation by the Employer to the Executive,
  other  than  the  obligation  immediately  to pay the  Executive  in cash  the
  Executive's  Guaranteed  Base Salary through the  Termination  Date,  plus the
  amount of any  compensation  previously  deferred by the  Executive,  plus any
  accrued vacation pay, in each case to the extent not previously paid.

      5.3 If by the  Executive  Other  Than for Good  Reason.  If the  Executive
  terminates  employment  during  the  Post-Change  Period  other  than for Good
  Reason,  Disability or death,  this Agreement shall terminate  without further
  obligations by the Employer,  other than the obligation immediately to pay the
  Executive  in cash all amounts  specified  in clauses  (a), (b) and (c) of the
  first  sentence  of  Section  5.1 (such  amounts  collectively,  the  "Accrued
  Obligations").

      5.4 If by the Employer for  Disability.  If the  Employer  terminates  the
  Executive's  employment  by reason of the  Executive's  Disability  during the
  Post-Change Period, this Agreement shall terminate without further obligations
  to the Executive, other than

            (a)  the   Employer's   obligation   immediately   to  pay  the
      Executive in cash all Accrued Obligations, and

            (b) the  Executive's  right after the  Disability  Effective Date to
      receive disability and other benefits at least equal to the greater of (1)
      those  provided under the most favorable  disability  Plans  applicable to
      peer  executives of the Company or Services in effect  immediately  before
      the  Termination  Date or (2)  those  provided  under  the most  favorable
      disability  Plans of the Company and Services in effect at any time during
      the 90-day period immediately before the Effective Date.

      5.5 If upon Death. If the  Executive's  employment is terminated by reason
  of the Executive's death during the Post-Change  Period,  this Agreement shall
  terminate without further obligations to the Executive's legal representatives
  under this Agreement, other than the obligation of the Employer immediately to
  pay the  Executive's  estate or beneficiary  in


                                                                              12
<PAGE>


  cash all  Accrued  Obligations.  Despite  anything  in this  Agreement  to the
  contrary,  the  Executive's  family  shall be entitled to receive  benefits at
  least  equal  to the most  favorable  benefits  provided  by the  Company  and
  Services  to the  surviving  families  of peer  executives  of the  Company or
  Services under such Plans,  but in no event shall such Plans provide  benefits
  which  in each  case  are  less  favorable,  in the  aggregate,  than the most
  favorable of those provided by the Company and Services to the Executive under
  such Plans in effect at any time during the 90-day period  immediately  before
  the Effective Date.

      5.6 Joint and Several Obligation. Whichever of the Company and Services is
  not the Employer shall be jointly and severally  liable for the obligations of
  the Employer under this Article V.



                                ARTICLE VI.
                         NON-EXCLUSIVITY OF RIGHTS

      6.1 Waiver of Other Severance Rights. To the extent that payments are made
  to the  Executive  pursuant to Section 5.1, the  Executive  hereby  waives the
  right to receive  severance  payments under any other Plan or agreement of the
  Company or Services.

      6.2 Other  Rights.  Except as  provided  in Section  6.1 and in the second
  paragraph of this  Agreement,  this  Agreement  shall not prevent or limit the
  Executive's  continuing  or  future  participation  in  any  benefit,   bonus,
  incentive or other Plans,  provided by the Company or any of its  Subsidiaries
  and for which the Executive  may qualify,  nor shall this  Agreement  limit or
  otherwise  affect  such  rights  as the  Executive  may have  under  any other
  agreements  with the  Company or any of its  Subsidiaries.  Amounts  which are
  vested benefits or which the Executive is otherwise  entitled to receive under
  any Plan of the Company or any of its  Subsidiaries  and any other  payment or
  benefit  required by law at or after the Termination  Date shall be payable in
  accordance  with such Plan or applicable  law except as expressly  modified by
  this Agreement.

                               ARTICLE VII.
                CERTAIN ADDITIONAL PAYMENTS BY THE EMPLOYER

      7.1 Gross-up for Certain  Taxes.  If it is determined  (by the  reasonable
  computation of the Employer's independent auditors, which determinations shall
  be  certified  to by such  auditors  and set  forth in a  written  certificate
  ("Certificate")  delivered  to the  Executive)  that any  benefit  received or
  deemed received by the Executive from the Company or Services pursuant to this
  Agreement  or  otherwise  (collectively,  the  "Payments")  is or will  become
  subject to any excise tax under  Section  4999 of the Code or any  similar tax
  payable  under any  United  States  federal,  state,  local or other law (such
  excise tax and all such similar taxes collectively,  "Excise Taxes"), then the
  Employer shall,  immediately  after such  determination,  pay the Executive an
  amount (the "Gross-up Payment") equal to the product of



                                                                              13
<PAGE>


            (a) the amount of such Excise Taxes

  multiplied by

            (b) the Gross-up Multiple (as defined in Section 7.4).

      The  Gross-up  Payment is intended to  compensate  the  Executive  for the
  Excise Taxes and any federal,  state, local or other income or excise taxes or
  other taxes payable by the Executive with respect to the Gross-up Payment.

      The Executive or the Employer may at any time request the  preparation and
  delivery to the Executive of a Certificate. The Employer shall, in addition to
  complying with Section 7.2, cause all determinations and certifications  under
  the Article to be made as soon as reasonably  possible and in adequate time to
  permit  the  Executive  to prepare  and file the  Executive's  individual  tax
  returns on a timely basis.

      7.2  Determination by the Executive.

            a. If the  Employer  shall  fail to  deliver  a  Certificate  to the
      Executive (and to pay to the Executive the amount of the Gross-up Payment,
      if any)  within 14 days  after  receipt  from the  Executive  of a written
      request  for a  Certificate,  or if at any  time  following  receipt  of a
      Certificate the Executive  disputes the amount of the Gross-up Payment set
      forth therein, the Executive may elect to demand the payment of the amount
      which the  Executive,  in  accordance  with an  opinion  of counsel to the
      Executive  ("Executive  Counsel  Opinion"),  determines to be the Gross-up
      Payment. Any such demand by the Executive shall be made by delivery to the
      Employer  of  a  written  notice  which  specifies  the  Gross-up  Payment
      determined  by the Executive and an Executive  Counsel  Opinion  regarding
      such Gross-up Payment (such written notice and opinion  collectively,  the
      "Executive's  Determination").  Within  14  days  after  delivery  of  the
      Executive's  Determination to the Employer, the Employer shall either (1 )
      pay the  Executive  the  Gross-up  Payment  set  forth in the  Executive's
      Determination (less the portion of such amount, if any, previously paid to
      the  Executive  by  the  Employer)  or (2)  deliver  to  the  Executive  a
      Certificate  specifying the Gross-up Payment  determined by the Employer's
      independent  auditors,  together with an opinion of the Employer's counsel
      (" Employer Counsel Opinion"),  and pay the Executive the Gross-up Payment
      specified in such  Certificate.  If for any reason the  Employer  fails to
      comply with clause (2) of the  preceding  sentence,  the Gross-up  Payment
      specified in the  Executive's  Determination  shall be controlling for all
      purposes.

            b. If the  Executive  does not make a request  for, and the Employer
      does not deliver to the Executive, a Certificate,  the Employer shall, for
      purposes  of Section  7.3, be deemed to have  determined  that no Gross-up
      Payment is due.



                                                                              14
<PAGE>


      7.3 Additional Gross-up Amounts. If, despite the initial conclusion of the
Employer  and/or the  Executive  that certain  Payments  are neither  subject to
Excise Taxes nor to be counted in determining whether other Payments are subject
to Excise Taxes (any such item, a "Non-Parachute  Item"), it is later determined
(pursuant to the subsequently-enacted  provisions of the Code, final regulations
or  published  rulings  of the  IRS,  final  judgment  of a court  of  competent
jurisdiction   or  the  Employer's   independent   auditors)  that  any  of  the
Non-Parachute  Items  are  subject  to Excise  Taxes,  or are to be  counted  in
determining  whether any Payments are subject to Excise  Taxes,  with the result
that the amount of Excise  Taxes  payable by the  Executive  is greater than the
amount  determined by the Employer or the  Executive  pursuant to Section 7.1 or
7.2, as  applicable,  then the Employer shall pay the Executive an amount (which
shall also be deemed a Gross-up Payment) equal to the product of


            (a)  the  sum of (1)  such  additional  Excise  Taxes  and  (2)  any
        interest,  fines,  penalties,  expenses or other  costs  incurred by the
        Executive  as a result of having taken a position in  accordance  with a
        determination made pursuant to Section 7.1

  multiplied by

              (b) the Gross-up Multiple.

      7.4 Gross-up Multiple.  The Gross-up Multiple shall equal a fraction,  the
numerator of which is one (1.0), and the denominator of which is one (1.0) minus
the sum,  expressed as a decimal fraction,  of the rates of all federal,  state,
local and other  income and other taxes and any Excise Taxes  applicable  to the
Gross-up Payment.  (If different rates of tax are applicable to various portions
of a Gross-up Payment, the weighted average of such rates shall be used.)

     7.5 Opinion of Counsel.  "Executive  Counsel Opinion" means a legal opinion
of  nationally  recognized  executive  compensation  counsel  that  there  is  a
reasonable basis to support a conclusion that the Gross-up Payment determined by
the  Executive has been  calculated  in accord with this Article and  applicable
law. " Employer Counsel Opinion" means a legal opinion of nationally  recognized
executive compensation counsel that (a) there is a reasonable basis to support a
conclusion that the Gross-up  Payment set forth of the Certificate of Employer's
independent  auditors  has been  calculated  in  accord  with this  Article  and
applicable law, and (b) there is no reasonable  basis for the calculation of the
Gross-up Payment determined by the Executive.

     7.6 Amount Increased or Contested.  The Executive shall notify the Employer
in  writing  of any  claim  by the  IRS  or  other  taxing  authority  that,  if
successful,  would  require the payment by the  Employer of a Gross-up  Payment.
Such  notice  shall  include the nature of such claim and the date on which such
claim is due to be  paid.  The  Executive  shall  give  such  notice  as soon as
practicable,  but no later than 10  business  days,  after the  Executive  first
obtains actual knowledge of such claim;  provided,  however, that any failure to
give or delay in giving  such notice  shall  affect the  Employer's  obligations
under this Article only if and to the extent that such failure results in actual
prejudice to the Employer.  The Executive  shall


                                                                              15
<PAGE>

not pay such claim less than 30 days after the  Executive  gives such  notice to
the Employer (or, if sooner, the date on which payment of such claim is due). If
the Employer  notifies the  Executive in writing  before the  expiration of such
period that it desires to contest such claim, the Executive shall:

            a.    give the  Employer  any  information  that it  reasonably
      requests relating to such claim,

            b. take such action in connection  with contesting such claim as the
      Employer  reasonably  requests  in writing  from time to time,  including,
      without  limitation,  accepting legal  representation with respect to such
      claim by an attorney reasonably selected by the Employer,

            c.    cooperate  with the  Employer  in good faith to  contest  such
                  claim, and

            d.    permit the  Employer to  participate  in any  proceedings
      relating to such claim;

      provided, however, that the Employer shall bear and pay directly all costs
      and expenses  (including  additional  interest and penalties)  incurred in
      connection  with such contest and shall  indemnify  and hold the Executive
      harmless,  on an  after-tax  basis,  for any  Excise  Tax or  income  tax,
      including  related  interest  and  penalties,  imposed as a result of such
      representation  and payment of costs and  expenses.  Without  limiting the
      foregoing,  the Employer shall control all  proceedings in connection with
      such  contest  and, at its sole  option,  may pursue or forego any and all
      administrative  appeals,  proceedings,  hearings and conferences  with the
      taxing  authority  in respect of such claim and may,  at its sole  option,
      either direct the Executive to pay the tax claimed and sue for a refund or
      contest  the claim in any  permissible  manner.  The  Executive  agrees to
      prosecute  such  contest  to a  determination  before  any  administrative
      tribunal,  in a court of initial jurisdiction and in one or more appellate
      courts, as the Employer shall determine;  provided,  however,  that if the
      Employer directs the Executive to pay such claim and sue for a refund, the
      Employer shall advance the amount of such payment to the Executive,  on an
      interest-free  basis and shall  indemnify the  Executive,  on an after-tax
      basis,  for any Excise Tax or income tax,  including  related  interest or
      penalties, imposed with respect to such advance; and further provided that
      any extension of the statute of  limitations  relating to payment of taxes
      for the taxable year of the Executive with respect to which such contested
      amount is claimed to be due is limited  solely to such  contested  amount.
      The  Employer's  control of the  contest  shall be limited to issues  with
      respect to which a Gross-up Payment would be payable.  The Executive shall
      be  entitled  to settle or  contest,  as the case may be, any other  issue
      raised by the IRS or other taxing authority.

      7.7 Refunds.  If, after the receipt by the Executive of an amount advanced
by the  Employer  pursuant to Section  7.6, the  Executive  becomes  entitled to
receive any refund  with


                                                                              16
<PAGE>



respect to such claim, the Executive shall (subject to the Employer's  complying
with the  requirements  of Section 7.6)  promptly pay the Employer the amount of
such refund  (together  with any interest  paid or credited  thereon after taxes
applicable  thereto).  If,  after  the  receipt  by the  Executive  of an amount
advanced by the Employer  pursuant to Section 7.6, a determination  is made that
the Executive shall not be entitled to any refund with respect to such claim and
the Employer  does not notify the  Executive in writing of its intent to contest
such  determination  before the expiration of 30 days after such  determination,
then such  advance  shall be forgiven and shall not be required to be repaid and
the amount of such advance shall offset,  to the extent  thereof,  the amount of
Gross-up Payment required to be paid. Any contest of a denial of refund shall be
controlled by Section 7.6.

      7.8 Joint and Several Obligation. Whichever of the Company and Services is
not the Employer  shall be jointly and severally  liable for the  obligations of
the Employer  under this Article VII. In the event of any assertion of liability
under this  Section 7.8 against  whichever of the Company or Services is not the
Employer,  the party against which such  liability is asserted  shall succeed to
all of the rights and obligations of the Employer under Article VII.

                               ARTICLE VIII.
                           EXPENSES AND INTEREST

      8.1  Legal Fees and Other Expenses.

            a. If the Executive incurs legal, accounting and other fees or other
      expenses in a good faith effort to obtain  benefits  under this  Agreement
      (including,  without  limitation,  the  fees  and  other  expenses  of the
      Executive's  legal counsel and the  accounting and other fees and expenses
      in  connection  with the  delivery of the  Opinion  referred to in Article
      VII),  regardless  of  whether  the  Executive  ultimately  prevails,  the
      Employer shall reimburse the Executive on a monthly basis upon the written
      request for such fees and expenses to the extent not reimbursed  under the
      Company's and Services' officers and directors liability insurance policy,
      if any. The existence of any  controlling  case or controlling  regulatory
      law  which  is  directly  inconsistent  with  the  position  taken  by the
      Executive shall be evidence that the Executive did not act in good faith.

            b.  Reimbursement  of legal fees and expenses  shall be made monthly
      upon the written  submission of a request for reimbursement  together with
      evidence  that such fees and  expenses are due and payable or were paid by
      the  Executive.  If the Employer  shall have  reimbursed the Executive for
      legal fees and expenses and it is later  determined that the Executive was
      not acting in good faith, all amounts paid on behalf of, or reimbursed to,
      the Executive shall be promptly refunded to the Employer.

      8.2 Interest. If the Employer does not pay any amount due to the Executive
under this  Agreement  within three days after such amount became due and owing,
interest shall


                                                                              17
<PAGE>


accrue on such  amount  from the date it became due and owing  until the date of
payment at a annual rate equal to two percent  (2.0%) above the base  commercial
lending rate announced by The Bank of America in effect from time to time during
the period of such nonpayment.

      8.3 Joint and Several Obligation. Whichever of the Company and Services is
not the Employer  shall be jointly and severally  liable for the  obligations of
the Employer  under this Article  VIII.  The right of refund  referred to in the
last  sentence  of Section  8.1 b. shall  inure to  whichever  of the Company or
Services originally paid the reimbursement to the Executive.

                                ARTICLE IX.
                         NO SET-OFF OR MITIGATION

      9.1 No Set-off by Company or Services.  The  Executive's  right to receive
when due the payments and other  benefits  provided for under this  Agreement is
absolute,  unconditional  and  subject to no set-off,  counterclaim  or legal or
equitable defense.  Time is of the essence in the performance by the Company and
Services of their obligations under this Agreement.  Any claim which the Company
or  Services  may have  against  the  Executive,  whether  for a breach  of this
Agreement or otherwise,  shall be brought in a separate action or proceeding and
not as part of any action or proceeding  brought by the Executive to enforce any
rights against the Company or Services under this Agreement.

      9.2 No Mitigation.  The Executive  shall not have any duty to mitigate the
amounts  payable by the Company or Services  under this Agreement by seeking new
employment following  termination.  Except as specifically otherwise provided in
this  Agreement,  all amounts  payable  pursuant to this Agreement shall be paid
without  reduction  regardless of any amounts of salary,  compensation  or other
amounts  which may be paid or  payable  to the  Executive  as the  result of the
Executive's employment by another employer.

                                ARTICLE X.
                    CONFIDENTIALITY AND NON-COMPETITION

      10.1 Confidentiality.  Executive acknowledges that it is the policy of the
Company and its Subsidiaries to maintain as secret and confidential all valuable
and unique information and techniques acquired, developed or used by the Company
and its  Subsidiaries  relating to their  business,  operations,  employees  and
customers,  which gives the Company and its Subsidiaries a competitive advantage
in the  businesses  in  which  the  Company  and its  Subsidiaries  are  engaged
("Confidential  Information").  Executive  recognizes that all such Confidential
Information  is  the  sole  and  exclusive  property  of  the  Company  and  its
Subsidiaries, and that disclosure of Confidential Information would cause damage
to the Company and its  Subsidiaries.  Executive agrees that, except as required
by the duties of his  employment  with the Company and/or its  Subsidiaries  and
except in connection with enforcing the Executive's  rights under this Agreement
or if  compelled by a court or  governmental  agency,  he will not,  without the
consent of the  Company,  disseminate  or



                                                                              18
<PAGE>



otherwise disclose any Confidential  Information  obtained during his employment
with the Company  and/or its  Subsidiaries  for so long as such  information  is
valuable and unique.

      10.2     Non-competition/ Non-solicitation.

            a. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  will not at any time directly or  indirectly,  in any capacity,
      engage or  participate  in, or become  employed  by or render  advisory or
      consulting or other services in connection with any Prohibited Business as
      defined in Section 10.2(d).

            b. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive shall not make any financial investment,  whether in the form of
      equity  or debt,  or own any  interest,  directly  or  indirectly,  in any
      Prohibited  Business.  Nothing in this  Section  10.2(b)  shall,  however,
      restrict  Executive  from making any investment in any company whose stock
      is listed on a national  securities  exchange  or  actively  traded in the
      over-the-counter  market;  provided that (1) such investment does not give
      Executive  the  right or  ability  to  control  or  influence  the  policy
      decisions of any Prohibited  Business,  and (2) such  investment  does not
      create a conflict of interest  between  Executive's  duties  hereunder and
      Executive's interest in such investment.

            c. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  shall not (1) employ any  employee  of the  Company  and/or its
      Subsidiaries   or  (2)  interfere   with  the  Company's  or  any  of  its
      Subsidiaries'  relationship  with,  or  endeavor  to entice  away from the
      Company and/or its Subsidiaries any person,  firm,  corporation,  or other
      business  organization  who or which at any time (whether  before or after
      the date of  Executive's  termination  of  employment),  was an  employee,
      customer,  vendor or supplier of, or  maintained  a business  relationship
      with,  any  business  of the  Company  and/or its  Subsidiaries  which was
      conducted at any time during the period  commencing  one year prior to the
      termination of employment.

            d. For the purpose of this Section 10.2, "Prohibited Business" shall
      be  defined as any entity and any  branch,  office or  operation  thereof,
      which is a direct  and  material  competitor  of the  Company  and/ or its
      Subsidiaries  wherever the Company and/ or its Subsidiaries does business,
      in the United States or abroad.

      10.3 Remedy.  Executive  and the Company  specifically  agree that, in the
event that  Executive  shall  breach his  obligations  under this Article X, the
Company  and its  Subsidiaries  will suffer  irreparable  injury and no adequate
remedy for such breach, and shall be entitled to injunctive relief therefor, and
in particular,  without  limiting the  generality of the foregoing,



                                                                              19
<PAGE>


the Company  shall not be  precluded  from  pursuing any and all remedies it may
have at law or in equity for breach of such obligations; provided, however, that
such  breach  shall  not in any  manner or degree  whatsoever  limit,  reduce or
otherwise  affect  the  obligations  of the  Company  and  Services  under  this
Agreement,  and  in no  event  shall  an  asserted  breach  of  the  Executive's
obligations under this Article X constitute a basis for deferring or withholding
any amounts otherwise payable to the Executive under this Agreement.

                                ARTICLE XI.
                               MISCELLANEOUS

      11.1  No Assignability.  This  Agreement is personal to the  Executive and
without  the prior  written  consent of the Company  and  Services  shall not be
assignable  by the Executive  otherwise  than by will or the laws of descent and
distribution. This Agreement shall inure to the benefit of and be enforceable by
the Executive's legal representatives.

      11.2  Successors.  This  Agreement  shall  inure to the  benefit of and be
binding upon the Company,  Services and their respective successors and assigns.
The Company and Services will require any successor (whether direct or indirect,
by purchase, merger,  consolidation or otherwise) to all or substantially all of
their  respective  businesses or assets to assume expressly and agree to perform
this  Agreement  in the same  manner and to the same  extent that the Company or
Services,  as applicable,  would be required to perform it if no such succession
had taken place.  Any successor to the business  and/or assets of the Company or
Services  which assumes or agrees to perform this Agreement by operation of law,
contract,  or otherwise  shall be jointly and severally  liable with the Company
and  Services  under this  Agreement  as if such  successor  were the Company or
Services, as applicable.

