SAFETY KLEEN CORP/
10-Q, 2000-04-14
HAZARDOUS WASTE MANAGEMENT
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                                  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 February 29, 2000


                         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        No  X
                                ----      ----
         The number of shares of the  issuer's  common stock  outstanding  as of
April 6, 2000 was 100,783,596.


<PAGE>

                                     Page 2

                                                SAFETY-KLEEN CORP.


                                      INDEX

PART I FINANCIAL INFORMATION......................................... 3


PART II  OTHER INFORMATION

Item 1   Legal Proceedings........................................... 3

Item 2   Changes In Securities And Use Of Proceeds................... 9

Item 3   Defaults Upon Senior Securities.............................10

Item 5   Other Events................................................10

Item 6   Exhibits and Reports on Form 8K.............................10

Signatures...........................................................16

Exhibit Index........................................................17



                                     Page 2
<PAGE>



                         PART I - FINANCIAL INFORMATION

         Due to the ongoing  internal  investigation  of the Company's  reported
financial  results and certain of its  accounting  policies  and  practices,  as
announced  by the  Company  on March 6, 2000,  the  Company is unable to prepare
financial  statements  for the quarter ended February 29, 2000 at this time. The
Company will file amended reports as soon as practicable.

                           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 February 29,
2000,  subsidiaries  of the Company were  involved in three  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


                                     Page 3
<PAGE>

damage.  At February  29,  2000,  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.

SAFETY-KLEEN (PINEWOOD), INC. FINANCIAL ASSURANCE

         The Company's  report on this matter  contained in the Company's Report
on Form 10-K for the twelve months ended August 31, 1999 is incorporated  herein
by  reference  thereto.  In its May 19, 1994 order DHEC  established  Pinewood's
permitted  capacity at 2250 acre feet and  determined  that from the date of the
order all wastes  disposed,  hazardous and  non-hazardous,  would be included in
determining  the  exhaustion  of  permitted  capacity  and  non-hazardous  waste
disposed  prior to the May 19,  1994  order  would  not be  counted  toward  the
hazardous waste capacity. In June 1995, DHEC promulgated, and the South Carolina
legislature  approved,   regulations  (the  "Regulations")  governing  financial
assurance for environmental  cleanup and restoration  giving  owner/operators of
hazardous  waste  facilities the right to choose from among several  options for
providing financial assurance.  The options included insurance, a bond, a letter
of credit, a cash trust fund and a corporate guaranty with a financial test.

         As  previously  reported  in the  Company's  report  on Form 8-K  dated
January 19,  2000,  the South  Carolina  Court of Appeals  ("Court of  Appeals")
issued a decision on January 17, 2000. The Court of Appeals declared:

         1.       The  Regulations  invalid due to  insufficient  public  notice
                  during the  promulgation  procedure  and ordering  Pinewood to
                  immediately   comply   with  the  cash   financial   assurance
                  requirements of the May 19, 1994 DHEC Order. This decision, if
                  upheld,  would require a present cash payment of approximately
                  $70 million.

         2.       That  non-hazardous  and hazardous  waste volume count against
                  Pinewood capacity beginning with  the site's initial  disposal
                  of waste.  The  practical effect of the decision would  render
                  Pinewood  at  approximately  500 acre feet over its  permitted
                  capacity at this time, notwithstanding the fact that under the
                  DHEC  Board  Order,   Pinewood  was  prohibited  from  seeking
                  additional  capacity  until  it  was  within  three  years  of
                  exhaustion of presently  permitted  capacity.  Pinewood had at
                  least  four years  operation  remaining  under its  previously
                  determined  permitted  capacity at the time of the January 17,
                  2000 decision.

Pinewood  petitioned for a rehearing which was denied by the Court of Appeals in
its order dated April 4, 2000.

         The Company will appeal the case to the South  Carolina  Supreme Court.
To address  the  possibility  that no relief will be achieved in the state court
system, a strategy has been devised


                                     Page 4
<PAGE>

and a complaint  prepared to challenge the decision in Federal  Court,  upon the
theory  that South  Carolina's  imposition  of a cash fund  requirement  and its
interpretation  with  respect to  permitted  capacity  violates the Federal laws
and/or the United States Constitution. As a fall back position, the Company will
pursue the  promulgation of new regulations  identical to those declared invalid
by the  Court of  Appeals  and will  seek  additional  capacity  through  permit
modification proceedings before DHEC.

