LAIDLAW ENVIRONMENTAL SERVICES INC
S-8, 1998-10-16
HAZARDOUS WASTE MANAGEMENT
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<PAGE>   1



                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                              --------------------

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933


                      Laidlaw Environmental Services, Inc.
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

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


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

                     Safety-Kleen Corp. 401(k) Savings Plan
                     --------------------------------------
                            (Full title of the plan)


                              Henry H. Taylor, Esq.
                      Laidlaw Environmental Services, Inc.
                         1301 Gervais Street, Suite 300
                         Columbia, South Carolina 29201
                     ---------------------------------------
                     (Name and address of agent for service)

Telephone number, including area code, of agent for service: (803) 933-4200


                                             CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------
                                                   Proposed maximum          Proposed maximum           Amount of
Title of securities         Amount to be           offering price per        aggregate offering         registration
to be registered(1)         registered(2)          share                     price                      fee
- --------------------------------------------------------------------------------------------------------------------
<S>                        <C>                     <C>                       <C>                        <C>
Common stock, par
value $1.00 per share      5,000,000 shares            $2.3438(3)               $1,111,900              $345.71
- --------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) In addition, pursuant to Rule 416(c) under the Securities Act of 1933 this
    registration statement also covers an indeterminate amount of interests to
    be offered and sold pursuant to the employee benefit plan described herein.

(2) Together with an indeterminable number of additional shares which may be
    necessary to adjust the number of shares reserved for issuance pursuant to
    such plan as the result of any future stock split, stock dividend or similar
    adjustment of the registrant's outstanding common stock.

(3) Estimated pursuant to Rule 457(h) under the Securities Act of 1933 solely
    for the purpose of calculating the registration fee based on the average of
    the high and low prices of Laidlaw Environmental Services, Inc. common stock
    as reported on the New York Stock Exchange, Inc. Composite Transactions
    Reporting System on October 14, 1998.

<PAGE>   2

          PART I: INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

ITEM 1. Plan Information*

ITEM 2. Registrant Information and Employee Plan Annual Information*

________________________

* Information required by Part I to be contained in the Section 10(a)
  prospectus is omitted from the registration statement in accordance with
  Note to Part I of Form S-8.

<PAGE>   3

          PART II: INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

     The registrant hereby incorporates by reference in this registration
statement the following documents:

        (a) The registrant's annual report on Form 10-K for the year ended
            August 31, 1997;

        (b) The Plan's annual report on Form 11-K for the year ended December
            31, 1997;

        (c) The registrant's quarterly reports on Form 10-Q for the quarters
            ended November 30, 1997, as amended on July 17, 1998; February 28,
            1998, as amended on July 17, 1998; and May 31, 1998, as amended on
            July 17, 1998.

        (d) The registrant's current reports on Form 8-K dated November 5, 1997,
            as amended on December 31, 1997; November 14, 1997 and November 14,
            1997, as amended on January 2, 1998; November 19, 1997, as amended
            December 31, 1997; November 21, 1997, as amended December 31, 1997;
            November 25, 1997, as amended December 31, 1997; December 8, 1997;
            December 19, 1997; January 28, 1998; February 5, 1998; February 9,
            1998; February 9, 1998; February 11, 1998; February 17, 1998;
            February 17, 1998; February 18, 1998; February 20, 1998; February
            24, 1998, as amended on February 24, 1998; February 25, 1998;
            February 26, 1998; March 5, 1998; March 6, 1998; March 10, 1998;
            March 12, 1998; March 13, 1998; March 16, 1998; March 19, 1998;
            March 30, 1998; April 1, 1998; April 6, 1998; April 8, 1998; April
            20, 1998, as amended on April 22, 1998; May 18, 1998; May 27, 1998;
            June 25, 1998 and July 9, 1998.

        (e) The description of the registrant's common stock, par value $1.00
            per share, contained in the registrant's current report on Form 8-K,
            dated July 29, 1997.

All documents subsequently filed by the registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, prior to the filing
of a post-effective amendment to this registration statement which indicates
that all securities offered hereby have been sold or which deregisters all
securities remaining unsold, shall be deemed to be incorporated by reference in
this registration statement and to be a part hereof from the date of filing of
such documents. Any statement contained in a document incorporated or deemed to
be incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this registration statement to the extent that a statement
contained herein or in any other subsequently filed document that also is or is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this registration
statement.

<PAGE>   4

ITEM 4. DESCRIPTION OF SECURITIES

     Not applicable.

ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL

     Not applicable.

ITEM 6. INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Subsection (a) of Section 145 of the General Corporation Law of the State
of Delaware empowers a corporation to indemnify any person who was or is a party
or is threatened to be made a party to any threatened, pending or completed
action, suit or proceeding, whether civil, criminal, administrative or
investigative (other than an action by or in the right of the corporation) by
reason of the fact that such person is or was a director, officer, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action, suit or proceeding if
such person acted in good faith and in a manner such person reasonably believed
to be in or not opposed to the best interests of the corporation and, with
respect to any criminal action or proceeding, had no reasonable cause to believe
such person's conduct was unlawful.

     Subsection (b) of Section 145 empowers a corporation to indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that such
person acted in any of the capacities set forth above, against expenses
(including attorneys' fees) actually and reasonably incurred by such person in
connection with the defense or settlement of such action or suit if such person
acted in good faith and in a manner such person reasonably believed to be in or
not opposed to the best interests of the corporation, except that no
indemnification shall be made in respect of any claim, issue or matter as to
which such person shall have been adjudged to be liable to the corporation
unless and only to the extent that the Court of Chancery or the court in which
such action or suit was brought shall determine upon application that, despite
the adjudication of liability but in view of all the circumstances of the case,
such person is fairly and reasonably entitled to indemnity for such expenses
which the Court of Chancery or such other court shall deem proper.

     Subsection (c) of Section 145 provides that to the extent a present or
former director or officer of a corporation has been successful on the merits or
otherwise in defense of any action, suit or proceeding referred to in
subsections (a) and (b) of Section 145, or in defense of any claim, issue or
matter therein, such person shall be indemnified against expenses (including
attorneys' fees) actually and reasonably incurred by such person in connection
therewith.

     Other subsections of Section 145: (i) provide that indemnification 





<PAGE>   5

provided for by Section 145 shall not be deemed exclusive of any other rights to
which the indemnified party may be entitled; (ii) provide that indemnification
provided for by Section 145 shall, unless otherwise provided when authorized or
ratified, continue as to a person who has ceased to be a director, officer,
employee or agent and shall inure to the benefit of such person's heirs,
executors and administrators; and (iii) empower the corporation to purchase and
maintain insurance on behalf of any person who is or was a director, officer,
employee or agent of the corporation, or any person who is or was serving at the
request of the corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise, against any
liability asserted against such person and incurred by such person in any such
capacity, or arising out of such person's status as such, whether or not the
corporation would have the power to indemnify such person against such
liabilities under Section 145.

     The registrant's Bylaws provide that the registrant shall indemnify and
advance expenses to its directors, officers, employees, agents or fiduciaries of
the registrant to the fullest extent permitted by Delaware law.

     Section 102(b)(7) of the General Corporation Law of the State of Delaware
provides that a certificate of incorporation may contain a provision eliminating
or limiting the personal liability of a director to a corporation or its
stockholders for monetary damages for breach of fiduciary duty as a director,
provided that such provision shall not eliminate or limit the liability of a
director (i) for any breach of the director's duty of loyalty to the corporation
or its stockholders, (ii) for acts or omissions not in good faith or which
involve intentional misconduct or a knowing violation of law, (iii) under
Section 174 of the General Corporation Law of the State of Delaware or (iv) for
any transaction from which the director derived an improper personal benefit.
Article Tenth of the registrant's Restated Certificate of Incorporation, as
amended, eliminates the personal liability of the registrant's directors for
monetary damages for breach of fiduciary duty except to the extent that such
elimination of liability is not permitted under Delaware corporate law.

     The registrant also maintains liability insurance for its directors and
officers which provides for coverage against loss from claims made against
directors and officers in their capacity as such, including liabilities under
the Securities Act of 1933, as amended.

ITEM 7. EXEMPTION FROM REGISTRATION CLAIMED

     Not applicable.

ITEM 8. EXHIBITS

     See Exhibit Index.

     The registrant hereby undertakes to submit the Plan and any amendments
thereto to the Internal Revenue Service in a timely manner and to make all
changes required by the Internal Revenue Service in order to qualify the Plan.





<PAGE>   6

ITEM 9. UNDERTAKINGS

        (a) The undersigned registrant hereby undertakes:

            (1) To file, during any period in which offers or sales are being
made, a post-effective amendment to this registration statement:

                (A) To include any prospectus required by Section 10(a)(3) of
the Securities Act of 1933;

                (B) To reflect in the prospectus any facts or events arising
after the effective date of the registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the registration
statement; and

                (C) To include any material information with respect to the plan
of distribution not previously disclosed in the registration statement or any
material change to such information in the registration statement;

PROVIDED, HOWEVER, that paragraphs (a)(1)(A) and (a)(1)(B) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed with or furnished to the
Securities and Exchange Commission by the registrant pursuant to Section 13 or
Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by
reference in the registration statement.

            (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

            (3) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

        (b) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

        (c) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, or otherwise,
the registrant has been advised that in the opinion of the 





<PAGE>   7

Securities and Exchange Commission such indemnification is against public policy
as expressed in the Act and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
the registrant of expenses incurred or paid by a director, officer or
controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.

<PAGE>   8

                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-8 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Columbia, State of South Carolina, on October 15,
1998.

                                          LAIDLAW ENVIRONMENTAL SERVICES, INC.