      11.3  Payments to  Beneficiary.  If the  Executive  dies before  receiving
amounts to which the Executive is entitled  under this  Agreement,  such amounts
shall be paid in a lump sum to the  beneficiary  designated  in  writing  by the
Executive, or if none is so designated, to the Executive's estate.

      11.4  Non-alienation  of Benefits.  Benefits  payable under this Agreement
shall not be subject in any manner to anticipation,  alienation, sale, transfer,
assignment, pledge, encumbrance,  charge, garnishment,  execution or levy of any
kind,  either  voluntary or  involuntary,  before actually being received by the
Executive,  and any such  attempt to dispose  of any right to  benefits  payable
under this Agreement shall be void.

      11.5 Severability. If any one or more articles, sections or other portions
of this  Agreement  are  declared by any court or  governmental  authority to be
unlawful  or  invalid,  such  unlawfulness  or  invalidity  shall  not  serve to
invalidate any article,  section or other portion not so declared to be unlawful
or invalid. Any article,  section or other portion so declared to be unlawful or
invalid  shall be  construed  so as to  effectuate  the  terms of such  article,
section or other portion to the fullest extent possible while  remaining  lawful
and valid.



                                                                              20
<PAGE>


      11.6 Amendments. Except as provided in Sections 2.2 and 11.14 hereof, this
Agreement shall not be altered, amended or modified except by written instrument
executed by the Company, Services and Executive.

      11.7 Notices.  All notices and other  communications  under this Agreement
shall be in  writing  and  delivered  by hand or by first  class  registered  or
certified mail, return receipt requested, postage prepaid, addressed as follows:

                        If to the Executive:
                        (First Name)(Last Name)
                        (address)
                        (City)(State) (Postal Code)

                        If to the Company:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration



                                                                              21
<PAGE>


                        If to Services:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration

  or to such other address as either party shall have  furnished to the other in
  writing.  Notice and communications  shall be effective when actually received
  by the addressee.

        11.8  Counterparts.  This  Agreement  may be  executed  in  one or  more
  counterparts,  each of which  shall be  deemed an  original,  but all of which
  together constitute one and the same instrument.

       11.9 Governing Law. This Agreement  shall be interpreted and construed in
accordance  with the laws of the State of South  Carolina  without regard to its
choice of law principles.

       11.10  Captions.  The  captions of this  Agreement  are not a part of the
provisions hereof and shall have no force or effect.

       11.11 Tax  Withholding.  The Company and Services  may withhold  from any
amounts payable under this Agreement any federal,  state or local taxes that are
required to be withheld pursuant to any applicable law or regulation.

       11.12 No Waiver. The Executive's failure to insist upon strict compliance
with any  provision  of this  Agreement  shall  not be  deemed a waiver  of such
provision or any other provision of this Agreement. A waiver of any provision of
this  Agreement  shall not be deemed a waiver  of any other  provision,  and any
waiver of any default in any such provision  shall not be deemed a waiver of any
later default thereof or of any other provision.

      11.13 Entire Agreement.  This Agreement contains the entire  understanding
of the  Company  and  Services  and the  Executive  with  respect to its subject
matter.

      11.14  Cancellation.  The Company and Services may, at any time prior to a
Change in Control,  unilaterally  cancel this Agreement on behalf of all parties
hereto by both of them (and not only one of them)  notifying  the  Executive  of
such  cancellation in writing at least twelve (12) months prior to the effective
date of the  cancellation,  provided  however  that no such  notice may be given
after an Imminent Change of Control Date.



                                                                              22
<PAGE>











            IN WITNESS  WHEREOF,  the  Executive,  Services and the Company have
executed this Agreement as of the date first above written.




                       --------------------------------------
                       (FirstName) (LastName) (the Executive)

                        SAFETY-KLEEN CORP.

                        By:-------------------------------
                        Kenneth W. Winger
                        President & Chief Executive Officer

                        SAFETY-KLEEN SERVICES, INC.

                        By:-------------------------------
                        Kenneth W. Winger
                        President





                                                                              23


                                  SAFETY-KLEEN
                      CHANGE OF CONTROL SEVERANCE AGREEMENT
                                     (name)


<PAGE>


                                TABLE OF CONTENTS
                                                                          Page
ARTICLE I. - PURPOSES                                                      1

ARTICLE II. - CERTAIN DEFINITIONS                                          1
      2.1   Accrued Obligations                                            1
      2.2   Agreement Term                                                 1
      2.3   Article                                                        2
      2.4   Beneficial owner                                               2
      2.5   Cause                                                          2
      2.6   Change of Control                                              2
      2.7   Code                                                           2
      2.8   Disability                                                     2
      2.9   Effective Date                                                 2
      2.10  Good Reason                                                    3
      2.11  Gross-up Payment                                               3
      2.12  Imminent Change of Control Date                                3
      2.13  IRS                                                            3
      2.14  1934 Act                                                       3
      2.15  Notice of Termination                                          3
      2.16  Plans                                                          3
      2.17  Policies                                                       3
      2.18  Post-Change Period                                             3
      2.19  SEC                                                            3
      2.20  Section                                                        3
      2.21  Subsidiary                                                     3
      2.22  Termination Date                                               4
      2.23  Termination Performance Period                                 4
      2.24  Voting Securities                                              4

ARTICLE III. - POST-CHANGE PERIOD PROTECTIONS                              4
      3.1  Position and Duties                                             4
      3.2  Compensation                                                    5
      3.3  Stock Options                                                   7
      3.4  Excess / Supplemental Plans                                     7

ARTICLE IV. - TERMINATION OF EMPLOYMENT                                    8
      4.1  Disability                                                      8
      4.2  Death                                                           8
      4.3  Cause                                                           8
      4.4  Good Reason                                                     9

ARTICLE V. - OBLIGATIONS OF THE COMPANY UPON TERMINATION                  10
      5.1  If by the Executive for Good Reason or by the Company
           Other Than for
<PAGE>

             Cause or Disability                                          10
      5.2  If by the Company for Cause                                    12
      5.3  If by the Executive Other Than for Good Reason                 12
      5.4  If by the Company for Disability                               12
      5.5  If upon Death                                                  12
      5.6  Joint and Several Obligation                                   12

ARTICLE VI. - NON-EXCLUSIVITY OF RIGHTS                                   13
      6.1  Waiver of Other Severance Rights                               13
      6.2  Other- Rights                                                  13

ARTICLE VII. - CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY                 13
      7.1  Gross-up for Certain Taxes                                     13
      7.2  Determination by the Executive                                 13
      7.3  Additional Gross-up Amounts                                    14
      7.4  Gross-up Multiple                                              15
      7.5  Opinion of Counsel                                             15
      7.6  Amount Increased or Contested                                  15
      7.7  Refunds                                                        16
      7.8  Joint and Several Obligation                                   16

ARTICLE VIII. - EXPENSES AND INTEREST                                     17
      8.1  Legal Fees and Other Expenses                                  17
      8.2  Interest                                                       17

ARTICLE IX. - NO SET-OFF OR MITIGATION                                    17
      9.1  No Set-off by Company                                          17
      9.2  No Mitigation                                                  18

ARTICLE X. - CONFIDENTIALITY AND NON-COMPETITION                          18
      10.1  Confidentiality                                               18
      10.2  Non-competition/ Non-Solicitation                             18
      10.3  Remedy                                                        19

ARTICLE XI. - MISCELLANEOUS                                               19
      11.1  No Assignability                                              19
      11.2  Successors                                                    19
      11.3  Payments to Beneficiary                                       19
      11.4  Non-alienation of Benefits                                    20
      11.5  Severability                                                  20
      11.6  Amendments                                                    20
      11.7  Notices                                                       20
      11.8. Counterparts                                                  21
      11.9  Governing Law                                                 21
      11.10 Captions                                                      21

<PAGE>

      11.11 Tax Withholding                                               21
      11.12 No Waiver                                                     21
      11.13 Entire Agreement                                              21
      11.14 Cancellation                                                  21


<PAGE>


                                  SAFETY-KLEEN.

                      CHANGE OF CONTROL SEVERANCE AGREEMENT


      THIS  AGREEMENT  dated as of October 6, 1999,  is made among SAFETY- KLEEN
CORP.,  a  Delaware  corporation  having  its  principal  place of  business  in
Columbia,  South  Carolina  (the  "Company"),  SAFETY-KLEEN  SERVICES,  INC.,  a
Delaware  corporation having its principal place of business in Columbia,  South
Carolina and a wholly owned  subsidiary of the Company  ("Services")  and (name)
(the "Executive"), a resident of SC.

      The  Company,  Services  and  the  Executive  agree  that  this  agreement
supersedes any prior agreement between any of them which  specifically  provides
benefits upon a change in control of the Company or Services,  and further agree
that, if benefits become payable to the Executive  pursuant to Article V hereof,
such benefits will be in lieu of any other severance or termination  benefits to
which the Executive  otherwise  would be entitled  under any other  severance or
termination plan, policy or arrangement of the Company or Services.

                                   ARTICLE I.
                                   PURPOSES

     The  Board of  Directors  of the  Company  (the  "Board")  and the Board of
Directors of Services have  determined  that it is in the best  interests of the
Company and its  stockholders,  and of Services,  to assure that the Company and
Services  will  have  the  continued  service  of  the  Executive,  despite  the
possibility or occurrence of a change of control of the Company or Services. The
Board believes it is imperative to reduce the  distraction of the Executive that
would result from the personal  uncertainties  caused by a pending or threatened
change of control, to encourage the Executive's full attention and dedication to
the Company and Services,  and to provide the Executive  with  compensation  and
benefits   arrangements   upon  a  change  of  control  which  ensure  that  the
expectations of the Executive will be satisfied and are  competitive  with those
of  similarly-situated  corporations.  This  Agreement is intended to accomplish
these objectives.

                                   ARTICLE II.
                               CERTAIN DEFINITIONS

     When used in this  Agreement,  the terms  specified  below  shall  have the
following meanings:

      2.1 "Accrued Obligations" -- see Section 5.3.

      2.2  "Agreement  Term"  means the  period  commencing  on the date of this
Agreement and ending on the date which is twelve (12) months  following the date
that both

                                                                               1
<PAGE>


the  Company and  Services  give  notice of  cancellation  pursuant to
Section 11.14 hereof (the  "Expiration  Date");  provided,  however,  that if an
Imminent  Change of Control Date occurs  before the  Expiration  Date,  then the
Agreement Term shall automatically  extend to a date which is twelve (12) months
after the date of the Imminent  Change of Control  Date:  and provided  further,
that if a Change of Control  occurs before the  Expiration  Date, the Expiration
Date shall automatically be extended to the last day of the Post-Change Period.

      2.3 "Article" means an article of this Agreement.

      2.4 "Beneficial owner" means such term as defined in Rule 13d-3 of the SEC
under the 1934 Act.

      2.5 "Cause" - see Section 4.3(b).

      2.6 "Change of Control" means,  except as otherwise  provided  below,  the
occurrence of any of the following:

            a. (X) any person (as such term is used in Rule  13(d)- 5 of the SEC
      under the 1934 Act) or group (as such term is defined in Section  13(d) of
      the 1934 Act),  other than a Subsidiary  or any employee  benefit plan (or
      related  trust) of the Company or a  Subsidiary,  becomes  the  beneficial
      owner of 15% or more of the  common  stock  of the  Company  or of  Voting
      Securities  representing  15% or more of the combined  voting power of all
      Voting  Securities  of the  Company,  (Y)  Laidlaw  Inc.  ceases to be the
      beneficial owner,  directly or indirectly,  of 43.6% or more of the Voting
      Securities  of the  Company and (Z)  another  person or group  becomes the
      beneficial  owner of Voting  Securities of the Company  which  represent a
      larger number of Voting Securities than those held by Laidlaw Inc.
            b. within a period of 24 months or less, the individuals  who, as of
      any date,  constitute the Board (the "Incumbent  Directors") cease for any
      reason to constitute at least a majority of the Board unless at the end of
      such period,  the majority of individuals then constituting the Board were
      nominated  upon  the   recommendation  of  a  majority  of  the  Incumbent
      Directors.
            c. the sale or other  disposition of all or substantially all of the
      assets of the Company or Services.
            d. the sale or other  disposition  by the  Company of 50% or more of
      the Voting  Securities of Services or any other  transaction which results
      in any person,  other than the  Company or a  subsidiary  or any  employee
      benefit plan of the Company,  becoming the beneficial owner of 50% or more
      of the Voting Securities of Services.

      2.7 "Code" means the Internal Revenue Code of 1986, as amended.

      2.8 "Disability" -- see Section 4.1(b).

                                                                               2
<PAGE>

      2.9  "Effective  Date"  means the first  date on which a Change of Control
occurs  during the Agreement  Term.  Despite  anything in this  Agreement to the
contrary,  if the  Company or Services  terminates  the  Executive's  employment
before  the  date  of a  Change  of  Control,  and if the  Executive  reasonably
demonstrates  that such  termination  of employment  (a) was at the request of a
third party who had taken steps  reasonably  calculated  to effect the Change of
Control or (b) otherwise  arose in connection with or anticipation of the Change
of Control,  then "Effective  Date" shall mean the date  immediately  before the
date of such termination of employment.

      2.10 "Employer"  means whichever of the Company or Services is the primary
common-law employer of the Executive at the relevant time.

      2.11 "Good Reason" -- see Section 4.4(b).

      2.12 "Gross-up Payment" -- see Section 7.1.

      2.13 "Imminent  Change of Control Date" means any date on which occurs (a)
a presentation to the Company's  stockholders  generally or any of the Company's
directors or executive  officers of a proposal or offer for a Change of Control,
or (b) the public announcement (whether by advertisement,  press release,  press
interview, public statement, SEC filing or otherwise) of a proposal or offer for
a Change of  Control,  and in case of either (a) or (b) such  proposal  or offer
remains effective and unrevoked.

      2.14 "IRS" means the Internal Revenue Service.

      2.15  "1934 Act" means the Securities Exchange Act of 1934.

      2.16 "Notice of  Termination"  means a written  notice given in accordance
with  Section 11.7 which sets forth (a) the  specific  termination  provision in
this  Agreement  relied upon by the party giving such notice,  (b) in reasonable
detail the facts and circumstances claimed to provide a basis for termination of
the  Executive's  employment  under such  termination  provision  and (c) if the
Termination  Date  is  other  than  the  date  of  receipt  of  such  Notice  of
Termination, the Termination Date.

      2.17 "Plans" means plans,  programs,  policies or practices of the Company
and Services.

      2.18 "Policies" means policies, practices or procedures of the Company and
Services.

      2.19  "Post-Change  Period"  means the period  commencing on the Effective
Date and ending on the third anniversary of such date.

      2.20 "SEC" means the Securities and Exchange Commission.


                                                                               3
<PAGE>

      2.21 "Section" means, unless the context otherwise requires,  a section of
this Agreement.

      2.22 "Subsidiary"  means a corporation as defined in Section 424(f) of the
Code with the Company being treated as the employer  corporation for purposes of
this definition.

      2.23  "Termination  Date"  means  the date of  receipt  of the  Notice  of
Termination  or any later date specified in such notice (which date shall be not
more  than 15 days  after  the  giving  of such  notice),  as the  case  may be;
provided,   however,  that  (a)  if  the  Company  or  Services  terminates  the
Executive's employment other than for Cause or Disability,  then the Termination
Date shall be the date of receipt of such Notice of  Termination  and (b) if the
Executive's employment is terminated by reason of death or Disability,  then the
Termination  Date shall be the date of death of the Executive or the "Disability
Effective Date" (as defined in Section 4.1), as the case may be.

      2.24 "Termination Performance Period" - see Section 3.2(b)(2).

      2.25  "Voting  Securities"  of a  corporation  means  securities  of  such
corporation  that are entitled to vote generally in the election of directors of
such corporation.

                                  ARTICLE III.
                         POST-CHANGE PERIOD PROTECTIONS

      3.1 Position and Duties.

            a. During the Post-Change Period, (1) the Executive's  position with
      the Company and  Services,  (in the case of a Change of Control  involving
      the  Company)  or with  Services  (in  the  case of a  Change  of  Control
      involving Services) (including offices, titles, reporting requirements and
      responsibilities),  authority and duties shall be at least commensurate in
      all material  respects with the most significant of those held,  exercised
      and assigned at any time during the 90-day period  immediately  before the
      Effective Date and (2) the Executive's  services shall be performed at the
      location where the Executive was employed immediately before the Effective
      Date or any other location less than 40 miles from such former location.

            b.  During  the  Post-Change  Period  (other  than  any  periods  of
      vacation,  sick leave or  disability  to which the Executive is entitled),
      the Executive  agrees to devote the Executive's full attention and time to
      the business  and affairs of the Company and  Services  and, to the extent
      necessary to discharge the duties  assigned to the Executive in accordance
      with this  Agreement,  to use the  Executive's  best  efforts  to  perform
      faithfully and efficiently such duties. During the Post-Change Period, the
      Executive  may (1)  serve on  corporate,  civic or  charitable  boards  or
      committees, (2) deliver lectures, fulfill speaking engagements or teach at
      educational  institutions and (3) manage personal investments,  so long as
      such  activities  are  consistent  with the  Policies  of the  Company  or
      Services at the Effective Date and do not significantly


                                                                               4
<PAGE>

      interfere  with the  performance  of the  Executive's  duties  under  this
      Agreement.  To the extent that any such  activities have been conducted by
      the  Executive  before the  Effective  Date and were  consistent  with the
      Policies of the Company and Services at the Effective  Date, the continued
      conduct of such  activities  (or  activities  similar in nature and scope)
      after  the  Effective  Date  shall not be  deemed  to  interfere  with the
      performance of the Executive's duties under this Agreement.

      3.2   Compensation.

            a. Base  Salary.  During the  Post-Change  Period,  the  Company and
      Services  shall pay or cause to be paid to the  Executive  an annual  base
      salary in cash ("Guaranteed Base Salary"), which shall be paid in a manner
      consistent   with  the  Company's  or  Services'  (as  applicable  to  the
      Executive)  payroll practices in effect  immediately  before the Effective
      Date at a rate at least equal to 12 times the highest  monthly base salary
      paid or payable to the Executive by the Company and Services in respect of
      the 12-month  period  immediately  before the Effective  Date.  During the
      Post-Change  Period, the Guaranteed Base Salary shall be reviewed at least
      annually and shall be increased at any time and from time to time as shall
      be substantially consistent with increases in base salary awarded to other
      peer  executives of the Company and  Services.  Any increase in Guaranteed
      Base Salary shall not limit or reduce any other  obligation of the Company
      and  Services  to the  Executive  under  this  Agreement.  After  any such
      increase,  the  Guaranteed  Base Salary  shall not be reduced and the term
      "Guaranteed Base Salary" shall thereafter refer to the increased amount.

            b. Target  Bonus.  During the  Post-Change  Period,  the Company and
      Services  shall  pay or cause  to be paid to the  Executive  a bonus  (the
      "Guaranteed  Bonus")  for each  Performance  Period  which ends during the
      Post-Change  Period.  "Performance  Period"  means  each  period  of  time
      designated  in  accordance  with any bonus  arrangement  of the Company or
      Services  ("Bonus Plan") which is based upon  performance  and approved by
      the Board or any committee of the Board.  The Guaranteed Bonus shall be at
      least equal to the greatest of:

            (1)   the On Plan  Bonus,  which shall mean the cash bonus which the
                  Executive   would   accrue   under  any  Bonus  Plan  for  the
                  Performance  Period for which the Guaranteed  Bonus is awarded
                  ("Current  Performance Period") as if the performance achieved
                  100% of plan  established  pursuant to such Bonus Plan and the
                  maximum level of the discretionary portion is achieved;

            (2)   the  Actual  Bonus,  which  shall  mean the cash  bonus  which
                  Executive  would  accrue  under any Bonus Plan for the Current
                  Performance  Period  if the  performance  during  the  Current
                  Performance  Period  were  measured  by  actual   performance;
                  provided,  however,  that for  purposes  of  Article V of this
                  Agreement,  the  Actual  Bonus for the  Performance  Period in
                  which  the   Termination   Date  occurred  (the   "Termination



                                                                               5
<PAGE>

                  Performance  Period")  shall not be less  than the cash  bonus
                  which the  Executive  would  accrue  under  any Bonus  Plan if
                  performance  during that Termination  Performance  Period were
                  measured  by the actual  performance  during  the  Termination
                  Performance  Period before the  Termination  Date projected to
                  the last day of such Performance  Period and the maximum level
                  of the discretionary portion is achieved; and

             (3)  the Historical  Bonus,  which shall mean the greatest bonus
                  that the Executive accrued under any Bonus Plan in the last
                  three  (3)  Performance   Periods  that  ended  before  the
                  Post-Change Period; provided, however, that for purposes of
                  Article V of this Agreement,  the Historical  Bonus for the
                  Performance  Period in which the Termination  Date occurred
                  shall not be less than the cash  bonus  that the  Executive
                  accrued in the last  Performance  Period that ended  before
                  the Termination Date.

            c.  Incentive,   Savings  and  Retirement   Plans.  In  addition  to
      Guaranteed  Base Salary and  Guaranteed  Bonus payable as provided in this
      Section,  the  Executive  shall be  entitled  to  participate  during  the
      Post-Change  Period in all  incentive  (including  long-term  incentives),
      savings and retirement  Plans  applicable to other peer  executives of the
      Company  and  Services,  but in no event  shall  such  Plans  provide  the
      Executive with incentive  (including  long-term  incentives),  savings and
      retirement benefits which are less favorable,  in the aggregate,  than the
      most  favorable  of those  provided  by the  Company  or  Services  to the
      Executive or to peer executives  under such Plans as in effect at any time
      during the 90-day period immediately before the Effective Date.

            d.  Welfare  Benefit  Plans.  During  the  Post-Change  Period,  the
      Executive and the Executive's  family shall be eligible to participate in,
      and receive all benefits  under,  welfare  benefit  Plans  provided by the
      Company and Services(including, without limitation, medical, prescription,
      dental,   disability,   individual  life,  group  life,   dependent  life,
      accidental  death and travel accident  insurance  Plans) and applicable to
      other peer executives of the Company and Services and their families,  but
      in no event shall such Plans provide  benefits  which in any case are less
      favorable, in the aggregate,  than the most favorable of those provided to
      the Executive or to peer  executives  under such Plans as in effect at any
      time during the 90-day period immediately before the Effective Date.

            e. Fringe  Benefits.  During the Post-Change  Period,  the Executive
      shall be entitled to fringe  benefits and other  executive  perquisites in
      accordance with the most favorable Plans  applicable to peer executives of
      the Company and Services,  but in no event shall such Plans provide fringe
      benefits  and  other  executive  perquisites  which  in any  case are less
      favorable, in the aggregate,  than the most favorable of those provided by
      the Company and Services to the Executive or to peer executives under such
      Plans in effect at any time during the 90-day  period  immediately  before
      the Effective Date.