         The Stock Purchase Agreement among Rollins Environmental Services, Inc.
(now Safety-Kleen Corp.) and Laidlaw Inc. and Laidlaw Transportation, Inc. dated
February 6, 1997,  provides  that Laidlaw  Inc.  shall  maintain,  solely at its
expense,  until the tenth  anniversary  of the Closing Date (May 15, 1997),  the
financial  mechanism as may be permitted by the relevant  environmental  laws to
provide the required financial assurance for potential environmental cleanup and
restoration at the Pinewood facility.

         If none of the  challenges  to the  decision of the Court of Appeals is
successful,  enforcement  of the decision  could have a material  adverse impact
upon the Company's financial position.

MATTERS RELATED TO INVESTIGATION OF FINANCIAL RESULTS

         As  previously  reported in the  Company's  Current  Report on Form 8-K
dated March 6, 2000,  the Company  announced  that it had  initiated an internal
investigation  of its  prior  reported  financial  results  and  certain  of its
accounting  policies and practices  following  receipt by the Company's Board of
Directors of information  alleging possible  accounting  irregularities that may
have affected the  previously  reported  financial  results of the Company since
fiscal year 1998. The Board has appointed a Special Committee, consisting solely
of four independent  outside  directors of the Company,  to conduct the internal
investigation, and has engaged the law firm Shaw Pittman and the accounting firm
Arthur  Andersen  LLP to assist with the  comprehensive  investigation  of these
matters.  Pending  the outcome of the  investigation,  the Board also has placed
Kenneth W. Winger, the Company's Chief Executive Officer and a Director, Michael
J. Bragagnolo,  Executive Vice President and Chief Operating Officer and Paul R.
Humphreys,   Sr.  Vice  President  of  Finance  and  Chief   Financial   Officer
(collectively  referred to as the "Individual  Defendants"),  on  administrative
leave.

         Between March 6 and 30, 2000, various Company  shareholders (the "Class
Members")  filed actions in the United States District Court for the District of
South Carolina,  on behalf of various  alleged  classes of Company  shareholders
(the "Federal Class Actions"), asserting federal securities fraud claims against
the  Company,  the  Individual   Defendants  (the  Company  and  the  Individual
Defendants  collectively  referred to as the "Defendants") and in one case James
R. Bullock, former Chairman of the Board of the Company ("Bullock"). The Federal
Class Actions are as follows:


                                     Page 5
<PAGE>
<TABLE>
<CAPTION>

   No.                     CASE NAME                         COURT             DOCKET #          DATE OF      CLASS PERIOD
                                                                                                 FILING

  <S>      <C>                                        <C>                   <C>                    <C>         <C>

   1.      Rachel Samet, Individually and on Behalf   United States         3:00-0739-10           3/7/00      7/7/98 - 3/6/00
           of all others Similarly Situated vs.       District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Paul R. Humphreys and Michael Bragagnolo

   2.      Jack Forrest, on behalf of himself and     United States         3:00-736               3/7/00
           all other similarly situated vs.           District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Michael J. Bragagnolo and Paul R.
           Humphreys

   3.      Kenneth Steiner, Individually and on       United States         3:00-0750-10           3/8/00      5/4/98 - 3/6/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys, Michael
           Bragagnolo and James R. Bullock

   4.      D. Scott Kelley, Individually and on       United States         3:00-0748-10           3/8/00      7/7/98 - 3/6/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys and Michael
           Bragagnolo

   5.      Izidor Klein, Individually and on Behalf   United States         3:00-749-17            3/8/00      7/7/98 - 3/6/00
           of all other Similarly Situated v.         District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Michael Bragagnolo and Paul R. Humphreys

   6.      Michael Potts, Individually and on         United States         3:00-0769-17           3/9/00      7/7/98 - 3/6/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys and Michael
           Bragagnolo


                                     Page 6
<PAGE>


   No.                     CASE NAME                         COURT             DOCKET #          DATE OF      CLASS PERIOD
                                                                                                 FILING

   7.      Jerry Krim and Hirsch Weber,               United States         3:00-0768-17           3/9/00      7/7/98 - 3/6/00
           Individually and on Behalf of all others   District Court
           Similarly Situated vs. Safety-Kleen        (Columbia Division)
           Corp., Kenneth W. Winger, Paul R.
           Humphreys and Michael Bragagnolo

   8.      Faye Scher, Individually and on Behalf     United States         3:00-0791-17           3/13/00     7/7/98 - 3/6/00
           of all others Similarly Situated vs.       District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Paul R. Humphreys and Michael Bragagnolo

   9.      Maurice Suede, Individually and on         United States         3:00-0792-17           3/13/00     10/6/98 - 3/3/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys and Michael
           Bragagnolo

   10.     Myron H. Smith, Individually and on        United States         3:00-0829-17           3/15/00     7/7/98 - 3/6/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys and Michael
           Bragagnolo

