SAFETY KLEEN CORP
DEF 14A, 1995-03-24
BUSINESS SERVICES, NEC
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<PAGE>
                           SCHEDULE 14A INFORMATION

          Proxy Statement Pursuant to Section 14(a) of the Securities
                    Exchange Act of 1934 (Amendment No.  )
        
Filed by the Registrant [X]

Filed by a Party other than the Registrant [_] 

Check the appropriate box:

[_]  Preliminary Proxy Statement         [_]  CONFIDENTIAL, FOR USE OF THE
                                              COMMISSION ONLY (AS PERMITTED BY
                                              RULE 14a-6(e)(2))

[X]  Definitive Proxy Statement 

[_]  Definitive Additional Materials 

[_]  Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12

                              SAFETY-KLEEN CORP.
--------------------------------------------------------------------------------
               (Name of Registrant as Specified In Its Charter)


--------------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

   
Payment of Filing Fee (Check the appropriate box):

[X]  $125 per Exchange Act Rules 0-11(c)(1)(ii), 14a-6(i)(1), 14a-6(i)(2)
     or Item 22(a)(2) of Schedule 14A.

[_]  $500 per each party to the controversy pursuant to Exchange Act Rule
     14a-6(i)(3).

[_]  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

   
     (1) Title of each class of securities to which transaction applies:

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     (2) Aggregate number of securities to which transaction applies:

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     (3) Per unit price or other underlying value of transaction computed
         pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
         the filing fee is calculated and state how it was determined):

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     (4) Proposed maximum aggregate value of transaction:

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     (5) Total fee paid:

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[_]  Fee paid previously with preliminary materials.
     
[_]  Check box if any part of the fee is offset as provided by Exchange
     Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee
     was paid previously. Identify the previous filing by registration statement
     number, or the Form or Schedule and the date of its filing.
     
     (1) Amount Previously Paid:
 
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     (2) Form, Schedule or Registration Statement No.:

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     (3) Filing Party:
      
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     (4) Date Filed:

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<PAGE>
 
               [SAFETY-KLEEN LOGO]
 
                                                                  March 24, 1995
Dear Shareholder:
 
  Our directors and officers join me in extending a cordial invitation to
attend the 1995 annual meeting of shareholders to be held at 10:00 A.M. on
Friday, May 12, 1995 at The Westin Hotel O'Hare, 6100 River Road, Rosemont,
Illinois 60018.
 
  In addition to the election of four directors, we shall seek approval of the
1995 Employee Stock Purchase Plan. We shall also report to you on the business
and affairs of the Company.
 
  Our Annual Report, including financial statements for the fiscal year 1994,
is being mailed with this letter.
 
  Whether you plan to attend or not, we urge you to sign, date and return the
enclosed proxy so as many shares as possible may be represented at the meeting.
The vote of every shareholder is important and your cooperation in returning
your executed proxy promptly will be appreciated.
 
  The continuing interest of the shareholders in the business of the Company is
gratefully acknowledged and we hope many will attend the meeting.
                                     Sincerely,
                                     [SIGNATURE LOGO OF DONALD W. BRINCKMAN]
                                     Donald W. Brinckman
                                     Chairman of the Board
<PAGE>
 
                 LOGO
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                            TO BE HELD MAY 12, 1995
 
  The 1995 annual meeting of shareholders of Safety-Kleen Corp. ("Safety-Kleen"
or the "Company") will be held at The Westin Hotel O'Hare, 6100 River Road,
Rosemont, Illinois 60018, at 10:00 A.M., Chicago time, on Friday, May 12, 1995
for the following purposes:
 
    1. To elect three persons to Safety-Kleen's Board of Directors to serve
  three-year terms and to elect one person to serve a one-year term and until
  their successors are elected and qualified. The Board of Directors
  recommends that shareholders vote FOR the four incumbent directors
  nominated by the Board.
 
    2. To consider and act upon a proposal to adopt the 1995 Employee Stock
  Purchase Plan. The Board of Directors recommends that shareholders vote FOR
  this proposal.
 
    3. To transact such other business as may properly come before the
  meeting.
 
  A Proxy Statement containing information regarding the above appears on the
following pages.
 
  Shareholders of record as of the close of business on March 9, 1995 are
entitled to receive notice of and to vote at the annual meeting.
 
  We hope you can attend the meeting in person. However, even if you plan to do
so, WE URGE THAT YOU MARK, SIGN AND DATE THE ENCLOSED PROXY AND RETURN IT
PROMPTLY to Safety-Kleen so that we may be assured of a quorum to transact
business. The proxy is revocable, and, accordingly, your prompt return to
Safety-Kleen of the enclosed proxy form will not affect your right to vote in
person at the meeting if you desire to do so.
                                          By Order of the Board of Directors
 
                                          Robert W. Willmschen, Jr.
                                          Secretary
 
March 24, 1995
Elgin, Illinois
 
                             YOUR VOTE IS IMPORTANT
             PLEASE DATE AND SIGN THE ENCLOSED PROXY AND RETURN IT
                 IN THE ENCLOSED ENVELOPE AS SOON AS POSSIBLE.
 
<PAGE>
 
                                      LOGO
 
                               ----------------
 
               PROXY STATEMENT FOR ANNUAL MEETING OF SHAREHOLDERS
                            TO BE HELD MAY 12, 1995
 
  This Proxy Statement was mailed on or about March 24, 1995 to shareholders of
Safety-Kleen Corp. ("Safety-Kleen" or the "Company") in connection with the
solicitation of proxies by Safety-Kleen's Board of Directors (the "Board of
Directors" or "Board") to be used at the 1995 annual meeting of Safety-Kleen's
shareholders and any adjournments thereof. The meeting will be held on Friday,
May 12, 1995, at 10:00 A.M., Chicago time, at The Westin Hotel O'Hare, 6100
River Road, Rosemont, Illinois 60018.
 
                                    PROXIES
 
  The accompanying proxy is solicited on behalf of the Board of Directors. The
cost of soliciting proxies will be borne by the Company. In addition to
solicitation by mail, officers and regular employees of the Company may solicit
proxies by telephone, telegraph or in person without extra compensation.
 
  Proxies in the accompanying form, properly executed and received by Safety-
Kleen's Secretary prior to the meeting and not revoked, will be voted as
directed thereon or, in the absence of such direction, will be voted as
follows: (i) FOR the election to the Board of Directors of the four persons
nominated by the Board; (ii) FOR approval of the 1995 Employee Stock Purchase
Plan and (iii) in accordance with the judgment of the persons acting under the
proxies with respect to any other matters that may come before the meeting. Any
such proxy may be revoked by the person or persons giving it at any time before
it has been voted by giving written notice of such revocation to Safety-Kleen's
Secretary, by submitting prior to the vote a subsequently dated proxy or by
attending the meeting and voting in person. Attendance at the meeting by a
shareholder will not in itself revoke a previously delivered proxy.
 
                   RECORD DATE, SHARES OUTSTANDING AND VOTING
 
  Shareholders of record as of the close of business on March 9, 1995 are
entitled to vote at the annual meeting. On March 9, 1995, 57,754,963 shares of
Safety-Kleen's common stock, par value $.10 per share (the "Common Stock"),
were outstanding and are entitled to be voted at the annual meeting. Each share
of Common Stock entitles the holder to one vote on each matter to be acted on.
A majority of the Common Stock outstanding on the record date will constitute a
quorum for the transaction of business at the annual meeting, but if a quorum
should not be present, the meeting may be adjourned from time to time until a
quorum is obtained. Pursuant to the Company's Bylaws, abstentions are treated
as present and entitled to vote and thus have the effect of a vote against a
matter. The Company will treat broker non-votes as present for purposes of
establishing a quorum. Broker non-votes as to any proposal will be treated as
not entitled to vote on that matter and thus not counted in determining whether
a matter requiring approval of a majority of the shares present and entitled to
vote has been approved or whether a plurality of the vote of the shares present
and entitled to vote has been cast.
 
COMMON STOCK OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
  The following table sets forth the Common Stock ownership as of March 1, 1995
of (i) shareholders who, to the knowledge of the Company, owned beneficially
more than 5% of the outstanding shares of Common Stock; (ii) each of the
Company's directors; (iii) each named executive officer and (iv) the Company's
directors and executive officers as a group.
 