                                                                               6
<PAGE>

            f. Expenses.  During the Post-Change  Period, the Executive shall be
      entitled  to prompt  reimbursement  of all  reasonable  employment-related
      expenses  incurred by the  Executive  upon the  Company's or Services' (as
      applicable)  receipt of accountings in accordance  with the most favorable
      Policies applicable to peer executives of the Company and Services, but in
      no event shall such Policies be less favorable, in the aggregate, than the
      most  favorable  of those  provided  by the  Company  and  Services to the
      Executive or to peer executives  under such Policies in effect at any time
      during the 90-day period immediately before the Effective Date.

            g. Office and Support  Staff.  During the  Post-Change  Period,  the
      Executive  shall be  entitled  to an office or  offices of a size and with
      furnishings and other appointments,  and to exclusive personal secretarial
      and  other  assistance  in  accordance  with the most  favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

            h. Vacation.  During the Post-Change  Period, the Executive shall be
      entitled to paid vacation in accordance  with the most favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

      3.3   Stock Options.

      In  addition  to the  other  benefits  provided  in this  Section,  on the
Effective  Date, the Employer shall pay to the Executive a lump-sum cash payment
equal to the spread (fair market value over exercise  price) of all  outstanding
options  granted  to the  Executive  for shares of common  stock of the  Company
whether vested or not vested on the Effective Date. Whichever of the Company and
Services  is not the  Employer,  shall be jointly and  severally  liable for the
obligation of the Employer under this Section 3.3.

      3.4  Excess/Supplemental  Plans.  (Note: This Section 3.4 is applicable if
and  only if  your  participation  in the  Safety-Kleen  Supplemental  Executive
Retirement Plan is approved by the Human Resources and Compensation Committee of
the Company's Board of Directors)

      In  addition  to the  other  benefits  provided  in this  Section,  on the
Effective Date, the Employer shall pay to Executive an amount equal to the value
(determined  using  (i) the  interest  rate  published  by the  PBGC,  as of the
calendar month immediately prior to the Effective Date, for the specific purpose
of determining  the present value of lump sum benefits as discussed in 29 C.F.R.
4044 and (ii) the UP 84 Mortality Table) of the

                                                                               7
<PAGE>

Executive's accrued benefits under (1) the Safety-Kleen  Supplemental  Executive
Retirement Plan, or (2) any such successor plan or other  nonqualified  unfunded
retirement  Plan as may be in effect as of (or as may have been in effect at any
time  during the 90-day  period  immediately  before)  the  Effective  Date (the
"Excess/Supplemental Plans"), irrespective of whether or not Executive is vested
therein, and without any reduction for early retirement, early payout and social
security  benefits,  and taking into account for benefit accrual  purposes,  the
Executive's  period of service  with the Company  beginning  February  22, 1989.
Whichever of the Company and Services is not the Employer,  shall be jointly and
severally liable for the obligation of the Employer under this Section 3.4.

                                   ARTICLE IV.
                            TERMINATION OF EMPLOYMENT

      4.1 Disability.

            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's  employment  upon the  Executive's  Disability  (as defined in
      Section  4.1(b)) by giving the Executive or his legal  representative,  as
      applicable,  (1) written  notice in  accordance  with  Section 11.7 of the
      Employer's  intention to terminate the Executive's  employment pursuant to
      this Section and (2) a certification  of the  Executive's  Disability by a
      physician  selected  by  the  Employer  or  its  insurers  and  reasonably
      acceptable to the Executive or the Executive's legal  representative.  The
      Executive's  employment  shall  terminate  effective  on the 30th day (the
      "Disability  Effective Date") after the Executive's receipt of such notice
      unless,  before the Disability  Effective  Date, the Executive  shall have
      resumed the full-time performance of the Executive's duties.

            b. "Disability" means any medically  determinable physical or mental
      impairment  that has lasted for a  continuous  period of not less than six
      months and can be expected to be permanent or of indefinite duration.  and
      that  renders  the  Executive  unable to perform the  essential  functions
      required under this Agreement with or without reasonable accommodation.

      4.2 Death. The Executive's  employment shall terminate  automatically upon
      the Executive's death during the Post-Change Period.

      4.3   Cause.
            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's employment for Cause.

            b.  "Cause"  means  any  of the  following:  (i)  conviction  of the
      Executive of, or the  Executive's  pleading  guilty or nolo contendere to,
      any  felony  which  includes  as an  element  of the crime a  premeditated
      intention  to commit the act,  (ii)  Executive's  inability to perform his
      duties due to habitual alcohol or drug addiction, (iii) serious

                                                                               8
<PAGE>

      misconduct involving  dishonesty in the course of Executive's  employment,
      or (iv) the Executive's habitual neglect of his duties;  except that Cause
      shall not mean:

                  (1) bad judgment or negligence other than habitual neglect
                   of duty;

                  (2) any act or  omission  believed  by the  Executive  in good
                  faith to have been in or not  opposed to the  interest  of the
                  Company and Services (without intent of the Executive to gain,
                  directly or  indirectly,  a profit to which the  Executive was
                  not legally entitled);

                  (3) any act or omission with respect to which a  determination
                  could  properly have been made by the Board that the Executive
                  met the applicable  standard of conduct for indemnification or
                  reimbursement  under the Company's or Services'  by-laws,  any
                  applicable  indemnification  agreement,  or applicable law, in
                  each case in effect at the time of such act or omission; or

                  (4) any act or  omission  with  respect  to  which  notice  of
                  termination  of employment of the Executive is given more than
                  12 months after the  earliest  date on which any member of the
                  Board, not a party to the act or omission, knew or should have
                  known of such act or omission.

            c. Any termination of the Executive's employment by the Employer for
      Cause shall be communicated to the Executive by a Notice of Termination.

      4.4   Good Reason.

            a. During the Post-Change Period, the Executive may terminate his or
      her employment for Good Reason.

            b. "Good Reason" means any of the following:

                  (1) the assignment to the Executive of any duties inconsistent
                  in  any  respect  with  the  Executive's  position  (including
                  offices,  titles, reporting requirements or responsibilities),
                  authority or duties as contemplated by Section 3.1 (a)(1),  or
                  any other action by the Company or Services which results in a
                  diminution  on  or  other  material  adverse  change  in  such
                  position, authority or duties;

                  (2) any  failure by the Company or Services to comply with any
                  of the provisions of Article III;

                  (3) the  Company's or Services'  requiring the Executive to be
                  based at any  office  or  location  other  than  the  location
                  described in Section 3.1(a)(2);

                                                                               9
<PAGE>

                  (4)  any  other  material  adverse  change  to the  terms  and
                  conditions of the Executive's employment; or

                  (5)  any  purported   termination   by  the  Employer  of  the
                  Executive's  employment  other than as expressly  permitted by
                  this Agreement (any such  purported  termination  shall not be
                  effective for any other purpose under this Agreement).

      Any  reasonable  determination  of "Good Reason" made in good faith by the
Executive shall be conclusive.

            c. Any  termination  of  employment by the Executive for Good Reason
      shall be  communicated  to the  Employer  by a Notice  of  Termination.  A
      passage of time prior to delivery of a Notice of  Termination or a failure
      by the  Executive  to  include in the  Notice of  Termination  any fact or
      circumstance which contributes to a showing of Good Reason shall not waive
      any right of the Executive  under this Agreement or preclude the Executive
      from asserting such fact or  circumstance  in enforcing  rights under this
      Agreement.

                                   ARTICLE V.
                  OBLIGATIONS OF THE EMPLOYER UPON TERMINATION

      5.1 If by the Executive for Good Reason or by the Employer  Other Than for
Cause or  Disability.  If, during the  Post-Change  Period,  the Employer  shall
terminate Executive's  employment other than for Cause or Disability,  or if the
Executive  shall  terminate  employment  for Good  Reason,  the  Employer  shall
immediately pay the Executive, in addition to all vested rights arising from the
Executive's  employment  as specified in Article III, a cash amount equal to the
sum of the following amounts:

            a. to the extent not previously paid, the Guaranteed Base Salary and
     any accrued vacation pay through the Termination Date;

            b. the  difference  between  (1) the  product of (A) the  Guaranteed
     Bonus,  multiplied by (B) a fraction,  the numerator of which is the number
     of days in the  Termination  Performance  Period which  elapsed  before the
     Termination  Date, and the denominator of which is the total number of days
     in the Termination Performance Period, and (2) the amount of any Guaranteed
     Bonus  previously  paid to the  Executive  with respect to the  Termination
     Performance Period;

            c. all amounts  previously  deferred by or an accrual to the benefit
     of the Executive under any  nonqualified  deferred  compensation or pension
     plan,  together with any accrued earnings thereon,  and not yet paid by the
     Company or Services;

            d. an amount equal to the product of (1) three (3) multiplied by (2)
     the


                                                                              10
<PAGE>

     sum of (A) the Guaranteed Base Salary and (B) the Guaranteed Bonus;

            e. an amount equal to the sum of the value of the  unvested  portion
     of the  Executive's  accounts or accrued  benefits under any qualified plan
     maintained by the Company or Services, as of the Termination Date;

            f. if the Company or Services  maintains  any  cash-based  long term
     incentive  bonus  plan or  arrangement,  an amount in  satisfaction  of the
     Company's or Services (as  applicable)  obligation to the  Executive  under
     such plan or arrangement  equal to the amount which would be payable to the
     Executive if (i) the Company or Services (as  applicable)  attained  target
     performance over the entire  performance  period and (ii) the Executive had
     remained employed during the entire performance period;

            g. (Note:  This  Section 5.1 (g) is  applicable  if and only if your
     participation in the Safety-Kleen Supplemental Executive Retirement Plan is
     approved by the Human Resources and Compensation Committee of the Company's
     Board of Directors) the difference between (1) an amount equal to the value
     (determined  using the  actuarial  assumptions  then applied by the Pension
     Benefit  Guaranty  Corporation  for determining  immediate  annuity present
     values) of the Executive's  accrued benefits under the  Excess/Supplemental
     Plans  (taking into account for benefit  accrual  purposes the  Executive's
     period of service with the Company beginning  February 22, 1989) calculated
     as  though  the  Executive  (A)  continued  to  accrue  benefits  under the
     Excess/Supplemental Plans for a period of three years after the Termination
     Date,  and (B) received  compensation  during each year of such  three-year
     period  equal to the sum of the  Guaranteed  Base  Salary  and the  highest
     Guaranteed  Bonus paid (or  payable)  to the  Executive  in the three years
     preceding the Termination Date, and (C) were three (3) years older than his
     age at the Termination Date and (2) the amount actually  previously paid to
     Executive  pursuant  to  Section  3.4;  provided  however,  that the amount
     computed  under this paragraph  shall not be reduced for early  retirement,
     early payout and social security benefits; further provided,  however, that
     such amount shall be paid  irrespective  of whether  Executive is vested in
     any of the Excess/ Supplemental Plans; and

           h.     pay Executive outplacement services, to a maximum of $25,000.

      Until the third  anniversary of the Termination Date or such later date as
  any Plan of the Company or Services may specify,  the Employer  shall continue
  to provide to the Executive and the provide to the Executive's  family welfare
  benefits  (including,  without  limitation,  medical,  prescription,   dental,
  disability,  individual life, group life, accidental death and travel accident
  insurance   plans  and  programs),   fringe   benefits  and  other   executive
  perquisites,  which are at least as favorable as the most  favorable  Plans of
  the Company and Services applicable to Executive and other peer executives and
  their  families  as of the  Termination  Date,  but which are in no event less
  favorable than the most favorable Plans of the Company and Services applicable
  to the  Executive  and other peer  executives  and their  families  during the
  90-day period immediately before the Effective Date. The cost to the

                                                                              11
<PAGE>

  Executive of such welfare  benefits shall not exceed the cost of such benefits
  to the Executive  immediately  before the  Termination  Date or, if less,  the
  Effective  Date.  Notwithstanding  the foregoing,  if the Executive is covered
  under any  medical,  life,  or  disability  insurance  plan(s)  provided  by a
  subsequent  employer,  then the amount of coverage  required to be provided by
  the Employer  hereunder  shall be  secondary  to the coverage  provided by the
  subsequent  employer's  medical,  life, or disability  insurance plan(s).  The
  Executive's rights under this Section shall be in addition to, and not in lieu
  of,  any  post-termination  continuation  coverage  or  conversion  rights the
  Executive may have pursuant to applicable law,  including  without  limitation
  continuation  coverage  required by Section  4980B of the Code and Section 601
  et. seq. of the Employee Retirement Income Security Act of 1974, as amended.

      5.2  If by  the  Employer  for  Cause.  If  the  Employer  terminates  the
  Executive's employment for Cause during the Post-Change Period, this Agreement
  shall terminate  without further  obligation by the Employer to the Executive,
  other  than  the  obligation  immediately  to pay the  Executive  in cash  the
  Executive's  Guaranteed  Base Salary through the  Termination  Date,  plus the
  amount of any  compensation  previously  deferred by the  Executive,  plus any
  accrued vacation pay, in each case to the extent not previously paid.

      5.3 If by the  Executive  Other  Than for Good  Reason.  If the  Executive
  terminates  employment  during  the  Post-Change  Period  other  than for Good
  Reason,  Disability or death,  this Agreement shall terminate  without further
  obligations by the Employer,  other than the obligation immediately to pay the
  Executive  in cash all amounts  specified  in clauses  (a), (b) and (c) of the
  first  sentence  of  Section  5.1 (such  amounts  collectively,  the  "Accrued
  Obligations").

      5.4 If by the Employer for  Disability.  If the  Employer  terminates  the
  Executive's  employment  by reason of the  Executive's  Disability  during the
  Post-Change Period, this Agreement shall terminate without further obligations
  to the Executive, other than

            (a) the  Employer's  obligation  immediately to pay the Executive in
      cash all Accrued Obligations, and

            (b) the  Executive's  right after the  Disability  Effective Date to
      receive disability and other benefits at least equal to the greater of (1)
      those  provided under the most favorable  disability  Plans  applicable to
      peer  executives of the Company or Services in effect  immediately  before
      the  Termination  Date or (2)  those  provided  under  the most  favorable
      disability  Plans of the Company and Services in effect at any time during
      the 90-day period immediately before the Effective Date.

      5.5 If upon Death. If the  Executive's  employment is terminated by reason
  of the Executive's death during the Post-Change  Period,  this Agreement shall
  terminate without further obligations to the Executive's legal representatives
  under this Agreement, other than the obligation of the Employer immediately to
  pay the  Executive's  estate or beneficiary  in cash all Accrued  Obligations.
  Despite  anything in this Agreement to the contrary,  the

                                                                              12
<PAGE>

  Executive's family shall be entitled to receive benefits at least equal to the
  most favorable  benefits provided by the Company and Services to the surviving
  families of peer  executives of the Company or Services under such Plans,  but
  in no event  shall such  Plans  provide  benefits  which in each case are less
  favorable, in the aggregate,  than the most favorable of those provided by the
  Company and Services to the  Executive  under such Plans in effect at any time
  during the 90-day period immediately before the Effective Date.

      5.6 Joint and Several Obligation. Whichever of the Company and Services is
  not the Employer shall be jointly and severally  liable for the obligations of
  the Employer under this Article V.



                                   ARTICLE VI.
                            NON-EXCLUSIVITY OF RIGHTS

      6.1 Waiver of Other Severance Rights. To the extent that payments are made
  to the  Executive  pursuant to Section 5.1, the  Executive  hereby  waives the
  right to receive  severance  payments under any other Plan or agreement of the
  Company or Services.

      6.2 Other  Rights.  Except as  provided  in Section  6.1 and in the second
  paragraph of this  Agreement,  this  Agreement  shall not prevent or limit the
  Executive's  continuing  or  future  participation  in  any  benefit,   bonus,
  incentive or other Plans,  provided by the Company or any of its  Subsidiaries
  and for which the Executive  may qualify,  nor shall this  Agreement  limit or
  otherwise  affect  such  rights  as the  Executive  may have  under  any other
  agreements  with the  Company or any of its  Subsidiaries.  Amounts  which are
  vested benefits or which the Executive is otherwise  entitled to receive under
  any Plan of the Company or any of its  Subsidiaries  and any other  payment or
  benefit  required by law at or after the Termination  Date shall be payable in
  accordance  with such Plan or applicable  law except as expressly  modified by
  this Agreement.

                                  ARTICLE VII.
                   CERTAIN ADDITIONAL PAYMENTS BY THE EMPLOYER

      7.1 Gross-up for Certain  Taxes.  If it is determined  (by the  reasonable
  computation of the Employer's independent auditors, which determinations shall
  be  certified  to by such  auditors  and set  forth in a  written  certificate
  ("Certificate")  delivered  to the  Executive)  that any  benefit  received or
  deemed received by the Executive from the Company or Services pursuant to this
  Agreement  or  otherwise  (collectively,  the  "Payments")  is or will  become
  subject to any excise tax under  Section  4999 of the Code or any  similar tax
  payable  under any  United  States  federal,  state,  local or other law (such
  excise tax and all such similar taxes collectively,  "Excise Taxes"), then the
  Employer shall,  immediately  after such  determination,  pay the Executive an
  amount (the "Gross-up Payment") equal to the product of



                                                                              13
<PAGE>

            (a) the amount of such Excise Taxes

  multiplied by

            (b) the Gross-up Multiple (as defined in Section 7.4).

      The  Gross-up  Payment is intended to  compensate  the  Executive  for the
  Excise Taxes and any federal,  state, local or other income or excise taxes or
  other taxes payable by the Executive with respect to the Gross-up Payment.

      The Executive or the Employer may at any time request the  preparation and
  delivery to the Executive of a Certificate. The Employer shall, in addition to
  complying with Section 7.2, cause all determinations and certifications  under
  the Article to be made as soon as reasonably  possible and in adequate time to
  permit  the  Executive  to prepare  and file the  Executive's  individual  tax
  returns on a timely basis.

      7.2  Determination by the Executive.

            a. If the  Employer  shall  fail to  deliver  a  Certificate  to the
      Executive (and to pay to the Executive the amount of the Gross-up Payment,
      if any)  within 14 days  after  receipt  from the  Executive  of a written
      request  for a  Certificate,  or if at any  time  following  receipt  of a
      Certificate the Executive  disputes the amount of the Gross-up Payment set
      forth therein, the Executive may elect to demand the payment of the amount
      which the  Executive,  in  accordance  with an  opinion  of counsel to the
      Executive  ("Executive  Counsel  Opinion"),  determines to be the Gross-up
      Payment. Any such demand by the Executive shall be made by delivery to the
      Employer  of  a  written  notice  which  specifies  the  Gross-up  Payment
      determined  by the Executive and an Executive  Counsel  Opinion  regarding
      such Gross-up Payment (such written notice and opinion  collectively,  the
      "Executive's  Determination").  Within  14  days  after  delivery  of  the
      Executive's  Determination to the Employer, the Employer shall either (1 )
      pay the  Executive  the  Gross-up  Payment  set  forth in the  Executive's
      Determination (less the portion of such amount, if any, previously paid to
      the  Executive  by  the  Employer)  or (2)  deliver  to  the  Executive  a
      Certificate  specifying the Gross-up Payment  determined by the Employer's
      independent  auditors,  together with an opinion of the Employer's counsel
      (" Employer Counsel Opinion"),  and pay the Executive the Gross-up Payment
      specified in such  Certificate.  If for any reason the  Employer  fails to
      comply with clause (2) of the  preceding  sentence,  the Gross-up  Payment
      specified in the  Executive's  Determination  shall be controlling for all
      purposes.

            b. If the  Executive  does not make a request  for, and the Employer
        does not deliver to the Executive,  a Certificate,  the Employer  shall,
        for  purposes  of  Section  7.3,  be deemed to have  determined  that no
        Gross-up Payment is due.

                                                                              14
<PAGE>

       7.3 Additional  Gross-up Amounts.  If, despite the initial  conclusion of
the Employer  and/or the Executive that certain  Payments are neither subject to
Excise Taxes nor to be counted in determining whether other Payments are subject
to Excise Taxes (any such item, a "Non-Parachute  Item"), it is later determined
(pursuant to the subsequently-enacted  provisions of the Code, final regulations
or  published  rulings  of the  IRS,  final  judgment  of a court  of  competent
jurisdiction   or  the  Employer's   independent   auditors)  that  any  of  the
Non-Parachute  Items  are  subject  to Excise  Taxes,  or are to be  counted  in
determining  whether any Payments are subject to Excise  Taxes,  with the result
that the amount of Excise  Taxes  payable by the  Executive  is greater than the
amount  determined by the Employer or the  Executive  pursuant to Section 7.1 or
7.2, as  applicable,  then the Employer shall pay the Executive an amount (which
shall also be deemed a Gross-up  Payment) equal to the product of

              (a)    the sum  of(1)  such  additional  Excise  Taxes and (2) any
                     interest,   fines,  penalties,   expenses  or  other  costs
                     incurred  by the  Executive  as a result of having  taken a
                     position in accordance with a  determination  made pursuant
                     to Section 7.1

  multiplied by

              (b)    the Gross-up Multiple.