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


                                POWER OF ATTORNEY

      KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below hereby constitutes and appoints Kenneth W. Winger and Paul R. Humphreys,
and each of them acting individually, as his attorneys-in-fact, each with full
power of substitution, for him in any and all capacities, to sign any and all
amendments to this registration statement and to file the same, with exhibits
thereto and other documents in connection therewith, with the Securities and
Exchange Commission, hereby ratifying and confirming our signatures as they may
be signed by our said attorney to any and all amendments to said registration
statement.

      Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the date indicated.

<TABLE>
<CAPTION>
Signature                              Title                       Date
- ---------                              -----                       ----

<S>                              <C>                             <C>
/s/ Kenneth W. Winger            Director, President             October 6, 1998
- ------------------------         and Chief Executive
    Kenneth W. Winger            Officer (principal
                                 Executive officer)

/s/ Paul R. Humphreys            Chief Financial Officer         October 6, 1998
- ------------------------         (principal financial
    Paul R. Humphreys            officer and principal
                                 accounting officer)

/s/ James R. Bullock             Director, Chairman of           October 6, 1998
- ------------------------         the Board
    James R. Bullock


/s/ John R. Grainger             Director                        October 6, 1998
- ------------------------
    John R. Grainger
</TABLE>






<PAGE>   9



<TABLE>
<S>                              <C>                             <C>
/s/ Leslie W. Haworth            Director                        October 6, 1998
- ------------------------
    Leslie W. Haworth


/s/ John W. Rollins, Sr.         Director                        October 6, 1998
- ------------------------
    John W. Rollins, Sr.


/s/ John W. Rollins, Jr.         Director                        October 6, 1998
- ------------------------
    John W. Rollins, Jr.


/s/ David E. Thomas, Jr.         Director                        October 6, 1998
- ------------------------
    David E. Thomas, Jr.


/s/ Henry B. Tippie              Director                        October 6, 1998
- ------------------------
    Henry B. Tippie


/s/ James L. Wareham             Director                        October 6, 1998
- ------------------------
    James L. Wareham


/s/ Grover C. Wrenn              Director                        October 6, 1998
- ------------------------
    Grover C. Wrenn
</TABLE>

<PAGE>   10

      Pursuant to the requirements of the Securities Act of 1933, the committee
which administers the Safety-Kleen Corp. 401(k) Savings Plan has duly caused
this registration statement to be signed on its behalf by the undersigned,
thereunto duly authorized in the City of Columbia, State of South Carolina on
October 15, 1998

Safety-Kleen Corp. 401(k) Savings Plan

By:  /s/ Robert Arquilla
   ------------------------------------
         Robert Arquilla
Its:     Vice President, Administration





<PAGE>   11

                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
Exhibit
- -------

<C>               <C>
4.1(a)             Restated Certificate of Incorporation of the registrant,
                   filed as Exhibit 3(a) to the registrant's Form 10-Q for the
                   quarter ended May 31, 1997, is incorporated herein by
                   reference.

4.1(b)             Certificate of Correction of the registrant, filed as Exhibit
                   3(a)(1) to the registrant's Annual Report on Form 10-K for
                   the year ended August 31, 1997, is incorporated herein by
                   reference.

4.1(c)             Amendment to the Restated Certificate of Incorporation of the
                   registrant, filed as Exhibit 3(a)(2) to the registrant's
                   quarterly report on Form 10-Q for the quarter ended February
                   28, 1998, is incorporated herein by reference.

4.2                Bylaws of the registrant, as amended, filed as Exhibit 3(ii)
                   to the registrant's current report on Form 8-K dated July 29,
                   1997, is incorporated herein by reference.

4.3                Safety-Kleen Corp. 401(k) Savings Plan as Amended and
                   Completely Restated through July 1, 1998.

23.1               Consent of Pricewaterhouse Coopers, LLP.

24.1               Power of Attorney (included as part of the signature page of
                   this registration statement).
</TABLE>





<PAGE>   1

                                                                        10/12/98






                                   EXHIBIT 4.3


                     SAFETY-KLEEN CORP. 401(K) SAVINGS PLAN


               (FORMERLY THE LAIDLAW ENVIRONMENTAL SERVICES, INC.
                              401(K) SAVINGS PLAN)



                       AS AMENDED AND COMPLETELY RESTATED
                             THROUGH AUGUST 1, 1998





<PAGE>   2


                     SAFETY-KLEEN CORP. 401(K) SAVINGS PLAN



                                TABLE OF CONTENTS

<TABLE>
<S>               <C>                                                                     <C>
ARTICLE I
                           ESTABLISHMENT OF THE PLAN....................................   7
1.01              NAME OF PLAN..........................................................   7
1.02              ADOPTION OF PLAN......................................................   7
1.03              TRUST AGREEMENT.......................................................   7
1.04              QUALIFICATION OF THE PLAN.............................................   7
1.05              PURPOSE OF THE PLAN...................................................   8
1.06              EXCLUSIVE BENEFIT.....................................................   8

ARTICLE II
                           DEFINITIONS..................................................   9
                  ACCOUNT OR ACCOUNTS...................................................   9
                  ACTUAL DEFERRAL PERCENTAGE............................................  10
                  INTENTIONALLY OMITTED.................................................  11
                  ADOPTION AGREEMENT....................................................  11
                  AFFILIATE.............................................................  11
                  ANNIVERSARY DATE......................................................  11
                  AUTHORIZED LEAVE OF ABSENCE...........................................  11
                  BENEFICIARY...........................................................  11
                  BENEFITS COMMITTEE....................................................  11
                  BOARD OF DIRECTORS....................................................  11
                  BREAK IN SERVICE......................................................  12
                  CODE..................................................................  12
                  COMPANY STOCK.........................................................  12
                  COMPENSATION..........................................................  13
                  COMPUTATION PERIODS...................................................  13
                  CONTRIBUTION PERCENTAGE...............................................  13
                  DISABILITY............................................................  14
                  EARLY RETIREMENT DATE.................................................  14
                  EFFECTIVE DATE........................................................  14
                  EMPLOYEE..............................................................  14
                  EMPLOYMENT COMMENCEMENT DATE..........................................  15
                  EMPLOYER..............................................................  15
                  ENTRY DATE............................................................  15
                  ERISA.................................................................  15
                  FAMILY MEMBER.........................................................  15
</TABLE>


                                        i

<PAGE>   3

<TABLE>
<S>               <C>                                                                     <C>
ARTICLE II
                  FIDUCIARIES...........................................................  15
                  FORMER PARTICIPANT....................................................  16
                  HIGHLY COMPENSATED EMPLOYEE...........................................  16
                  HOUR OF SERVICE.......................................................  18
                  INCOME................................................................  19
                  INVESTMENT COMMITTEE..................................................  19
                  INVESTMENT MANAGER....................................................  19
                  LEASED EMPLOYEE(S)....................................................  19
                  LIMITATION YEAR.......................................................  20
                  MONTH OF SERVICE......................................................  20
                  NORMAL RETIREMENT AGE.................................................  20
                  NORMAL RETIREMENT DATE................................................  20
                  PARTICIPANT...........................................................  20
                  PAYROLL PERIOD........................................................  20
                  PERIOD OF SERVICE.....................................................  20
                  PERIOD OF SEVERANCE...................................................  20
                  PLAN..................................................................  20
                  PLAN ADMINISTRATOR (ALSO REFERRED TO AS
                  "ADMINISTRATOR" AND "COMMITTEE")......................................  20
                  PLAN SPONSOR (ALSO REFERRED TO AS "SPONSOR")..........................  20
                  PLAN YEAR.............................................................  21
                  PRIOR PLAN............................................................  21
                  REEMPLOYMENT COMMENCEMENT DATE........................................  21
                  SERVICE SPANNING RULES................................................  21
                  SEVERANCE FROM SERVICE DATE...........................................  21
                  SPOUSE..................................................................21
                  SUBSIDIARY............................................................  21
                  TEMPORARY EMPLOYEE....................................................  22
                  TOP PAID GROUP........................................................  22
                  TRUST AGREEMENT.......................................................  22
                  TRUST FUND, TRUST OR FUND.............................................  22
                  TRUSTEE.................................................................22
                  VALUATION DATE........................................................  22
                  YEAR OF SERVICE FOR ELIGIBILITY, PARTICIPATION AND
                  VESTING PURPOSES......................................................  22

ARTICLE III
                           ELIGIBILITY AND PARTICIPATION................................  25
3.01              ELIGIBILITY FOR PARTICIPATION.........................................  25
3.02              APPLICATION FOR PARTICIPATION.........................................  25
3.03              OMISSION OF ELIGIBLE EMPLOYEE.........................................  26
3.04              INCLUSION OF INELIGIBLE EMPLOYEE......................................  26
3.05              PARTICIPATION BY FORMER PARTICIPANTS..................................  26
</TABLE>


                                       ii

<PAGE>   4

<TABLE>
<C>               <C>                                                                     <C>
ARTICLE III
3.06              IMMEDIATE PARTICIPATION IN CASE OF PLAN MERGERS.......................  27

ARTICLE IV
                           ALLOCATION OF CONTRIBUTIONS AND FORFEITURES..................  28
4.01              PRETAX CONTRIBUTIONS..................................................  28
4.02              DISCRETIONARY EMPLOYER CONTRIBUTIONS..................................  30
4.03              MATCHING EMPLOYER CONTRIBUTIONS.......................................  31
4.04              INTENTIONALLY OMITTED.................................................  31
4.05              ALLOCATION OF FORFEITURES.............................................  31
4.06              ROLLOVERS AND TRANSFERS...............................................  32
4.07              PRE-TAX LIMITATIONS...................................................  34
4.08              LIMITATIONS ON EMPLOYER CONTRIBUTIONS.................................  38
4.09              ANNUAL ADDITIONS......................................................  42
4.10              RETURN OF EMPLOYER CONTRIBUTIONS......................................  43