                                       1
<PAGE>
 
<TABLE>
<CAPTION>
                                               NUMBER OF SHARES   PERCENTAGE OF
                                                 BENEFICIALLY      OUTSTANDING
                     NAME                          OWNED(1)      COMMON STOCK(2)
                     ----                      ----------------  ---------------
<S>                                            <C>               <C>
FIVE PERCENT SHAREHOLDERS
FMR Corp.
 82 Devonshire St., Boston, MA 02109..........    5,681,933           9.84%
Merrill Lynch & Co., Inc.
 World Financial Center, North Tower, New
 York, NY 10281...............................    5,012,922           8.68%
EMERY FAMILY GROUP
------------------
 Joan Emery Lammers
  1801 Seminary St., Alton, IL 62002..........    2,055,518(3)        3.56%
 William H. Emery II
  11388 SW Riverwoods Rd., Portland, OR 97219.    1,678,767           2.91%
 Lucy T. Otzen
  ORC Box 472, 8 Card Sound Pt. Rd., N. Key
  Largo, FL 33037.............................    1,473,081(4)        2.55%
 Edward W. Emery, Jr.
  Route 18, Box 13, Bedford, IN 47421.........      105,571(5)         .18%
 Circle L Enterprises L.P.
  Landmark Center, P.O. Box 1056, Lake Geneva,
  WI 53147....................................    1,367,520(4)        2.37%
DIRECTORS AND NAMED EXECUTIVE OFFICERS
 Donald W. Brinckman..........................      846,708(7)        1.46%
 Joseph Chalhoub..............................      314,187(8)           *
 David A. Dattilo.............................       83,222(9)           *
 Richard T. Farmer............................       35,250(6)           *
 Russell A. Gwillim...........................      199,449(10)          *
 Edgar D. Jannotta............................       60,000(6)           *
 John G. Johnson, Jr..........................       23,062(11)          *
 Karl G. Otzen................................    1,473,081(4)        2.55%
 Paul D. Schrage..............................       23,680(6)           *
 Marcia E. Williams...........................            0              *
 Robert W. Willmschen, Jr.....................      111,104(12)          *
 W. Gordon Wood...............................       84,895(6)           *
ALL DIRECTORS AND EXECUTIVE OFFICERS AS A
 GROUP
 (25 individuals).............................    3,953,143(13)       6.71%
</TABLE>
--------
    * Denotes less than one percent of shares outstanding.
(1) Under regulations of the Securities and Exchange Commission, persons who
    own or have the power to vote or dispose of shares, either alone or jointly
    with others, are deemed to be the beneficial owners of such shares. Such
    persons are also deemed to be the beneficial owners of shares beneficially
    owned by certain close family members.
(2) Shares subject to options exercisable within 60 days of March 1, 1995 are
    considered outstanding for the purpose of determining the percent of the
    class held by the holder of such option, but not for the purpose of
    computing the percentage held by others.
(3) The shares shown for Joan Emery Lammers include 683,760 shares contributed
    by or on behalf of Mrs. Lammers in December 1992 to Circle L Enterprises
    L.P. (the "Circle L Limited Partnership"). See Note (4).
(4) Karl G. Otzen and Lucy T. Otzen (the "Otzens") are husband and wife. For
    purposes of this table, each is deemed to own shares owned by the other,
    and accordingly the same shares are shown opposite each of their names. In
    December 1992, the Otzens caused 683,760 of the shares shown opposite each
    of their names to be contributed to the Circle L Limited Partnership. The
 
                                       2
<PAGE>
 
    general partner which controls the Partnership is a corporation in which
    each of Karl G. Otzen, Lucy T. Otzen, Joan Emery Lammers and her husband
    (the "Lammers") each owns 25% of the voting stock and each occupies one of
    the four positions on the Board of Directors. Because the Otzens and
    Lammers share voting power over all of the shares held by the Partnership,
    each of them may be deemed to "own" all shares in the Partnership under the
    criteria governing this table. To enhance clarity of presentation, however,
    the shares contributed to the Partnership by Joan Emery Lammers are shown
    only opposite her name in the table and the shares contributed by the
    Otzens are shown only opposite their respective names. The shares shown
    opposite the Otzens' names also include: 757,721 shares owned by trusts of
    which the Otzens are co-trustees, 9,100 shares owned by a trust of which
    The Northern Trust Company is trustee and 22,500 shares subject to options
    exercisable by Karl G. Otzen within 60 days of March 1, 1995.
(5) All shares are owned by a trust of which The Northern Trust Company is
    trustee.
(6) Includes 22,500 shares subject to options exercisable within 60 days of
    March 1, 1995.
(7) Includes 73 shares owned by his wife and 341,016 shares subject to options
    exercisable within 60 days of March 1, 1995.
(8) Includes 275,000 shares owned by Breslube Industries, Ltd. of which 100% is
    owned by Mr. Chalhoub. Also included are 75 shares owned by his son and
    39,112 shares subject to options exercisable within 60 days of March 1,
    1995.
(9) Includes 51,877 shares subject to options exercisable within 60 days of
    March 1, 1995.
(10) Includes 30,223 shares owned by his wife and 22,500 shares subject to
     options exercisable within 60 days of March 1, 1995. Mr. Gwillim is also a
     co-trustee for 91,654 shares held in an irrevocable trust for which he has
     no beneficial ownership; such shares are not included in the table.
(11) Includes 700 shares owned by his wife and 18,662 shares subject to options
     exercisable within 60 days of March 1, 1995.
(12) Includes 62,175 shares subject to options exercisable within 60 days of
     March 1, 1995.
(13) Includes 1,158,080 shares subject to options exercisable within 60 days of
     March 1, 1995.
 
PROPOSAL 1: ELECTION OF DIRECTORS
 
  The Company's nine directors are divided into three classes with three
directors elected for a term expiring at the 1997 annual meeting, three
directors elected for a term expiring at the 1996 annual meeting and three
directors elected for a term expiring at the 1995 annual meeting. One class of
directors is elected each year for a three-year term. The terms of Messrs.
Gwillim, Jannotta and Otzen expire at the 1995 annual meeting and they are
nominated for re-election to serve three-year terms expiring in 1998 and until
their successors are chosen and have qualified. Ms. Williams was appointed a
director by the Board of Directors in August of 1994 to serve until the 1995
annual meeting of shareholders. If elected, Ms. Williams will be placed in the
Class of 1996 with Messrs. Brinckman and Wood and therefore, her term will
expire at the 1996 annual meeting. Directors will be elected at the annual
meeting by a plurality of the votes cast at the meeting by the holders of
shares entitled to vote in the election represented in person or by proxy. If
any of the nominees should be unable or unwilling to serve as a director, an
event that is not anticipated, the proxies will be voted for substitute
nominees designated by the Board of Directors. There is no cumulative voting as
to any matter, including the election of directors. The following sets forth
information as to each of the nominees for election at the meeting and each
director continuing in office.
 
  The Board of Directors recommends that shareholders vote FOR Proposal 1.
Proxies solicited by the Board of Directors will be so voted unless
shareholders specify in their proxies that such votes be withheld.
 
                                       3
<PAGE>
 
CLASS OF 1998: (nominees)
                                                             Director since 1968
RUSSELL A. GWILLIM                                                        Age 72
 
  Mr. Gwillim was employed by Chicago Rawhide Manufacturing Company, an oil
seals manufacturer, from 1948 until his retirement in 1984. He served as its
President and Chief Executive Officer from 1969 until his retirement. Mr.
Gwillim was named Chairman Emeritus in August, 1990. Prior thereto he was
Chairman of the Board of Directors of the Company since 1968. Mr. Gwillim is
the Chairman of the Compensation Committee and a member of the Executive
Committee.
 
                                                             Director since 1979
EDGAR D. JANNOTTA                                                         Age 63
 
  Mr. Jannotta became Senior Partner of William Blair & Company, an investment
banking firm, on January 1, 1995, after having served as Managing Partner from
September 1977 through December 1994. He has been employed by that company
since 1959. He is also a director of AAR Corp., Elk Grove Village, Illinois;
Bandag, Incorporated, Muscatine, Iowa; Molex Incorporated, Lisle, Illinois;
Commonwealth Edison Company, Chicago, Illinois and Oil-Dri Corporation of
America, Chicago, Illinois. Mr. Jannotta is a member of the Compensation
Committee and the Executive Committee.
 
                                                             Director since 1984
KARL G. OTZEN                                                             Age 53
 
  Mr. Otzen has been President of Gerhard & Company, a product development
consulting firm, since June 1, 1984. Prior thereto he had been employed by
Safety-Kleen since 1968 and had managed the Company's product development
activities since 1969. He is also Chairman of Gerhard-Sorenson Company, a
consumer products design and manufacturing firm. Mr. Otzen is a member of the
Audit Committee and the Nominating Committee.
 
CLASS OF 1997:
                                                             Director since 1986
RICHARD T. FARMER                                                         Age 60
 
  Mr. Farmer has been Chairman and Chief Executive Officer of Cintas
Corporation, a uniform manufacturer and supplier, since 1968, and has been
employed by that company since 1957. He is also a director of Fifth Third
Bancorp, Cincinnati, Ohio. Mr. Farmer is the Chairman of the Nominating
Committee and a member of the Compensation Committee.
 
                                                             Director since 1993
JOHN G. JOHNSON, JR.                                                      Age 54
 
  Mr. Johnson was elected President and a director of the Company in May 1993,
and assumed the additional responsibility of Chief Executive Officer as of
January 1, 1995. He joined Safety-Kleen in January, 1993 as Assistant to the
Chairman/CEO. Prior to joining Safety-Kleen, Mr. Johnson was employed by ARCO
since 1958. He served as Senior Vice President of ARCO Chemical Company since
1986. In 1987, he became a director and in 1988 was given the added
responsibility of President of ARCO Chemical Americas, a division of ARCO
Chemical Company.
 
                                                             Director since 1981
PAUL D. SCHRAGE                                                           Age 60
 
  Mr. Schrage has been Senior Executive Vice President and Chief Marketing
Officer of McDonald's Corporation, a restaurant franchisor and operator, since
1984 and has been employed by that company since 1967. He is also a director of
McDonald's Corporation, Oak Brook, Illinois. Mr. Schrage is the Chairman of the
Audit Committee and a member of the Nominating Committee.
 
CLASS OF 1996:
                                                             Director since 1968
DONALD W. BRINCKMAN                                                       Age 64
 
  Mr. Brinckman relinquished his post as Chief Executive Officer of the Company
as of December 31, 1994, a position he held since 1968. He served as President
of the Company from 1968 to August
 
                                       4
<PAGE>
 
1990, when he was appointed Chairman of the Company's Board of Directors. On
December 18, 1991, Mr. Brinckman was elected to resume the responsibility of
President upon the death of Joseph F. Knott and served as President from
December 1991 until May 1993. He is also a director of Johnson Worldwide
Associates, Inc., Racine, Wisconsin; Paychex, Inc., Rochester, New York and
Snap-on Incorporated, Kenosha, Wisconsin. Mr. Brinckman is Chairman of the
Executive Committee.
 
                                                             Director since 1994
MARCIA E. WILLIAMS (nominee)                                              Age 48
 
  Ms. Williams has been President of Williams & Vanino, Inc., an environmental
management consulting firm since 1991. From 1988 until 1991, Ms. Williams was
Vice President, Environmental Policy and Planning for Browning-Ferris
Industries, Inc. Between 1970 and 1988 Ms. Williams served in various positions
with the United States Environmental Protection Agency, including Director,
Office of Solid Waste and Deputy Assistant Administrator, Office of Pesticides
and Toxic Substances.
 