      7.4 Gross-up Multiple.  The Gross-up Multiple shall equal a fraction,  the
numerator of which is one (1.0), and the denominator of which is one (1.0) minus
the sum,  expressed as a decimal fraction,  of the rates of all federal,  state,
local and other  income and other taxes and any Excise Taxes  applicable  to the
Gross-up Payment.  (If different rates of tax are applicable to various portions
of a Gross-up Payment, the weighted average of such rates shall be used.)

     7.5 Opinion of Counsel.  "Executive  Counsel Opinion" means a legal opinion
of  nationally  recognized  executive  compensation  counsel  that  there  is  a
reasonable basis to support a conclusion that the Gross-up Payment determined by
the  Executive has been  calculated  in accord with this Article and  applicable
law. " Employer Counsel Opinion" means a legal opinion of nationally  recognized
executive compensation counsel that (a) there is a reasonable basis to support a
conclusion that the Gross-up  Payment set forth of the Certificate of Employer's
independent  auditors  has been  calculated  in  accord  with this  Article  and
applicable law, and (b) there is no reasonable  basis for the calculation of the
Gross-up Payment determined by the Executive.

     7.6 Amount Increased or Contested.  The Executive shall notify the Employer
in  writing  of any  claim  by the  IRS  or  other  taxing  authority  that,  if
successful,  would  require the payment by the  Employer of a Gross-up  Payment.
Such  notice  shall  include the nature of such claim and the date on which such
claim is due to be  paid.  The  Executive  shall  give  such  notice  as soon as
practicable,  but no later than 10  business  days,  after the  Executive  first
obtains actual knowledge of such claim;  provided,  however, that any failure to
give or delay in giving  such notice  shall  affect the  Employer's  obligations
under this Article only if and to the extent that such failure results in actual
prejudice to the Employer.  The Executive  shall

                                                                              15
<PAGE>

not pay such claim less than 30 days after the  Executive  gives such  notice to
the Employer (or, if sooner, the date on which payment of such claim is due). If
the Employer  notifies the  Executive in writing  before the  expiration of such
period that it desires to contest such claim, the Executive shall:

            a.    give  the  Employer  any  information   that  it  reasonably
      requestsrelating to such claim,

            b. take such action in connection  with contesting such claim as the
      Employer  reasonably  requests  in writing  from time to time,  including,
      without  limitation,  accepting legal  representation with respect to such
      claim by an attorney reasonably selected by the Employer,

            c.  cooperate with the Employer in good faith to contest such claim,
      and

            d.    permit the  Employer  to  participate  in any  proceedings
      relating to such claim;

      provided, however, that the Employer shall bear and pay directly all costs
      and expenses  (including  additional  interest and penalties)  incurred in
      connection  with such contest and shall  indemnify  and hold the Executive
      harmless,  on an  after-tax  basis,  for any  Excise  Tax or  income  tax,
      including  related  interest  and  penalties,  imposed as a result of such
      representation  and payment of costs and  expenses.  Without  limiting the
      foregoing,  the Employer shall control all  proceedings in connection with
      such  contest  and, at its sole  option,  may pursue or forego any and all
      administrative  appeals,  proceedings,  hearings and conferences  with the
      taxing  authority  in respect of such claim and may,  at its sole  option,
      either direct the Executive to pay the tax claimed and sue for a refund or
      contest  the claim in any  permissible  manner.  The  Executive  agrees to
      prosecute  such  contest  to a  determination  before  any  administrative
      tribunal,  in a court of initial jurisdiction and in one or more appellate
      courts, as the Employer shall determine;  provided,  however,  that if the
      Employer directs the Executive to pay such claim and sue for a refund, the
      Employer shall advance the amount of such payment to the Executive,  on an
      interest-free  basis and shall  indemnify the  Executive,  on an after-tax
      basis,  for any Excise Tax or income tax,  including  related  interest or
      penalties, imposed with respect to such advance; and further provided that
      any extension of the statute of  limitations  relating to payment of taxes
      for the taxable year of the Executive with respect to which such contested
      amount is claimed to be due is limited  solely to such  contested  amount.
      The  Employer's  control of the  contest  shall be limited to issues  with
      respect to which a Gross-up Payment would be payable.  The Executive shall
      be  entitled  to settle or  contest,  as the case may be, any other  issue
      raised by the IRS or other taxing authority.

       7.7 Refunds. If, after the receipt by the Executive of an amount advanced
by the  Employer  pursuant to Section  7.6, the  Executive  becomes  entitled to
receive any refund with

                                                                              16
<PAGE>

respect to such claim, the Executive shall (subject to the Employer's  complying
with the  requirements  of Section 7.6)  promptly pay the Employer the amount of
such refund  (together  with any interest  paid or credited  thereon after taxes
applicable  thereto).  If,  after  the  receipt  by the  Executive  of an amount
advanced by the Employer  pursuant to Section 7.6, a determination  is made that
the Executive shall not be entitled to any refund with respect to such claim and
the Employer  does not notify the  Executive in writing of its intent to contest
such  determination  before the expiration of 30 days after such  determination,
then such  advance  shall be forgiven and shall not be required to be repaid and
the amount of such advance shall offset,  to the extent  thereof,  the amount of
Gross-up Payment required to be paid. Any contest of a denial of refund shall be
controlled by Section 7.6.

       7.8 Joint and Several  Obligation.  Whichever of the Company and Services
is not the Employer shall be jointly and severally liable for the obligations of
the Employer  under this Article VII. In the event of any assertion of liability
under this  Section 7.8 against  whichever of the Company or Services is not the
Employer,  the party against which such  liability is asserted  shall succeed to
all of the rights and obligations of the Employer under Article VII.

                                  ARTICLE VIII.
                              EXPENSES AND INTEREST

      8.1  Legal Fees and Other Expenses.

            a. If the Executive incurs legal, accounting and other fees or other
      expenses in a good faith effort to obtain  benefits  under this  Agreement
      (including,  without  limitation,  the  fees  and  other  expenses  of the
      Executive's  legal counsel and the  accounting and other fees and expenses
      in  connection  with the  delivery of the  Opinion  referred to in Article
      VII),  regardless  of  whether  the  Executive  ultimately  prevails,  the
      Employer shall reimburse the Executive on a monthly basis upon the written
      request for such fees and expenses to the extent not reimbursed  under the
      Company's and Services' officers and directors liability insurance policy,
      if any. The existence of any  controlling  case or controlling  regulatory
      law  which  is  directly  inconsistent  with  the  position  taken  by the
      Executive shall be evidence that the Executive did not act in good faith.

            b.  Reimbursement  of legal fees and expenses  shall be made monthly
      upon the written  submission of a request for reimbursement  together with
      evidence  that such fees and  expenses are due and payable or were paid by
      the  Executive.  If the Employer  shall have  reimbursed the Executive for
      legal fees and expenses and it is later  determined that the Executive was
      not acting in good faith, all amounts paid on behalf of, or reimbursed to,
      the Executive shall be promptly refunded to the Employer.

       8.2  Interest.  If the  Employer  does  not  pay  any  amount  due to the
Executive  under this  Agreement  within three days after such amount became due
and owing,  interest shall



                                                                              17
<PAGE>

accrue on such  amount  from the date it became due and owing  until the date of
payment at a annual rate equal to two percent  (2.0%) above the base  commercial
lending rate announced by The Bank of America in effect from time to time during
the period of such nonpayment.

       8.3 Joint and Several  Obligation.  Whichever of the Company and Services
is not the Employer shall be jointly and severally liable for the obligations of
the Employer  under this Article  VIII.  The right of refund  referred to in the
last  sentence  of Section  8.1 b. shall  inure to  whichever  of the Company or
Services originally paid the reimbursement to the Executive.

                                   ARTICLE IX.
                            NO SET-OFF OR MITIGATION

      9.1 No Set-off by Company or Services.  The  Executive's  right to receive
when due the payments and other  benefits  provided for under this  Agreement is
absolute,  unconditional  and  subject to no set-off,  counterclaim  or legal or
equitable defense.  Time is of the essence in the performance by the Company and
Services of their obligations under this Agreement.  Any claim which the Company
or  Services  may have  against  the  Executive,  whether  for a breach  of this
Agreement or otherwise,  shall be brought in a separate action or proceeding and
not as part of any action or proceeding  brought by the Executive to enforce any
rights against the Company or Services under this Agreement.

      9.2 No Mitigation.  The Executive  shall not have any duty to mitigate the
amounts  payable by the Company or Services  under this Agreement by seeking new
employment following  termination.  Except as specifically otherwise provided in
this  Agreement,  all amounts  payable  pursuant to this Agreement shall be paid
without  reduction  regardless of any amounts of salary,  compensation  or other
amounts  which may be paid or  payable  to the  Executive  as the  result of the
Executive's employment by another employer.

                                   ARTICLE X.
                       CONFIDENTIALITY AND NON-COMPETITION

      10.1 Confidentiality.  Executive acknowledges that it is the policy of the
Company and its Subsidiaries to maintain as secret and confidential all valuable
and unique information and techniques acquired, developed or used by the Company
and its  Subsidiaries  relating to their  business,  operations,  employees  and
customers,  which gives the Company and its Subsidiaries a competitive advantage
in the  businesses  in  which  the  Company  and its  Subsidiaries  are  engaged
("Confidential  Information").  Executive  recognizes that all such Confidential
Information  is  the  sole  and  exclusive  property  of  the  Company  and  its
Subsidiaries, and that disclosure of Confidential Information would cause damage
to the Company and its  Subsidiaries.  Executive agrees that, except as required
by the duties of his  employment  with the Company and/or its  Subsidiaries  and
except in connection with enforcing the Executive's  rights under this Agreement
or if  compelled by a court or  governmental  agency,  he will not,  without the
consent of the  Company,  disseminate  or

                                                                              18
<PAGE>

otherwise disclose any Confidential  Information  obtained during his employment
with the Company  and/or its  Subsidiaries  for so long as such  information  is
valuable and unique.

      10.2     Non-competition/ Non-solicitation.

            a. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  will not at any time directly or  indirectly,  in any capacity,
      engage or  participate  in, or become  employed  by or render  advisory or
      consulting or other services in connection with any Prohibited Business as
      defined in Section 10.2(d).

            b. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive shall not make any financial investment,  whether in the form of
      equity  or debt,  or own any  interest,  directly  or  indirectly,  in any
      Prohibited  Business.  Nothing in this  Section  10.2(b)  shall,  however,
      restrict  Executive  from making any investment in any company whose stock
      is listed on a national  securities  exchange  or  actively  traded in the
      over-the-counter  market;  provided that (1) such investment does not give
      Executive  the  right or  ability  to  control  or  influence  the  policy
      decisions of any Prohibited  Business,  and (2) such  investment  does not
      create a conflict of interest  between  Executive's  duties  hereunder and
      Executive's interest in such investment.

            c. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  shall not (1) employ any  employee  of the  Company  and/or its
      Subsidiaries   or  (2)  interfere   with  the  Company's  or  any  of  its
      Subsidiaries'  relationship  with,  or  endeavor  to entice  away from the
      Company and/or its Subsidiaries any person,  firm,  corporation,  or other
      business  organization  who or which at any time (whether  before or after
      the date of  Executive's  termination  of  employment),  was an  employee,
      customer,  vendor or supplier of, or  maintained  a business  relationship
      with,  any  business  of the  Company  and/or its  Subsidiaries  which was
      conducted at any time during the period  commencing  one year prior to the
      termination of employment.

            d. For the purpose of this Section 10.2, "Prohibited Business" shall
      be  defined as any entity and any  branch,  office or  operation  thereof,
      which is a direct  and  material  competitor  of the  Company  and/ or its
      Subsidiaries  wherever the Company and/ or its Subsidiaries does business,
      in the United States or abroad.

      10.3 Remedy.  Executive  and the Company  specifically  agree that, in the
event that  Executive  shall  breach his  obligations  under this Article X, the
Company  and its  Subsidiaries  will suffer  irreparable  injury and no adequate
remedy for such breach, and shall be entitled to injunctive relief therefor, and
in particular,  without  limiting the  generality of the foregoing,

                                                                              19
<PAGE>

the Company  shall not be  precluded  from  pursuing any and all remedies it may
have at law or in equity for breach of such obligations; provided, however, that
such  breach  shall  not in any  manner or degree  whatsoever  limit,  reduce or
otherwise  affect  the  obligations  of the  Company  and  Services  under  this
Agreement,  and  in no  event  shall  an  asserted  breach  of  the  Executive's
obligations under this Article X constitute a basis for deferring or withholding
any amounts otherwise payable to the Executive under this Agreement.

                                   ARTICLE XI.
                                  MISCELLANEOUS

       11.1 No  Assignability.  This  Agreement is personal to the Executive and
without  the prior  written  consent of the Company  and  Services  shall not be
assignable  by the Executive  otherwise  than by will or the laws of descent and
distribution. This Agreement shall inure to the benefit of and be enforceable by
the Executive's legal representatives.

       11.2  Successors.  This  Agreement  shall  inure to the benefit of and be
binding upon the Company,  Services and their respective successors and assigns.
The Company and Services will require any successor (whether direct or indirect,
by purchase, merger,  consolidation or otherwise) to all or substantially all of
their  respective  businesses or assets to assume expressly and agree to perform
this  Agreement  in the same  manner and to the same  extent that the Company or
Services,  as applicable,  would be required to perform it if no such succession
had taken place.  Any successor to the business  and/or assets of the Company or
Services  which assumes or agrees to perform this Agreement by operation of law,
contract,  or otherwise  shall be jointly and severally  liable with the Company
and  Services  under this  Agreement  as if such  successor  were the Company or
Services, as applicable.

       11.3  Payments to  Beneficiary.  If the Executive  dies before  receiving
amounts to which the Executive is entitled  under this  Agreement,  such amounts
shall be paid in a lump sum to the  beneficiary  designated  in  writing  by the
Executive, or if none is so designated, to the Executive's estate.

       11.4  Non-alienation  of Benefits.  Benefits payable under this Agreement
shall not be subject in any manner to anticipation,  alienation, sale, transfer,
assignment, pledge, encumbrance,  charge, garnishment,  execution or levy of any
kind,  either  voluntary or  involuntary,  before actually being received by the
Executive,  and any such  attempt to dispose  of any right to  benefits  payable
under this Agreement shall be void.

       11.5  Severability.  If any  one or  more  articles,  sections  or  other
portions of this Agreement are declared by any court or  governmental  authority
to be unlawful or invalid,  such  unlawfulness or invalidity  shall not serve to
invalidate any article,  section or other portion not so declared to be unlawful
or invalid. Any article,  section or other portion so declared to be unlawful or
invalid  shall be  construed  so as to  effectuate  the  terms of such  article,
section or other portion to the fullest extent possible while  remaining  lawful
and valid.

                                                                              20
<PAGE>

       11.6  Amendments.  Except as provided in Sections  2.2 and 11.14  hereof,
this  Agreement  shall not be  altered,  amended or  modified  except by written
instrument executed by the Company, Services and Executive.

       11.7 Notices.  All notices and other  communications under this Agreement
shall be in  writing  and  delivered  by hand or by first  class  registered  or
certified mail, return receipt requested, postage prepaid, addressed as follows:

                        If to the Executive:
                        (First Name) (Last Name)
                        (Address)
                        (City) (State) (Postal Code)

                        If to the Company:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration



                                                                              21
<PAGE>




                        If to Services:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration

  or to such other address as either party shall have  furnished to the other in
  writing.  Notice and communications  shall be effective when actually received
  by the addressee.

       11.8  Counterparts.  This  Agreement  may be  executed  in  one  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together constitute one and the same instrument.

       11.9 Governing Law. This Agreement  shall be interpreted and construed in
accordance  with the laws of the State of South  Carolina  without regard to its
choice of law principles.

       11.10  Captions.  The  captions of this  Agreement  are not a part of the
provisions hereof and shall have no force or effect.

       11.11 Tax  Withholding.  The Company and Services  may withhold  from any
amounts payable under this Agreement any federal,  state or local taxes that are
required to be withheld pursuant to any applicable law or regulation.

       11.12 No Waiver. The Executive's failure to insist upon strict compliance
with any  provision  of this  Agreement  shall  not be  deemed a waiver  of such
provision or any other provision of this Agreement. A waiver of any provision of
this  Agreement  shall not be deemed a waiver  of any other  provision,  and any
waiver of any default in any such provision  shall not be deemed a waiver of any
later default thereof or of any other provision.

      11.13 Entire Agreement.  This Agreement contains the entire  understanding
of the  Company  and  Services  and the  Executive  with  respect to its subject
matter.

      11.14  Cancellation.  The Company and Services may, at any time prior to a
Change in Control,  unilaterally  cancel this Agreement on behalf of all parties
hereto by both of them (and not only one of them)  notifying  the  Executive  of
such  cancellation in writing at least twelve (12) months prior to the effective
date of the  cancellation,  provided  however  that no such  notice may be given
after an Imminent Change of Control Date.



                                                                              22
<PAGE>










            IN WITNESS  WHEREOF,  the  Executive,  Services and the Company have
executed this Agreement as of the date first above written.



                        -------------------------------
                        (name)  (the Executive)

                        SAFETY-KLEEN CORP.

                        By:----------------------------
                        Kenneth W. Winger
                        President & Chief Executive Officer

                        SAFETY-KLEEN SERVICES, INC.


                        By:----------------------------
                        Kenneth W. Winger
                        President








                                                                 October 6, 1999

Private and Confidential

(Title) (FirstName) (LastName)
(Address1)
(City), (State)  (PostalCode)

Dear (FirstName):

      Safety-Kleen  Corp.   ("Safety-Kleen")  and  Safety-Kleen  Services,  Inc.
("Services"),  (Safety-Kleen,  Services,  and their  subsidiaries,  collectively
referred to herein, as the "Corporation")  consider it essential and in the best
interests of the  Corporation  and their  shareholders  to foster the continuous
employment of key management  personnel.  In this regard, the board of directors
of Safety-Kleen  (the "Board") has determined that  appropriate  steps should be
taken to reinforce and encourage the continued  attention and  dedication of the
members of senior management of the Corporation,  including  yourself,  to their
assigned  duties  without  distraction  in the  face of  potentially  disturbing
circumstances  arising from any possible  change in control of  Safety-Kleen  or
Services.

      In order to induce  you to remain in the  employ of the  Corporation,  the
Corporation  has agreed with you that you shall receive the  severance  benefits
set  forth  in this  letter  agreement  (this  "Agreement")  in the  event  your
employment with the Corporation is terminated  subsequent to a Change in Control
(as defined below) under the circumstances described below.

1. CHANGE IN CONTROL.  No benefits shall be payable hereunder unless there shall
   have been a "Change in Control", which, for purposes of this Agreement, shall
   mean the occurrence of any of the following:

            a. (X) any person (as such term is used in Rule  13(d)- 5 of the SEC
      under the 1934 Act) or group (as such term is defined in Section  13(d) of
      the 1934 Act),  other than a subsidiary  or any employee  benefit plan (or
      related trust) of Safety-Kleen  or its subsidiary,  becomes the beneficial
      owner of 15% or more of the  common  stock of  Safety-Kleen  or of  voting
      securities  representing  15% or more of the combined  voting power of all
      voting  securities  of  Safety-Kleen,  (Y) Laidlaw  Inc.  ceases to be the
      beneficial owner,  directly or indirectly,  of 43.6% or more of the voting
      securities  of  Safety-Kleen  and (Z) another  person or group becomes the
      beneficial  owner of voting  securities of Safety-Kleen  which represent a
      larger number of voting securities than those held by Laidlaw Inc.
            b. within a period of 24 months or less, the individuals  who, as of
      any date,  constitute the Board (the "Incumbent  Directors") cease for any
      reason to

                                       1
<PAGE>

      constitute  at least a  majority  of the  Board  unless at the end of such
      period,  the  majority of  individuals  then  constituting  the Board were
      nominated  upon  the   recommendation  of  a  majority  of  the  Incumbent
      Directors.
            c. the sale or other  disposition of all or substantially all of the
      assets of  Safety-Kleen or Services.

            d. the sale or other  disposition by  Safety-Kleen of 50% or more of
      the voting  securities of Services or any other  transaction which results
      in any person,  other than  Safety-Kleen  or a subsidiary  or any employee
      benefit plan of Safety-Kleen, becoming the beneficial owner of 50% or more
      of the voting securities of Services.