   11.     Frank A. Riccobono, Individually and on    United States         3:00-0866-17           3/20/00     7/7/98 - 3/3/00
           Behalf of all others Similarly Situated    District Court
           vs. Safety-Kleen Corp., Kenneth W.         (Columbia Division)
           Winger, Paul R. Humphreys and Michael
           Bragagnolo

   12.     Michael Schmeling, on behalf of himself    United States         3:00-875               3/20/00     7/9/97 - 3/6/00
           and all other similarly situated vs.       District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Michael J. Bragagnolo and Paul R.
           Humphreys


                                     Page 7
<PAGE>


   No.                     CASE NAME                         COURT             DOCKET #          DATE OF      CLASS PERIOD
                                                                                                 FILING

   13.     Joseph Lyons, on behalf of himself and     United States         3:00-996               3/29/00     7/7/98 - 3/6/00
           all other similarly situated vs.           District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Michael J. Bragagnolo and Paul R.
           Humphreys

   14.     John Ulrich, on behalf of himself and      United States         3:00-1005              3/30/00     10/6/98 - 3/3/00
           all others similarly situated vs.          District Court
           Safety-Kleen Corp., Kenneth W. Winger,     (Columbia Division)
           Michael J. Bragagnolo and Paul R.
           Humphreys

</TABLE>


         The  significant  part of these  actions  brought  on behalf of various
putative  classes of  purchasers of Company  securities  between May 4, 1998 and
March 6,  2000 (the  "Class  Periods")  is the  allegation  that the  Defendants
disseminated  materially false and misleading information and failed to disclose
material  facts with respect to the Company's  financial  condition and business
prospects,  thereby  causing  the  market  price  of  Company  securities  to be
artificially  inflated  during  the Class  Periods  and that the  Class  Members
acquired Company  securities  during the Class Periods at artificially  inflated
prices and were damaged thereby.

         The Federal Class Actions assert various  violations of securities laws
including  violations of Sections 10(b) and 20(a) of the Securities Exchange Act
of 1934 and Rules 10b-5 and 14a-9  promulgated  under the Exchange Act, Sections
11,  12(a)(2) and 15 of the  Securities Act of 1933. The claims under Section 15
of the  Securities  Act of 1933 and 20(a) of the Exchange Act have been asserted
against the Individual Defendants, and in once case Bullock, but not against the
Company.  These actions seek to recover  damages in an unspecified  amount which
the Class  Members  allegedly  sustained by  purchasing  Company  securities  at
artificially  inflated prices,  as well as related relief.  As of April 7, 2000,
the Company had not received  copies of the  Complaints in cases  numbered 2, 12
and 13.  Allegations  and causes of action may be contained in these cases which
are not included in this disclosure.

         In addition to the above,  two  shareholder  derivative  lawsuits  were
filed in the Delaware  Court of Chancery for New Castle  County on behalf of the
Company,  against  certain of its directors and former  directors (the "Delaware
Derivative  Actions"):  (1) Civil Action No. 17923-NC on March 24, 2000, pending
under the caption Peter Frank, Plaintiff vs. Kenneth W. Winger, John W. Rollins,
James R. Bullock,  David E. Thomas,  Jr.,  Leslie W.  Haworth,  Henry B. Tippie,
James L. Wareham, John W. Rollins, Jr., Robert W. Luba and Grover C. Wren (sic),
Defendants  (the  "Director   Defendants")  and  Safety-Kleen   Corp.   (Nominal
Defendant) and (2) Civil Action No. 1974-NC on March 30, 2000, pending under the
caption Harbor Finance Partners,  derivatively on behalf of Safety-Kleen  Corp.,
Plaintiff against James R. Bullock,  John W. Rollins, Sr., David E. Thomas, Jr.,
Kenneth W. Winger, Leslie W. Haworth, Henry B. Tippie,


                                     Page 8
<PAGE>


James L. Wareham,  John W. Rollins,  Jr., Robert W. Luba, Peter N.T. Widdrington
and Grover C. Wrenn, Defendants and Safety-Kleen Corp. (Nominal Defendant).  The
Delaware  Derivative  Actions assert,  inter alia, that the Director  Defendants
breached  their  fiduciary  obligations to the Company and its  Shareholders  by
failing  to  adequately  supervise  the  Company  and to  monitor  its  internal
financial  administrative  policies,  procedures  and controls  over an extended
period of time,  thereby  exposing the Company to class action  lawsuits and the
loss of  goodwill  in the  investment  community,  resulting  in  damages to the
Company and its shareholders.  These claims seek to recover damages on behalf of
the Company against the Director  Defendants in an unspecified amount as well as
related relief.