                                                             Director since 1968
W. GORDON WOOD                                                            Age 69
 
  Mr. Wood was Vice President of the Company from 1968 until he retired on
March 31, 1985. Mr. Wood is a member of the Audit Committee.
 
                DIRECTORS' COMMITTEES, MEETINGS AND COMPENSATION
 
  The Board of Directors has, pursuant to its powers, designated Compensation,
Audit, Executive and Nominating Committees of the Board. The committee members
have been identified above. The primary functions of the Compensation Committee
are to act on behalf of the Board of Directors in connection with the
administration of the Company's Management Incentive Plan and the Company's
stock option plans, to determine compensation of all officers of the Company
and to approve salary grades of certain management positions. The Compensation
Committee met four times in 1994. The primary functions of the Audit Committee
are to recommend to the Board of Directors the selection of independent
auditors; to review the scope of the independent auditor's examination; to
review with the independent auditors the results of their audits; to review the
adequacy of internal controls with the independent auditors, the Company's
internal auditors and certain officers of the Company and to perform such other
duties as shall from time to time be delegated to the Audit Committee by the
Board. The Audit Committee met twice in 1994. The primary function of the
Executive Committee is to exercise the powers of the full Board of Directors
with respect to the management of the Company's business where it would be
impractical to either convene a special meeting of the full Board of Directors
to deal with any matter or delay action until the next regular meeting of the
Board of Directors. The primary function of the Nominating Committee is to
identify and propose to the full Board nominees, brought to its attention by
directors and officers, to fill vacancies on the Board as they occur. The
Nominating Committee will consider nominations by shareholders, submitted in
accordance with the Company's by-laws. Neither the Executive Committee nor the
Nominating Committee met in 1994.
 
  In 1994, the Board of Directors met four times. Directors who are employees
of the Company receive no additional compensation for their services as
directors. In 1994, directors who were not officers received $12,000 plus
$2,000 for each Board or committee meeting attended, and were reimbursed for
travel and other expenses related to attendance at Board and committee
meetings. During 1994, each incumbent director attended at least 75% of the
meetings of the Board and each Board committee of which such director was a
member.
 
  In February 1988, a non qualified stock option plan for outside directors
(the "Directors' Plan") was adopted and approved by the shareholders at the
1988 annual meeting of shareholders. The Directors' Plan allows eligible
directors of the Company to purchase up to an aggregate of 300,000 shares of
Common Stock at a price equal to the fair market value of the Common Stock on
the date options are granted. Only directors who are not employees of the
Company are eligible to participate in the Directors' Plan. Eligible directors
were granted options to purchase 15,000 shares of the Company's Common Stock
pursuant to the Directors' Plan on February 5, 1988 at an option price of
 
                                       5
<PAGE>
 
$19.416 per share. Under the Directors' Plan, any new outside director elected
or appointed is granted an option to purchase 15,000 shares of the Company's
Common Stock upon becoming a director. An option to purchase 15,000 shares at
an option price of $15.875 per share was granted to Marcia Williams upon her
appointment as a director in 1994. The Directors' Plan also provides for the
automatic grant of a second option to purchase 15,000 shares to each outside
director on the fifth anniversary of the initial grant of options to such
director, but only if such director is still serving on the Board at that time.
As a result of such provision, a second grant was made on February 5, 1993 at
an option price of $24.00 per share to the seven eligible directors. Options
are exercisable 25 percent annually, on a cumulative basis, starting one year
from date of grant and expire ten years from date of grant.
 
                             EXECUTIVE COMPENSATION
 
SUMMARY COMPENSATION TABLE
 
  The following table specifies the components of the compensation packages of
the Chief Executive Officer of the Company and the four other most highly
compensated executive officers of the Company (the "named executive officers").
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                        LONG-TERM
                                ANNUAL COMPENSATION       COMP.
                                --------------------   -----------
                                                         AWARDS
                                                       -----------
                                                       SECURITIES
                                                       UNDERLYING   ALL OTHER
        NAME AND                                       OPTION/SARS COMPENSATION
   PRINCIPAL POSITION      YEAR  SALARY   BONUS(1)         (#)         (3)
   ------------------      ---- --------- --------     ----------- ------------
<S>                        <C>  <C>       <C>          <C>         <C>          <C>
Donald W. Brinckman        1994 $ 440,000 $ 138,000      37,250       $2,250
 Chairman and CEO          1993   434,462         0      50,100            0
                           1992   404,109   190,021      26,400          424
John G. Johnson, Jr.       1994   320,961   119,600      19,400        2,250
 President and COO         1993   247,183   125,000(2)   34,450            0
Joseph Chalhoub            1994   183,594    66,420      12,000        4,510
 Senior Vice President     1993   171,099         0      16,650        4,173
                           1992   173,269    79,125       8,800        3,895
David A. Dattilo           1994   178,500    68,850      12,000        2,250
 Senior Vice President(4)  1993   197,884    17,913      16,950            0
                           1992   191,568    53,597       9,000          424
Robert W. Willmschen, Jr.  1994   180,606    61,500      12,000        2,250
 Senior Vice President     1993   167,853         0      16,700            0
                           1992   160,366    80,652       8,650          424
</TABLE>
--------
(1) The bonus amounts are primarily amounts payable pursuant to the Company's
    Management Incentive Plan described under the caption "Compensation
    Committee Report." The bonus amount of $17,913 paid in 1993 to Mr. Dattilo
    is a bonus related to sales performance.
(2) Mr. Johnson received a one time payment related to his joining the Company
    in 1993.
(3) The compensation reported represents Company contributions to the Savings
    and Investment Plan, a defined contribution plan, made for Messrs.
    Brinckman, Johnson, Dattilo and Willmschen. The compensation for Mr.
    Chalhoub represents Company contributions to a defined contribution plan
    administered by Safety-Kleen Canada, Inc.
(4) Salary shown for Mr. Dattilo in 1992 and 1993 includes certain commissions
    based on sales performance; these commissions were terminated December 31,
    1993.
 
                                       6
<PAGE>
 
OPTION/SAR GRANTS IN LAST FISCAL YEAR
 
  The following table provides information related to options/SARs granted to
the named executive officers during fiscal 1994.
 
<TABLE>
<CAPTION>
                                                                         POTENTIAL REALIZABLE VALUE AT
                                                                            ASSUMED ANNUAL RATES OF
                                                                                  STOCK PRICE
                                        INDIVIDUAL GRANTS                APPRECIATION FOR OPTION TERM
                         ----------------------------------------------- -----------------------------
                          NUMBER OF
                          SECURITIES    % OF TOTAL
                          UNDERLYING   OPTIONS/SARS  EXERCISE
                         OPTIONS/SARS   GRANTED TO   OR BASE
                           GRANTED      EMPLOYEES     PRICE   EXPIRATION
          NAME              (#)(1)    IN FISCAL YEAR  ($/SH)     DATE      5% ($)(2)     10% ($)(2)
          ----           ------------ -------------- -------- ---------- -----------------------------
<S>                      <C>          <C>            <C>      <C>        <C>           <C>
Donald W. Brinckman.....    37,250         7.59%     $15.625   02-11-04  $     366,036 $       927,608
John G.
 Johnson, Jr............    19,400         3.95%      15.625   02-11-04        190,634         483,103
Joseph Chalhoub.........    12,000         2.44%      15.625   02-11-04        117,918         298,827
David A. Dattilo........    12,000         2.44%      15.625   02-11-04        117,918         298,827
Robert W.
 Willmschen, Jr.........    12,000         2.44%      15.625   02-11-04        117,918         298,827
Shareholders(3).........     N/A           N/A         N/A       N/A       567,527,905   1,438,227,138
</TABLE>
--------
(1) All options are non qualified, expire 10 years from date of grant, were
    issued at fair market value on the date of grant and vest at the rate of
    25% per year beginning one year from grant date. Options granted to
    executive officers have a tandem limited stock appreciation right (LSAR)
    which entitles the officer to elect to receive a "Change of Control Value"
    (as described in the 1993 Stock Option Plan) of the option in cash in the
    event a Change of Control occurs.
(2) The potential realizable value portion of the foregoing table illustrates
    the gain that might be realized upon the exercise of the options
    immediately prior to the expiration of their term, assuming the specified
    compounded rates of appreciation of the Company's Common Stock over the
    term of the option. Actual gains, if any, on the stock option exercises are
    dependent on the future performance of the Common Stock, overall market
    conditions, as well as the option holders' continued employment through the
    vesting period. The amounts reflected in this table may not necessarily be
    achieved.
(3) With respect to shareholders, the potential realizable value illustrates
    the gain that might be realized on the 57,754,963 shares of Common Stock
    issued and outstanding as of year end, assuming the specified compounded
    rates of appreciation of the Company's Common Stock over the term of the
    options. The value is calculated based on the Exercise or Base Price of the
    option grant on February 11, 1994 of $15.625 per share.
 
 
                                       7
<PAGE>
 
AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION/SAR
VALUES
 
  The following table provides information related to options exercised by the
named executive officers during fiscal year 1994 and the number and value of
options held at fiscal year end.
 
<TABLE>
<CAPTION>
                                                   NUMBER OF UNEXERCISED     VALUE OF UNEXERCISED,
                                                      OPTIONS HELD AT       IN-THE-MONEY OPTIONS AT
                              SHARES                FISCAL YEAR END (#)       FISCAL YEAR END($)*
                            ACQUIRED ON  VALUE   ------------------------- -------------------------
           NAME              EXERCISE   REALIZED EXERCISABLE UNEXERCISABLE EXERCISABLE UNEXERCISABLE
           ----             ----------- -------- ----------- ------------- ----------- -------------
<S>                         <C>         <C>      <C>         <C>           <C>         <C>
Donald W. Brinckman.......        0        $0      310,497      94,645       $5,671       $17,016
John G. Johnson, Jr.......        0         0        8,612      45,238        2,952         8,860
Joseph Chalhoub...........        0         0       29,337      30,763        1,827         5,485
David A. Dattilo..........        0         0       41,377      31,688        1,827         5,485
Robert W. Willmschen, Jr..        0         0       51,881      31,270        1,827         5,485
</TABLE>
--------
*  Represents the difference between the per share exercise price and the
   closing price of the Common Stock on December 30, 1994 ($14.75).
 