2.    TERMINATION  FOLLOWING CHANGE IN CONTROL.  If a Change in Control shall
      have occurred,  you shall be entitled to the benefits  provided for herein
      upon the subsequent termination of your employment  ("Termination") during
      the  period  ("Window  Period")  beginning  upon the date of the Change in
      Control  and  ending  on  the  third  anniversary  thereof,   unless  such
      Termination is because of your death or retirement, by the Corporation for
      Cause  or by you  other  than  for  Good  Reason.  For  purposes  of  this
      paragraph:

            a.    "Cause" shall mean:

                  (I) the willful and continued  failure by you substantially to
                  perform your duties with the Corporation  (other than any such
                  failure  resulting  from your  incapacity  due to  physical or
                  mental  illness  or any such  actual  or  anticipated  failure
                  resulting  from  Termination  by  you  for  Good  Reason,   as
                  hereinafter  defined) after a written  demand for  substantial
                  performance  is  delivered  to you by the  Board or  executive
                  management  of  the  Corporation,  which  demand  specifically
                  identifies   the  manner  in  which  the  Board  or  executive
                  management believes that you have not substantially  performed
                  your duties and you failed to correct  such failure to perform
                  your  duties  within  30 days  after  such  written  demand is
                  delivered to you; or

                  (II)  the  willful   engaging  by  you  in  conduct   that  is
                  demonstrably  and  materially  injurious  to the  Corporation,
                  monetarily or otherwise,  and no act or failure to act on your
                  part shall be deemed  "willful"  unless done, or omitted to be
                  done, by you not in good faith and without  reasonable  belief
                  that your action or omission was in the best  interests of the
                  Corporation;

            b. "Good  Reason"  shall mean the  occurrence,  without your express
            written consent, of any of the following:

                                       2
<PAGE>

                  (I)    INCONSISTENT  DUTIES -  a  meaningful  and  detrimental
                  alteration in your position or in the nature or status of your
                  responsibilities from those in effect immediately prior to the
                  Change in Control;

                  (II)   REDUCTION  IN   REMUNERATION   -  a  reduction  by  the
                  Corporation   in  your   annual   base  salary  as  in  effect
                  immediately  prior to the  Change  in  Control  or at any time
                  during the Window Period; or a reduction by the Corporation in
                  long term incentive opportunity as in effect immediately prior
                  to the  Change in  Control  or at any time  during  the Window
                  Period; or a reduction by the Corporation in bonus opportunity
                  as in effect  immediately prior to the Change in Control or at
                  any time during the Window Period;

                  (III)  RELOCATION  - the  relocation  of  the  office  of  the
                  Corporation  where you are  employed at the time of the Change
                  in Control  ("the CIC  Location")  to a location  that is more
                  than 40 miles away from the CIC Location,  or the  Corporation
                  requiring you to be based more than 40 miles away from the CIC
                  Location  (except  for  required  travel  on  the  Corporation
                  business  to an  extent  substantially  consistent  with  your
                  customary  business travel  obligations in the ordinary course
                  of your  business  during  the year  immediately  prior to the
                  Change in Control);  provided,  however,  your  relocation  to
                  Columbia, South Carolina, in connection with the consolidation
                  of  Safety-Kleen  Corp.   offices  in  Columbia,   S.C.,  such
                  relocation shall not constitute  Reason for Termination by you
                  and  shall  not  entitle  you  to  the   Termination   Payment
                  (hereinafter   defined)  in  the  event  of  your  refusal  to
                  relocate.

                  (IV) BENEFITS AND PERQUISITES - the failure by the Corporation
                  to continue to provide you with  benefits and  perquisites  at
                  least as favorable as those enjoyed by you  immediately  prior
                  to the Change in Control as may be  increased  thereafter  and
                  prior to the expiry of the Window Period.

3.    TERMINATION  PAYMENT.  If any event of  Termination  shall have occurred
      during  the  Window  Period  and prior to the expiry of the Term of this
      Agreement,  and you shall have provided written notice to that effect to
      the  Corporation,  you shall be entitled to a payment ("the  Termination
      Payment")   in  a  lump  sum  (subject  to   mandatory   statutory   tax
      withholding)  in the amount of  eighteen  month's  average  compensation
      plus to the extent not previously paid but accrued,  through the date of
      Termination,  vacation pay and salary.  Average compensation is equal to
      the average aggregate monthly salary,  bonus, and perquisites during the
      fiscal  year of the  Corporation  ended  immediately  prior  to the date
      ("Termination  Payment Date") on which the Termination  Payment shall be
      due provided,  however,  the average compensation shall not be less than
      the average

                                       3
<PAGE>

      aggregate  monthly  salary,  bonus,  and  perquisites  received during the
      fiscal year ending August 31, 1999.


            4.  CONTINUATION  OF BENEFITS  FOLLOWING  TERMINATION.  For eighteen
      months  following  the  Termination,  the  Corporation  shall  continue to
      provide  to you and  your  family  welfare  benefits  (including,  without
      limitation,  medical, prescription,  dental, disability,  individual life,
      group  life,  accidental  death and travel  accident  insurance  plans and
      programs),  fringe benefits and other  perquisites,  which are at least as
      favorable as the most favorable plans of the Corporation applicable to you
      and other peer  executives and their families as of the  Termination,  but
      which are in no event less favorable than the most favorable  plans of the
      Corporation applicable to you and other peer executives and their families
      during the 90-day  period  immediately  before the Change of Control.  The
      cost to you of such  welfare  benefits  shall not  exceed the cost of such
      benefits to you immediately before the Termination or, if less, the Change
      of Control.  Notwithstanding  the foregoing,  if you are covered under any
      medical,  life, or disability  insurance  plan(s) provided by a subsequent
      employer,  then the amount of  coverage  required  to be  provided  by the
      Corporation  hereunder shall be secondary to the coverage  provided by the
      subsequent employer's medical, life, or disability insurance plan(s). Your
      rights under this  paragraph  shall be in addition to, and not in lieu of,
      any  post-termination  continuation  coverage or conversion rights you may
      have pursuant to applicable law, including without limitation continuation
      coverage required by Section 4980B of the Code and Section 601 et. seq. of
      the Employee Retirement Income Security Act of 1974, as amended.

            5. EMPLOYEE STOCK OPTIONS. Upon a Change of Control, the Corporation
      shall pay to you a lump-sum  cash payment equal to the spread (fair market
      value over exercise price) of all  outstanding  options granted to you for
      shares of common stock of Safety-Kleen whether vested or not vested at the
      time of the Change of Control.

            6. LEGAL COUNSEL FEES. If the Corporation  shall fail to comply with
      its obligations hereunder or call into question the legal validity of this
      Agreement, all reasonable legal counsel fees incurred by you in the course
      of seeking  to  enforce  this  Agreement  shall be for the  account of and
      payable  by the  Corporation,  except  to the  extent  that a court  shall
      determine  that your  action in  seeking  to enforce  this  Agreement  was
      frivolous.

            7. OUTPLACEMENT  EXPENSES. In the event that the Termination Payment
      shall become payable hereunder, the Corporation shall pay, on your behalf,
      the fees and  expenses of  "outplacement"  services  on your behalf  which
      shall have been arranged by you, to a maximum of $25,000.

                                       4
<PAGE>

            8. CONFIDENTIALITY AND NONCOMPETITION

            8.1  CONFIDENTIALITY.  You acknowledge  that it is the policy of the
      Corporation to maintain as secret and confidential all valuable and unique
      information and techniques acquired,  developed or used by the Corporation
      relating to their  business,  operations,  employees and customers,  which
      gives the  Corporation a competitive  advantage in the businesses in which
      the  Corporation is engaged  ("Confidential  Information").  You recognize
      that all such Confidential  Information is the sole and exclusive property
      of the Corporation,  and that disclosure of Confidential Information would
      cause damage to the Corporation. You agree that, except as required by the
      duties of your  employment  with the  Corporation and except in connection
      with enforcing your rights under this Agreement or if compelled by a court
      or  governmental  agency,  you  will  not,  without  the  consent  of  the
      Corporation,   disseminate   or  otherwise   disclose   any   Confidential
      Information  obtained  during your  employment with the Corporation for so
      long as such information is valuable and unique.

            8.2 NON-COMPETITION/ NON-SOLICITATION.

            a. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter for a period of one (1) year, you will not at any time directly
      or  indirectly,  in any  capacity,  engage  or  participate  in, or become
      employed  by or  render  advisory  or  consulting  or  other  services  in
      connection with any Prohibited Business as defined in Section 8.2(d).

            b. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter  for a period of one (1) year, you shall not make any financial
      investment,  whether in the form of equity or debt,  or own any  interest,
      directly  or  indirectly,  in any  Prohibited  Business.  Nothing  in this
      Section 8.2(b) shall, however,  restrict you from making any investment in
      any  company  whose stock is listed on a national  securities  exchange or
      actively  traded in the  over-the-counter  market;  provided that (1) such
      investment  does not give you the right or ability to control or influence
      the policy decisions of any Prohibited  Business,  and (2) such investment
      does not create a conflict of interest  between your duties  hereunder and
      your interest in such investment.

            c. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter  for a period of one (1) year,  you  shall not (1)  employ  any
      employee  of the  Corporation  or (2)  interfere  with  the  Corporation's
      relationship  with,  or endeavor to entice away from the  Corporation  any
      person, firm, corporation,

                                       5
<PAGE>

      or other business organization who or which at any time (whether before or
      after  the  date of your  termination  of  employment),  was an  employee,
      customer,  vendor or supplier of, or  maintained  a business  relationship
      with,  any  business of the  Corporation  which was  conducted at any time
      during  the  period  commencing  one  year  prior  to the  termination  of
      employment.

            d. For the purpose of this Section 8.2, "Prohibited  Business" shall
      be  defined as any entity and any  branch,  office or  operation  thereof,
      which is a direct and material competitor of the Corporation  wherever the
      Corporation does business, in the United States or abroad.

            8.3 REMEDY. You and the Corporation  specifically agree that, in the
      event that you shall  breach your  obligations  under this  Section 8, the
      Corporation will suffer irreparable injury and no adequate remedy for such
      breach,  and shall be  entitled  to  injunctive  relief  therefor,  and in
      particular,   without  limiting  the  generality  of  the  foregoing,  the
      Corporation  shall not be precluded  from pursuing any and all remedies it
      may have at law or in equity  for  breach of such  obligations;  provided,
      however,  that such  breach  shall not in any manner or degree  whatsoever
      limit, reduce or otherwise affect the obligations of the Corporation under
      this  Agreement,  and  in no  event  shall  an  asserted  breach  of  your
      obligations  under this  Section 8  constitute  a basis for  deferring  or
      withholding any amounts otherwise payable to you under this Agreement.

            9. TERM.  This  Agreement  shall  terminate  on the later of (a) the
      third  anniversary  of the date  hereof  and (b) the  expiry of the Window
      Period in respect of the last Change in Control  which shall have occurred
      prior to the third anniversary of the date hereof.

            10. FINAL AGREEMENT.  It is the intention of the Corporation and you
      that the  compensation  and  benefits  to be  provided  to you under  this
      Agreement shall be the only  compensation  and benefits to you provided by
      the Corporation in the event of your  Termination of employment  following
      the Change in Control, and by your acceptance hereof, you hereby waive any
      and all other rights which you might have as a result of such  Termination
      of employment.

            11. NOTICE.  For purposes of this  Agreement,  notices and all other
      communications  shall be in writing and shall be hand  delivered and shall
      be deemed  given when  delivered  and received  addressed to  Safety-Kleen
      Corp.,  1301 Gervais Street,  Suite 300,  Columbia,  South Carolina 29201,
      Attention:  Vice  President,  Administration  or to you at the address set
      forth on the first  page of this  Agreement  or to such  other  address as
      either  party may have  furnished  to the other in writing  in  accordance
      herewith.

                                       6
<PAGE>

            12. GOVERNING LAW. This Agreement shall be governed by and construed
      in  accordance  with the laws of the  State of South  Carolina  applicable
      therein.

            13.   SEVERABILITY.   The  invalidity  or  unenforceability  of  any
      provision   of  this   Agreement   shall  not  effect  the   validity   or
      enforceability of any other provision of this Agreement which shall remain
      in full force and effect.

            14.  COUNTERPARTS.  This Agreement may be executed in  counterparts,
      each of which shall be deemed to be an original but both of which together
      shall constitute one and the same instrument.

            15. NO CONTRACT OF EMPLOYMENT.  Nothing in this  Agreement  shall be
      construed as giving you any right to be retained in the  employment of the
      Corporation.

      If the foregoing  sets forth our agreement on the subject  matter  hereof,
   kindly sign in the space  provided  below and return to the Vice President of
   Administration of the Corporation for execution by the Corporation. One fully
   executed copy of this Agreement shall be returned to you.

                                            SAFETY-KLEEN CORP.


                                            By:----------------------
                                            Kenneth W. Winger
                                            President & Chief Executive Officer



                                            SAFETY-KLEEN SERVICES, INC.


                                            By:-----------------------
                                            Kenneth W. Winger
                                            President


Agreed to this ----- day of
- -------------- , 2000


- ------------------------
(FirstName) (LastName)
                                        7




Private and Confidential

(Title) (FirstName) (LastName)
(Address1)
(City)  (State)  (PostalCode)

Dear (FirstName):

      Safety-Kleen  Corp.   ("Safety-Kleen")  and  Safety-Kleen  Services,  Inc.
("Services"),  (Safety-Kleen,  Services,  and their  subsidiaries,  collectively
referred to herein, as the "Corporation")  consider it essential and in the best
interests of the  Corporation  and their  shareholders  to foster the continuous
employment of key management  personnel.  In this regard, the board of directors
of Safety-Kleen  (the "Board") has determined that  appropriate  steps should be
taken to reinforce and encourage the continued  attention and  dedication of the
members of senior management of the Corporation,  including  yourself,  to their
assigned  duties  without  distraction  in the  face of  potentially  disturbing
circumstances  arising from any possible  change in control of  Safety-Kleen  or
Services.

      In order to induce  you to remain in the  employ of the  Corporation,  the
Corporation  has agreed with you that you shall receive the  severance  benefits
set  forth  in this  letter  agreement  (this  "Agreement")  in the  event  your
employment with the Corporation is terminated  subsequent to a Change in Control
(as defined below) under the circumstances described below.

1. CHANGE IN CONTROL.  No benefits shall be payable hereunder unless there shall
   have been a "Change in Control", which, for purposes of this Agreement, shall
   mean the occurrence of any of the following:

            a. (X) any person (as such term is used in Rule  13(d)- 5 of the SEC
      under the 1934 Act) or group (as such term is defined in Section  13(d) of
      the 1934 Act),  other than a subsidiary  or any employee  benefit plan (or
      related trust) of Safety-Kleen  or its subsidiary,  becomes the beneficial
      owner of 15% or more of the  common  stock of  Safety-Kleen  or of  voting
      securities  representing  15% or more of the combined  voting power of all
      voting  securities  of  Safety-Kleen,  (Y) Laidlaw  Inc.  ceases to be the
      beneficial owner,  directly or indirectly,  of 43.6% or more of the voting
      securities  of  Safety-Kleen  and (Z) another  person or group becomes the
      beneficial  owner of voting  securities of Safety-Kleen  which represent a
      larger number of voting securities than those held by Laidlaw Inc.
            b. within a period of 24 months or less, the individuals  who, as of
      any date,  constitute the Board (the "Incumbent  Directors") cease for any
      reason to constitute at least a majority of the Board unless at the end of
      such period,  the majority of

                                       1
<PAGE>

      individuals   then   constituting   the  Board  were  nominated  upon  the
      recommendation of a majority of the Incumbent Directors.
            c. the sale or other disposition of all or substantially  all of the
      assets of Safety-Kleen or Services.

            d. the sale or  other disposition by  Safety-Kleen of 50% or more of
            the voting  securities  of Services or any other  transaction  which
            results in any person,  other than  Safety-Kleen  or a subsidiary or
            any employee benefit plan of  Safety-Kleen,  becoming the beneficial
            owner of 50% or more of the voting securities of Services.

2.    TERMINATION  FOLLOWING  CHANGE IN CONTROL.  If a Change in Control shall
      have  occurred,  you shall be  entitled  to the  benefits  provided  for
      herein   upon   the   subsequent    termination   of   your   employment
      ("Termination")  during the period ("Window Period")  beginning upon the
      date of the  Change in  Control  and  ending  on the  third  anniversary
      thereof,   unless  such   Termination   is  because  of  your  death  or
      retirement,  by the  Corporation for Cause or by you other than for Good
      Reason.  For purposes of this paragraph:

            a.    "Cause" shall mean:

                  (I) the willful and continued  failure by you substantially to
                  perform your duties with the Corporation  (other than any such
                  failure  resulting  from your  incapacity  due to  physical or
                  mental  illness  or any such  actual  or  anticipated  failure
                  resulting  from  Termination  by  you  for  Good  Reason,   as
                  hereinafter  defined) after a written  demand for  substantial
                  performance  is  delivered  to you by the  Board or  executive
                  management  of  the  Corporation,  which  demand  specifically
                  identifies   the  manner  in  which  the  Board  or  executive
                  management believes that you have not substantially  performed
                  your duties and you failed to correct  such failure to perform
                  your  duties  within  30 days  after  such  written  demand is
                  delivered to you; or

                  (II)  the  willful   engaging  by  you  in  conduct   that  is
                  demonstrably  and  materially  injurious  to the  Corporation,
                  monetarily or otherwise,  and no act or failure to act on your
                  part shall be deemed  "willful"  unless done, or omitted to be
                  done, by you not in good faith and without  reasonable  belief
                  that your action or omission was in the best  interests of the
                  Corporation;

            b. "Good  Reason"  shall mean the  occurrence,  without your express
      written consent, of any of the following:

                  (I)  Inconsistent   Duties  -  a  meaningful  and  detrimental
                  alteration in your position or in the nature or status of your
                  responsibilities from those in effect immediately prior to the
                  Change in Control;

                  (II)   Reduction  in   Remuneration   -  a  reduction  by  the
                  Corporation   in  your   annual   base  salary  as  in  effect
                  immediately  prior to the  Change  in  Control  or at any time
                  during the Window Period; or a reduction by the Corporation in
                  long term incentive opportunity as in effect immediately prior
                  to the  Change in  Control;

                                       2
<PAGE>

 or at any time  during  the Window
                  Period; or a reduction by the Corporation in bonus opportunity
                  as in effect  immediately prior to the Change in Control or at
                  any time during the Window Period;

                  (III)  RELOCATION  - the  relocation  of  the  office  of  the
                  Corporation  where you are  employed at the time of the Change
                  in Control

                  ("the CIC  Location") to a location that is more than 40 miles
                  away from the CIC Location,  or the Corporation  requiring you
                  to be based  more  than 40 miles  away  from the CIC  Location
                  (except for required travel on the Corporation  business to an
                  extent  substantially  consistent with your customary business
                  travel  obligations  in the ordinary  course of your  business
                  during the year  immediately  prior to the Change in Control);
                  provided,   however,   your  relocation  to  Columbia,   South
                  Carodlina,   in   connection   with   the   consolidation   of
                  Safety-Kleen Corp. offices in Columbia,  S.C., such relocation
                  shall not constitute  Reason for  Termination by you and shall
                  not  entitle  you  to  the  Termination  Payment  (hereinafter
                  defined) in the event of your refusal to relocate.

                  (IV) BENEFITS AND PERQUISITES - the failure by the Corporation
                  to continue to provide you with  benefits and  perquisites  at
                  least as favorable as those enjoyed by you  immediately  prior
                  to the Change in Control as may be  increased  thereafter  and
                  prior to the expiry of the Window Period.

3.    TERMINATION  PAYMENT.  If any event of  Termination  shall have occurred
      during  the  Window  Period  and prior to the expiry of the Term of this
      Agreement,  and you shall have provided written notice to that effect to
      the  Corporation,  you shall be entitled to a payment ("the  Termination
      Payment")   in  a  lump  sum  (subject  to   mandatory   statutory   tax
      withholding) in the amount of twelve month's average  compensation  plus
      to the extent  not  previously  paid but  accrued,  through  the date of
      Termination,  vacation pay and salary.  Average compensation is equal to
      the average aggregate monthly salary,  bonus, and perquisites during the
      fiscal  year of the  Corporation  ended  immediately  prior  to the date
      ("Termination  Payment Date") on which the Termination  Payment shall be
      due provided,  however,  the average compensation shall not be less than
      the average  aggregate monthly salary,  bonus, and perquisites  received
      during the fiscal year ending August 31, 1999.


4.    CONTINUATION OF BENEFITS FOLLOWING TERMINATION
      For  twelve  months  following  the  Termination,  the  Corporation  shall
      continue to provide to you and your family  welfare  benefits  (including,
      without limitation, medical, prescription,  dental, disability, individual
      life, group life, accidental death and travel accident insurance plans and
      programs),  fringe benefits and other  perquisites,  which are at least as
      favorable as the most favorable plans of the

                                       3
<PAGE>

      Corporation applicable to you and other peer executives and their families
      as of the  Termination,  but which are in no event less favorable than the
      most favorable plans of the  Corporation  applicable to you and other peer
      executives and their families during the 90-day period  immediately before
      the Change of Control.  The cost to you of such welfare benefits shall not
      exceed the cost of such benefits to you immediately before the Termination
      or, if less, the Change of Control.  Notwithstanding the foregoing, if you
      are covered  under any medical,  life,  or  disability  insurance  plan(s)
      provided by a subsequent employer, then the amount of coverage required to
      be  provided  by the  Corporation  hereunder  shall  be  secondary  to the
      coverage  provided  by  the  subsequent   employer's  medical,   life,  or
      disability insurance plan(s). Your rights under this paragraph shall be in
      addition  to,  and  not in  lieu  of,  any  post-termination  continuation
      coverage or conversion  rights you may have  pursuant to  applicable  law,
      including  without  limitation  continuation  coverage required by Section
      4980B of the Code and  Section 601 et.  seq.  of the  Employee  Retirement
      Income Security Act of 1974, as amended.

 5.   EMPLOYEE STOCK OPTIONS.  Upon a Change of Control,  the Corporation  shall
      pay to you a lump-sum  cash payment equal to the spread (fair market value
      over exercise price) of all outstanding  options granted to you for shares
      of common stock of  Safety-Kleen  whether vested or not vested at the time
      of the Change of Control.

6.    LEGAL  COUNSEL  FEES.  If the  Corporation  shall fail to comply  with its
      obligations  hereunder or call into  question  the legal  validity of this
      Agreement, all reasonable legal counsel fees incurred by you in the course
      of seeking  to  enforce  this  Agreement  shall be for the  account of and
      payable  by the  Corporation,  except  to the  extent  that a court  shall
      determine  that your  action in  seeking  to enforce  this  Agreement  was
      frivolous.