ARTICLE V
                           ALLOCATION OF GAINS AND LOSSES...............................  45
5.01              VALUATION OF THE TRUST FUND...........................................  45
5.02              PRIORITY OF ALLOCATIONS TO ACCOUNTS...................................  45
5.03              ALLOCATION OF DIVIDENDS...............................................  45
5.04              PARTICIPANT-DIRECTED INVESTMENTS......................................  45

ARTICLE VI
                           DETERMINATION AND DISTRIBUTION OF BENEFITS...................  46
6.01              VESTING OF ACCOUNTS...................................................  46
6.02              FORFEITURES...........................................................  48
6.03              CHANGES IN VESTING SCHEDULE...........................................  49
6.04              INVOLUNTARY CASH-OUT..................................................  49
6.05              REINSTATEMENT OF ACCOUNT..............................................  49
6.06              SEPARATE ACCOUNT BALANCES.............................................  50
6.07              DETERMINATION OF BENEFITS UPON NORMAL RETIREMENT......................  50
6.08              DETERMINATION OF BENEFITS UPON DISABILITY.............................  50
6.09              DETERMINATION OF BENEFITS UPON DEATH..................................  41
6.10              DETERMINATION OF BENEFITS UPON TERMINATION OF
                  EMPLOYMENT............................................................  51
6.11              ERISA REQUIRED COMMENCEMENT DATE......................................  51
6.12              MANDATORY COMMENCEMENT DATE...........................................  52
6.13              REQUIRED PARTICIPANT OR BENEFICIARY CONSENT TO
                  DISTRIBUTE............................................................  53
6.14              FORM OF PAYMENT BEFORE JULY 1, 1996...................................  53
6.14A             FORM OF PAYMENT AFTER JUNE 30, 1996...................................  54
6.15              AMOUNTS NOT DETERMINED................................................  55
</TABLE>


                                      iii

<PAGE>   5

<TABLE>
<C>               <C>                                                                     <C>
ARTICLE VI
6.16              NO EMPLOYER DISCRETION IN BENEFIT SELECTION OR
                  DISTRIBUTION..........................................................  55
6.17              REQUIRED INFORMATION..................................................  55
6.18              LIMITATIONS ON BENEFITS AND DISTRIBUTIONS.............................  55
6.19              DIRECT ROLLOVER.......................................................  56
6.20              CALCULATION OF DISTRIBUTIONS AFTER APRIL 1, 1996......................  57
6.21              DISTRIBUTIONS IN CONNECTION WITH DISPOSITION OF
                  ASSETS OR SUBSIDIARIES................................................  57
6.22              DISTRIBUTIONS TO ALTERNATE PAYEES.....................................  57

ARTICLE VII
                           WITHDRAWALS AND LOANS........................................  58
7.01              WITHDRAWALS, IN GENERAL...............................................  58
7.02              HARDSHIP WITHDRAWALS..................................................  58
7.03              LOANS.................................................................  60
7.04              WITHDRAWALS FROM ROLLOVER ACCOUNTS....................................  60
7.05              IN-SERVICE WITHDRAWALS AFTER AGE 59-1/2...............................  60

ARTICLE VIII
                           ADMINISTRATION OF PLAN.......................................  61
8.01              APPOINTMENT AND TERM OF COMMITTEE.....................................  61
8.02              POWERS AND RESPONSIBILITIES...........................................  61
8.03              ALLOCATION OF DUTIES AMONG COMMITTEE MEMBERS..........................  65
8.04              COMPENSATION OF COMMITTEE MEMBERS.....................................  65
8.05              MANNER OF ACTING......................................................  65
8.06              RECORDS AND REPORTS...................................................  66
8.07              INFORMATION FROM EMPLOYER.............................................  66
8.08              PAYMENT OF EXPENSES...................................................  66
8.09              DISCRETION............................................................  66
8.10              LIABILITY OF THE COMMITTEE............................................  67
8.11              EMPLOYER LIABILITY....................................................  67
8.12              BONDING.................................................................67
8.13              INDEMNIFICATION.......................................................  67
8.14              MULTIPLE FIDUCIARY CAPACITIES.........................................  68
8.15              INFORMATION TO PARTICIPANTS...........................................  68
8.16              RELIANCE..............................................................  68
8.17              NO DECISIONS BY INTERESTED PARTY IN OWN BENEFIT.......................  68

ARTICLE IX
                           PARTICIPANT ADMINISTRATIVE PROVISIONS AND
                           CLAIMS PROCEDURE.............................................  69
9.01              BENEFICIARY DESIGNATIONS..............................................  69
9.02              NO BENEFICIARY DESIGNATIONS...........................................  69
</TABLE>


                                       iv

<PAGE>   6

<TABLE>
<C>               <C>                                                                     <C>
ARTICLE IX
9.03              PERSONAL INFORMATION TO COMMITTEE.....................................  70
9.04              ADDRESS FOR NOTIFICATION..............................................  70
9.05              LOCATION OF PARTICIPANT OR BENEFICIARY UNKNOWN........................  70
9.06              NOTICE OF CHANGE IN PLAN TERMS........................................  70
9.07              REVIEW OF PLAN DOCUMENTS AND INFORMATION..............................  70
9.08              CLAIMS PROCEDURE......................................................  71
9.09              CLAIMS REVIEW PROCEDURE...............................................  71
9.10              INDIVIDUALLY DIRECTED INVESTMENTS.....................................  71

ARTICLE X
                           TOP-HEAVY PROVISIONS.........................................  73
10.01             GENERALLY.............................................................  73
10.02             MAXIMUM PAY...........................................................  73
10.03             MINIMUM CONTRIBUTIONS.................................................  73
10.04             SUPER TOP-HEAVY PLANS.................................................  74
10.05             DETERMINATION OF TOP HEAVINESS........................................  75
10.06             DETERMINATION OF SUPER TOP HEAVINESS..................................  75
10.07             CALCULATION OF TOP-HEAVY RATIOS.......................................  75
10.08             CUMULATIVE ACCOUNTS ACCRUED BENEFITS..................................  75
10.09             OTHER DEFINITIONS.....................................................  76

ARTICLE XI

                           AMENDMENT, TERMINATION AND MISCELLANEOUS 
                           PLAN PROVISIONS..............................................  79
11.01             INTENT TO QUALIFY.....................................................  79
11.02             EXCLUSIVE BENEFIT/PROHIBITION ON DIVERSION OF ASSETS..................  79
11.03             ERISA STATUS..........................................................  79
11.04             NONDISCRIMINATION.....................................................  79
11.05             NONALIENATION OF BENEFITS.............................................  79
11.06             APPLICABLE LAW........................................................  80
11.07             TITLES AND HEADINGS NOT TO CONTROL....................................  80
11.08             GENDER AND NUMBER.....................................................  80
11.09             SEVERABILITY..........................................................  81
11.10             NO CONTRACT OF EMPLOYMENT.............................................  81
11.11             NO DUPLICATION OF BENEFITS............................................  81
11.12             LEGAL ACTION..........................................................  81
11.13             PROTECTIVE CLAUSE.....................................................  81
11.14             ACTION BY EMPLOYER OR SPONSOR.........................................  81
11.15             RIGHT TO AMEND AND TERMINATE..........................................  81
11.16             CONSENT TO AMENDMENT BY TRUSTEE IF DUTIES INCREASED...................  82
11.17             TERMINATION OF THE PLAN...............................................  82
11.18             VESTING UPON PLAN TERMINATION.........................................  83
11.19             MERGERS, CONSOLIDATIONS AND TRANSFERS.................................  83
</TABLE>


                                       v

<PAGE>   7

<TABLE>
<C>               <C>                                                                     <C>
ARTICLE XI
11.20             NAMED FIDUCIARIES.....................................................  84
11.21             SUCCESSORS............................................................  85
11.22             FIDUCIARIES NOT INSURERS..............................................  85
11.23             NO LIABILITY..........................................................  85
11.24             NOTICE AND WAIVER OF NOTICE...........................................  85
11.25             EVIDENCE FURNISHED CONCLUSIVE.........................................  85
11.26             RETURNED PAYMENTS.....................................................  85
11.27             RELEASE OF CLAIMS.....................................................  86
11.28             PAYMENTS TO MINORS OR INCOMPETENTS....................................  86
11.29             MULTIPLE COPIES OF PLAN AND/OR TRUST DOCUMENT.........................  86
11.30             SEGREGATION OF PLAN ASSETS............................................  86
11.31             PARTIES TO LITIGATION.................................................  86

ARTICLE XII
                           ADOPTION BY OTHER EMPLOYERS..................................  88
12.01             ADOPTION BY OTHER EMPLOYERS...........................................  88
12.02             DESIGNATION OF AGENT..................................................  88
12.03             AMEND ...............................................................   88
12.04             REQUIREMENTS OF PARTICIPATING EMPLOYERS...............................  88
12.05             PARTICIPANT TRANSFERS.................................................  88
12.06             SEPARATE ACCOUNTING...................................................  89
12.07             DISCONTINUANCE OF PARTICIPATION.......................................  89
12.08             COMMITTEE'S AUTHORITY.................................................  89
12.09             PARTICIPATING EMPLOYER'S CONTRIBUTION.................................  89

ARTICLE XIII
                           VOTING RIGHTS AND DIVERSIFICATION............................  90
13.01             TENDER RIGHTS AND OTHER SHAREHOLDER RIGHTS............................  90
13.02             VOTING COMPANY STOCK..................................................  90
13.03             RIGHTS, RESTRICTIONS AND OPTIONS ON COMPANY STOCK.....................  92
13.04             INTENTIONALLY OMITTED.................................................  93

ARTICLE XIV
                           QUALIFIED SURVIVOR ANNUITIES.................................  94
14.01             EFFECT OF THIS ARTICLE................................................  94
14.02             DEFINITIONS...........................................................  94
14.03             WAIVER: QUALIFIED JOINT AND SURVIVOR ANNUITY..........................  95
14.04             WAIVER: QUALIFIED PRE-RETIREMENT SURVIVOR ANNUITY.....................  95
14.05             OPTIONAL BENEFIT FORMS................................................  95
14.06             ELECTION OF OPTIONAL BENEFIT FORMS AND ALTERNATIVE
                  BENEFICIARY...........................................................  96
14.07             CASH OUTS.............................................................  97
</TABLE>


                                       vi

<PAGE>   8

                                    ARTICLE I

                               HISTORY OF THE PLAN

1.01  NAME OF PLAN. The provisions contained in this agreement shall constitute
      the Safety-Kleen Corp. 401(k) Savings Plan, formerly known as the Laidlaw
      Environmental Services, Inc. 401(K) Savings Plan (the "Plan").