PENSION PLAN
 
  The Safety-Kleen Pension Plan for Salaried Employees (the "Pension Plan")
provides retirement benefits for life for salaried employees, including
executive officers, of the Company and its participating subsidiaries. Pensions
are based on final pay, which is defined as the average annual earnings
(including commissions and incentive compensation) for the five consecutive
years which yield the highest average. For the named executive officers,
covered compensation is substantially the same as the sum of the Salary and
Bonus columns for 1994 on the Summary Compensation Table. The pensions are
payable monthly commencing the first calendar month after retirement.
 
  Under the Safety-Kleen Corp. Excess Benefit Plan (the "Excess Benefit Plan"),
executive officers are generally entitled to the difference between the
benefits actually paid to them under the Pension Plan and the benefits which
they would have received under the Pension Plan were it not for certain
restrictions imposed under the Internal Revenue Code of 1986, as amended (the
"Code"), relating to the amount of benefits payable under the Pension Plan and
the amount of annual compensation which may be taken into account in
determining benefits under the Pension Plan. The Excess Benefit Plan also
provides that the executive officers' benefits are calculated on the highest
five of their last ten years' compensation and that any executive officer who
has attained both the age of 60 years and 30 years of service will receive an
unreduced pension benefit.
 
  The following table reflects annual pension benefits commencing at age 65
based upon assumed final pay amounts and years of credited service:
 
                      ESTIMATED ANNUAL PENSION BASED UPON
                  INDICATED YEARS OF CREDITED SERVICE FOR THE
                    PENSION PLAN AND THE EXCESS BENEFIT PLAN
<TABLE>
<CAPTION>
   ASSUMED
   AVERAGE
    ANNUAL
    FINAL       10         15         20         25         30         35
     PAY       YEARS     YEARS      YEARS      YEARS      YEARS      YEARS
   -------     -----     -----      -----      -----      -----      -----
   <S>        <C>       <C>        <C>        <C>        <C>        <C>
   $150,000   $24,572   $ 36,858   $ 49,144   $ 61,430   $ 73,716   $ 73,926
    200,000    32,907     49,361     65,814     82,268     98,721     98,931
    250,000    41,242     61,863     82,484    103,105    123,726    123,936
    300,000    49,577     74,366     99,154    123,943    148,731    148,941
    350,000    57,912     86,868    115,824    144,780    173,736    173,946
    400,000    66,247     99,371    132,494    165,618    198,741    198,951
    450,000    74,582    111,873    149,164    186,455    223,746    223,956
    500,000    82,917    124,376    165,834    207,293    248,751    248,961
    550,000    91,252    136,878    182,504    228,130    273,756    273,966
    600,000    99,587    149,381    199,174    248,968    298,761    298,971
    650,000   107,922    161,883    215,844    269,805    323,766    323,976
    700,000   116,257    174,386    232,514    290,643    348,771    348,981
    750,000   124,592    186,888    249,184    311,480    373,776    373,986
</TABLE>
 
                                       8
<PAGE>
 
  The amounts shown above are computed on straight-life annuity amounts and are
not subject to deduction for Social Security benefits or other offset amounts.
The amounts are assumed payable under the Pension Plan option providing
lifetime benefits for the employee only, and would be reduced if the retiree
elected a surviving spouse's pension. Messrs. Brinckman, Johnson, Dattilo and
Willmschen had 35 years, 2 years, 27 years, and 16 years, respectively, of
credited service under the Pension Plan as of December 31, 1994.
 
EMPLOYMENT CONTRACTS AND SEVERANCE ARRANGEMENTS
 
  Mr. Brinckman had an employment contract with the Company which became
effective as of February 5, 1988 and initially covered the period through
December 31, 1992. Although the term of the contract was extended until
December 31, 1996, Mr. Brinckman and the Company agreed in 1994 to terminate
the contract effective December 31, 1994. The contract provided for a minimum
base salary of $280,000 (or such higher amount as the Board may determine)
annually and for benefits under the Management Incentive Plan, as currently in
existence or, if higher, as amended, or equivalent benefits in the event of
termination of that Plan. Mr. Brinckman's contract also provided for various
payments upon termination of his employment, depending upon the reason for the
termination.
 
  The Company entered into an employment agreement with Mr. Johnson in
connection with his acceptance of employment with the Company in January, 1993.
Pursuant to that agreement, the Company agreed to provide Mr. Johnson with
salary continuation and benefits under the Management Incentive Plan for a six
month period if Mr. Johnson's employment is terminated by the Company for any
reason during the period between January 18, 1995 and January 17, 1996. In
addition, Mr. Johnson entered into a severance agreement with the Company that
provides if he is terminated for reasons other than gross misconduct before
January 17, 1996, in addition to the separation payments described above, the
Company will (i) recommend to the Board that the vesting of any stock options
granted prior to the date of termination be accelerated, (ii) pay for one move
to the East Coast according to the Company Moving Policy in place at the time
and (iii) provide executive outplacement services to Mr. Johnson.
 
  The Company has entered into agreements with eighteen of its officers and
other vice presidents, including the named executive officers, providing for
the payment of certain severance benefits in the event of termination for
reasons other than a voluntary termination or discharge for cause (as both
terms are defined in such contracts) within three years after a change in
control of the Company (which is generally defined as the purchase by any
person or group of persons of more than 20% of the issued and outstanding
Common Stock, a change in the majority of the members of the Board over a 24-
month period, or certain corporate reorganizations). Benefits under these
contracts include the payment of a lump sum severance benefit equal to three
times the executive's annual salary at the time of termination (or if greater,
at the time of the change in control), plus three times the greater of (i) the
bonus he received for the previous year or (ii) the maximum bonus to which he
could be entitled for the year in which the termination occurs.
 
  Each of the severance agreements provides for a reduction of payments due
under such agreement, to the extent that such payments, together with all other
amounts payable to the executive other than payments attributable to options
granted him under the Company's stock option plans, constitute "excess
parachute payments" under federal tax law. The contract also provides that the
Company will reimburse the executive for any additional income taxes (including
excise taxes) he incurs as a result of payments upon termination (including
payments attributable to options) being treated as excess parachute payments
under federal income tax law.
 
 
                                       9
<PAGE>
 
COMPENSATION COMMITTEE REPORT
 
  Pursuant to the rules regarding disclosures of Company policies concerning
executive compensation, this report is submitted by Messrs. Farmer, Gwillim,
and Jannotta in their capacity as the Board's Compensation Committee and
addresses the Company's compensation policies for 1994 as they affected Mr.
Brinckman, the Chief Executive Officer ("CEO"), and the Company's other
executive officers, including the named executive officers.
 
  Overview of Executive Compensation Policy. The Company's compensation
philosophy is incentive oriented, particularly for executive officers. The
variable or incentive portion of an executive compensation program is designed
to be closely linked to corporate performance and returns to shareholders.
Accordingly, the Company has developed an overall compensation strategy and
specific compensation plans that tie a significant portion of executive
compensation to the Company's success in meeting specified performance goals
and to appreciation in the Company's stock price. The overall objectives of
this strategy are to motivate the CEO and the executive officers to achieve the
goals inherent in the Company's business strategy, to link executive and
shareholder interests through equity-based plans, and finally, to provide a
compensation package that recognizes individual contributions, as well as
overall business results.
 
  The Compensation Committee receives the recommendations of the CEO for the
compensation to be paid the executive officers, including the named executive
officers, and after due deliberation determines the compensation of such
executive officers and the CEO. This process is designed to ensure consistency
throughout the executive compensation program.
 
  The key elements of the Company's executive compensation program consist of
salary, annual bonus, and stock options. In addition, while the elements of
compensation described below are considered separately, the Compensation
Committee takes into account the full compensation package provided by the
Company to the individual, including pension benefits, supplemental retirement
benefits, severance plans, insurance, and other benefits.
 
  In determining compensation, the Compensation Committee compares the
executive officers compensation to the compensation paid to persons in
comparable positions at comparable companies. The comparable companies used for
this comparison are not the same companies that comprise the peer group index
in the Stock Performance Graph on page 13, because the Compensation Committee
believes that the Company's competitors for executive talent are not generally
the companies included in that index. For these purposes, comparable companies
are approximately 55 companies, surveyed by an outside consulting firm, whose
sales, assets, shareholders' equity, net income, return on equity, and total
number of employees are similar to those of the Company.
 
  The Compensation Committee does not believe that IRC Section 162(m), which
denies a deduction for compensation payments in excess of $1 million to the CEO
or a named executive officer, is likely to be applicable to the Company in the
near future, but will reconsider the implications of IRC Section 162(m) if and
when it appears that the section may become applicable.
 
  Salaries. Salaries for executive officers are determined by (i) subjectively
evaluating the responsibilities of the position held and the experience and
performance of the individual and (ii) comparing base salaries for comparable
positions at comparable companies.
 
  With respect to Mr. Brinckman's base salary, he and the Company entered into
the previously referenced employment contract in February 1988, which was
terminated effective December 31, 1994. The contract provided for a minimum
salary, or larger amount as might be fixed from time to time by the Board. Mr.
Brinckman's salary was not increased during 1994 because he was no longer
serving in the dual capacity of CEO and President.
 
                                       10
<PAGE>
 
  Annual Bonus. The Company's executive officers are eligible for an annual
cash bonus under the Company's Management Incentive Plan (the "Plan"). The
purpose of the Plan is to supplement through an incentive bonus the pay for
executive officers (and other key management personnel) so that overall total
cash compensation (salary and bonus) is externally competitive and properly
rewards Plan participants for their efforts in achieving certain specified pre-
tax earnings goals.
 