         It is  anticipated  that  other  lawsuits  similar  in  nature  to  the
previously disclosed lawsuits may be filed.

         Shortly  after  the  Company's  March  6,  2000  announcement,  Company
representatives  met with officials of the  Securities  and Exchange  Commission
(the  "Commission")  and  advised  the  Commission  of  the  alleged  accounting
irregularities  and the  Company's  internal  investigation  with respect to the
allegations.  On March 10, 2000, the Company was advised that the Commission had
initiated a formal  investigation  of the Company.  Also on March 10, 2000,  the
Commission  issued a subpoena to the Company requiring the production of certain
financial  and  corporate  documents  relating  to the  preparation  of  Company
financial  statements,  reports and audits for Fiscal Years 1998,  1999 and 2000
and for other  various  documents  pertaining  to and  ancillary  to the alleged
accounting  irregularities.  The Company has obtained an indefinite extension of
time to respond to the Subpoena.

         On or about  March 22,  2000,  the  Company  was served with a subpoena
issued by a Grand  Jury  sitting  in the United  States  District  Court for the
Southern District of New York seeking production of the same documents described
in the Commission's  Subpoena.  The Company has obtained an indefinite extension
of time to respond to the Subpoena.

         The Company is cooperating with each of the investigations.

         Other than as herein reported there have been no additional significant
legal proceedings or any material changes in the legal proceedings  reported in
PART II, Item 3 of the Company's Report on Form 10-K for the twelve months ended
August 31, 1999.

ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS.

         (c) On January 5, 1999 the Company issued 6014  unregistered  shares of
common stock,  par value $1.00 per share.  On January 4, 2000 the Company issued
5621 unregistered  shares of Common Stock, par value $1.00 per share. The shares
were issued under the Non-Employee  Director Stock Plan,  pursuant to which each
non-employee  director  receives  50% of his  annual  remuneration  in shares of
Company common stock.

         The  Company  believes  that the  issuance of these  securities  to the
directors was exempt from the registration requirements of the Securities Act of
1933, as amended,  pursuant to section 4(2) thereof by virtue of the recipients'
status as directors of the Company.


                                     Page 9
<PAGE>


ITEM 3.  DEFAULTS UPON SENIOR SECURITIES.

         As  previously  announced  by the  Company  in a Form 8-K  filed by the
Company on March 13,  2000,  the  Company  is in default of certain  obligations
under the Amended and Restated Credit  Agreement dated as of April 3, 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. (the "Credit Facility").

ITEM 5.  OTHER EVENTS

         On April 14, 2000, the Company issued the press release filed with this
Quarterly  Report on Form 10-Q as Exhibit  99.1.  The  information  contained in
Exhibit 99.1 is incorporated by reference herein.

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


                                    Page 10

<PAGE>


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

(4)(c)  Second  Supplemental  Indenture  effective  as  of  May  7,  1999  among
Safety-Kleen Services, Inc., the Company, 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  Company's  Form  10-K  filed  October  29,  1999  and
incorporated herein by reference.

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

(4)(e)  Registration  Rights  Agreement  dated as of May 17,  1999  between  the
Company and TD  Securities,  NationsBanc  Montgomery  Securities LLC and Raymond
James &  Associates,  Inc.  filed as Exhibit  (4)(a) to the  Company'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
Company'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 Company'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 Company'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 Company's Form S-4  Registration  Statement No. 333-57587
filed June 24, 1998 and incorporated herein by reference.


                             Page 11
<PAGE>

(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 Company'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 Company'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 among the  Company,
Laidlaw  Transportation,  Inc. and Laidlaw Inc.,  the form of which was filed as
Exhibit B to Annex A to the  Company'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
Company'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  Company'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 Company'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 Company'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 Company'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 Company to
Westinghouse Electric  Corporation,  filed as Exhibit 4(n) to the Company's Form
10-Q for the Quarter ended May 31, 1997, and incorporated herein by reference.


                                    Page 12
<PAGE>

(4)(s) Letter dated May 7, 1999 from Toronto-Dominion  (Texas) Inc. (as assignee
of Westinghouse  Electric  Corporation) and agreed to by the Company 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 theCompany'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  Company  to   Westinghouse   Electric
Corporation),  filed as Exhibit 4(o) to the Company'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
among the Company,  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 Company's Form S-4 Registration Statement No. 333-82689
filed July 12, 1999 and incorporated herein by reference.

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

(4)(w) First Amendment to Rights Agreement,  dated as of March 17, 2000, between
Safety-Kleen  Corp. and Equiserve  Trust Company,  N.A. filed as Exhibit 99.1 to
the  Company's  Current  Report  on  Form  8-K  filed  on  March  17,  2000  and
incorporated herein by reference.