7.    OUTPLACEMENT  EXPENSES.  In the event that the  Termination  Payment shall
      become payable  hereunder,  the Corporation shall pay, on your behalf, the
      fees and  expenses of  "outplacement"  services on your behalf which shall
      have been arranged by you, to a maximum of $25,000.

8.    CONFIDENTIALITY AND NONCOMPETITION

8.1   CONFIDENTIALITY.  You acknowledge that it is the policy of the Corporation
      to maintain as secret and confidential all valuable and unique information
      and techniques acquired,  developed or used by the Corporation relating to
      their  business,  operations,  employees  and  customers,  which gives the
      Corporation  a  competitive  advantage  in the  businesses  in  which  the
      Corporation is engaged  ("Confidential  Information").  You recognize that
      all such  Confidential  Information is the sole and exclusive  property of
      the  Corporation,  and that disclosure of Confidential  Information  would
      cause damage to the Corporation. You agree that, except as required by the
      duties of your  employment  with the  Corporation and except in connection
      with enforcing your rights

                                       4
<PAGE>

      under this  Agreement or if compelled by a court or  governmental  agency,
      you will not,  without  the  consent of the  Corporation,  disseminate  or
      otherwise  disclose  any  Confidential  Information  obtained  during your
      employment  with  the  Corporation  for so  long as  such  information  is
      valuable and unique.

8.2   NON-COMPETITION/ NON-SOLICITATION.

            a. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter for a period of one (1) year, you will not at any time directly
      or  indirectly,  in any  capacity,  engage  or  participate  in, or become
      employed  by or  render  advisory  or  consulting  or  other  services  in
      connection with any Prohibited Business as defined in Section 8.2(d).

            b. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter  for a period of one (1) year, you shall not make any financial
      investment,  whether in the form of equity or debt,  or own any  interest,
      directly  or  indirectly,  in any  Prohibited  Business.  Nothing  in this
      Section 8.2(b) shall, however,  restrict you from making any investment in
      any  company  whose stock is listed on a national  securities  exchange or
      actively  traded in the  over-the-counter  market;  provided that (1) such
      investment  does not give you the right or ability to control or influence
      the policy decisions of any Prohibited  Business,  and (2) such investment
      does not create a conflict of interest  between your duties  hereunder and
      your interest in such investment.

            c. You agree  that,  during the period of your  employment  with the
      Corporation  and,  if  your  employment  is  terminated  for  any  reason,
      thereafter  for a period of one (1) year,  you  shall not (1)  employ  any
      employee  of the  Corporation  or (2)  interfere  with  the  Corporation's
      relationship  with,  or endeavor to entice away from the  Corporation  any
      person, firm, corporation,  or other business organization who or which at
      any  time  (whether  before  or  after  the  date of your  termination  of
      employment),  was  an  employee,  customer,  vendor  or  supplier  of,  or
      maintained a business  relationship  with, any business of the Corporation
      which was  conducted  at any time  during the period  commencing  one year
      prior to the termination of employment.

            d. For the purpose of this Section 8.2, "Prohibited  Business" shall
      be  defined as any entity and any  branch,  office or  operation  thereof,
      which is a direct and material competitor of the Corporation  wherever the
      Corporation does business, in the United States or abroad.

8.3   REMEDY. You and the Corporation specifically agree that, in the event that
      you shall breach your  obligations  under this Section 8, the  Corporation
      will suffer irreparable injury and no adequate remedy for such breach, and
      shall be  entitled  to  injunctive  relief  therefor,  and in  particular,
      without  limiting the generality of the foregoing,  the

                                       5
<PAGE>

      Corporation  shall not be precluded  from pursuing any and all remedies it
      may have at law or in equity  for  breach of such  obligations;  provided,
      however,  that such  breach  shall not in any manner or degree  whatsoever
      limit, reduce or otherwise affect the obligations of the Corporation under
      this  Agreement,  and  in no  event  shall  an  asserted  breach  of  your
      obligations  under this  Section 8  constitute  a basis for  deferring  or
      withholding any amounts otherwise payable to you under this Agreement.

9.    TERM.  This  Agreement  shall  terminate  on the  later  of (a) the  third
      anniversary  of the date hereof and (b) the expiry of the Window Period in
      respect of the last Change in Control which shall have  occurred  prior to
      the third anniversary of the date hereof.

10.   FINAL  AGREEMENT.  It is the intention of the Corporation and you that the
      compensation and benefits to be provided to you under this Agreement shall
      be the only  compensation  and benefits to you provided by the Corporation
      in the event of your  Termination  of  employment  following the Change in
      Control, and by your acceptance hereof, you hereby waive any and all other
      rights which you might have as a result of such Termination of employment.

11.   NOTICE.   For  purposes  of  this  Agreement,   notices  and  all  other
      communications  shall be in  writing  and  shall be hand  delivered  and
      shall  be  deemed  given  when  delivered  and  received   addressed  to
      Safety-Kleen  Corp.,  1301 Gervais Street,  Suite 300,  Columbia,  South
      Carolina 29201, Attention:  Vice President,  Administration or to you at
      the  address  set forth on the first page of this  Agreement  or to such
      other  address  as  either  party  may have  furnished  to the  other in
      writing in accordance herewith.

12.   GOVERNING  LAW.  This  Agreement  shall be  governed by and  construed  in
      accordance  with  the  laws of the  State  of  South  Carolina  applicable
      therein.

13.   SEVERABILITY.  The invalidity or unenforceability of any provision of this
      Agreement  shall not effect the  validity or  enforceability  of any other
      provision of this Agreement which shall remain in full force and effect.

14.   COUNTERPARTS.  This  Agreement  may be executed in  counterparts,  each of
      which shall be deemed to be an original but both of which  together  shall
      constitute one and the same instrument.

15.   NO CONTRACT OF EMPLOYMENT. Nothing in this Agreement shall be construed as
      giving you any right to be retained in the employment of the Corporation.

      If the foregoing  sets forth our agreement on the subject  matter  hereof,
   kindly sign in the space  provided  below and return to the Vice President of
   Administration of the Corporation for execution by the Corporation. One fully
   executed copy of this Agreement shall be returned to you.

                                       6
<PAGE>

                                        SAFETY-KLEEN CORP.


                                        By:-------------------------
                                        Kenneth W. Winger
                                        President & Chief Executive Officer



                                       6
<PAGE>

                                        SAFETY-KLEEN SERVICES, INC.


                                        By:-------------------------
                                        Kenneth W. Winger
                                        President


Agreed to this ----- day of
- ---------------, 2000


- ------------------------
(FirstName) (LastName)

                                       7



                                Exhibit (10)(r)
                                 SAFETY-KLEEN
                    CHANGE OF CONTROL SEVERANCE AGREEMENT
                                     (name)

<PAGE>


                              TABLE OF CONTENTS
                                                                         Page
ARTICLE I. - PURPOSES                                                      1

ARTICLE II. - CERTAIN DEFINITIONS                                          1
      2.1   Accrued Obligations                                            1
      2.2   Agreement Term                                                 1
      2.3   Article                                                        2
      2.4   Beneficial owner                                               2
      2.5   Cause                                                          2
      2.6   Change of Control                                              2
      2.7   Code                                                           2
      2.8   Disability                                                     2
      2.9   Effective Date                                                 2
      2.10  Good Reason                                                    3
      2.11  Gross-up Payment                                               3
      2.12  Imminent Change of Control Date                                3
      2.13  IRS                                                            3
      2.14  1934 Act                                                       3
      2.15  Notice of Termination                                          3
      2.16  Plans                                                          3
      2.17  Policies                                                       3
      2.18  Post-Change Period                                             3
      2.19  SEC                                                            3
      2.20  Section                                                        3
      2.21  Subsidiary                                                     3
      2.22  Termination Date                                               4
      2.23  Termination Performance Period                                 4
      2.24   Voting Securities                                             4

ARTICLE III. - POST-CHANGE PERIOD PROTECTIONS                              4
      3.1   Position and Duties                                            4
      3.2   Compensation                                                   5
      3.3   Stock Options                                                  7

ARTICLE IV. - TERMINATION OF EMPLOYMENT                                    7
      4.1   Disability                                                     7
      4.2   Death                                                          8
      4.3   Cause                                                          8
      4.4   Good Reason                                                    8

ARTICLE V. - OBLIGATIONS OF THE COMPANY UPON TERMINATION                   9
      5.1   If by the Executive for Good Reason or by the Company
            Other Than for Cause or Disability                             9


<PAGE>

      5.2   If by the Company for Cause                                   11
      5.3   If by the Executive Other Than for Good Reason                11
      5.4   If by the Company for Disability                              11
      5.5   If upon Death                                                 11
      5.6   Joint and Several Obligation                                  12

ARTICLE VI. - NON-EXCLUSIVITY OF RIGHTS                                   12
      6.1   Waiver of Other Severance Rights                              12
      6.2   Other- Rights                                                 12

ARTICLE VII. - CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY                 12
      7.1   Gross-up for Certain Taxes                                    12
      7.2   Determination by the Executive                                13
      7.3   Additional Gross-up Amounts                                   13
      7.4   Gross-up Multiple                                             14
      7.5   Opinion of Counsel                                            14
      7.6   Amount Increased or Contested                                 14
      7.7   Refunds                                                       15
      7.8   Joint and Several Obligation                                  15

ARTICLE VIII. - EXPENSES AND INTEREST                                     16
      8.1  Legal Fees and Other Expenses                                  16
      8.2  Interest                                                       16
      8.3  Joint and Several Obligation                                   16

ARTICLE IX. - NO SET-OFF OR MITIGATION                                    16
      9.1  No Set-off by Company                                          16
      9.2  No Mitigation                                                  17

ARTICLE X. - CONFIDENTIALITY AND NON-COMPETITION                          17
      10.1  Confidentiality                                               17
      10.2  Non-competition/ Non-Solicitation                             17
      10.3  Remedy                                                        18

ARTICLE XI. - MISCELLANEOUS                                               18
      11.1  No Assignability                                              18
      11.2  Successors                                                    18
      11.3  Payments to Beneficiary                                       19
      11.4  Non-alienation of Benefits                                    19
      11.5  Severability                                                  19
      11.6  Amendments                                                    19
      11.7  Notices                                                       19
      11.8  Counterparts                                                  20
      11.9  Governing Law                                                 20
      11.10 Captions                                                      20


<PAGE>

      11.11 Tax Withholding                                               20
      11.12 No Waiver                                                     20
      11.13 Entire Agreement                                              20
      11.14 Cancellation                                                  20


<PAGE>


                                  SAFETY-KLEEN.

                      CHANGE OF CONTROL SEVERANCE AGREEMENT

      THIS  AGREEMENT  dated as of October 6, 1999,  is made among SAFETY- KLEEN
CORP.,  a  Delaware  corporation  having  its  principal  place of  business  in
Columbia,  South  Carolina  (the  "Company"),  SAFETY-KLEEN  SERVICES,  INC.,  a
Delaware  corporation having its principal place of business in Columbia,  South
Carolina  and  a  wholly  owned  subsidiary  of  the  Company  ("Services")  and
(FirstName) (LastName) (the "Executive"), a resident of (State).

      The  Company,  Services  and  the  Executive  agree  that  this  agreement
supersedes any prior agreement between any of them which  specifically  provides
benefits upon a change in control of the Company or Services,  and further agree
that, if benefits become payable to the Executive  pursuant to Article V hereof,
such benefits will be in lieu of any other severance or termination  benefits to
which the Executive  otherwise  would be entitled  under any other  severance or
termination plan, policy or arrangement of the Company or Services.

                                   ARTICLE I.
                                    PURPOSES

      The Board of  Directors  of the  Company  (the  "Board")  and the Board of
Directors of Services have  determined  that it is in the best  interests of the
Company and its  stockholders,  and of Services,  to assure that the Company and
Services  will  have  the  continued  service  of  the  Executive,  despite  the
possibility or occurrence of a change of control of the Company or Services. The
Board believes it is imperative to reduce the  distraction of the Executive that
would result from the personal  uncertainties  caused by a pending or threatened
change of control, to encourage the Executive's full attention and dedication to
the Company and Services,  and to provide the Executive  with  compensation  and
benefits   arrangements   upon  a  change  of  control  which  ensure  that  the
expectations of the Executive will be satisfied and are  competitive  with those
of  similarly-situated  corporations.  This  Agreement is intended to accomplish
these objectives.

                                ARTICLE II.
                            CERTAIN DEFINITIONS

     When used in this  Agreement,  the terms  specified  below  shall  have the
following meanings:

      2.1     "Accrued Obligations" -- see Section 5.3.

      2.2  "Agreement  Term"  means the  period  commencing  on the date of this
Agreement and ending on the date which is twelve (12) months  following the date
that both



                                                                               1
<PAGE>

the  Company and  Services  give  notice of  cancellation  pursuant to
Section 11.14 hereof (the  "Expiration  Date");  provided,  however,  that if an
Imminent  Change of Control Date occurs  before the  Expiration  Date,  then the
Agreement Term shall automatically  extend to a date which is twelve (12) months
after the date of the Imminent  Change of Control  Date:  and provided  further,
that if a Change of Control  occurs before the  Expiration  Date, the Expiration
Date shall automatically be extended to the last day of the Post-Change Period.

      2.3 "Article" means an article of this Agreement.

      2.4 "Beneficial owner" means such term as defined in Rule 13d-3 of the SEC
under the 1934 Act.

      2.5   "Cause" - see Section 4.3(b).

      2.6 "Change of Control" means,  except as otherwise  provided  below,  the
occurrence of any of the following:

            a. (X) any person (as such term is used in Rule  13(d)- 5 of the SEC
      under the 1934 Act) or group (as such term is defined in Section  13(d) of
      the 1934 Act),  other than a Subsidiary  or any employee  benefit plan (or
      related  trust) of the Company or a  Subsidiary,  becomes  the  beneficial
      owner of 15% or more of the  common  stock  of the  Company  or of  Voting
      Securities  representing  15% or more of the combined  voting power of all
      Voting  Securities  of the  Company,  (Y)  Laidlaw  Inc.  ceases to be the
      beneficial owner,  directly or indirectly,  of 43.6% or more of the Voting
      Securities  of the  Company and (Z)  another  person or group  becomes the
      beneficial  owner of Voting  Securities of the Company  which  represent a
      larger number of Voting Securities than those held by Laidlaw Inc.
            b. within a period of 24 months or less, the individuals  who, as of
      any date,  constitute the Board (the "Incumbent  Directors") cease for any
      reason to constitute at least a majority of the Board unless at the end of
      such period,  the majority of individuals then constituting the Board were
      nominated  upon  the   recommendation  of  a  majority  of  the  Incumbent
      Directors.
            c. the sale or other  disposition of all or  substantially  all
      of the assets of the Company or Services.
            d. the sale or other  disposition  by the  Company of 50% or more of
      the Voting  Securities of Services or any other  transaction which results
      in any person,  other than the  Company or a  subsidiary  or any  employee
      benefit plan of the Company,  becoming the beneficial owner of 50% or more
      of the Voting Securities of Services.

      2.7 "Code" means the Internal Revenue Code of 1986, as amended.

      2.8 "Disability" -- see Section 4.1(b).



                                                                               2
<PAGE>

      2.9  "Effective  Date"  means the first  date on which a Change of Control
occurs  during the Agreement  Term.  Despite  anything in this  Agreement to the
contrary,  if the  Company or Services  terminates  the  Executive's  employment
before  the  date  of a  Change  of  Control,  and if the  Executive  reasonably
demonstrates  that such  termination  of employment  (a) was at the request of a
third party who had taken steps  reasonably  calculated  to effect the Change of
Control or (b) otherwise  arose in connection with or anticipation of the Change
of Control,  then "Effective  Date" shall mean the date  immediately  before the
date of such termination of employment.

      2.10 "Employer"  means whichever of the Company or Services is the primary
common-law employer of the Executive at the relevant time.

      2.11 "Good Reason" -- see Section 4.4(b).

      2.12 "Gross-up Payment" -- see Section 7.1.

      2.13 "Imminent  Change of Control Date" means any date on which occurs (a)
a presentation to the Company's  stockholders  generally or any of the Company's
directors or executive  officers of a proposal or offer for a Change of Control,
or (b) the public announcement (whether by advertisement,  press release,  press
interview, public statement, SEC filing or otherwise) of a proposal or offer for
a Change of  Control,  and in case of either (a) or (b) such  proposal  or offer
remains effective and unrevoked.

      2.14 "IRS" means the Internal Revenue Service.

      2.15  "1934 Act" means the Securities Exchange Act of 1934.

      2.16 "Notice of  Termination"  means a written  notice given in accordance
with  Section 11.7 which sets forth (a) the  specific  termination  provision in
this  Agreement  relied upon by the party giving such notice,  (b) in reasonable
detail the facts and circumstances claimed to provide a basis for termination of
the  Executive's  employment  under such  termination  provision  and (c) if the
Termination  Date  is  other  than  the  date  of  receipt  of  such  Notice  of
Termination, the Termination Date.

      2.17 "Plans" means plans,  programs,  policies or practices of the Company
and Services.

      2.18 "Policies" means policies, practices or procedures of the Company and
Services.

      2.19  "Post-Change  Period"  means the period  commencing on the Effective
Date and ending on the third anniversary of such date.

      2.20 "SEC" means the Securities and Exchange Commission.



                                                                               3
<PAGE>

      2.21 "Section" means, unless the context otherwise requires,  a section of
this Agreement.

      2.22 "Subsidiary"  means a corporation as defined in Section 424(f) of the
Code with the Company being treated as the employer  corporation for purposes of
this definition.

      2.23  "Termination  Date"  means  the date of  receipt  of the  Notice  of
Termination  or any later date specified in such notice (which date shall be not
more  than 15 days  after  the  giving  of such  notice),  as the  case  may be;
provided,   however,  that  (a)  if  the  Company  or  Services  terminates  the
Executive's employment other than for Cause or Disability,  then the Termination
Date shall be the date of receipt of such Notice of  Termination  and (b) if the
Executive's employment is terminated by reason of death or Disability,  then the
Termination  Date shall be the date of death of the Executive or the "Disability
Effective Date" (as defined in Section 4.1), as the case may be.

      2.24 "Termination Performance Period" - see Section 3.2(b)(2).

      2.25  "Voting  Securities"  of a  corporation  means  securities  of  such
corporation  that are entitled to vote generally in the election of directors of
such corporation.

                               ARTICLE III.
                      POST-CHANGE PERIOD PROTECTIONS

      3.1 Position and Duties.

            a. During the Post-Change Period, (1) the Executive's  position with
      the Company and  Services,  (in the case of a Change of Control  involving
      the  Company)  or with  Services  (in  the  case of a  Change  of  Control
      involving Services) (including offices, titles, reporting requirements and
      responsibilities),  authority and duties shall be at least commensurate in
      all material  respects with the most significant of those held,  exercised
      and assigned at any time during the 90-day period  immediately  before the
      Effective Date and (2) the Executive's  services shall be performed at the
      location where the Executive was employed immediately before the Effective
      Date or any other location less than 40 miles from such former location.

            b.  During  the  Post-Change  Period  (other  than  any  periods  of
      vacation,  sick leave or  disability  to which the Executive is entitled),
      the Executive  agrees to devote the Executive's full attention and time to
      the business  and affairs of the Company and  Services  and, to the extent
      necessary to discharge the duties  assigned to the Executive in accordance
      with this  Agreement,  to use the  Executive's  best  efforts  to  perform
      faithfully and efficiently such duties. During the Post-Change Period, the
      Executive  may (1)  serve on  corporate,  civic or  charitable  boards  or
      committees, (2) deliver lectures, fulfill speaking engagements or teach at
      educational  institutions and (3) manage personal investments,  so long as
      such  activities  are  consistent  with the  Policies  of the  Company  or
      Services at the Effective Date and do not significantly


                                                                               4
<PAGE>

      interfere  with the  performance  of the  Executive's  duties  under  this
      Agreement.  To the extent that any such  activities have been conducted by
      the  Executive  before the  Effective  Date and were  consistent  with the
      Policies of the Company and Services at the Effective  Date, the continued
      conduct of such  activities  (or  activities  similar in nature and scope)
      after  the  Effective  Date  shall not be  deemed  to  interfere  with the
      performance of the Executive's duties under this Agreement.