  The Plan operates as follows. Each year, the return on beginning-of-year
equity ("ROE") for each firm comprising the Standard & Poor's 500 is calculated
and arranged in descending ROE order (from the 99th percentile on down) for the
four consecutive calendar quarters ending with the third quarter for the
preceding year (for 1993, the Standard & Poor's 500 data was for the four
consecutive calendar quarters ending with the third quarter for that year).
Each percentile is also matched with its corresponding ROE. If the Company's
ROE, as defined in the Plan, for the year is less than the ROE level, of the
specified, predetermined percentile, then no bonus is paid. If, however, the
Company's ROE equals the minimum ROE level, then a formula incentive bonus pool
of 1 percent of consolidated pretax earnings, as defined in the Plan, is
created. The size of the formula bonus pool increases on a graduated basis to a
maximum of 5 percent of consolidated pretax earnings if the maximum ROE level
is attained. At the beginning of each year, the Compensation Committee reviews
and approves the list of Plan participants and the percentage share of the
formula pool for each participant (other than the CEO).
 
  In addition to a share of the formula pool, a Plan participant is also
eligible for a discretionary bonus not to exceed 50 percent of his or her share
of the formula pool. Thus, the aggregate maximum annual bonus payments would be
7.50 percent of pre-tax earnings, although the Compensation Committee has never
awarded each Plan participant the maximum discretionary bonus nor has the
entire formula pool ever been allocated to participants. After the Company has
received its audited year-end financial statements and the size of the formula
bonus pool has been determined, the Compensation Committee approves the
recommended discretionary shares. The Plan also provides for the Board of
Directors to make a determination, notwithstanding the other Plan provisions,
regarding the amount of the bonus pool and the awards to be paid to individual
participants. This provision permits the Board of Directors to make whatever
changes it deems necessary to preserve the purposes and objectives of the Plan.
 
  For 1994, a formula pool of 1.6% of pre-tax earnings was allocated to
participants. Discretionary bonuses increased the size of the total pool
allocated to participants to 2.3% of pre-tax earnings.
 
  Mr. Brinckman's employment agreement provided for an annual bonus payment not
less than a specified fixed share of the formula bonus pool and an additional
discretionary bonus amount based on increases in Company consolidated net
profit. For 1994, however, Mr. Brinckman agreed to take a lesser share of the
formula bonus pool than provided in his employment agreement. He also received
a discretionary bonus based on the increase in the Company's consolidated net
profit for 1994.
 
  Stock options. Stock option grants under the 1985 and 1993 Stock Option Plans
are designed to align the long-term interests of the Company's executives and
its shareholders and assist in the retention of executives. Stock options are
granted with an exercise price equal to the market price on the date of grant.
The Company's practice is to award options at the beginning of each year and
vest such options at the rate of 25 percent per year beginning at the one-year
anniversary of the grant. This approach is designed to create shareholder value
over the long-term because the full benefit of the options cannot be realized
unless stock price appreciation occurs over a number of years.
 
  In February 1994, the Compensation Committee recommended and the Board of
Directors granted nonqualified stock options under the 1993 Plan to all
executive officers, as well as certain other employees. The grants made to each
executive officer, including the CEO, were based on each
 
                                       11
<PAGE>
 
executive's level in the Company and immediate prior year's total cash
compensation. The number of options granted to each executive officer was
determined by (i) multiplying the executive's total cash compensation by a
specified percentage (which ranged from 150 percent to 80 percent) depending
upon the executive officer's level of responsibility within the Company and
(ii) dividing the product obtained in (i) by the Company's average stock price
for the prior year. This formula approach, which is indirectly based on
competitive compensation data, provides for awards based on current duties and
responsibilities, as well as present and potential contributions to the success
of the Company.
 
  As a result of the decrease in the market value of the Company's Common
Stock, all stock option grants under the 1985 Stock Option Plan made prior to
June 1990 have an exercise price greater than the market value of the Company's
Common Stock. Because the remaining term on such options varied from two to
five and one-half years (the original term of each option grant was 10 years),
the Compensation Committee believed that the incentive compensation aspect of
such options had been significantly reduced. The Compensation Committee
determined that an equitable approach to restoring the incentive value of such
options would be to extend their term until November 30, 2004 but maintain the
same exercise prices.
 
  Accordingly, in December 1994, the Board of Directors amended the 1985 Stock
Option Plan to permit the award of options for a term greater than 10 years.
Following the amendment, the Compensation Committee modified each stock option
grant made prior to June 1990 (a total of 1,147,000 shares) to the CEO, all
executive officers, and certain other employees by extending the option term
for each such grant until November 30, 2004. The exercise prices for such
options, which range from approximately $17 to $24, were not changed.
 
                            Russell A. Gwillim, Chairman
                            Richard T. Farmer
                            Edgar D. Jannotta
 
                                       12
<PAGE>
 
STOCK PERFORMANCE GRAPH
 
  The following graph compares the cumulative total shareholder return on the
Common Stock during the five fiscal years ended December 31, 1994 with the
cumulative total return on the Standard & Poor's 500 Index and the Smith Barney
Shearson Hazardous Waste Index. The comparison assumes $100 was invested on
December 31, 1989 in the Company's Common Stock and in each of the foregoing
indices and assumes reinvestment of dividends.
 
                COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
    SAFETY-KLEEN CORP, STANDARD & POOR'S 500 INDEX AND SMITH BARNEY SHEARSON
                             HAZARDOUS WASTE INDEX
 
                                      LOGO
 
 
<TABLE>
<CAPTION>
                                          1989   1990   1991   1992   1993   1994
---------------------------------------------------------------------------------
  <S>                                     <C>    <C>    <C>    <C>    <C>    <C>
  SAFETY KLEEN CORP                       $100   $130   $129   $121   $ 84   $ 78
  STANDARD & POOR'S 500 INDEX              100     97    126    136    150    152
  SMITH BARNEY SHEARSON HAZARDOUS WASTE
   INDEX                                   100     99    102     96     62     50
</TABLE>
 
 
 
                                       13
<PAGE>
 
PROPOSAL 2: APPROVAL OF THE PROPOSED 1995 EMPLOYEE STOCK PURCHASE PLAN
 
  Overview. The Company proposes that its shareholders approve its 1995
Employee Stock Purchase Plan (which is called the "Plan" or the "1995 Plan" in
this proxy statement). The Plan is intended to continue and improve a program
which has been in effect at the Company since 1980 under which employees (other
than senior officers) are able to purchase the Company's Common Stock. Under
the Plan, each eligible employee is entitled to decide in June of each year how
much the employee desires to commit to the purchase of shares under the Plan.
The committed amount is deducted from the employee's pay in equal installments
over the following twelve months. After the deductions are completed in July of
the next year, the shares purchased with the year's worth of payroll deductions
are issued to the participant at a purchase price equal to 90% of the lower of
(i) the market price on the first business day in June in the year in which the
purchase commitment was made or (ii) the market price on the last business day
in June of the next year (i.e., the market price prevailing just before the
shares are actually issued).
 
  The 1995 Plan has been approved by the Company's Board of Directors and the
Board recommends that shareholders also approve the Plan at their 1995 annual
meeting. The Board believes that the stock purchase program is in the best
interests of the Company's shareholders because it provides an additional
incentive for employees to increase the value of the Company and to identify
with the interests of the Company's shareholders.
 
  A summary of the Plan is provided immediately below. All statements about the
Plan in this proxy statement are qualified by reference to the complete copy of
the Plan attached to this proxy statement.
 
  How the Plan Works: Most employees of the Company and its subsidiaries are
eligible to participate in the Plan. The eligibility rules are contained in
parts 2 and 3 of the Plan. At December 31, 1994, the Company and its
subsidiaries employed approximately 6,560 persons on a full time basis of whom
approximately 93.4% would have been eligible on that date to participate in the
new Plan in 1995. The persons not eligible to participate consist primarily of
the Company's executive officers and employees of certain of the Company's
subsidiaries based outside the United States. Virtually all other employees are
eligible to participate after they have been employed for at least six months.
None of the Company's directors are eligible to participate in the Plan.
 
  In June of each year, every eligible employee has the right to decide the
amount he or she will commit to the purchase of stock under the Plan during the
following year. The maximum amount that any employee can commit to the Plan for
any year is limited to 5% of his or her compensation from the Company during
twelve months immediately preceding the June in which the commitment is made
(annualized if the employee has been employed by the Company for less than one
year). Every employee is free to decide not to participate in the Plan in any
year. An employee who elects not to participate in any particular year is free
to participate the next year.
 
  The amount that each employee commits to the Plan (called his or her
"purchase commitment") is deducted from his or her pay in equal installments
over a one year period beginning with the first payday occurring after July 15
in the year in which the employee's contribution commitment is made.
 
  The purchase commitment which an employee elects to make in any year entitles
the employee to purchase Common Stock from the Company at a price per share
equal to 90% of the lower of (i) the market price per share on the first
business day in June in that year or (ii) the market price per share on the
last day of June in the next calendar year. The number of shares issuable to
each employee will be determined by dividing the employee's committed amount by
the purchase price per share (determined as indicated in the preceding
sentence).
 
                                       14
<PAGE>
 
  An employee may elect to terminate any purchase commitment under the Plan at
any time up to May 31 of the year after the year in which the purchase
commitment was made. If an employee terminates his or her commitment, the
deductions made from his or her pay under that commitment will be returned to
the employee without interest and the employee will have no right to purchase
any stock under the plan in the annual cycle to which the terminated commitment
applied. If an individual's employment with the Company and its subsidiaries
terminates after the individual makes an annual contributions commitment to the
Plan and prior to June 30 in the following year, the employment termination
will automatically terminate any purchase commitment by the individual which
has not resulted in the issuance of stock under the Plan, the amount of payroll
deductions made to implement that commitment will be refunded without interest,
and the individual will loose the right to utilize any part of his or her
committed amount to purchase shares.
 
