SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                                 March 21, 2003
                     ----------------------------------------
                        (Date of earliest event reported)

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

         Delaware                   001-8368                51-0228924
         (State of             (Commission File No.)      (IRS Employer
       Incorporation)                                     Identification No.


                         1301 Gervais Street, Suite 300,
                         Columbia, South Carolina 29201

          (Address of principal executive offices, including zip code)


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


                                 Not Applicable
                   -------------------------------------------
          (Former name or former address, if changed since last report)







ITEM 5. OTHER EVENTS

The  Company  executed  the FOURTH  AMENDMENT  dated as of March 21, 2003 to the
Second  Amended  and  Restated  Debtor  in  Possession  Credit  Agreement  among
SAFETY-KLEEN SERVICES, INC., the financial institutions or entities from time to
time parties  thereto,  THE  TORONTO-DOMINION  BANK,  HOUSTON AGENCY and TORONTO
DOMINION  (TEXAS),  INC., as letter of credit  issuing banks,  TORONTO  DOMINION
(TEXAS),  INC., as administrative agent and THE CIT GROUP/BUSINESS CREDIT, INC.,
as collateral agent and underwriter initially dated as of June 11, 2000, amended
and restated as of July 19, 2000 and as further amended and restated as of March
22, 2002 and amended by the First  Amendment  dated as of September 3, 2002, the
Second  Amendment dated as of September 6, 2002 and the Third Amendment dated as
of October 24, 2002 (the "Credit Agreement"). The Amendment, among other things,
has the effect of extending the termination  date of the Credit Agreement to the
earliest  to occur of (a) July 31,  2003,  (b) the  effective  date of a Plan of
Reorganization,  and  (c)  the  earlier  termination  of  the  Revolving  Credit
Commitments in accordance with the terms of the Credit Agreement.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

(c) Exhibits.

Exhibit No.                 Description

(4)(a)  FOURTH  AMENDMENT  dated as of March 21, 2003 to the Second  Amended and
Restated  Debtor in Possession  Credit  Agreement among  SAFETY-KLEEN  SERVICES,
INC., the financial  institutions or entities from time to time parties thereto,
THE TORONTO-DOMINION BANK, HOUSTON AGENCY and TORONTO DOMINION (TEXAS), INC., as
letter  of  credit   issuing  banks,   TORONTO   DOMINION   (TEXAS),   INC.,  as
administrative  agent and THE CIT  GROUP/BUSINESS  CREDIT,  INC.,  as collateral
agent and underwriter  initially dated as of June 11, 2000, amended and restated
as of July 19, 2000 and as further amended and restated as of March 22, 2002 and
amended  by the First  Amendment  dated as of  September  3,  2002,  the  Second
Amendment  dated as of  September  6, 2002 and the Third  Amendment  dated as of
October 24, 2002.








                                                     SIGNATURE

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



                                   SAFETY-KLEEN CORP.



Date: March 25, 2003               By:  /s/ JAMES K. LEHMAN
                                      ----------------------------------------
                                      James K. Lehman
                                      Senior Vice President, General Counsel and
                                      Secretary





                                  EXHIBIT INDEX

(4)(a)   FOURTH  AMENDMENT  dated as of March 21, 2003 to the Second Amended and
         Restated  Debtor in  Possession  Credit  Agreement  among  SAFETY-KLEEN
         SERVICES,  INC.,  the financial  institutions  or entities from time to
         time parties thereto,  THE  TORONTO-DOMINION  BANK,  HOUSTON AGENCY and
         TORONTO  DOMINION  (TEXAS),  INC., as letter of credit  issuing  banks,
         TORONTO DOMINION  (TEXAS),  INC., as  administrative  agent and THE CIT
         GROUP/BUSINESS  CREDIT,  INC.,  as  collateral  agent  and  underwriter
         initially  dated as of June 11,  2000,  amended and restated as of July
         19, 2000 and as further  amended and  restated as of March 22, 2002 and
         amended by the First  Amendment  dated as of  September  3,  2002,  the
         Second  Amendment dated as of September 6, 2002 and the Third Amendment
         dated as of October 24, 2002.