      3.2   Compensation.

            a. Base  Salary.  During the  Post-Change  Period,  the  Company and
      Services  shall pay or cause to be paid to the  Executive  an annual  base
      salary in cash ("Guaranteed Base Salary"), which shall be paid in a manner
      consistent   with  the  Company's  or  Services'  (as  applicable  to  the
      Executive)  payroll practices in effect  immediately  before the Effective
      Date at a rate at least equal to 12 times the highest  monthly base salary
      paid or payable to the Executive by the Company and Services in respect of
      the 12-month  period  immediately  before the Effective  Date.  During the
      Post-Change  Period, the Guaranteed Base Salary shall be reviewed at least
      annually and shall be increased at any time and from time to time as shall
      be substantially consistent with increases in base salary awarded to other
      peer  executives of the Company and  Services.  Any increase in Guaranteed
      Base Salary shall not limit or reduce any other  obligation of the Company
      and  Services  to the  Executive  under  this  Agreement.  After  any such
      increase,  the  Guaranteed  Base Salary  shall not be reduced and the term
      "Guaranteed Base Salary" shall thereafter refer to the increased amount.

            b. Target  Bonus.  During the  Post-Change  Period,  the Company and
      Services  shall  pay or cause  to be paid to the  Executive  a bonus  (the
      "Guaranteed  Bonus")  for each  Performance  Period  which ends during the
      Post-Change  Period.  "Performance  Period"  means  each  period  of  time
      designated  in  accordance  with any bonus  arrangement  of the Company or
      Services  ("Bonus Plan") which is based upon  performance  and approved by
      the Board or any committee of the Board.  The Guaranteed Bonus shall be at
      least equal to the greatest of:

            (1) the On Plan  Bonus,  which  shall mean the cash bonus  which the
            Executive  would  accrue  under any Bonus  Plan for the  Performance
            Period  for  which  the  Guaranteed   Bonus  is  awarded   ("Current
            Performance  Period") as if the  performance  achieved  100% of plan
            established pursuant to such Bonus Plan and the maximum level of the
            discretionary portion is achieved;

            (2) the  Actual  Bonus,  which  shall  mean  the  cash  bonus  which
            Executive  would  accrue  under  any  Bonus  Plan  for  the  Current
            Performance Period if the performance during the Current Performance
            Period were measured by actual performance;  provided, however, that
            for  purposes of Article V of this  Agreement,  the Actual Bonus for
            the Performance  Period in which the Termination  Date occurred (the
            "Termination  Performance  Period")  shall not be less than the cash
            bonus  which the  Executive  would  accrue  under any


                                                                               5
<PAGE>

            Bonus Plan if performance during that Termination Performance Period
            were  measured  by the actual  performance  during  the  Termination
            Performance Period before the Termination Date projected to the last
            day  of  such  Performance  Period  and  the  maximum  level  of the
            discretionary portion is achieved; and

             (3) the Historical Bonus,  which shall mean the greatest bonus that
            the  Executive  accrued  under any Bonus  Plan in the last three (3)
            Performance  Periods  that  ended  before  the  Post-Change  Period;
            provided, however, that for purposes of Article V of this Agreement,
            the  Historical  Bonus  for the  Performance  Period  in  which  the
            Termination Date occurred shall not be less than the cash bonus that
            the  Executive  accrued in the last  Performance  Period  that ended
            before the Termination Date.

            c.  Incentive,   Savings  and  Retirement   Plans.  In  addition  to
      Guaranteed  Base Salary and  Guaranteed  Bonus payable as provided in this
      Section,  the  Executive  shall be  entitled  to  participate  during  the
      Post-Change  Period in all  incentive  (including  long-term  incentives),
      savings and retirement  Plans  applicable to other peer  executives of the
      Company  and  Services,  but in no event  shall  such  Plans  provide  the
      Executive with incentive  (including  long-term  incentives),  savings and
      retirement benefits which are less favorable,  in the aggregate,  than the
      most  favorable  of those  provided  by the  Company  or  Services  to the
      Executive or to peer executives  under such Plans as in effect at any time
      during the 90-day period immediately before the Effective Date.

            d.  Welfare  Benefit  Plans.  During  the  Post-Change  Period,  the
      Executive and the Executive's  family shall be eligible to participate in,
      and receive all benefits  under,  welfare  benefit  Plans  provided by the
      Company and Services(including, without limitation, medical, prescription,
      dental,   disability,   individual  life,  group  life,   dependent  life,
      accidental  death and travel accident  insurance  Plans) and applicable to
      other peer executives of the Company and Services and their families,  but
      in no event shall such Plans provide  benefits  which in any case are less
      favorable, in the aggregate,  than the most favorable of those provided to
      the Executive or to peer  executives  under such Plans as in effect at any
      time during the 90-day period immediately before the Effective Date.

            e. Fringe  Benefits.  During the Post-Change  Period,  the Executive
      shall be entitled to fringe  benefits and other  executive  perquisites in
      accordance with the most favorable Plans  applicable to peer executives of
      the Company and Services,  but in no event shall such Plans provide fringe
      benefits  and  other  executive  perquisites  which  in any  case are less
      favorable, in the aggregate,  than the most favorable of those provided by
      the Company and Services to the Executive or to peer executives under such
      Plans in effect at any time during the 90-day  period  immediately  before
      the Effective Date.

                                                                               6
<PAGE>

            f. Expenses.  During the Post-Change  Period, the Executive shall be
      entitled  to prompt  reimbursement  of all  reasonable  employment-related
      expenses  incurred by the  Executive  upon the  Company's or Services' (as
      applicable)  receipt of accountings in accordance  with the most favorable
      Policies applicable to peer executives of the Company and Services, but in
      no event shall such Policies be less favorable, in the aggregate, than the
      most  favorable  of those  provided  by the  Company  and  Services to the
      Executive or to peer executives  under such Policies in effect at any time
      during the 90-day period immediately before the Effective Date.

            g. Office and Support  Staff.  During the  Post-Change  Period,  the
      Executive  shall be  entitled  to an office or  offices of a size and with
      furnishings and other appointments,  and to exclusive personal secretarial
      and  other  assistance  in  accordance  with the most  favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

            h. Vacation.  During the Post-Change  Period, the Executive shall be
      entitled to paid vacation in accordance  with the most favorable  Policies
      applicable to peer executives of the Company and Services, but in no event
      shall such Policies be less  favorable,  in the  aggregate,  than the most
      favorable of those  provided by the Company and Services to the  Executive
      or to peer executives under such Policies in effect at any time during the
      90-day period immediately before the Effective Date.

      3.3   Stock Options.

        In  addition to the other  benefits  provided  in this  Section,  on the
  Effective  Date,  the  Employer  shall pay to the  Executive  a lump-sum  cash
  payment  equal to the spread (fair market  value over  exercise  price) of all
  outstanding options granted to the Executive for shares of common stock of the
  Company whether vested or not vested on the Effective  Date.  Whichever of the
  Company and  Services  is not the  Employer,  shall be jointly  and  severally
  liable for the obligation of the Employer under this Section 3.3.

                                ARTICLE IV.
                         TERMINATION OF EMPLOYMENT

      4.1 Disability.

            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's  employment  upon the  Executive's  Disability  (as defined in
      Section  4.1(b)) by giving the Executive or his legal  representative,  as
      applicable,  (1) written  notice in  accordance  with  Section 11.7 of the
      Employer's  intention to terminate the Executive's  employment pursuant to
      this Section and (2) a certification  of the  Executive's  Disability by a
      physician  selected  by  the  Employer  or  its  insurers  and

                                                                               7
<PAGE>

      reasonably   acceptable  to  the  Executive  or  the   Executive's   legal
      representative.  The Executive's  employment shall terminate  effective on
      the 30th day (the  "Disability  Effective  Date")  after  the  Executive's
      receipt of such notice unless,  before the Disability  Effective Date, the
      Executive shall have resumed the full-time  performance of the Executive's
      duties.

            b. "Disability" means any medically  determinable physical or mental
      impairment  that has lasted for a  continuous  period of not less than six
      months and can be expected to be permanent or of indefinite duration.  and
      that  renders  the  Executive  unable to perform the  essential  functions
      required under this Agreement with or without reasonable accommodation.

      4.2 Death. The Executive's  employment shall terminate  automatically upon
      the Executive's death during the Post-Change Period.

      4.3   Cause.
            a. During the  Post-Change  Period,  the Employer may  terminate the
      Executive's employment for Cause.

            b.  "Cause"  means  any  of the  following:  (i)  conviction  of the
      Executive of, or the  Executive's  pleading  guilty or nolo contendere to,
      any  felony  which  includes  as an  element  of the crime a  premeditated
      intention  to commit the act,  (ii)  Executive's  inability to perform his
      duties due to habitual alcohol or drug addiction, (iii) serious misconduct
      involving dishonesty in the course of Executive's employment,  or (iv) the
      Executive's  habitual  neglect of his duties;  except that Cause shall not
      mean:

                  (1)   bad judgment or negligence other than habitual
                        neglect of duty;

                  (2) any act or  omission  believed  by the  Executive  in good
                  faith to have been in or not  opposed to the  interest  of the
                  Company and Services (without intent of the Executive to gain,
                  directly or  indirectly,  a profit to which the  Executive was
                  not legally entitled);

                  (3) any act or omission with respect to which a  determination
                  could  properly have been made by the Board that the Executive
                  met the applicable  standard of conduct for indemnification or
                  reimbursement  under the Company's or Services'  by-laws,  any
                  applicable  indemnification  agreement,  or applicable law, in
                  each case in effect at the time of such act or omission; or

                  (4) any act or  omission  with  respect  to  which  notice  of
                  termination  of employment of the Executive is given more than
                  12 months after the  earliest  date on which any member of the
                  Board, not a party to the act or omission, knew or should have
                  known of such act or omission.

                                                                               8
<PAGE>

            c. Any termination of the Executive's employment by the Employer for
      Cause shall be communicated to the Executive by a Notice of Termination.

      4.4   Good Reason.

            a. During the Post-Change Period, the Executive may terminate his or
      her employment for Good Reason.

            b. "Good Reason" means any of the following:

            (1) the  assignment to the Executive of any duties  inconsistent  in
            any  respect  with  the  Executive's  position  (including  offices,
            titles,  reporting  requirements or responsibilities),  authority or
            duties as contemplated by Section 3.1 (a)(1), or any other action by
            the Company or Services  which  results in a diminution  on or other
            material adverse change in such position, authority or duties;

            (2) any failure by the Company or Services to comply with any of the
            provisions of Article III;

            (3) the  Company's or Services'  requiring the Executive to be based
            at any office or  location  other  than the  location  described  in
            Section 3.1(a)(2);

            (4) any other material adverse change to the terms and conditions of
            the Executive's employment; or

            (5) any  purported  termination  by the Employer of the  Executive's
            employment other than as expressly  permitted by this Agreement (any
            such  purported  termination  shall not be  effective  for any other
            purpose under this Agreement).

      Any  reasonable  determination  of "Good Reason" made in good faith by the
Executive shall be conclusive.

            c. Any  termination  of  employment by the Executive for Good Reason
      shall be  communicated  to the  Employer  by a Notice  of  Termination.  A
      passage of time prior to delivery of a Notice of  Termination or a failure
      by the  Executive  to  include in the  Notice of  Termination  any fact or
      circumstance which contributes to a showing of Good Reason shall not waive
      any right of the Executive  under this Agreement or preclude the Executive
      from asserting such fact or  circumstance  in enforcing  rights under this
      Agreement.

                                ARTICLE V.
               OBLIGATIONS OF THE EMPLOYER UPON TERMINATION

                                                                               9
<PAGE>

      5.1 If by the Executive for Good Reason or by the Employer  Other Than for
Cause or  Disability.  If, during the  Post-Change  Period,  the Employer  shall
terminate Executive's  employment other than for Cause or Disability,  or if the
Executive  shall  terminate  employment  for Good  Reason,  the  Employer  shall
immediately pay the Executive, in addition to all vested rights arising from the
Executive's  employment  as specified in Article III, a cash amount equal to the
sum of the following amounts:

            a.    to the extent not previously paid, the Guaranteed Base
     Salary and any accrued vacation pay through the Termination Date;

            b. the  difference  between  (1) the  product of (A) the  Guaranteed
     Bonus,  multiplied by (B) a fraction,  the numerator of which is the number
     of days in the  Termination  Performance  Period which  elapsed  before the
     Termination  Date, and the denominator of which is the total number of days
     in the Termination Performance Period, and (2) the amount of any Guaranteed
     Bonus  previously  paid to the  Executive  with respect to the  Termination
     Performance Period;

            c. all amounts  previously  deferred by or an accrual to the benefit
     of the Executive under any  nonqualified  deferred  compensation or pension
     plan,  together with any accrued earnings thereon,  and not yet paid by the
     Company or Services;

            d. an amount equal to the product of (1) three (3) multiplied by (2)
      the sum of (A) the Guaranteed Base Salary and (B) the Guaranteed Bonus;

            e. an amount equal to the sum of the value of the  unvested  portion
     of the  Executive's  accounts or accrued  benefits under any qualified plan
     maintained by the Company or Services, as of the Termination Date;

            f. if the Company or Services  maintains  any  cash-based  long term
     incentive  bonus  plan or  arrangement,  an amount in  satisfaction  of the
     Company's or Services (as  applicable)  obligation to the  Executive  under
     such plan or arrangement  equal to the amount which would be payable to the
     Executive if (i) the Company or Services (as  applicable)  attained  target
     performance over the entire  performance  period and (ii) the Executive had
     remained employed during the entire performance period;

            g. pay Executive outplacement services, to a maximum of $25,000.

      Until the third  anniversary of the Termination Date or such later date as
  any Plan of the Company or Services may specify,  the Employer  shall continue
  to provide to the Executive and the provide to the Executive's  family welfare
  benefits  (including,  without  limitation,  medical,  prescription,   dental,
  disability,  individual life, group life, accidental death and travel accident
  insurance   plans  and  programs),   fringe   benefits  and  other   executive
  perquisites,  which are at least as favorable as the most  favorable  Plans of
  the Company and Services applicable to Executive and other peer executives and
  their  families  as of the  Termination  Date,  but which are in no event less
  favorable than the most favorable Plans of

                                                                              10
<PAGE>

  the Company and Services applicable to the Executive and other peer executives
  and their families during the 90-day period  immediately  before the Effective
  Date. The cost to the Executive of such welfare  benefits shall not exceed the
  cost of such benefits to the Executive immediately before the Termination Date
  or,  if less,  the  Effective  Date.  Notwithstanding  the  foregoing,  if the
  Executive is covered under any medical,  life, or disability insurance plan(s)
  provided by a subsequent employer,  then the amount of coverage required to be
  provided by the Employer hereunder shall be secondary to the coverage provided
  by the subsequent  employer's medical,  life, or disability insurance plan(s).
  The Executive's  rights under this Section shall be in addition to, and not in
  lieu of, any post-termination  continuation  coverage or conversion rights the
  Executive may have pursuant to applicable law,  including  without  limitation
  continuation  coverage  required by Section  4980B of the Code and Section 601
  et. seq. of the Employee Retirement Income Security Act of 1974, as amended.

      5.2  If by  the  Employer  for  Cause.  If  the  Employer  terminates  the
  Executive's employment for Cause during the Post-Change Period, this Agreement
  shall terminate  without further  obligation by the Employer to the Executive,
  other  than  the  obligation  immediately  to pay the  Executive  in cash  the
  Executive's  Guaranteed  Base Salary through the  Termination  Date,  plus the
  amount of any  compensation  previously  deferred by the  Executive,  plus any
  accrued vacation pay, in each case to the extent not previously paid.

      5.3 If by the  Executive  Other  Than for Good  Reason.  If the  Executive
  terminates  employment  during  the  Post-Change  Period  other  than for Good
  Reason,  Disability or death,  this Agreement shall terminate  without further
  obligations by the Employer,  other than the obligation immediately to pay the
  Executive  in cash all amounts  specified  in clauses  (a), (b) and (c) of the
  first  sentence  of  Section  5.1 (such  amounts  collectively,  the  "Accrued
  Obligations").

      5.4 If by the Employer for  Disability.  If the  Employer  terminates  the
  Executive's  employment  by reason of the  Executive's  Disability  during the
  Post-Change Period, this Agreement shall terminate without further obligations
  to the Executive, other than

            (a)   the Employer's obligation immediately to pay the
      Executive in cash all Accrued Obligations, and

            (b) the  Executive's  right after the  Disability  Effective Date to
      receive disability and other benefits at least equal to the greater of (1)
      those  provided under the most favorable  disability  Plans  applicable to
      peer  executives of the Company or Services in effect  immediately  before
      the  Termination  Date or (2)  those  provided  under  the most  favorable
      disability  Plans of the Company and Services in effect at any time during
      the 90-day period immediately before the Effective Date.

      5.5 If upon Death. If the  Executive's  employment is terminated by reason
  of the Executive's death during the Post-Change  Period,  this Agreement shall
  terminate without further obligations to the Executive's legal representatives
  under this Agreement, other than

                                                                              11
<PAGE>

  the obligation of the Employer  immediately to pay the  Executive's  estate or
  beneficiary  in  cash  all  Accrued  Obligations.  Despite  anything  in  this
  Agreement to the contrary, the Executive's family shall be entitled to receive
  benefits at least equal to the most favorable benefits provided by the Company
  and Services to the  surviving  families of peer  executives of the Company or
  Services under such Plans,  but in no event shall such Plans provide  benefits
  which  in each  case  are  less  favorable,  in the  aggregate,  than the most
  favorable of those provided by the Company and Services to the Executive under
  such Plans in effect at any time during the 90-day period  immediately  before
  the Effective Date.

      5.6 Joint and Several Obligation. Whichever of the Company and Services is
  not the Employer shall be jointly and severally  liable for the obligations of
  the Employer under this Article V.

                                ARTICLE VI.
                         NON-EXCLUSIVITY OF RIGHTS

      6.1 Waiver of Other Severance Rights. To the extent that payments are made
  to the  Executive  pursuant to Section 5.1, the  Executive  hereby  waives the
  right to receive  severance  payments under any other Plan or agreement of the
  Company or Services.

      6.2 Other  Rights.  Except as  provided  in Section  6.1 and in the second
  paragraph of this  Agreement,  this  Agreement  shall not prevent or limit the
  Executive's  continuing  or  future  participation  in  any  benefit,   bonus,
  incentive or other Plans,  provided by the Company or any of its  Subsidiaries
  and for which the Executive  may qualify,  nor shall this  Agreement  limit or
  otherwise  affect  such  rights  as the  Executive  may have  under  any other
  agreements  with the  Company or any of its  Subsidiaries.  Amounts  which are
  vested benefits or which the Executive is otherwise  entitled to receive under
  any Plan of the Company or any of its  Subsidiaries  and any other  payment or
  benefit  required by law at or after the Termination  Date shall be payable in
  accordance  with such Plan or applicable  law except as expressly  modified by
  this Agreement.

                               ARTICLE VII.
                CERTAIN ADDITIONAL PAYMENTS BY THE EMPLOYER

      7.1 Gross-up for Certain  Taxes.  If it is determined  (by the  reasonable
  computation of the Employer's independent auditors, which determinations shall
  be  certified  to by such  auditors  and set  forth in a  written  certificate
  ("Certificate")  delivered  to the  Executive)  that any  benefit  received or
  deemed received by the Executive from the Company or Services pursuant to this
  Agreement  or  otherwise  (collectively,  the  "Payments")  is or will  become
  subject to any excise tax under  Section  4999 of the Code or any  similar tax
  payable  under any  United  States  federal,  state,  local or other law (such
  excise tax and all such similar taxes collectively,  "Excise Taxes"), then the
  Employer shall,  immediately  after such  determination,  pay the Executive an
  amount (the "Gross-up Payment") equal to the product of

            (a) the amount of such Excise Taxes

                                                                              12
<PAGE>

  multiplied by

            (b) the Gross-up Multiple (as defined in Section 7.4).

      The  Gross-up  Payment is intended to  compensate  the  Executive  for the
  Excise Taxes and any federal,  state, local or other income or excise taxes or
  other taxes payable by the Executive with respect to the Gross-up Payment.

      The Executive or the Employer may at any time request the  preparation and
  delivery to the Executive of a Certificate. The Employer shall, in addition to
  complying with Section 7.2, cause all determinations and certifications  under
  the Article to be made as soon as reasonably  possible and in adequate time to
  permit  the  Executive  to prepare  and file the  Executive's  individual  tax
  returns on a timely basis.

      7.2   Determination by the Executive.

            a. If the  Employer  shall  fail to  deliver  a  Certificate  to the
      Executive (and to pay to the Executive the amount of the Gross-up Payment,
      if any)  within 14 days  after  receipt  from the  Executive  of a written
      request  for a  Certificate,  or if at any  time  following  receipt  of a
      Certificate the Executive  disputes the amount of the Gross-up Payment set
      forth therein, the Executive may elect to demand the payment of the amount
      which the  Executive,  in  accordance  with an  opinion  of counsel to the
      Executive  ("Executive  Counsel  Opinion"),  determines to be the Gross-up
      Payment. Any such demand by the Executive shall be made by delivery to the
      Employer  of  a  written  notice  which  specifies  the  Gross-up  Payment
      determined  by the Executive and an Executive  Counsel  Opinion  regarding
      such Gross-up Payment (such written notice and opinion  collectively,  the
      "Executive's  Determination").  Within  14  days  after  delivery  of  the
      Executive's  Determination to the Employer, the Employer shall either (1 )
      pay the  Executive  the  Gross-up  Payment  set  forth in the  Executive's
      Determination (less the portion of such amount, if any, previously paid to
      the  Executive  by  the  Employer)  or (2)  deliver  to  the  Executive  a
      Certificate  specifying the Gross-up Payment  determined by the Employer's
      independent  auditors,  together with an opinion of the Employer's counsel
      (" Employer Counsel Opinion"),  and pay the Executive the Gross-up Payment
      specified in such  Certificate.  If for any reason the  Employer  fails to
      comply with clause (2) of the  preceding  sentence,  the Gross-up  Payment
      specified in the  Executive's  Determination  shall be controlling for all
      purposes.

            b. If the  Executive  does not make a request  for, and the Employer
      does not deliver to the Executive, a Certificate,  the Employer shall, for
      purposes  of Section  7.3, be deemed to have  determined  that no Gross-up
      Payment is due.

      7.3 Additional Gross-up Amounts. If, despite the initial conclusion of the
Employer  and/or the  Executive  that certain  Payments  are neither  subject to
Excise Taxes nor

                                                                              13
<PAGE>

to be counted in determining  whether other Payments are subject to Excise Taxes
(any such item, a "Non-Parachute Item"), it is later determined (pursuant to the
subsequently-enacted  provisions  of the Code,  final  regulations  or published
rulings of the IRS, final judgment of a court of competent  jurisdiction  or the
Employer's independent auditors) that any of the Non-Parachute Items are subject
to Excise Taxes,  or are to be counted in  determining  whether any Payments are
subject to Excise Taxes, with the result that the amount of Excise Taxes payable
by the  Executive is greater than the amount  determined  by the Employer or the
Executive pursuant to Section 7.1 or 7.2, as applicable, then the Employer shall
pay the  Executive  an amount  (which  shall also be deemed a Gross-up  Payment)
equal to the product of

            (a)  the  sum of (1)  such  additional  Excise  Taxes  and  (2)  any
      interest,  fines,  penalties,  expenses  or other  costs  incurred  by the
      Executive  as a result of having  taken a position  in  accordance  with a
      determination made pursuant to Section 7.1

  multiplied by

              (b) the Gross-up Multiple.