(4)(x) Letter Agreement,  dated October 12, 1999, between Safety-Kleen Corp. and
Laidlaw Inc.  filed as Exhibit 99.2 to the Company's  Current Report on Form 8-K
filed on March 17, 2000 and incorporated herein by reference.

(4)(y) Other instruments defining the rights of holders of nonregistered debt of
the Company  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 Company and its  subsidiaries.  The Company  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 the
Company,  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 Company's  Current Report on
Form 8-K filed on June 13, 1995 and incorporated herein by reference.


                                    Page 13
<PAGE>


(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  Company'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)  Company'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 Company's  1997 Stock Option Plan,  filed as Exhibit
(10)(g) to the  Company's  Form 10-Q dated  January  14,  2000 and  incorporated
herein by reference.

(10)(h)  Company'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  Company's  Director's  Stock Option Plan filed as
Exhibit  (10)(i)  to  the  Company's  Form  10-Q  dated  January  14,  2000  and
incorporated herein by reference.

(10)(j)  Stock  Purchase  Agreement  dated  February 6, 1997 among the  Company,
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) Company's U.S.  Supplemental  Executive Retirement Plan filed as Exhibit
10(g) to the  Company's  10-Q for the  quarter  ended  November  30,  1997,  and
incorporated herein by reference.

(10)(m)   Form of Change of Control Agreement A-12-22.

(10)(n)    Form of Change of Control Agreement A1 RB 11 30.

(10)(o)    Form of Change of Control Agreement A2-12-22.

(10)(p)    Form of Change of Control Agreement AAMB0120.


                                    Page 14
<PAGE>


(10)(q)    Form of Change of Control Agreement B-12-22.

(10)(r)     Form of Change of Control Agreement C-12-22.

(10)(s)     Form of Change of Control Agreement D-12-22.

99.1        Press Release of April 14, 2000

     (b)      Reports on Form 8-K.

i.   The Company  filed a Current  Report on Form 8-K on January 7, 2000,  which
     contained Item 5 related to the Company  announcing  operating  results for
     the first  quarter  ended  November 30, 1999 and also  releasing  financial
     information as part of an analysts' call.

ii.  The  Company  filed a Current  Report on Form 8-K on January 19, 2000 which
     contained Item 5 related to the Company  announcing  that the Company would
     appeal a  decision  of the South  Carolina  Court of  Appeals  relating  to
     various  financial  assurance,  capacity and other issues at its  Pinewood,
     South Carolina facility.

iii. The  Company  filed a Current  Report on Form 8-K on January 26, 2000 which
     contained Item 5 related to the Company announcing the resignation of James
     R. Bullock as Chairman of the Board of  Directors  and as a Director of the
     Company.

iv.  The  Company  filed a Current  Report on Form 8-K on February 9, 2000 which
     contained Item 5 announcing that the appointment of Peter N.T.  Widdrington
     to the Board of Directors and as Chairman of the Board.

v.   The Company  filed a Current  Report on Form 8-K on February 11, 2000 which
     contained  Item 5  announcing  that the Board of  Directors  of the Company
     disbanded the Special Committee formed September 13, 1999.


                                    Page 15
<PAGE>

                                   SIGNATURES

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

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


                                           /s/ Henry H. Taylor
                                         ------------------------
                                              Henry H. Taylor
                               Vice President, General Counsel and Secretary

                                           /s/ John G. McGregor
                                         ------------------------
                                              John G. McGregor
                                      Interim Chief Financial Officer

                                    Page 16

<PAGE>

                                  EXHIBIT INDEX


(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  Company'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 Company'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 Company'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 Company'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 Company'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 Company),  the Company, subsidiary guarantors
                 of the Company and The Bank of Nova Scotia Trust Company of New
                 York, as trustee  filed as Exhibit 4(b) to the  Company'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 Company, SK Europe, Inc.
                 and The Bank of Nova  Scotia  Trust  Company  of New  York,  as
                 trustee  filed as  Exhibit  (4)(f)  to the  Company's  Form S-4
                 Registration  Statement No.  333-82689  filed July 12, 1999 and
                 incorporated herein by reference.

(4)(c)           Second Supplemental Indenture effective as of May 7, 1999 among
                 Safety-Kleen Services, Inc., the Company, 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
                 Company's  Form 10-K filed  October 29,  1999 and  incorporated
                 herein by reference.


                                    Page 17
<PAGE>


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

(4)(e)           Registration  Rights Agreement dated as of May 17, 1999 between
                 Company and TD Securities,  NationsBanc  Montgomery  Securities
                 LLC and  Raymond  James &  Associates,  Inc.  filed as  Exhibit
                 (4)(a) to the  Company'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 Company'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
                 Company'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 Company'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 Company's Form S-4
                 Registration  Statement No.  333-57587  filed June 24, 1998 and
                 incorporated herein by reference.