1.02  ADOPTION OF PLAN. The Plan was originally adopted for the benefit of the
      Employees of Laidlaw Environmental Services, Inc. (hereinafter known as
      the "Plan Sponsor" or merely "Sponsor") and its Subsidiaries effective
      September 1, 1990, which was the date as of which such Employees ceased
      participation in the Laidlaw Savings Plan. If any Affiliates of the
      Sponsor adopt the Plan, it will be adopted for the Employees of such
      Affiliates, in accordance with an adoption and joiner agreement, and the
      effective date of such adoption will be set forth therein. The Plan was
      amended and completely restated on December 30, 1993 in order to bring the
      Plan into compliance with all aspects of the Tax Reform Act of 1986, all
      subsequent legislation, and all regulations and other interpretations of
      such legislative changes, with the effective date of such restatement
      generally being the Plan's original effective date of September 1, 1990.
      The Plan was amended and completely restated as of August 1, 1998 in order
      to incorporate all amendments to the Plan adopted after the 1993
      restatement and to make certain other amendments to the Plan. Laidlaw
      Environmental Services, Inc. has changed its name to Safety-Kleen Corp.

1.03  TRUST AGREEMENT. To implement the provisions of the Plan the Sponsor
      previously entered into a trust agreement with First National Bank of
      Chicago, as Trustee. First National Bank of Chicago was removed as Trustee
      effective as of July 1, 1996, and Investors Fiduciary Trust Company was
      appointed as successor Trustee effective as of July 1, 1996. Investors
      Fiduciary Trust Company was removed as successor Trustee effective as of
      July 1, 1998, and Wachovia Bank, N.A. was appointed as successor Trustee
      effective as of July 1, 1998, pursuant to a Trust Agreement dated as of
      July 1, 1998 between the Plan Sponsor and Wachovia Bank, N.A., such
      Agreement being incorporated herein by reference and forming a part of the
      Plan hereunder.

1.04  QUALIFICATION OF THE PLAN. This Plan is intended to qualify under Section
      401 (a) of the Internal Revenue Code of 1986, as amended, and regulations
      thereunder as a qualified profit sharing plan and includes an arrangement
      intended to be a qualified cash or deferred arrangement under Code Section
      401(K). The Trust holding the assets of the Plan is intended to be an
      exempt trust within the meaning of Code Section 501 (a). Both the Plan and
      its related Trust are also intended to comply with the Employee Retirement
      Income Security Act of 1974, as amended. The profit sharing portion of the
      Plan is intended to constitute an eligible individual account plan as
      defined in ERISA Section 407(d)(3).


                                       7

<PAGE>   9

      The employee stock ownership portion of the Plan as previously included in
      the Plan was intended to constitute an eligible individual account plan as
      defined in ERISA Section 407(d)(3) and to be an employee stock ownership
      plan as defined in ERISA Section 407(d)(6), which was designed to invest
      primarily in qualifying employer securities, as such item is defined in
      ERISA Sections 407(d)(5) and (e) and Code Section 4975(e)(7). The employee
      stock ownership portion of the Plan was terminated in 1996 pursuant to
      Part I of Amendment #4 to the Plan.

      Since the Plan is intended to be an eligible individual account plan, the
      Plan shall have a 1 00 % investment limitation based on fair market value
      of the total assets of the Plan with respect to the acquisition and
      holding of qualifying employer securities, except that Employer elective
      deferrals and amounts held in Transfer or Rollover Accounts, if any, shall
      not be used to acquire or hold such securities.

1.05  PURPOSE OF THE PLAN. The purpose of the Plan is to encourage and assist
      eligible employees (a) to adopt a regular savings and investment program,
      (b) to shelter from current taxation income generated on funds invested in
      the Plan, and (c) to help provide additional financial security for
      retirement years.

1.06  EXCLUSIVE BENEFIT. This agreement has been adopted for the exclusive
      benefit of the Participants (and their Beneficiaries). Except as provided
      in Sections 4.10 and 11.05, under no circumstances shall any property of
      the Trust, or any contributions of the Employer made pursuant to the terms
      of this agreement be used for, or diverted to purposes other than for the
      exclusive benefit of the Participants and their Beneficiaries for whom it
      was established.

- ----------------
END OF ARTICLE I


                                       8

<PAGE>   10

                                   ARTICLE II

                                   DEFINITIONS

The following words and terms shall have the meanings as hereinafter defined
unless the context of their usage plainly indicates otherwise.

      ACCOUNT OR ACCOUNTS. The total interest of a Participant in the Trust Fund
      consisting of one or more of the following Accounts which may be
      established for him. The Plan Administrator may establish additional
      Accounts for Participants as necessary, beyond those set out in this
      Section 2.01, in order to carry out the purposes of this Plan. The
      maintenance of individual accounts is only for accounting purposes. The
      Accounts which may be established for each Participant as of the Effective
      Date of this agreement are:

      (a)  MATCHING ACCOUNT. The account of a Participant credited with matching
           contributions under Section 4.03, as adjusted for earnings and losses
           attributable to such contributions.

      (b)  PRETAX ACCOUNT. The account of a Participant credited with pretax
           contributions made under Section 4.01, as adjusted for earnings and
           losses attributable to such contributions.

      (c)  DISCRETIONARY ACCOUNT. The account of a Participant credited with
           discretionary Employer contributions under Section 4.06, as adjusted
           for earnings and losses attributable to such contributions.

      (d)  ROLLOVER ACCOUNT. The account of a Participant credited with rollover
           contributions made to the Plan pursuant to Section 4.06, as adjusted
           for earnings and losses attributable to such contributions. In
           addition, a Rollover Account shall be established for each
           Participant who participated in the employee stock ownership portion
           of the Plan before January 1, 1996. Upon termination of the employee
           stock ownership portion of the Plan, such Rollover Account shall be
           credited with the Company stock that was allocated to the
           Participant's Company Stock account under the employee stock
           ownership portion of the Plan on the date of such termination, and
           shall thereafter be adjusted for earnings and losses attributable to
           such transferred amounts (as the same may be invested and
           reinvested).

      (e)  TRANSFER ACCOUNT. The account of a Participant credited with funds
           transferred from qualified plans pursuant to Section 4.06, as
           adjusted for earnings 


                                       9

<PAGE>   11

           and losses attributable to such funds. A Participant may have the
           following Transfer Accounts established for him:

           (1)  GSX TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                GSX Corporation Employees' Flexible Retirement Benefit Plan.

           (2)  FIW TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                FIW, Inc. Savings Plan.

           (3)  SW, INC. TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                SW, INC. Savings and Investment Plan.

           (4)  GENSTAR TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                Genstar Company Salaried Employees Thrift Plan.

           (5)  OSCO HOLDINGS, INC. TRANSFER ACCOUNT. This account shall be
                credited with amounts transferred for the benefit of a
                Participant from the OSCO Holdings, Inc. 401(k) Profit Sharing
                Plan.

           (6)  USPCI TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                USPCI, Inc. 401(k) Savings Plan.

           (7)  ROLLINS TRANSFER ACCOUNT. This account shall be credited with
                amounts transferred for the benefit of a Participant from the
                Rollins Environmental Services, Inc. 401(k) Savings Plan.

           (8)  SAFETY-KLEEN TRANSFER ACCOUNT. This account shall be credited
                with amounts transferred for the benefit of a Participant from
                the Safety-Kleen Corp. 401(k) Savings Plan.

      ACTUAL DEFERRAL PERCENTAGE. Shall mean, for each Plan Year, the average of
      the ratios within a specified group (calculated separately for each
      eligible Employee in the specified group) of :

      (a)  The amount of pretax contributions made by the Employee pursuant to
           Section 4.01 to be paid over to the Trust Fund on behalf of such
           eligible Employee for such Plan Year, to


                                       10

<PAGE>   12

      (b)  The eligible Employee's compensation (within the meaning of Section
           414(s) of the Code) for such Plan Year calculated to the nearest
           one-hundredth percent.

      Each Plan Year the Employer may elect to include matching contributions
      and/or profit sharing contributions as defined in Section 401(m)(4)(A) of
      the Code which meet the requirements of Section 401(K)(2)(B) and (C) of
      the Code in Subsection (a), above, in order to determine the Actual
      Deferral Percentage of each eligible Employee.