  The 1995 version of the Plan incorporates two changes from the version of the
plan in effect during the past five years. Under the preceding version of the
Plan, the purchase price would be locked in at 90% of the market value of the
stock on the first business day in the June in which the purchase commitment
was made, and if the stock price happened to fall during the intervening year,
almost all participants would exercise their right to terminate their purchase
commitment and obtain a refund of their payroll deductions. Under the preceding
version of the Plan, participants were entitled to receive interest at a rate
of 6% per annum on the refunded payroll deductions. As noted above, the 1995
version of the Plan provides that if the stock price falls in the course of the
year during which the payroll deductions are being made, the participant will
be entitled to purchase stock at 90% of the market price of the stock on June
30 occurring just before the payroll deductions are completed. This feature is
intended to encourage participants to acquire stock under the Plan rather than
terminate their purchase commitments. The 1995 Plan further promotes this
objective by providing that if a participant does terminate his or her
commitment, the participant will not be entitled to receive interest on the
refund of his or her payroll deductions.
 
  The 1995 Plan limits the total number of shares which may be issued under the
Plan to 1.5 million shares (subject to adjustment to reflect any stock splits
or other capital changes). The number of shares issued under the predecessor
plans in each of the past five years were: 1994--11,207 shares; 1993--5,222
shares; 1992--58,346 shares; 1991--102,015 shares; and 1990--62,162 shares.
 
  As purchase commitments under the Plan are solely within each employee's
control, the amounts and values of future benefits to be received pursuant to
the Plan are not determinable.
 
  The Plan provides that the Company's Board of Directors may at any time
terminate the Plan or make such changes or amendments as it may deem advisable
without seeking any additional approval of the Company's shareholders.
 
  Federal Income Tax Considerations. A participant will be required to
recognize as ordinary income the deductions from his or her pay used to collect
the purchase price for stock sold to the participant under the Plan. The
participant will not be required to recognize any taxable income at or prior to
the time stock is issued under the Plan on the amount (if any) by which the
market value of the stock exceeds the amount the participant paid for it under
the Plan. If the participant holds stock for at least a year after it is issued
to the participant under the Plan, then the participant will realize ordinary
income at the time he or she sells it equal to the lower of (i) the original
"spread" equal to 10% of the fair market value of the share on the first
business day in June of the year in which the participant authorized the
payroll deductions used to purchase the shares or (ii) the actual gain on sale
(i.e., the amount by which the price at which the participant eventually sells
the shares exceeds what the participant actually paid for the shares). If the
actual gain on sale exceeds the original spread, the excess will be taxed to
the participant as long term capital gains.
 
  If a participant disposes of shares less than a year after they are issued to
the participant under the Plan, the participant will recognize ordinary income
equal to the excess of the fair market value
 
                                       15
<PAGE>
 
of the shares on June 30 in the year in which the shares were issued over the
purchase price for the shares under the Plan. If the sale price exceeds that
June 30 fair market value, the excess will be taxed to the participant as short
term capital gain.
 
  Shareholder Vote Required. Approval of the 1995 Plan requires the affirmative
vote of a majority of the shares of Common Stock present at the annual meeting
of shareholders (in person or by proxy).
 
  The Board of Directors recommends a vote FOR Proposal 2.
 
      COMPLIANCE WITH SECTION 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934
 
  The Company's executive officers and directors are required to file under the
Exchange Act reports of ownership and changes of ownership with the Securities
and Exchange Commission and the New York Stock Exchange.
 
  Based solely on information provided to the Company by executive officers and
directors, the Company believes that during the preceding year all filing
requirements applicable to executive officers and directors have been complied
with except that a Form 4 filing for John G. Johnson, Jr. was inadvertently
filed ten days late.
 
                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
  In 1987, the Company purchased its oil processing business from enterprises
controlled by Joseph Chalhoub. Mr. Chalhoub is now a Senior Vice President of
the Company and supervises the Company's oil reprocessing business. Mr.
Chalhoub owns a 31% interest in Booth Oil Company, Inc. ("Booth"). Booth is the
operator of an oil reprocessing facility in Buffalo, New York (the "Facility").
The Company did not attempt to acquire the Facility at the time of the initial
acquisition of the oil processing business because Booth was in the process of
a reorganization under Chapter 11 of the Bankruptcy Act and because the Company
desired certain environmental clean up work be done before it acquired the
Facility. Speedy Oil Co., Inc. (a company in which Mr. Chalhoub owns a 45%
interest) ("SOC") acquired the right to purchase the Facility out of the
Chapter 11 proceeding for $1 million and made substantial capital improvements
at the Facility. SOC charged Booth $7,500 per month for use of the capital
improvements pending SOC's purchase of the Facility. The purchase was
consummated on or about November 1, 1992, and thereafter SOC leased the
Facility (including the improvements made to it by SOC) back to Booth at a
rental of $50,000 per month. In 1990 SOC granted the Company an option to
purchase the Facility from SOC for a price equal to SOC's investment in the
Facility plus interest on the investment at 12% per annum. During 1994, Safety-
Kleen Oil Services, Inc. ("SKOS"), a wholly-owned subsidiary of the Company,
settled a pending criminal investigation concerning the handling of used oil
and oily water from 1989 to 1991 at the Facility. Under the settlement, SKOS
agreed to pay a $1.9 million civil forfeiture. As a further part of the
settlement, the Company agreed to exercise the option granted to it by SOC and
purchase the Facility for approximately $2.4 million in accordance with the
terms of the option outlined above. The purchase was consummated on September
16, 1994. Since that time, Booth has continued to operate the Facility as the
owner and operator under applicable environmental permits. The Company paid
Booth approximately $2.6 million for processing services at the Facility during
1994. The Company believes that the prices it paid for processing and
management services at the Facility were competitive with the prices it would
have been required to pay at other third party facilities.
 
                                       16
<PAGE>
 
  During 1994, the Company paid approximately $200,000 to Williams & Vanino,
Inc., for environmental management consulting services. Marcia E. Williams, a
director of the Company, is President of Williams & Vanino. In addition, Marcia
Williams' husband is a partner with the law firm of Latham & Watkins. Safety-
Kleen paid approximately $270,000 to Latham & Watkins for legal services in
1994. Latham & Watkins' total revenues in 1994 were over $260 million.
 
  Most of the uniforms used by the Company are supplied by Cintas Corporation
as part of Cintas' uniform service. One of the Company's directors, Richard
Farmer, is the Chairman and Chief Executive Officer of Cintas Corporation.
During 1994, Safety-Kleen paid approximately $3 million to Cintas for this
uniform service. Cintas Corporation's total revenues exceeded $570 million in
1994.
 
                         INDEPENDENT PUBLIC ACCOUNTANTS
 
  The Board of Directors has appointed Arthur Andersen & Co., independent
public accountants, as auditors for its fiscal year ending December 30, 1995,
upon the recommendation of its Audit Committee.
 
  The firm of Arthur Andersen & Co. has audited the accounts of the Company
since 1968. A representative of the firm of Arthur Andersen & Co. will be in
attendance at the shareholders' meeting with the opportunity to make a
statement if such representative desires to do so and will be available to
respond to shareholder questions.
 
                             SHAREHOLDER PROPOSALS
 
  In order to be considered for inclusion in the Proxy Statement relating to
the 1996 annual shareholders' meeting, any proposal by a record holder of
Common Stock must be received by the Company at its principal executive office
in Elgin, Illinois, no later than November 25, 1995. Any such proposals, as
well as any questions related thereto, should be directed to the Secretary of
the Company.
 
                               OTHER INFORMATION
 
  Safety-Kleen's management does not know of any other matters that will be
presented for action at the 1995 annual meeting. Should any other matter come
before the meeting, however, the proxies will be voted with respect to such
matter in accordance with the judgment of the persons acting under the proxies.
 
  A COPY OF SAFETY-KLEEN'S ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED
DECEMBER 31, 1994 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION MAY BE
OBTAINED WITHOUT CHARGE BY SENDING A WRITTEN REQUEST FOR SUCH REPORT TO:
 
                ROBERT W. WILLMSCHEN, JR.
                SR. VICE PRESIDENT AND SECRETARY
                SAFETY-KLEEN CORP.
                1000 NORTH RANDALL RD.
                ELGIN, ILLINOIS 60123
 
                                          By Order of the Board of Directors
 
                                          Robert W. Willmschen, Jr.
                                          Secretary
March 24, 1995
Elgin, Illinois
 
                                       17
<PAGE>
 
                                                                       EXHIBIT A
 
                   SAFETY-KLEEN EMPLOYEE STOCK PURCHASE PLAN
 
  1. Purpose of the Plan. The Plan described in this instrument shall have the
name "Safety-Kleen Employee Stock Purchase Plan" and is herein called "this
Plan." The purpose of this Plan is to provide eligible employees who wish to
invest in Safety-Kleen Corp. (the "Company") Common Stock, $.10 par value (the
"Common Stock"), a convenient and economical method of doing so. The Company
believes that employee participation in the ownership of the Company will be to
the mutual benefit of both the employees and the Company.
 
  2. Participating Employers. The Company shall at all times be a
"participating employer" for purposes of this Plan. Any other corporation shall
be deemed to be a participating employer under this Plan if on the date as of
which the corporation's status is being determined either (i) the corporation
is a domestic subsidiary of the Company and the Compensation Committee
designated by the Company's Board of Directors (the "Board") has not determined
to exclude such corporation from being a participating employer under this Plan
or (ii) the corporation is a foreign subsidiary and the Compensation Committee
has determined to include such corporation as a participating employer under
this Plan (provided that the following foreign subsidiaries shall be
participating employers under the Plan until and unless the Compensation
Committee otherwise decides: Safety-Kleen U.K. Limited, Safety-Kleen Canada,
Inc., Safety-Kleen Oil Recovery Co., and Safety-Kleen Oil Service, Inc. The
term "subsidiary" whenever it is used in this Plan has the meaning it is given
in Section 424(f) of the Internal Revenue Code of 1986 (the "Code"). A
subsidiary shall be deemed a "domestic subsidiary" if it is incorporated in any
jurisdiction within the United States and a majority of its employees are
residents of the United States. A subsidiary shall be deemed a "foreign"
subsidiary if it does not qualify as a domestic subsidiary.
 