                                    Page 18

<PAGE>


(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
                 Company'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
                 Company'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  among the
                 Company, Laidlaw  Transportation, Inc.  and Laidlaw  Inc.,  the
                 form  of  which  was filed  as  Exhibit  B  to  Annex A  to the
                 Company'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 Company'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  Company'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 Company'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 Company'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
                 Company's  Form 10-Q for the Quarter  ended May 31,  1997,  and
                 incorporated herein by reference.


                                    Page 19


<PAGE>


(4)(r)           Promissory Note dated  May 15, 1997 for  $60,000,000  from  the
                 Company to Westinghouse Electric Corporation,  filed as Exhibit
                 4(n) to the  Company'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  Company  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  Company'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
                 Company to Westinghouse Electric Corporation), filed as Exhibit
                 4(o) to the  Company'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 among the  Company, 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  Company's  Form S-4  Registration  Statement No.
                 333-82689  filed  July 12,  1999  and  incorporated  herein  by
                 reference.

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

(4)(w)           First Amendment to Rights Agreement,dated as of March 17, 2000,
                 between  Safety-Kleen  Corp. and Equiserve Trust Company,  N.A.
                 filed as Exhibit 99.1 to the Company's  Current  Report on Form
                 8-K  filed  on  March  17,  2000  and  incorporated  herein  by
                 reference.

(4)(x)           Letter Agreement, dated October 12, 1999, between  Safety-Kleen
                 Corp.  and Laidlaw Inc.  filed as Exhibit 99.2 to the Company's
                 Current  Report  on Form  8-K  filed  on  March  17,  2000  and
                 incorporated herein by reference.

(4)(y)           Other   instruments   defining   the   rights  of   holders  of
                 nonregistered  debt of the Company  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
                 Company and its  subsidiaries.  The Company 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  the  Company,  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.


                                    Page 20
<PAGE>


(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 Company'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 Company'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)          Company'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 Company's  1997 Stock Option Plan, filed as
                 Exhibit  (10)(g) to the  Company's  Form 10-Q dated January 14,
                 2000 and incorporated herein by reference.

(10)(h)          Company'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 Company's Director's Stock Option Plan filed
                 as Exhibit (10)(i) to the Company's Form 10-Q dated January 14,
                 2000 and incorporated herein by reference.


(10)(j)          Stock  Purchase  Agreement  dated  February 6, 1997  among  the
                 Company,  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.


                                    Page 21
<PAGE>


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

(10)(m)          Form of Change of Control Agreement A-12-22.

(10)(n)          Form of Change of Control Agreement A1 RB 11 30.

(10)(o)          Form of Change of Control Agreement A2-12-22.

(10)(p)          Form of Change of Control Agreement AAMB0120.

(10)(q)          Form of Change of Control Agreement B-12-22.

(10)(r)          Form of Change of Control Agreement C-12-22.

(10)(s)          Form of Change of Control Agreement D-12-22.

99.1             Press Release of April 14, 2000


                                     Page 22



                                Exhibit (10) (m)


                                  SAFETY-KLEEN
                      CHANGE OF CONTROL SEVERANCE AGREEMENT
                               FirstName LastName
                                                                  coc sk-a-12-22
<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



<PAGE>


               Other Than for Cause or Disability                          10
         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                                               12

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

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                                     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 5, 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 Bonus Plan if performance during that


                                                                               5
<PAGE>

         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, salary continuance,  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


                                                                               7
<PAGE>


immediately  before)  the  Effective  Date  (the  "Excess/Supplemental  Plans"),
irrespective  ofwhether  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 3.3.

                                   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
         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) if Executive
         has at least ten (10) years of service  with the Company or is 55 years
         of age or older,  Executive  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,   salary
         continuance,  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)


                                                                              11
<PAGE>

         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 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  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

  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
determining  whether any


                                                                              14
<PAGE>

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 determination, then such


                                                                              16
<PAGE>


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 this Article  VIII.  The right of refund  referred to in the
last  sentence  of Section  8.1 b. shall


                                                                              17
<PAGE>

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 NONCOMPETITION

         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.

                  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


                                                                              18
<PAGE>

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


                                                                              19
<PAGE>

                                   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.

         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:


                                                                              20
<PAGE>

                                    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 / Chief Executive Officer
                                                                          23


                                Exhibit (10) (n)


                                  SAFETY-KLEEN
                      CHANGE OF CONTROL SEVERANCE AGREEMENT
                                      Name

                                                              coc sk a1 rb 11 30
<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                                            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

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                                      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 5, 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 IL.