      7.4 Gross-up Multiple.  The Gross-up Multiple shall equal a fraction,  the
numerator of which is one (1.0), and the denominator of which is one (1.0) minus
the sum,  expressed as a decimal fraction,  of the rates of all federal,  state,
local and other  income and other taxes and any Excise Taxes  applicable  to the
Gross-up Payment.  (If different rates of tax are applicable to various portions
of a Gross-up Payment, the weighted average of such rates shall be used.)

     7.5 Opinion of Counsel.  "Executive  Counsel Opinion" means a legal opinion
of  nationally  recognized  executive  compensation  counsel  that  there  is  a
reasonable basis to support a conclusion that the Gross-up Payment determined by
the  Executive has been  calculated  in accord with this Article and  applicable
law.  "Employer Counsel Opinion" means a legal opinion of nationally  recognized
executive compensation counsel that (a) there is a reasonable basis to support a
conclusion that the Gross-up  Payment set forth of the Certificate of Employer's
independent  auditors  has been  calculated  in  accord  with this  Article  and
applicable law, and (b) there is no reasonable  basis for the calculation of the
Gross-up Payment determined by the Executive.

     7.6 Amount Increased or Contested.  The Executive shall notify the Employer
in  writing  of any  claim  by the  IRS  or  other  taxing  authority  that,  if
successful,  would  require the payment by the  Employer of a Gross-up  Payment.
Such  notice  shall  include the nature of such claim and the date on which such
claim is due to be  paid.  The  Executive  shall  give  such  notice  as soon as
practicable,  but no later than 10  business  days,  after the  Executive  first
obtains actual knowledge of such claim;  provided,  however, that any failure to
give or delay in giving  such notice  shall  affect the  Employer's  obligations
under this Article only if and to the extent that such failure results in actual
prejudice to the Employer.  The Executive  shall not pay such claim less than 30
days after the Executive  gives such notice to the Employer (or, if sooner,  the
date on which  payment  of such  claim is due).  If the  Employer  notifies  the


                                                                              14
<PAGE>

Executive  in writing  before the  expiration  of such period that it desires to
contest such claim, the Executive shall:

            a.    give the Employer any information that it reasonably
      requests relating to such claim,

            b. take such action in connection  with contesting such claim as the
      Employer  reasonably  requests  in writing  from time to time,  including,
      without  limitation,  accepting legal  representation with respect to such
      claim by an attorney reasonably selected by the Employer,

            c.    cooperate  with the  Employer  in good faith to  contest  such
                  claim, and

            d.    permit the Employer to participate in any proceedings
      relating to such claim;

      provided, however, that the Employer shall bear and pay directly all costs
      and expenses  (including  additional  interest and penalties)  incurred in
      connection  with such contest and shall  indemnify  and hold the Executive
      harmless,  on an  after-tax  basis,  for any  Excise  Tax or  income  tax,
      including  related  interest  and  penalties,  imposed as a result of such
      representation  and payment of costs and  expenses.  Without  limiting the
      foregoing,  the Employer shall control all  proceedings in connection with
      such  contest  and, at its sole  option,  may pursue or forego any and all
      administrative  appeals,  proceedings,  hearings and conferences  with the
      taxing  authority  in respect of such claim and may,  at its sole  option,
      either direct the Executive to pay the tax claimed and sue for a refund or
      contest  the claim in any  permissible  manner.  The  Executive  agrees to
      prosecute  such  contest  to a  determination  before  any  administrative
      tribunal,  in a court of initial jurisdiction and in one or more appellate
      courts, as the Employer shall determine;  provided,  however,  that if the
      Employer directs the Executive to pay such claim and sue for a refund, the
      Employer shall advance the amount of such payment to the Executive,  on an
      interest-free  basis and shall  indemnify the  Executive,  on an after-tax
      basis,  for any Excise Tax or income tax,  including  related  interest or
      penalties, imposed with respect to such advance; and further provided that
      any extension of the statute of  limitations  relating to payment of taxes
      for the taxable year of the Executive with respect to which such contested
      amount is claimed to be due is limited  solely to such  contested  amount.
      The  Employer's  control of the  contest  shall be limited to issues  with
      respect to which a Gross-up Payment would be payable.  The Executive shall
      be  entitled  to settle or  contest,  as the case may be, any other  issue
      raised by the IRS or other taxing authority.

    7.7 Refunds. If, after the receipt by the Executive of an amount advanced by
the Employer  pursuant to Section 7.6, the Executive becomes entitled to receive
any refund  with  respect to such claim,  the  Executive  shall  (subject to the
Employer's  complying  with the  requirements  of Section 7.6)  promptly pay the
Employer the amount of such refund  (together

                                                                              15
<PAGE>

with any interest paid or credited thereon after taxes applicable thereto).  If,
after the  receipt  by the  Executive  of an  amount  advanced  by the  Employer
pursuant to Section 7.6, a determination is made that the Executive shall not be
entitled  to any refund  with  respect to such claim and the  Employer  does not
notify the  Executive  in writing  of its intent to contest  such  determination
before the  expiration  of 30 days after such  determination,  then such advance
shall be forgiven  and shall not be required to be repaid and the amount of such
advance  shall offset,  to the extent  thereof,  the amount of Gross-up  Payment
required to be paid.  Any contest of a denial of refund shall be  controlled  by
Section 7.6.

    7.8 Joint and Several  Obligation.  Whichever of the Company and Services is
not the Employer  shall be jointly and severally  liable for the  obligations of
the Employer  under this Article VII. In the event of any assertion of liability
under this  Section 7.8 against  whichever of the Company or Services is not the
Employer,  the party against which such  liability is asserted  shall succeed to
all of the rights and obligations of the Employer under Article VII.

                               ARTICLE VIII.
                           EXPENSES AND INTEREST

    8.1 Legal Fees and Other Expenses.

            a. If the Executive incurs legal, accounting and other fees or other
      expenses in a good faith effort to obtain  benefits  under this  Agreement
      (including,  without  limitation,  the  fees  and  other  expenses  of the
      Executive's  legal counsel and the  accounting and other fees and expenses
      in  connection  with the  delivery of the  Opinion  referred to in Article
      VII),  regardless  of  whether  the  Executive  ultimately  prevails,  the
      Employer shall reimburse the Executive on a monthly basis upon the written
      request for such fees and expenses to the extent not reimbursed  under the
      Company's and Services' officers and directors liability insurance policy,
      if any. The existence of any  controlling  case or controlling  regulatory
      law  which  is  directly  inconsistent  with  the  position  taken  by the
      Executive shall be evidence that the Executive did not act in good faith.

            b.  Reimbursement  of legal fees and expenses  shall be made monthly
      upon the written  submission of a request for reimbursement  together with
      evidence  that such fees and  expenses are due and payable or were paid by
      the  Executive.  If the Employer  shall have  reimbursed the Executive for
      legal fees and expenses and it is later  determined that the Executive was
      not acting in good faith, all amounts paid on behalf of, or reimbursed to,
      the Executive shall be promptly refunded to the Employer.

    8.2  Interest.  If the Employer does not pay any amount due to the Executive
under this  Agreement  within three days after such amount became due and owing,
interest shall accrue on such amount from the date it became due and owing until
the date of payment at a

                                                                              16
<PAGE>

annual rate equal to two percent (2.0%) above the base  commercial  lending rate
announced  by The Bank of America in effect  from time to time during the period
of such nonpayment.

      8.3 Joint and Several Obligation. Whichever of the Company and Services is
not the Employer  shall be jointly and severally  liable for the  obligations of
the Employer  under this Article  VIII.  The right of refund  referred to in the
last  sentence  of Section  8.1 b. shall  inure to  whichever  of the Company or
Services originally paid the reimbursement to the Executive.

                                ARTICLE IX.
                         NO SET-OFF OR MITIGATION

      9.1 No Set-off by Company or Services.  The  Executive's  right to receive
when due the payments and other  benefits  provided for under this  Agreement is
absolute,  unconditional  and  subject to no set-off,  counterclaim  or legal or
equitable defense.  Time is of the essence in the performance by the Company and
Services of their obligations under this Agreement.  Any claim which the Company
or  Services  may have  against  the  Executive,  whether  for a breach  of this
Agreement or otherwise,  shall be brought in a separate action or proceeding and
not as part of any action or proceeding  brought by the Executive to enforce any
rights against the Company or Services under this Agreement.

      9.2 No Mitigation.  The Executive  shall not have any duty to mitigate the
amounts  payable by the Company or Services  under this Agreement by seeking new
employment following  termination.  Except as specifically otherwise provided in
this  Agreement,  all amounts  payable  pursuant to this Agreement shall be paid
without  reduction  regardless of any amounts of salary,  compensation  or other
amounts  which may be paid or  payable  to the  Executive  as the  result of the
Executive's employment by another employer.

                                ARTICLE X.
                    CONFIDENTIALITY AND NON-COMPETITION

      10.1 Confidentiality.  Executive acknowledges that it is the policy of the
Company and its Subsidiaries to maintain as secret and confidential all valuable
and unique information and techniques acquired, developed or used by the Company
and its  Subsidiaries  relating to their  business,  operations,  employees  and
customers,  which gives the Company and its Subsidiaries a competitive advantage
in the  businesses  in  which  the  Company  and its  Subsidiaries  are  engaged
("Confidential  Information").  Executive  recognizes that all such Confidential
Information  is  the  sole  and  exclusive  property  of  the  Company  and  its
Subsidiaries, and that disclosure of Confidential Information would cause damage
to the Company and its  Subsidiaries.  Executive agrees that, except as required
by the duties of his  employment  with the Company and/or its  Subsidiaries  and
except in connection with enforcing the Executive's  rights under this Agreement
or if  compelled by a court or  governmental  agency,  he will not,  without the
consent of the  Company,  disseminate  or otherwise  disclose  any  Confidential
Information   obtained  during  his  employment  with  the  Company  and/or  its
Subsidiaries for so long as such information is valuable and unique.

                                                                              17
<PAGE>

      10.2     Non-competition/ Non-solicitation.

            a. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  will not at any time directly or  indirectly,  in any capacity,
      engage or  participate  in, or become  employed  by or render  advisory or
      consulting or other services in connection with any Prohibited Business as
      defined in Section 10.2(d).

            b. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive shall not make any financial investment,  whether in the form of
      equity  or debt,  or own any  interest,  directly  or  indirectly,  in any
      Prohibited  Business.  Nothing in this  Section  10.2(b)  shall,  however,
      restrict  Executive  from making any investment in any company whose stock
      is listed on a national  securities  exchange  or  actively  traded in the
      over-the-counter  market;  provided that (1) such investment does not give
      Executive  the  right or  ability  to  control  or  influence  the  policy
      decisions of any Prohibited  Business,  and (2) such  investment  does not
      create a conflict of interest  between  Executive's  duties  hereunder and
      Executive's interest in such investment.

            c. Executive  agrees that,  during the period of his employment with
      the Company  and/or its  Subsidiaries  and, if  Executive's  employment is
      terminated  for any  reason,  thereafter  for a  period  of one (1)  year,
      Executive  shall not (1) employ any  employee  of the  Company  and/or its
      Subsidiaries   or  (2)  interfere   with  the  Company's  or  any  of  its
      Subsidiaries'  relationship  with,  or  endeavor  to entice  away from the
      Company and/or its Subsidiaries any person,  firm,  corporation,  or other
      business  organization  who or which at any time (whether  before or after
      the date of  Executive's  termination  of  employment),  was an  employee,
      customer,  vendor or supplier of, or  maintained  a business  relationship
      with,  any  business  of the  Company  and/or its  Subsidiaries  which was
      conducted at any time during the period  commencing  one year prior to the
      termination of employment.

            d. For the purpose of this Section 10.2, "Prohibited Business" shall
      be  defined as any entity and any  branch,  office or  operation  thereof,
      which is a direct  and  material  competitor  of the  Company  and/ or its
      Subsidiaries  wherever the Company and/ or its Subsidiaries does business,
      in the United States or abroad.

      10.3 Remedy.  Executive  and the Company  specifically  agree that, in the
event that  Executive  shall  breach his  obligations  under this Article X, the
Company  and its  Subsidiaries  will suffer  irreparable  injury and no adequate
remedy for such breach, and shall be entitled to injunctive relief therefor, and
in particular,  without  limiting the  generality of the foregoing,  the Company
shall not be precluded  from pursuing any and all remedies it may have at law or
in equity for breach of such obligations;  provided,  however,  that such breach
shall not in any

                                                                              18
<PAGE>

manner or degree whatsoever limit, reduce or otherwise affect the obligations of
the Company and Services under this Agreement, and in no event shall an asserted
breach of the  Executive's  obligations  under this Article X constitute a basis
for  deferring or  withholding  any amounts  otherwise  payable to the Executive
under this Agreement.

                                ARTICLE XI.
                               MISCELLANEOUS

      11.1 No  Assignability.  This  Agreement is personal to the  Executive and
without  the prior  written  consent of the Company  and  Services  shall not be
assignable  by the Executive  otherwise  than by will or the laws of descent and
distribution. This Agreement shall inure to the benefit of and be enforceable by
the Executive's legal representatives.

      11.2  Successors.  This  Agreement  shall  inure to the  benefit of and be
binding upon the Company,  Services and their respective successors and assigns.
The Company and Services will require any successor (whether direct or indirect,
by purchase, merger,  consolidation or otherwise) to all or substantially all of
their  respective  businesses or assets to assume expressly and agree to perform
this  Agreement  in the same  manner and to the same  extent that the Company or
Services,  as applicable,  would be required to perform it if no such succession
had taken place.  Any successor to the business  and/or assets of the Company or
Services  which assumes or agrees to perform this Agreement by operation of law,
contract,  or otherwise  shall be jointly and severally  liable with the Company
and  Services  under this  Agreement  as if such  successor  were the Company or
Services, as applicable.

      11.3  Payments to  Beneficiary.  If the  Executive  dies before  receiving
amounts to which the Executive is entitled  under this  Agreement,  such amounts
shall be paid in a lump sum to the  beneficiary  designated  in  writing  by the
Executive, or if none is so designated, to the Executive's estate.

      11.4  Non-alienation  of Benefits.  Benefits  payable under this Agreement
shall not be subject in any manner to anticipation,  alienation, sale, transfer,
assignment, pledge, encumbrance,  charge, garnishment,  execution or levy of any
kind,  either  voluntary or  involuntary,  before actually being received by the
Executive,  and any such  attempt to dispose  of any right to  benefits  payable
under this Agreement shall be void.

      11.5 Severability. If any one or more articles, sections or other portions
of this  Agreement  are  declared by any court or  governmental  authority to be
unlawful  or  invalid,  such  unlawfulness  or  invalidity  shall  not  serve to
invalidate any article,  section or other portion not so declared to be unlawful
or invalid. Any article,  section or other portion so declared to be unlawful or
invalid  shall be  construed  so as to  effectuate  the  terms of such  article,
section or other portion to the fullest extent possible while  remaining  lawful
and valid.

                                                                              19
<PAGE>

      11.6 Amendments. Except as provided in Sections 2.2 and 11.14 hereof, this
Agreement shall not be altered, amended or modified except by written instrument
executed by the Company, Services and Executive.

      11.7 Notices.  All notices and other  communications  under this Agreement
shall be in  writing  and  delivered  by hand or by first  class  registered  or
certified mail, return receipt requested, postage prepaid, addressed as follows:

                        If to the Executive:
                        (First Name) (Last Name)
                        (Address)
                        (City) (State) (Postal Code)

                        If to the Company:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration



                                                                              20
<PAGE>



                        If to Services:
                        Safety-Kleen Services, Inc.
                        1301 Gervais Street, Suite 300
                        Columbia, South Carolina  29201
                        Attention: Vice President, Administration

or to such other  address as either  party shall have  furnished to the other in
writing.  Notice and communications shall be effective when actually received by
the addressee.

      11.8  Counterparts.  This  Agreement  may  be  executed  in  one  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together constitute one and the same instrument.

      11.9 Governing Law. This Agreement  shall be interpreted  and construed in
accordance  with the laws of the State of South  Carolina  without regard to its
choice of law principles.

      11.10  Captions.  The  captions  of this  Agreement  are not a part of the
provisions hereof and shall have no force or effect.

      11.11 Tax  Withholding.  The Company and Services  may  withhold  from any
amounts payable under this Agreement any federal,  state or local taxes that are
required to be withheld pursuant to any applicable law or regulation.

      11.12 No Waiver. The Executive's  failure to insist upon strict compliance
with any  provision  of this  Agreement  shall  not be  deemed a waiver  of such
provision or any other provision of this Agreement. A waiver of any provision of
this  Agreement  shall not be deemed a waiver  of any other  provision,  and any
waiver of any default in any such provision  shall not be deemed a waiver of any
later default thereof or of any other provision.

      11.13 Entire Agreement.  This Agreement contains the entire  understanding
of the  Company  and  Services  and the  Executive  with  respect to its subject
matter.

      11.14  Cancellation.  The Company and Services may, at any time prior to a
Change in Control,  unilaterally  cancel this Agreement on behalf of all parties
hereto by both of them (and not only one of them)  notifying  the  Executive  of
such  cancellation in writing at least twelve (12) months prior to the effective
date of the  cancellation,  provided  however  that no such  notice may be given
after an Imminent Change of Control Date.


                                                                              21
<PAGE>











            IN WITNESS  WHEREOF,  the  Executive,  Services and the Company have
executed this Agreement as of the date first above written.



                        -----------------------------------
                         (name) (the Executive)

                        SAFETY-KLEEN CORP.

                        By:--------------------------------
                        Kenneth W. Winger
                        President & Chief Executive Officer

                        SAFETY-KLEEN SERVICES, INC.

                        By:--------------------------------
                        Kenneth W. Winger
                        President

                                                                              22


                                  EXHIBIT 11

                               Safety-Kleen Corp.
                 Statement of Computation of Per Share Earnings
                     ($ in thousands, except per share data)
                                   (Unaudited)

                                                            Three Months Ended
                                                               November 30,
                                                           1999         1998

Basic:

   Income available to common stockholders ........     $  24,707    $ 27,772
                                                        =========    ========

   Weighted average common stock outstanding (000s)       100,637      87,844
                                                        =========    ========

   Basic income per share .........................     $    0.25    $   0.32
                                                        =========    ========


Diluted:

   Net income .....................................     $  24,707    $ 27,772
   Add back: interest expense on conversion of
     subordinated convertible debenture ...........           --        2,625
   Income available to common stockholders, plus
     assumed conversions ..........................     $  24,707    $ 30,397
                                                        =========    ========

   Weighted average common stock outstanding (000s)       100,637      87,844
   Dilutive effect of stock options ...............          --            65
   Dilutive effect of conversion of $350,000,000

     subordinated convertible debenture at $15.00 .          --        23,333
                                                        ---------    --------
   Diluted average shares outstanding .............       100,637     111,242
                                                        =========    ========

   Diluted income per share .......................     $ 0.25       $   0.27
                                                        =========    ========




                                   EXHIBIT 12

                               Safety-Kleen Corp.
                       Ratio of Earnings to Fixed Charges
                                ($ in thousands)
                                   (Unaudited)

                                                             Three Months Ended
                                                                 November 30
                                                               1999      1998

Income before income tax expense .........................   $43,926   $47,092
Add:
   Portions of rents representative of the interest factor     4,539     5,499
   Interest on indebtedness, including amortization of
     deferred financing charges ..........................    40,229    46,234
                                                             -------   -------
Income as adjusted .......................................   $88,694   $98,825
                                                             =======   =======

Fixed charges:

   Portions of rents representative of the interest factor   $ 4,539   $ 5,499
   Interest on indebtedness, including amortization of
     deferred financing charges ..........................    40,229    45,260
                                                             -------   -------
Total fixed charges ......................................   $44,768   $50,759
                                                             =======   =======

Ratio of earnings to fixed charges .......................     1.98x     1.95x


<TABLE> <S> <C>

<ARTICLE>                                                 5
<MULTIPLIER>                                                          1000

<S>                                                         <C>
<PERIOD-TYPE>                                             3-MOS
<FISCAL-YEAR-END>                                         AUG-31-2000
<PERIOD-START>                                            SEP-01-1999
<PERIOD-END>                                              NOV-30-1999
<CASH>                                                                5932
<SECURITIES>                                                             0
<RECEIVABLES>                                                       456666
<ALLOWANCES>                                                          9749
<INVENTORY>                                                          75117
<CURRENT-ASSETS>                                                    641091
<PP&E>                                                             3037079
<DEPRECIATION>                                                      439804
<TOTAL-ASSETS>                                                     4450142
<CURRENT-LIABILITIES>                                               402719
<BONDS>                                                                  0
                                                    0
                                                              0
<COMMON>                                                            100638
<OTHER-SE>                                                         1208184
<TOTAL-LIABILITY-AND-EQUITY>                                       4450142
<SALES>                                                             408481
<TOTAL-REVENUES>                                                    408481
<CGS>                                                                    0
<TOTAL-COSTS>                                                       325425
<OTHER-EXPENSES>                                                         0
<LOSS-PROVISION>                                                         0
<INTEREST-EXPENSE>                                                   40135
<INCOME-PRETAX>                                                      43926
<INCOME-TAX>                                                         19219
<INCOME-CONTINUING>                                                  24707
<DISCONTINUED>                                                           0
<EXTRAORDINARY>                                                          0
<CHANGES>                                                                0
<NET-INCOME>                                                         24707
<EPS-BASIC>                                                         0.25
<EPS-DILUTED>                                                         0.25




</TABLE>


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