  3. Eligible Employees. Every individual who is employed by a participating
employer on any particular Grant Date for options under this Plan shall be an
eligible employee on that Grant Date and shall be eligible to receive an option
granted on that Grant Date under this Plan, except that none of the following
individuals shall be an eligible employee on (or be entitled to receive any
options granted on) that particular Grant Date:
 
    (a) an individual who has not been continuously employed by a
  participating employer since January 1 of the year in which that Grant Date
  occurs (provided that an individual who is employed by a participating
  employer on that Grant Date and has been continuously employed since
  January 1 of the year in which that Grant Date occurs by any combination of
  one or more corporations who are participating employers on that Grant
  Date, a subsidiary of the Company which is not a participating employer,
  and any business acquired prior to that Grant Date by a participating
  employer or any such subsidiary shall not be disqualified from
  participation under this clause (a));
 
    (b) an employee who is employed on a part time basis on that Grant Date;
 
    (c) an individual who on that particular Grant Date is subject to Section
  16 of the Securities Exchange Act of 1934 with respect to the Company's
  Common Stock; or
 
    (d) an employee who after giving effect to the option which would be
  granted to him on that Grant Date would own (or hold options to purchase)
  shares possessing 5% or more of the total combined voting power or value of
  all classes of stock of the Company or of its parent, if any, or any
  subsidiary of the Company. In determining whether the stock ownership of an
  employee equal or exceeds this 5% limit, the rules of Code Section 424(d)
  shall apply, and stock which the employee may purchase under outstanding
  options (whether or not such options qualify for the tax treatment afforded
  by Code Section 421(a)) shall be treated as stock owned by the employee.
<PAGE>
 
  4. Annual Option Grants. Options shall be granted under this Plan on June 1
of each of the years 1995 through 1999 except that in each of those years in
which June 1 falls on a Saturday, Sunday, or federal holiday, the options in
that year shall be granted on the first date immediately following that June 1
which is not a Saturday, Sunday or a federal holiday. The date upon which
options are granted under the preceding sentence in any particular year shall
be the "Grant Date" for each of the options granted on that date. Each
individual who is an eligible employee on the Grant Date in any year shall be
granted an option on that Grant Date pursuant to the terms of this Plan.
 
  5. Employee Contributions.
 
  a. Election to Contribute. Each individual who qualifies as an eligible
employee on the Grant Date in any particular year shall have the right (subject
to the limitations in this Plan) to decide whether or not to participate in the
Plan with respect to the option granted on that Grant Date and to decide the
amount he or she will contribute to the Plan with respect to that option,
provided that:
 
    (1) no individual shall be entitled to contribute less than $2 per week
  during that contributions period; and
 
    (2) no individual shall be entitled to contribute more than 5% of the
  individual's compensation from all participating employers for the pay days
  occurring during the period beginning on June 1 of the year preceding the
  year in which that Grant Date occurs and ending on the May 31 immediately
  preceding that Grant Date (except that if such employee has been employed
  by participating employers for less than that entire period such amount may
  not exceed 5% of his or her annualized compensation for his or her period
  of employment with participating employers determined in such manner as the
  Compensation Committee shall approve).
 
In order to be entitled to participate in the Plan with respect to the option
granted on any particular Grant Date, an eligible employee must complete and
return a participation commitment on a form provided by the Company not later
than the June 30 immediately following the Grant Date in which the employee (i)
commits (subject to the provisions in this Plan) to the amount the employee
will contribute to the Plan with respect to that option (herein called the
employee's "committed amount" for that option) and (ii) authorizes payroll
deductions in such amount as will result in the full payment of the employee's
committed amount over a period (the "contributions period") of 52 weeks from
the date of the first payroll deduction.
 
  b. Payroll Deduction. Payroll deductions with respect to each option will
begin with the first pay day after July 15 immediately following the Grant Date
of such option and shall continue with respect to that option until 52 weeks of
the employee's pay have been subject to deduction or the option is terminated
pursuant to part 11, whichever event occurs first. Cash payments are not
permitted under the Plan without the Company's consent and unless the Company
otherwise prescribes, any direct cash contributions which are made will be
treated in the same way payroll deductions are treated under the terms of this
Plan. The amounts of payroll deductions (and any other contributions) from
employees participating in the Plan shall be held by the Company and may be
used by the Company for any corporate purpose.
 
  6. Option Price. Except as provided in the next sentence, the option price of
the Common Stock purchasable with each option granted under this Plan shall be
90% of the lower of (i) the fair market value (as defined below) of the Common
Stock on the Grant Date of the option or (ii) the fair market value of the
Common Stock on June 30 in the year after the year in which the Grant Date. For
purposes of the Plan, the "fair market value" of the Common Stock shall mean
the closing price per share as reported in the New York Stock Exchange-
Composite Transactions for the date for which fair market value is determined
provided that if no trading in the Common Stock on the New York Stock Exchange
shall be reported for that date, then the fair market value of the Common Stock
on that date shall be deemed to be the closing price for the Common Stock on
the latest day prior to that date upon which trading in the Common Stock shall
have occurred on the New York Stock
 
                                      A-2
<PAGE>
 
Exchange. If the price per share prescribed by the preceding sentence shall be
deemed lower than the lowest price which would permit this Plan to qualify as
an "employee stock purchase plan" for purposes of Section 423(b) of the Code,
then such lowest price shall be substituted for the price otherwise prescribed
by the preceding sentence.
 
  7. Number of Shares Issuable Upon Exercise of Each Option. Except as
otherwise provided in the next sentence, the number of shares which shall be
issuable to an eligible employee upon exercise of any particular option granted
to that employee under the Plan shall be the largest integral number of which
does not exceed the least of:
 
    (a) the quotient obtained by dividing (i) the option price for the shares
  (established as prescribed in Part 6) into (ii) the eligible employee's
  committed amount for that option (established as prescribed in part 5)
  (provided that if such quotient has a value to the right of the decimal
  point equal to .5 or more, the quotient shall be rounded up to the next
  higher integral number (e.g. a quotient of 100.5 would be rounded up to
  101)), or
 
    (b) twice the number obtained by dividing (i) 90% of the fair market
  value per share of the Common Stock on the Grant Date of the option into
  (ii) the eligible employee's committed amount for that option (established
  as prescribed in part 5), or
 
    (c) the number obtained by dividing $25,000 by the fair market value per
  share of the Common Stock on the Grant Date of the option, or
 
    (d) the maximum number of shares which can be purchased with the option
  without causing the individual to exceed the limit imposed by clause (d) in
  part 3 of this Plan.
 
In the event that exercise of options granted in any particular year would
cause the aggregate number of shares issued under this Plan to exceed the limit
imposed by Part 8, then the number of shares issuable by reason of the exercise
of any option granted in that year shall be reduced to the largest integral
number which is less than the number determined by multiplying the number of
shares which would have been issued by reason of the exercise of that option
but for this reduction times a fraction, the numerator of which is the number
of shares remaining available under this Plan prior to the exercise of any
options granted in that year and the denominator of which is the number of
shares which would be issued by reason of the exercise of all options granted
in that year but for this reduction.
 
  8. Shares of Common Stock Subject to the Plan. The maximum number of shares
of Common Stock that will be sold under the Plan is 1,500,000 subject to
adjustment as provided in part 16. Shares subject to any option that are not
sold for any reason (including termination of such option prior to exercise)
will be available for other options granted under this Plan.
 
  9. Exercise. Except as otherwise provided in part 11, each option granted in
any particular year shall automatically be exercised on June 30 of the
subsequent year (which shall be deemed the "exercise date" of that option). No
action on the part of the employee holding the option shall be necessary to
cause such exercise.
 
  10. Issuance of Common Stock Certificates. Certificates for shares of Common
Stock issuable by reason of the exercise of any option granted under this Plan
will be issued to the individual to whom such option was granted upon full
payment for the shares that individual is entitled to purchase pursuant to that
option. No one shall have any rights with respect to the shares issuable under
any option until full payment for those shares is made. No fractional share
shall be issued in connection with the exercise of any option.
 
  11. Option Termination.
 
  a. Election Not To Participate. In the event any eligible employee shall
return an election to the Company declining to make any contribution with
respect to any option granted to that employee,
 
                                      A-3
<PAGE>
 
then such option shall be deemed terminated and the employee shall not have any
right to purchase any shares under or by reason of the grant of that option.
The Company shall be entitled (but not obligated) to treat any eligible
employee from whom the Company has not received a written authorization for
payroll deductions with respect to any option by June 30 immediately following
the Grant Date of that option as having elected not to (i) make any
contributions to the Plan with respect to that option or (ii) purchase any
shares under that option, and in such event such option shall be deemed to have
terminated unexercised on that June 30.
 
  b. Employee's Right to Terminate Election. An employee may elect to terminate
any option granted to such employee under this Plan, provided that (i) such
right of termination may not be exercised after the May 31 which first occurs
after the Grant Date of the option (the "Termination Deadline") and (ii) the
termination right may only be exercised in whole to eliminate the right to
purchase all shares with that option. Such termination right shall be deemed to
be exercised when the employee shall deliver written notice of termination to
such representative of the Company as the Company shall designate from time to
time in connection with the Plan. The Company shall have the right to treat as
ineffective any attempt to terminate made other than in accordance with Company
procedures or any attempt to terminate in accordance with Company procedures
which occurs on or after the Termination Deadline.
 
  c. Termination of Employment. If prior to the exercise date of any option
granted under this Plan, the option holder's employment with all participating
employers shall terminate for any reason whatsoever (including but not limited
to death, retirement or termination by the employer with or without cause),
then such option shall terminate on the earliest date on which the option
holder shall not be employed by any participating employer. In no event shall
the grant of any option under this Plan be deemed to bestow on the person to
whom it is granted any right to employment or any right to damages in the event
employment is terminated for any reason or impair to any extent the Company's
right to terminate the employment of any individual.
 
  d. Payroll Deduction Refund. Within 60 days after the termination of any
option granted under this Plan, the Company shall pay to the option holder an
amount equal to the aggregate amounts deducted from such holder's pay with
respect to such option (excluding withholding taxes and other such deductions
which would not have been available to pay the purchase price for shares
subject to the option). No interest shall accrue or be paid on any amounts
deducted, held or refunded pursuant to this Plan.
 