        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  accord-
ance 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,  zprograms,  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,   except  with  respect  to  the  Executive's  relocation  in
         connection with the consolidation of Safety-Kleen  offices in Columbia,
         S.C.,  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
                                                                               4
<PAGE>

         (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
         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
                                                                               5
<PAGE>

         (the "Termination  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, salary continuance,  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 Execu-
         tive  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 July 1, 1998. 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
         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 an d Services (without intent of the  Executive to gain,
                directly or indirectly, a profit to which the  Executive was not
                not legally entitled);

                    (3) any  act or omission with respect to  which a determina-
                tion 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 inconsis-
                tent 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 sum of (A) the Guaranteed Base Salary and (B) the Guaranteed
         Bonus;

                                                                              10
<PAGE>

                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  Resouces 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  July  1,  1998)  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) if Executive 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,   salary  continuance,
         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


                                                                              11
<PAGE>

         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 Executive's
family  shall  be  entitled  to  receive  benefits  at  least  equal to the most
favorable benefits

                                                                              12
<PAGE>

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 reason-
able 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

                                                                              13
<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 to be

                                                                              14

<PAGE>

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

                                                                              15
<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

                                                                              16
<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

                                                                              17
<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 NONCOMPETITION

         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.

                                                                              18
<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

                                                                              19
<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.

                                                                              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:

                                    Name
                                    Address
                                    City, State Zip

                                    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 understand-
ing 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 / Chief Executive Officer

                                                                              23


                                Exhibit (10) (o)

                                  SAFETY-KLEEN

                      CHANGE OF CONTROL SEVERANCE AGREEMENT

                                      Name

                                                                 coc sk-a2-12-22
<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                                11

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

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
         11.11  Tax Withholding                                             20



<PAGE>


         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
         reasonably


                                                                               7
<PAGE>


         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.


                                                                               9
<PAGE>

                                   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  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


                                                                              10
<PAGE>

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
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.


                                                                              11
<PAGE>


         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 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


                                                                              12
<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.


                                                                              13
<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


                                                                              14
<PAGE>

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,

                  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.


                                                                              15
<PAGE>


         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 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.


                                                                              16
<PAGE>


         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 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 NONCOMPETITION

         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


                                                                              17
<PAGE>


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.

                  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.


                                                                              18
<PAGE>


         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 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


                                                                              19
<PAGE>
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.

         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:

                                    Name
                                    Address
                                    City, State  Zip

                                    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.

                                    ---------------------------------
                                    First Name  Last Name

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

                                    SAFETY-KLEEN SERVICES, INC.
                                    By:
                                       ---------------------------------
                                    Kenneth W. Winger
                                    President / Chief Executive Officer


                                                                              22




                                Exhibit (10) (p)

                                  SAFETY-KLEEN

                      CHANGE OF CONTROL SEVERANCE AGREEMENT

                                      Name

                                                                coc sk-a-ambo120
<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

<PAGE>


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
         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                                            12

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

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                                  19
         11.4     Non-alienation of Benefits                               20
         11.5     Severability                                             20
         11.6     Amendments                                               20
         11.7     Notices                                                  20
         11.8     Counterparts                                             21


<PAGE>

         11.9     Governing Law                                            21
         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 5, 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 Last Name) (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.

                                                                               1
<PAGE>

         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 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 Bonus Plan if performance  during that


                                                                               5
<PAGE>


         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, salary continuance,  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)

                                                                               7
<PAGE>


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 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 3.3.

                                   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
         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;


                                                                              10
<PAGE>


                  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. 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,   salary  continuance,   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


                                                                              11
<PAGE>


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 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

                                                                              12
<PAGE>


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

  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
determining whether any

                                                                              14
<PAGE>


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  ontested.  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 determination, then such

                                                                              16
<PAGE>


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 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.


                                                                              17
<PAGE>


                                   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.

                  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).


                                                                              18
<PAGE>


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


                                                                              19
<PAGE>


                                   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.

         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:


                                                                              20
<PAGE>


                                    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.


                                                                              21
<PAGE>


         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 / Chief Executive Officer


                                                                              23






                                Exhibit (10) (q)

                                                                 October 5, 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.

                                       1

                                                                  coc sk b-12-12
<PAGE>

                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 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;

                                       2
<PAGE>

              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  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,  in
                  connection  with  the  consolidation  of  Safety-Kleen   Corp.
                  offices in Columbia,  S.C.,  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.
         Average  compensation is equal to the average aggregate monthly salary,
         bonus, and perquisites  during the fiscal year of the Corporation

                                       3
<PAGE>

         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 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, salary
         continuance,  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.