      [INTENTIONALLY OMITTED]

      ADOPTION AGREEMENT. The agreement by which an Affiliate adopts the Plan
      and Trust for its Employees.

      AFFILIATE. Any corporation or organization which is not a member of a
      controlled group of corporations but which may adopt this Plan with the
      approval of the Board of Directors.

      ANNIVERSARY DATE. December 31.

      AUTHORIZED LEAVE OF ABSENCE. Any absence authorized by the Employer under
      the Employer's standard personnel practices, provided that all persons
      under similar circumstances must be treated alike in the granting of such
      Authorized Leaves of Absence and provided further that the Participant
      returns at the end of the period of authorized absence. Absence due to
      mandatory military service in the Armed Forces of the United States
      (including enlistment in lieu of impending mandatory service) shall be
      considered as an Authorized Leave of Absence.

      BENEFICIARY. A person or persons (natural or otherwise) designated by a
      Participant or Former Participant in accordance with the provisions of
      Section 9.01 to receive any death benefit which shall be payable under
      this Plan. If a married Participant fails to designate a Beneficiary or if
      a married Participant names a Beneficiary other than his Spouse and the
      Spouse's consent is not on file with the Committee, the Participant's
      entire account balance shall be paid to his Spouse.

      BENEFITS COMMITTEE. The person(s) appointed by the Board of the Plan
      Sponsor to assist in the administration of the Plan (except for those
      matters within the purview of the Investment Committee). The Benefits
      Committee shall serve at the pleasure of the Sponsor.

      BOARD OF DIRECTORS. The Board of Directors of Laidlaw Environmental
      Services, Inc. (the name of which will be changed to Safety-Kleen Corp.)
      or any committee of the Board authorized to act on its behalf.


                                       11

<PAGE>   13

      BREAK IN SERVICE. For Employees whose service under the Plan is tracked on
      the elapsed time method, a Break in Service is defined as a Period of
      Severance under Section 2.40 of the Plan.

      CODE. The Internal Revenue Code of 1986, as amended.

      COMPANY STOCK. The presently authorized common stock of the Employer (or a
      corporation which is a member of the same controlled group with the
      meaning of Code Section 409(1)(4)) and any other stock into which such
      stock may hereafter be changed, which constitutes "qualifying employer
      securities" as "defined in Code Section 4975(e)(8) and which is Readily
      Tradable on an Established Securities Market.

      If the Company Stock as described above is not Readily Tradable on an
      Established Securities Market then Company Stock shall mean the common
      stock of the Employer (or a corporation which is a member of the same
      controlled group within the meaning of Code Section 409(l)(4)) having a
      combination of voting power and dividend rights equal to or in excess of:
      (a) that class of common stock of the Employer (or of any other such
      corporation) having the greatest voting power, and (b) that class of
      common stock of the Employer (or of any other such corporation) having the
      greatest dividend rights.

      Company Stock shall also mean non-callable preferred stock if such stock
      is convertible at any time into stock which meets the requirements of the
      foregoing two paragraphs (whichever is applicable) and if such conversion
      is at a conversion price which: (a) was fixed as of the date of
      acquisition of such security by the Plan, and (b) such fixed price as of
      the date of acquisition of such security by the Plan was reasonable.
      Notwithstanding the foregoing, in accordance with regulations promulgated
      by the Secretary of the Treasury, preferred stock which is callable shall
      be treated as non-callable preferred stock (and therefore shall be
      available under this Plan for acquisition as Company Stock) if after the
      call there is a reasonable opportunity for a conversion which meets the
      requirements described above for non-callable preferred stock.

      For the purposes of this Plan and this Section 2.13, the term "Readily
      Tradable" refers to a security that is listed on a national securities
      exchange registered under Section 6 of the Securities and Exchange Act of
      1934 or that is quoted on a system sponsored by a national securities
      association registered under Section 15(A)(b) of such Act.

      For the purposes of this Plan and this Section 2.13, the term "Trading
      Limitation" means a restriction under any Federal or state securities law
      or any regulation thereunder or an agreement not prohibited by applicable
      law or regulation affecting such share that makes such share not as freely
      tradable as one not subject to such restriction or agreement.

      For purposes of this Plan and this Section 2.13, the term "Established
      Securities Market" shall refer to a national securities exchange
      registered under the Securities Exchange Act 


                                       12

<PAGE>   14

      of 1934 where securities are quoted on a system sponsored by a national
      securities association registered under Section 15(A)(b) of the Securities
      Exchange Act.

      For the purposes of establishing the fair market value of Company Stock
      which is not traded on an Established Securities Market, all valuations of
      Company Stock not so readily tradable shall be determined by an
      independent appraiser (as defined in Code Section 170(a)(1)) on an annual
      basis (or more frequently as necessary with respect to specific
      transactions of the Plan involving such Company Stock). The independent
      appraiser shall be independent of any party to any transaction as required
      under Regulation Section 54.4975-1(b)(9).

      COMPENSATION. The Participant's W-2 compensation, excluding expense
      allowances, unpaid earnings, non-qualified deferred compensation, amounts
      realized from the exercise of a non-qualified stock option, bonuses,
      overtime and other special non-recurring payments and including any
      amounts deferred under a salary deferral plan or salary reduction plan
      sponsored by the Employer.

      Compensation shall be measured from the beginning of the Plan Year except
      that for any year, Compensation shall not include Compensation paid while
      an Employee is not a Participant.

      Compensation in excess of $150,000 (as adjusted by the Commissioner of the
      Internal Revenue Service) shall be disregarded. This definition shall be
      used in determining allocated benefits under the Plan.

      COMPUTATION PERIODS. The Computation Period for Eligibility and
      Participation Purposes and the Computation Period for Vesting Purposes
      shall be as follows:

      (a)  ELIGIBILITY AND PARTICIPATION: The Computation Period for Eligibility
           and Participation Purposes shall be measured on the twelve
           consecutive month period beginning with an Employee's Employment
           Commencement Date (or Reemployment Commencement Date) and each
           anniversary thereof.

      (b)  VESTING: The Computation Period for Vesting purposes shall be
           measured on the twelve consecutive month period beginning with an
           Employee's Employment Commencement Date (or Reemployment Commencement
           Date) and each anniversary thereof.

      CONTRIBUTION PERCENTAGE. The contribution percentage for a specified group
      of Employees for a Plan Year shall be the average of the ratios
      (calculated separately for each Employee in the specified group) of:


                                       13
<PAGE>   15

      (a)  the sum of the matching Contributions paid under the Plan on behalf
           of such Employee for such Plan Year, to

      (b)  the Employee's compensation (within the meaning of Section 414(s) of
           the Code) for such Plan Year calculated to the nearest one-hundredth
           percent.

      Each Plan Year the Employer may elect to: (i) include pretax contributions
      which meet the requirements of Section 401(m)(4) of the Code in Subsection
      (a) above, in order to determine the Contribution Percentage of each
      Participant; and/or (ii) make additional matching or discretionary
      contributions which meets the requirements of Code Section 401(m)(4).
      Notwithstanding anything contained herein to the contrary, such additional
      matching or discretionary contributions shall be allocated
      disproportionately in favor of the non-Highly Compensated Employees.

      DISABILITY. A physical or mental condition which permanently prevents an
      Employee from satisfactorily performing his usual duties for the Employer
      or the duties of such other position or job which the Employer makes
      available to him and for which such Employee is qualified by reason of his
      training, education or experience. The determination as to whether a
      Participant is disabled shall be made on evidence that the Participant is
      eligible for disability benefits under the Federal Social Security Act.

      EARLY RETIREMENT DATE. The first day of the month coincident with or next
      following the Participant's attainment of age fifty-five (55) following
      completion of five (5) Years of Service for Vesting Purposes.

      EFFECTIVE DATE. The original Effective Date of this Plan is September 1,
      1990. The Effective Date of this restatement of the Plan is August 1,
      1998.

      EMPLOYEE. A Full-time or part-time Employee on or after the Effective Date
      who is receiving remuneration for personal services rendered to the
      Employer (or who, were it not for being on an Authorized Leave of Absence
      would be receiving such remuneration). The term "Employee" shall include
      Leased Employees, but excludes Temporary Employees as defined in Section
      2.51.

      Notwithstanding the preceding paragraph, a Leased Employee shall not be
      considered to be an Employee of the Employer if:

      a)   such employee is covered by a money purchase pension plan providing:

           (1)  a nonintegrated employer contribution rate of at least ten
                percent of compensation as defined in Code Section 415(c)(3),
                but including amounts contributed by the employer pursuant to a
                salary reduction agreement which are excludable from the
                employee's gross income under Section 125, Section 402(a)(8),
                Section 402(h) or Section 403(b) of the Code,


                                       14
<PAGE>   16

           (2)  immediate participation,

           (3)  full and immediate vesting, and

      (b)  Leased Employees do not constitute more than twenty percent of the
           Employer's non-Highly compensated workforce.

      (c)  If a Leased Employee is treated as an Employee under the Plan (and
           cannot be excluded from participation because he is not in a safe
           harbor plan described in Section 2.20(a) above), the Committee shall
           reduce a Leased Employee's allocation of Employer contributions (if
           any) under this Plan by the Leased Employee's allocation under the
           leasing organization's plan, but only to the extent that allocation
           is attributable to the Leased Employee's service provided to the
           Employer.

      EMPLOYMENT COMMENCEMENT DATE. The date on which an Employee first
      completes an Hour of Service.