  12. Nontransferability. No option granted under this Plan shall be assignable
or tranferable, and such option shall be exercisable only by the participating
employee during his lifetime. In the event the individual to whom an option was
granted under this Plan shall die or become disabled prior to the issuance of
the shares and/or payment due with respect to that option, then (i) such shares
and/or payment shall be issuable to the personal representative, administrator
or other person entitled thereto by reason of the death or disability and (ii)
the Company shall not be obligated to issue such shares or payment until it
receives such evidence as it shall require to establish to its satisfaction the
identity of the person entitled to receive such issuance.
 
  13. Administration. The Plan will be administered by the Compensation
Committee ("Committee") of the Board as selected from time to time by the
Board. The Committee may enact rules and regulations for the administration of
the Plan and may decide questions which may arise with respect to its
interpretation or application. The Committee's interpretations and decisions
with respect to the Plan shall be final and conclusive.
 
  14. Expenses. The Company will pay the expenses of administering the Plan.
 
                                      A-4
<PAGE>
 
  15. Effective Date of the Plan. The Plan shall become effective June 1, 1995,
subject to the approval, within 12 months before or after the adoption of the
Plan by the Board, of holders of at least a majority of the voting stock of the
Company voting in person or by proxy at a duly-held stockholders' meeting.
 
  16. Adjustments.
 
  a. Stock Splits. The number of shares subject to outstanding options, the
option price for which shares may be purchased upon the exercise of outstanding
options, and the number of shares available for options subsequently granted
under this Plan shall be appropriately adjusted to reflect any stock dividend,
stock split, or other action determined by the Committee to be similar to any
of the actions expressly indicated in this sentence in its substantive effect
upon this Plan or the options granted under this Plan.
 
  b. Changes in Capitalization. In the event of any reorganization,
recapitalization, reclassification, merger, consolidation or sale of all or
substantially all of the Company's assets followed by liquidation or other
transaction which is effected in such a way that holders of Common Stock are
entitled to receive securities or other assets with respect to or in exchange
for Common Stock (a "Capital Change"), then (except as otherwise provided in
paragraph c immediately below) the Committee shall make appropriate changes to
assure that each outstanding option thereafter represents the right to acquire,
in lieu of or in addition to the shares of Common Stock subject to such option,
such securities or assets which the holder of such option would have received
if all shares subject to such option had been owned by such holder at the
record date for such Capital Change by reason of such ownership. In connection
with a Capital Change, the Committee shall make such changes in each option as
the Committee determines appropriate to reflect such Capital Change. The Board
of Directors shall have the right to make such changes in the kind of
securities or other property available for options granted under this Plan
after any Capital Change as the Board deems appropriate to reflect such Capital
Change. Unless the Committee shall otherwise determine, a cash distribution on
the Company's Common Stock shall not constitute a Capital Change for purposes
of this Plan. If no previous adjustments under this part 16 have been made
prior to a Capital Change, then the shares subject to each option at the time
of the Capital Change shall be deemed to be equal to the largest integral
number which is less than the result determined by dividing the fair market
value per share of the Common Stock on the Grant Date into the option holder's
committed amount. If an adjustment shall have been made under this section 16
prior to such Capital Change, then the shares subject to the option shall be
the shares and/or other property which shall be subject to that option after
giving effect to all adjustments under this part 16 which shall have occurred
prior to that Capital Change.
 
  c. Alternative Treatment. In lieu of making the adjustment prescribed in the
preceding paragraph b, the Compensation Committee may with respect to any
Capital Change
 
    (i) elect to make a cash payment to each option holder equal to the sum
  of the amount of payroll deductions made with respect to that option
  holder's option plus the product derived by multiplying the number of
  shares subject to the option times the amount by which the fair market
  value per share of the Common Stock at the time of the Capital Change shall
  exceed the fair market value per share of the Common Stock at the Grant
  Date of that option or
 
    (ii) if the fair market value of the Common Stock when the Capital Change
  occurs shall be less than the fair market value of the Common Stock on the
  Grant Date of the option, elect to refund to each option holder the
  aggregate amount of payroll deductions made with respect to that holder's
  option, or
 
    (iii) grant each option holder the right to purchase the shares and/or
  other property subject to his or her option immediately after giving effect
  to the adjustment prescribed in paragraph
 
                                      A-5
<PAGE>
 
  6b at a purchase price equal to the amount by which the option holder's
  commited amount shall exceed payroll deductions made with respect to his or
  her option but subject to the condition that if the purchase price is not
  paid within 30 days after notice of such right is given the option holder,
  the option holder shall only be entitled to receive a refund without
  interest of such holder's payroll deductions with respect to the option.
 
If the Committee makes any of the elections prescribed in this paragraph c with
respect to any Capital Change, then each option holder's rights flowing from
that election as prescribed in this paragraph c shall be in lieu of (and shall
extinguish) all other rights which that holder might otherwise have had with
respect to such option or with respect to refund of the payroll deductions
previously made with respect to that option.
 
  d. Final Determinations. The determination of the Committee or the Board as
to the nature of the adjustment to be made in response to any event
contemplated by this Part 16 shall be binding upon all persons concerned.
 
  17. Amendment and Termination. No option may be granted nor may any employee
elect to participate in the Plan after December 31, 1999. The Board may at any
time terminate the Plan or make such changes or amendments as it shall deem
advisable without the approval of the stockholders of the Company. Without the
consent of an employee who has elected to participate in the Plan no
termination, modification or amendment of the Plan may adversely affect the
rights of such employee under options granted prior to such termination,
modification or amendment.
 
  18. Government Regulations. The Plan and the grant and exercise of options
and the obligation of the Company to sell and deliver shares under such options
shall be subject to all applicable laws, rules and regulations and to such
approvals by any governmental agency as may be required.
 
  19. Internal Revenue Code Requirements Control. The Company's objective is
that the Plan shall at all times constitute an "employee stock purchase plan"
within the meaning of Section 423(b) of the Code and that each option granted
under this Plan constitute an option granted under such an employee stock
purchase plan and accordingly: (i) all provisions in this Plan and in each
option granted under this Plan shall be interpreted and applied in a manner
which will satisfy that objective and (ii) if any requirement necessary to
satisfy that objective is not expressly contained in the Plan or such option,
then such requirement is by this reference incorporated herein and therein.
 
                                      A-6
<PAGE>
 
                               Printed on recycled paper
                        LOGO
<PAGE>

P R O X Y
 
[SAFETY-KLEENL LOGO]
    1000 NORTH RANDALL ROAD . ELGIN, ILLINOIS 60123-1499

              PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS
 
Russell A. Gwillim and Karl G. Otzen, and either of them are appointed Proxies,
with power of substitution, to vote all stock of the undersigned at the annual
meeting of shareholders to be held May 12, 1995 at 10:00 a.m. at The Westin Ho-
tel O'Hare, 6100 River Road, Rosemont, Illinois 60018, and at any adjournment
thereof, upon the matters mentioned hereafter, and in their discretion upon
such matters as may properly come before said meeting. Receipt of Notice, dated
March 24, 1995 of Annual Meeting and accompanying Proxy Statement is acknowl-
edged, and any Proxy previously given is revoked.
 
Election of Directors, Nominees:          COMMENTS: (change of address)       
Russell A. Gwillim, Edgar D. Jannotta,                                       
Karl G. Otzen and Marcia E. Williams      -----------------------------------
                                                                             
                                          -----------------------------------
                                                                             
                                          -----------------------------------
                                                                             
                                          ----------------------------------- 
                                         
                                          (If you have written in the above    
                                          space, please mark the corresponding 
                                          box on the reverse side of this      
                                          card)                                 


YOU ARE ENCOURAGED TO SPECIFY YOUR CHOICES BY MARKING THE APPROPRIATE BOXES,
SEE REVERSE SIDE, BUT YOU NEED NOT MARK ANY BOXES IF YOU WISH TO VOTE IN
ACCORDANCE WITH THE BOARD OF DIRECTORS' RECOMMENDATIONS. THE PROXY COMMITTEE
CANNOT VOTE YOUR SHARES UNLESS YOU SIGN AND RETURN THIS CARD.
             

                                                                     SEE REVERSE
                                                                         SIDE

--------------------------------------------------------------------------------


[X] Please mark your votes as in this example.                          | 2897
                                                                          ----

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED HEREIN.
IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED FOR ELECTION OF DIRECTORS AND
FOR PROPOSAL 2.

--------------------------------------------------------------------------------
    THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR PROPOSAL 1 AND PROPOSAL 2.
--------------------------------------------------------------------------------

1. Election of Directors, nominees: R. A. Gwillim, E. D. Jannotta, K. G. Otzen
   and M. E. Williams
   
   FOR    WITHHELD
   [_]      [_]

   For, except vote withheld from the following nominee(s):

   ---------------------------------------------------------

2. Approval to adopt the 1995 Employee Stock Purchase Plan

   FOR    AGAINST    ABSTAIN
   [_]      [_]        [_]

   Change of Address Comments on Reverse Side
   [_]
                                      

SIGNATURE(S) __________________________________________________DATE __________

NOTE: Please sign exactly as name appears hereon. Joint owners should each sign.
      When signing as attorney, executor, administrator, trustee or guardian,
      please give full title as such.

 The signer hereby revokes all proxies heretofore given by the signer to vote
 at said meeting or any adjournments thereof.



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