                                       4
<PAGE>


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
         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.


                                       5
<PAGE>


              c.   You agree that, during the period of your employment with the
         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
         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.


                                       6
<PAGE>


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.

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



                                         SAFETY-KLEEN SERVICES, INC.
                                         By:
                                            --------------------------------
                                         Kenneth W. Winger
                                         President / Chief Executive Officer


Agreed to this           day of
                     , 1999

- ------------------------
FirstName  LastName


                                       7




                                Exhibit (10) (r)

                                                              October 5, 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
                                                                   coc sk c-2-12
<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,  in
                  connection  with  the  consolidation  of  Safety-Kleen   Corp.
                  offices in Columbia,  S.C.,  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.
         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.

                                       3
<PAGE>

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, salary
         continuance,  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 Corpora-
         ---------------
         tion 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,  or other business organization who or which
         at any time (whether  before or
                                       5
<PAGE>

         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.

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

                                       6

<PAGE>

13.      Severability.  The  invalidity or unenforceability  of any provision of
         ------------
         this Agreement shall not effectthe  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 i n  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 / Chief Executive Officer


Agreed to this           day of
                     , 1999

- ------------------------
FirstName  LastName



                                       7



                                Exhibit (10) (s)
                                                                 October 5, 1999

Private and Confidential

Name
Address

City, State Zip

Dear First Name:

         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.


                                       1
                                                                  coc sk d-12-22
<PAGE>

                     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 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,   in   connection   with  the
                     consolidation  of Safety-Kleen  Corp.  offices in Columbia,
                     S.C.,  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 twenty-four month's average compensation.
         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

                                       3
<PAGE>

         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 twenty-four months following the Termination, the Corporation shall
         continue to provide to you and your family welfare benefits (including,
         without limitation,  medical, prescription,  dental, disability, salary
         continuance,  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 Corpora-
         ---------------
         tion 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,  or other business organization who or which
         at any time (whether  before or after the date

                                       5
<PAGE>

         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.

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

                                       6
<PAGE>

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 / Chief Executive Officer


Agreed to this    day of
              , 1999

- ------------------------
Name



                                      7



                                Exhibit 99.1

FOR IMMEDIATE RELEASE                                        Contact: John Kyte
April 14, 2000                                                   (803) 933-4224



SAFETY-KLEEN OBTAINS APPROVAL OF
ITS LENDERS TO DEFER INTEREST PAYMENTS
ON SENIOR INDEBTEDNESS


COLUMBIA, South Carolina - Safety-Kleen Corp. (NYSE:SK) announced today that all
79 of its lenders under its senior credit facility have agreed to defer interest
payments on Safety-Kleen's  senior debt to May 30, 2000. The Company sought this
deferral, which is effective as of April 7, because it otherwise would have been
unable to make interest payments due on senior debt in April and May, 2000.
         "We want to thank our senior lenders for their agreement of forbearance
and interest  deferral," said David E. Thomas,  Jr.,  Chairman of Safety-Kleen's
Executive  Committee.  "This  agreement  should allow the Company to continue to
support  current   operations  and  give  us  additional  time  to  negotiate  a
restructuring of our heavy debt load."
         As previously announced,  Safety-Kleen has retained Lazard Freres & Co.
LLC,  Skadden,  Arps,  Slate,  Meagher & Flom LLP, and Jay Alix & Associates  to
assist it in the restructuring process.
         "The Company and its lenders  understand that our customers,  employees
and regulatory agencies want Safety-Kleen to maintain normal business operations
to the maximum extent  possible  during this  difficult  period in our corporate
history," said Grover Wrenn, Vice Chairman. "We endeavor to maintain their trust
and confidence."
         Under the terms of the agreement with its senior lenders,  Safety-Kleen
is allowed to defer paying all interest under its senior credit  facility to May
30, 2000. The agreement may be terminated under specific conditions,  including,
but not  limited  to other  defaults  which may occur  under the  senior  credit
facility subsequent to the date hereof.
         Under the Private Securities Litigation Reform Act of 1995, sections of
this  release  constitute  forward-looking  statements  that involve a number of
risks and  uncertainties.  Actual results and events may differ  materially from
those  projected in the  forward-looking  statements.  Many factors  could cause
actual  events and results to differ  from those  expected,  including,  but not
limited to the outcome of continuing  negotiations with Safety-Kleen's  lenders,
the Company's ability to successfully integrate,  transition, upgrade or install
information  systems,  the  availability  of  additional  funding  under  credit
facilities  or from other  sources,  and other items  discussed in the Company's
filings with the Securities and Exchange Commission.

                                      # # #





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