      EMPLOYER. Laidlaw Environmental Services, Inc. (the name of which has been
      changed to Safety-Kleen Corp.) and its Subsidiaries and any Affiliate
      which shall adopt this Plan, or any successor which shall assume the
      obligations of this Plan. Any other Affiliate which is acquired subsequent
      to the Effective Date shall be considered an Employer under the Plan
      subject to the approval of the Board, and a resolution of the Affiliates'
      own board of directors.

      ENTRY DATE. The earlier of January 1 or July 1 (or such other date the
      Committee may designate in a nondiscriminatory manner) coincident with or
      next following the date the Employee has satisfied the requirements of
      Section 3.01.

      ERISA. Public Law No. 93-406, the Employee Retirement Income Security Act
      of 1974, as amended from time to time.

      FAMILY MEMBER. With respect to any Employee (and particularly in
      determining Highly Compensated Employees), Family Member means the spouse,
      lineal ascendants and descendants of the Employee or former Employee and
      the spouses of such lineal ascendants and descendants.

      FIDUCIARIES. The Employer, the Sponsor, the Benefits Committee, the
      Investment Committee and the Trustee, but only with respect to the
      specific responsibilities of each for Plan and Trust administration, all
      as described in Articles VIII and IX.


                                       15

<PAGE>   17

      FORMER PARTICIPANT. A Participant whose employment with the Employer has
      terminated but who has a vested account balance under the Plan which has
      not been pain in fun.

      HIGHLY COMPENSATED EMPLOYEE. Any eligible Employee who:

      (a)  was a five percent owner at any time during the year of the preceding
           year; or;


      (b)  received compensation from the Employer for the preceding year in
           excess of $80,000.

           The $80,000 and $85,485 threshold amount in (b) above shall be
           adjusted for cost-of-living increases each year by the Secretary of
           the Treasury.

           Compensation. For purposes of this definition, "Compensation"
           includes:

           (1)  The Participant's wages, salaries, fees for professional service
                and other amounts received for personal services actually
                rendered in the course of employment with the Employer
                maintaining the plan (including, but not limited to, commissions
                paid salesmen, compensation for services on the basis of a
                percentage of profits, and bonuses), including elective
                contributions made by the Employer on the Employee's behalf.

           (2)  In the case of a Participant who is an Employee within the
                meaning of Code Section 401(c)(1) and the regulations
                thereunder, the Participant's earned income.

           (3)  Amounts described in Code Section 104(a)(3), 105(a) and 105(h),
                but only to the extent that these amounts are includable in the
                gross income of the Employee.

           (4)  Amounts paid or reimbursed by the Employer for moving expenses
                incurred by the Employee, but only to the extent that these
                amounts are not deductible by the Employee under Code Section
                217.

           (5)  The value of a non-qualified stock option granted to an Employee
                by the Employer, but only to the extent that the value of the
                option is includable in gross income of the Employee for the
                taxable year in which granted.

           (6)  The amount includable in the gross income of an Employee upon
                making the election described in Code Section 83(b).


                                       16

<PAGE>   18

           (7)  Elective contributions excludable from the Employee's gross
                income under Code Section 402(a)(8) (relating to a Code Section
                401(k) arrangement), Code Section 402(h) (relating to a
                Simplified Employee Pension), Code Section 125 (relating to a
                cafeteria plan) or Code Section 403(b) (relating to a
                tax-sheltered annuity).

           The term "Compensation" does not include:

           (1)  Employer contributions, other than "elective contributions," to
                a plan of deferred compensation to the extent the contributions
                are not included in the gross income of the Employee for the
                taxable year in which contributed. Also not included are
                Employer contributions on behalf of an Employee to a Simplified
                Employee Pension Plan to the extent such contributions are
                excludable from the Employee's gross income and any
                distributions from a plan of deferred compensation, regardless
                of whether such amounts are includable in the gross income of
                the Employee when distributed.

           (2)  Amounts realized from the exercise of a non-qualified stock
                option, or when restricted stock (or property) held by an
                Employee either becomes freely transferable or is no longer
                subject to a substantial risk of forfeiture.

           (3)  Amounts realized from the sale, exchange or other disposition of
                stock acquired under a qualified stock option.

           (4)  Other amounts which receive special tax benefits, such as
                premiums for group term life insurance (but only to the extent
                that the premiums are not includable in the gross income of the
                Employee).

           Determination of highly compensated. The Benefits Committee must make
           the determination of who is a Highly Compensated Employee, consistent
           with Code Section 414(q) and regulations issued under that Code
           Section. Employers aggregated under Code Section and 414(b), (c), (m)
           or (o) are treated as a single employer.

           The Employer will make the determination of who is a Highly
           Compensated Employee based on a determination year which is the Plan
           Year. The look-back year used to determine Highly Compensated
           Employees is the 12 month period immediately preceding the
           determination year except that the Employer may elect to use the
           calendar year ending with or within the determination year as
           prescribed by Treasury regulations. A calendar year election must
           apply to all plans and arrangements of the Employer.


                                       17

<PAGE>   19

           Former Employee. The term "Highly Compensated Employee" also includes
           any former Employee who separated from Service (or has a deemed
           separation from service, as determined under Treasury regulations)
           prior to the Plan Year, performs no Service for the Employer during
           the Plan Year, and was a Highly Compensated Employee either for the
           separation year or any Plan Year ending on or after his 55th
           birthday. If the former Employee's Separation from Service occurred
           prior to January 1, 1987, he is a Highly Compensated Employee only if
           he satisfied clause (a) of this Section 2.28 or received Compensation
           in excess of $50,000 during: (1) the year of his Separation from
           Service (or the prior year); or (2) any year ending after his 54th
           birthday.

           Nondiscrimination. For purposes of determining whether the Plan
           discriminates in favor of Highly Compensated Employees,
           "Compensation" means Compensation as defined in this Section 2.28.
           The Employer also may elect to use an alternate nondiscriminatory
           definition, in accordance with the requirements of Code Section
           414(s) and the regulations issued under that Code Section.

      HOUR OF SERVICE

      (a)  Each hour for which an Employee is paid, or entitled to payment, for
           the performance of duties for the Employer. These hours shall be
           credited to the Employee for the computation period or periods in
           which duties are performed;

      (b)  Each hour for which an Employee is paid, or entitled to payment, by
           the employer on account of a period of time during which no duties
           are performed (irrespective of whether the employment relationship
           has terminated) due to vacation, holiday, illness, incapacity
           (including disability), layoff, jury duty, military duty or
           Authorized Leave of Absence. No more than 501 Hours of Service shall
           be credited under this paragraph for any single continuous period
           (whether or not such period occurs in a single computation period).
           Hours under this paragraph shall be calculated and credited pursuant
           to Section 2530.200b2 of the Department of Labor Regulations which
           are incorporated herein by this reference; and

      (c)  Each hour for which back pay, irrespective of mitigation of damages,
           is either awarded or agreed to by the Employer. The same Hours of
           Service shall not be credited both under paragraph (a) or paragraph
           (b), as the case may be, and under this paragraph (c). These hours
           shall be credited to the Employee for the computation period or
           periods to which the award or agreement pertains rather than the
           computation period in which the award, agreement or payment is made.


                                       18

<PAGE>   20

      (d)  Hours of Service shall be determined on the basis of actual hours for
           which an Employee is paid or entitled to payment.

      (e)  The above provisions shall be construed so as to resolve any
           ambiguities in favor of crediting Employees with Hours of Service.

      (f)  An Hour of Service respecting any member of a controlled group of
           corporations (as defined under Section 414(b) of the Code) or an
           affiliated service group (as defined in Section 414(m) of the Code)
           of which the Employer is a member, or respecting any incorporated or
           unincorporated trade or business which is under common control with
           the Employer (as defined in Section 414(c) of the Code) shall be
           credited as an Hour of Service with the Employer.

      (g)  Hours of Service also will be credited for any individual considered
           an Employee for purposes of this Plan under Section 414(n) of the
           Code.

      INCOME. The net gain or loss of the Trust Fund from investments, as
      reflected by interest payments, realized and unrealized gains and losses
      on securities, other investment transactions and expenses paid out of the
      Trust Fund. In determining the Income of the Trust Fund for any period,
      assets shall be valued on the basis of fair market value.

      INVESTMENT COMMITTEE. The person(s) appointed by the Board of the Sponsor
      to assist in matters relating to the investment of Plan assets. The
      Investment Committee shall serve at the pleasure of the Sponsor.

      INVESTMENT MANAGER. Any person, firm or corporation who:

      (a)  is a registered investment advisor under the Investment Advisors Act
           of 1940;

      (b)  is a bank or an insurance company;

      (c)  has the power to manage, acquire or dispose of Plan assets; and

      (d)  acknowledges in writing his fiduciary responsibility to the Plan.

      LEASED EMPLOYEE(S). Any person (other than an Employee of the Employer)
      who pursuant to an agreement between the Employer and any other person (a
      "leasing organization") has performed services for the Employer (or any
      other organization described in Code Section 414(n)(6) which is related to
      the Employer) on a substantially Full-time basis for a period of at least
      one (1) year, and such services are of a type historically performed by
      Employees in the business field of the Employer. Any contributions or
      benefits provided under the Plan to a Leased Employee by a leasing
      organization which are attributable to services performed for the Employer
      shall be treated as provided by the Employer.


                                       19

<PAGE>   21

      LIMITATION YEAR. The Limitation Year shall be the Plan Year.

      MONTH OF SERVICE. A Participant shall be credited with a full Month of
      Service for each full calendar month during the Computation Period which
      is concurrent with a calendar month within his Period of Service, and
      shall be credited with a partial Month of Service (prorata based on days
      of service) for each partial month during the Computation Period which is
      concurrent with a calendar year within his Period of Service.

      NORMAL RETIREMENT AGE. Sixty-five (65) years of age. With respect to
      amounts credited to Transfer Accounts, the determination of vesting and
      the timing of distribution of those amounts shall be determined using the
      Normal Retirement Age of the Plan from which such amounts were
      transferred.

      NORMAL RETIREMENT DATE. The date on which a Participant actually
      terminates from service following the attainment of Normal Retirement Age.

      PARTICIPANT. An Employee who has satisfied the eligibility requirements to
      participate and who has actually become a member of the Plan and is
      participating in accordance with the provisions of Article III.

      PAYROLL PERIOD. Any monthly period over which pretax contributions
      discussed in Section 4.01 are made and administered.

      PERIOD OF SERVICE. For the purposes of eligibility, participation and
      vesting, the term Period of Service shall mean the period that begins on a
      Participant's Employment Commencement Date (or Reemployment Commencement
      Date) and ends on his Severance from Service Date.

      PERIOD OF SEVERANCE. A twelve (12) consecutive month period which begins
      on a Participant's Severance from Service Date and ends on the date which
      is twelve months later. A Period of Severance also ends on a Participant's
      Reemployment Commencement Date.

      PLAN. The Safety-Kleen Corp. 401(k) Savings Plan (formerly known as the
      Laidlaw Environmental Services, Inc. 401(k) Savings Plan), which is the
      Plan set forth herein, and as amended from time to time.

      PLAN ADMINISTRATOR (ALSO REFERRED TO AS "ADMINISTRATOR" AND "COMMITTEE").
      The Benefits Committee.

      PLAN SPONSOR (ALSO REFERRED TO AS "SPONSOR"). Safety-Kleen Services, Inc.


                                       20

<PAGE>   22

      PLAN YEAR. The Plan's accounting year of twelve consecutive months ending
      on December 31.

      PRIOR PLAN. The Laidlaw Savings Plan under which Participants in this Plan
      may have accrued benefits prior to September 1, 1990.

      REEMPLOYMENT COMMENCEMENT DATE. The date on which an Employee again
      performs an Hour of Service following his Severance from Service Date or
      termination of employment.

      SERVICE SPANNING RULES. For purposes of eligibility and vesting, the
      Service Spanning Rules shall operate as follows:

      (a)  If a Participant quits, retires or is discharged and then performs an
           Hour of Service prior to the first anniversary of his Severance from
           Service Date, his Period of Severance shall be counted as a Period of
           Service for eligibility and vesting purposes.

      (b)  Notwithstanding (a) above, if a Participant is absent from service
           for any other reason than as set out in (a), and if prior to the
           first anniversary of the original date of his absence he quits,
           retires or is discharged and then performs an Hour of Service, his
           Period of Severance shall be counted as a Period of Service for
           eligibility and vesting purposes.

      SEVERANCE FROM SERVICE DATE. The earlier of the date on which an Employee
      quits, retires, is discharged, or dies, or the first anniversary of the
      first date of a period during which an Employee is absent from service for
      any other reason.

      SPOUSE. The spouse of an Employee who was legally married to the Employee
      under the laws of the jurisdiction in which the marriage was contracted
      prior to the Employee's death or actual retirement date. Also see
      definition of Surviving, Spouse at Section 14.02(c).

      SUBSIDIARY. Subsidiary shall mean: (a) any corporation or organization,
      other than an Employer, which is a member of a controlled group of
      corporations (within the meaning of Section 414(b) of the Code) or of an
      affiliated service group (within the meaning of Section 414(m) of the
      Code) with respect to which an Employer is also a member; (b) any
      incorporated or unincorporated trade or business which along with an
      Employer is under common control (within the meaning of the regulations
      from time-to-time promulgated by the Secretary of the Treasury pursuant to
      Section 414(c) of the Code); and (c) any other incorporated or
      unincorporated trade or business which is designated by the Board of
      Directors of the Sponsor as an Affiliate for the purposes of this Plan. In
      determining 


                                       21

<PAGE>   23

      the applicable Annual Addition under Section 4.09 of the Plan, Section
      414(b) and (c) of the Code shall be applied as modified by Section 415(h)
      of the Code.

      TEMPORARY EMPLOYEE. Any employee hired for a specific project(s) after
      which time the project(s) is completed, the Temporary Employee's
      employment will be terminated.

      TOP PAID GROUP. The Employees which as a group constitute the top twenty
      percent of all Employees when ranked on the basis of compensation (as
      determined under Code Section 414(q)(7)) for the Plan Year.

      TRUST AGREEMENT. The Safety-Kleen Corp. 401(k) Savings Trust Agreement
      (formerly known as the Laidlaw Environmental Services, Inc. 401(k) Savings
      Trust Agreement, a separate agreement entered into between the Sponsor and
      the Trustee establishing the Trust which forms part of this Plan.

      TRUST FUND, TRUST OR FUND. The Plan assets held in trust by the Trustee,
      constituting the fund to which contributions are made and from which
      benefits are provided.

      TRUSTEE. Any duly appointed, qualified and acting trustee or successor
      trustee which assumes responsibility and liability for the Plan assets
      under such terms acceptable to the Trustee and upon execution of such
      document or documents acceptable to the Trustee evidencing acceptance of
      Plan assets and liabilities by such successor trustee.

      VALUATION DATE. Every date on which the New York Stock Exchange is open.

      YEARS OF SERVICE FOR ELIGIBILITY, PARTICIPATION AND VESTING PURPOSES.
      Prior to the Effective Date of this Plan, a Participant's Years of Service
      for Eligibility, Participation and Vesting Purposes shall be determined
      under the provisions of the Prior Plan. Years of Service for service
      between the Effective Date of this Plan and June 30, 1995 shall be
      determined under the provisions of the Plan as restated on December 30,
      1993. Service after June 30, 1995 for all Plan purposes shall be measured
      according to the elapsed time method for all Employees, whether full-time
      or part-time, and the service of part-time Employees shall no longer be
      measured according to the hours of service method.

      Employees shall receive credit for a Year of Service for Eligibility,
      Participation or Vesting Purposes as follows:

      (a)  ELIGIBILITY AND PARTICIPATION. An Employee shall receive credit for a
           Year of Service for Eligibility and Participation Purposes for each
           Computation Period for Eligibility and Participation Purposes in
           which he completes twelve 


                                       22

<PAGE>   24

           consecutive Months of Service, unless such service can be disregarded
           under the Break in Service rules.

      (b)  VESTING. An Employee shall receive credit for a Year of Service for
           Vesting Purposes for each Computation Period for Vesting Purposes in
           which he completes twelve consecutive Months of Service, unless such
           service can be disregarded under the Break in Service rules.

           Years of Service with any participating or non-participating
           Affiliate or Subsidiary shall be treated as Years of Service with the
           Employer. An Employee who transfers from the participating Employer
           to another participating Affiliate or Subsidiary or from a
           non-participating Affiliate or Subsidiary to a participating
           Affiliate or Subsidiary shall continue to be covered by this Plan
           without interruption and shall not be considered to have incurred a
           termination of service.

           Notwithstanding anything in this Plan to the contrary, a
           Participant's nonforfeitable interest in his Transfer Accounts shall
           not be less than his nonforfeitable interest determined under the
           service crediting method in effect under the plan from which his
           Transfer Account derived.

      (c)  BREAK IN SERVICE RULES.

           (1)  If a Participant who had a nonforfeitable interest in benefits
                derived from Employer contributions under the Plan incurs a
                Break in Service and then again returns to employment with the
                Employer, his Years of Service before and after the Break in
                Service shall count towards determining his Years of Service for
                all purposes under the Plan.

           (2)  If a Participant who had no nonforfeitable interest in benefits
                derived from Employer contributions under the Plan, his Years of
                Service before the Break in Service shall count towards
                determining his Years of Service for all purposes under the Plan
                only if the number of the Participant's consecutive Breaks in
                Service was less than the greater of:

                (a)  the number five, or

                (b)  the aggregate number of a Participant's Years of Service
                     before the consecutive Breaks in Service being measured.

                     Years of Service prior to any Break in Service which have
                     been previously disregarded by operation of these Break in
                     Service rules shall not be taken into account.


                                       23

<PAGE>   25

           (3)  If a Participant who had a nonforfeitable interest in benefits
                derived from Employer contributions under the Plan incurs five
                consecutive one year Breaks in Service, service rendered after
                such Breaks in Service shall not be taken into account in
                determining the nonforfeitable percentage of a Participant's
                Accounts derived from Employer contributions for service
                completed before such Breaks in Service.


- -----------------
END OF ARTICLE II


                                       24

<PAGE>   26

                                   ARTICLE III

                          ELIGIBILITY AND PARTICIPATION

3.01  ELIGIBILITY FOR PARTICIPATION. Employees shall be eligible for
      participation in the Plan in accordance with the following:

      (a)  Each Employee who was a Participant in the Prior Plan as in effect
           immediately before the Effective Date of this Plan shall be a
           Participant under this Plan.

      (b)  Each Employee shall become a Participant in the Plan on the Entry
           Date coincident with or next following the date on which he: (1)
           completes one Year of Service for Eligibility and Participation
           Purposes and (2) completes an application for participation in
           accordance with Section 3.02 below.

      (c)  Employees whose employment is governed by a collective bargaining
           agreement between Employee representatives and the Employer under
           which retirement benefits were found to be the subject of good faith
           bargaining between the parties shall not be eligible to participate
           in the Plan unless such bargaining agreement specifically provides
           for such coverage.

      (d)  Nonresident aliens who receive no earned income from the Employer
           which constitutes income from sources within the United States shall
           not be eligible to participate in this Plan.

      (e)  United States citizens employed by a foreign affiliate (any foreign
           entity in which the Employer has not less than a ten percent
           interest) shall be eligible to become a Participant in the Plan
           provided the Employer has entered into an agreement with the
           Secretary of the Treasury pursuant to Section 3121(l) of the Code.

      (f)  Employees who are covered by another plan qualified under Code
           Section 401 which is sponsored by an Employer shall not be eligible
           to participate in the Plan.

      (g)  Each Employee who becomes an Employee by reason of a business
           acquisition described in Section 4.06 below shall be eligible to
           become a Participant under this Plan as soon as he becomes an
           Employee if such Employee was a participant in a 401(k) plan
           maintained by the Target Company or by the company whose business
           assets were acquired, and if such Employee was making contributions
           to such 401(k) plan by payroll deduction immediately prior to such
           business acquisition.

3.02  APPLICATION FOR PARTICIPATION. The Benefits Committee shall notify
      prospective eligible Employees of their eligibility to participate in the
      Plan. In order to 


                                       25

<PAGE>   27

      become a Participant hereunder, each Employee must make application to the
      Benefits Committee for participation in the Plan and agree to the terms
      hereof. The Employee shall supply all information, including a designation
      of Beneficiary form, required by the Benefits Committee in such manner and
      at such time as determined by the Benefits Committee. Upon the crediting
      to the Account of any Employee of any amounts under this Plan, such
      Employee shall automatically be bound by the terms and conditions of this
      Plan and all amendments hereto.

3.03  OMISSION OF ELIGIBLE EMPLOYEE. If, in any year, any Employee who is
      eligible and made application for participation in the Plan pursuant to
      this Article is, due to administrative error, omitted and discovery of
      such omission is not made until after a contribution has been made by the
      Employer for the year, the Employer shall make a subsequent contribution
      with respect to the omitted Employee in the amount which the Employer
      would have contributed with respect to him had he not been omitted. Such
      contribution shall be made whether or not it is deductible in whole or in
      part in any taxable year under applicable provisions of the Code.

3.04  INCLUSION OF INELIGIBLE EMPLOYEE. If, in any year, any person who should
      not have been included as a Participant in the Plan is erroneously
      included and discovery of such incorrect inclusion is not made until after
      a contribution by the Employer has been made for the Plan Year, the
      Employer shall be entitled to recover the contribution made with respect
      to the ineligible person whether or not a deduction is allowed with
      respect to such contribution to the extent allowed by Section 4. 10.
      Notwithstanding the foregoing, the Employer may elect in its sole
      discretion to treat any amounts which it would be entitled to recover
      under the previous sentence as a forfeiture or as matching and/or
      discretionary contributions, whether or not a deduction is allowed with
      respect to amounts treated as Contributions.

      If an ineligible Employee has made pretax contributions to the Plan in
      accordance with Section 4.01, then notwithstanding Section 4. 10, the
      Employer shall direct the Trustee to return such contributions (unadjusted
      for any gain or loss).

3.05  PARTICIPATION BY FORMER PARTICIPANTS. An Employee who is a Former
      Participant who had a nonforfeitable right in his Account at the time of
      his termination of service shall be eligible to participate immediately
      upon his completion of one Hour of Service.

      A Former Participant who did not have a nonforfeitable right to a portion
      of his Account at the time of his termination shall be eligible to
      participate in the Plan immediately upon his rehire if (a) he is rehired
      before he incurs a Break in Service, or (b) he is rehired after a Break in
      Service but his prior service cannot be disregarded under the Break in
      Service rules under Section 2.57(c) and Code Section 410(a)(5).


                                       26

<PAGE>   28

      Any other Former Participant who is an Employee must satisfy the
      eligibility requirements in Section 3.01 if his consecutive one year
      Breaks in Service equal or exceed the greater of the number five or the
      aggregate number of his pre-break Years of Service. An Employee's prior
      Years of Service for Eligibility and Vesting Purposes shall be counted
      unless they can be disregarded under the Break in Service rules under
      Section 2.57(c) and Code Section 4.10(a)(5).

3.06  IMMEDIATE PARTICIPATION IN CASE OF PLAN MERGERS. Employees who
      participated in tax-qualified retirement plans which are merged into the
      Plan and who have credit for at least one Year or Service on the effective
      date of such plan merger shall be eligible to participate in the Plan and
      shall be admitted to the Plan on the effective date of such merger
      (regardless of whether or not they are laid off in connection with the
      business acquisition relating to such plan merger), provided that the
      Employee satisfies all criteria for eligibility other than length of
      service.

- ------------------
END OF ARTICLE III


                                       27

<PAGE>   29

                                   ARTICLE IV

                   ALLOCATION OF CONTRIBUTIONS AND FORFEITURES

4.01  PRETAX CONTRIBUTIONS. For any Plan Year, each Participant may enter into a
      salary reduction agreement in which he elects to have allocated to his
      Pre-Tax Account a percentage of his "Base Pay" (as that term is defined in
      Section 4.03) (his "pretax contribution") in one percent increments to a
      maximum of 15%.

      (a)  TIMING OF SALARY REDUCTION AGREEMENTS. All salary reduction
           Agreements shall be made at the time, in the manner and subject to
           the conditions specified by the Benefits Committee which shall
           prescribe uniform and nondiscriminatory rules for such agreements.

      (b)  AMOUNT OF PRETAX CONTRIBUTIONS. Pretax contributions for each Plan
           Year shall not exceed the amount specified in Code Section 402(g)(1).
           If a Participant exceeds the limit imposed by Code Section 402(g)(1),
           the Benefits Committee shall distribute such "excess deferrals"
           (amounts contributed in excess of the limitations imposed by Code
           Section 402(g)(1)) no later than the April 15 following the close of
           the Plan Year. The excess deferrals to be distributed shall be
           adjusted for income or loss in accordance with the regulations and
           procedures promulgated by the Internal Revenue Service. If a
           Participant participates in another plan under which he makes
           elective deferrals pursuant to a Code 401(K) arrangement, elective
           deferrals under a simplified employee pension, or salary reduction
           contributions to a tax sheltered annuity, irrespective of whether the
           Employer maintains the other plan, he may provide the Benefits
           Committee a written claim for excess deferrals made for a calendar
           year. The Participant must submit the claim no later than the March 1
           following the close of the particular calendar year and the claim
           must specify the amount of the Participant's elective deferrals under
           this Plan which are excess deferrals. If the Benefits Committee
           receives a timely claim, it will distribute the excess deferral (as
           adjusted for allocable income) the Participant has assigned to this
           Plan.

      (c)  AMENDING SALARY REDUCTION AGREEMENTS. A Participant may change the
           rate of pretax contributions to his Pre-Tax Account over each
           calendar quarter each Plan Year, provided the Benefits Committee
           receives the amended salary reduction agreement at least fifteen days
           prior to the effective date of the change. Amended salary reduction
           agreements shall be effective as of the first day of the first full
           Payroll Period beginning after the January 1, April 1, July 1 or
           October 1, whichever is earlier, following receipt of the notice of
           the change. Amended salary reduction agreements that are received
           within fifteen days of the proposed effective date of the change
           shall not be effective until the first day of the first day of the
           first Payroll Period beginning after the next following January 1,


                                       28

<PAGE>   30

           April 1, July 1 or October 1, as the case may be. Provided, however,
           that a Participant who was entitled to receive short-term disability
           benefits from his Employer and who ceased making pretax contributions
           to the Plan due to a reduction in compensation caused by such
           disability may file an amended salary reduction Agreement to increase
           his pretax contributions at any time within ninety (90) days after
           the end of his short-term disability benefit payment period.

      (d)  SUSPENDING AND RESUMING PRETAX CONTRIBUTIONS. A Participant may
           suspend his salary reduction agreement at any time during the year
           with respect to Compensation not yet paid. Notification of the
           suspension must be provided to the Benefits Committee and the
           effective date of the suspension will be as soon as administratively
           practicable. Any Participant who suspends his salary reduction
           agreement shall not thereafter recommence pretax contributions until
           after the next following January 1, April 1, July 1, or October 1.

      (e)  TIME FOR DEPOSIT OF PLAN ASSETS IN TRUST FUND. Pretax contributions
           shall be paid to the Trustee as soon as administratively feasible
           after the date withheld, but in no event later than ninety days after
           the date the pretax contributions are withheld or at such earlier
           time as may be required by regulations under Section 401(k) of the
           Code. Pretax contributions shall be made in cash.

      (f)  TIMING OF SALARY REDUCTION CONTRIBUTIONS. Salary reduction
           contributions shall be required as a percentage of Base Pay, except
           that the salary reduction contributions for Participants who desire
           to contribute the maximum amount permitted under Code Section
           402(g)(1) for a particular Plan Year shall be fixed periodic dollar
           amounts.

      (g)  CERTAIN FORMER ROLLINS EMPLOYEES. Any Participant formerly employed
           by Rollins Environmental Services, Inc. who was admitted to
           participation in the Plan in connection with the Rollins merger
           pursuant to Section 3.06 above and who was laid off in connection
           with such merger shall be permitted to make pretax contributions to
           the Plan with respect to severance pay received by such Participant
           as a result of such lay off (which shall be included in the "Base
           Pay" of such Participant for this purpose). Employer matching
           contributions shall be made with respect to such pretax contributions
           as provided in Section 4.03 below.

      (h)  CERTAIN FORMER SAFETY-KLEEN EMPLOYEES. Any Participant formerly
           employed by Safety-Kleen Corp. (as it existed before its acquisition
           by Laidlaw Environmental Services, Inc.), who was admitted to
           participation in the Plan in connection with such acquisition
           pursuant to Section 3.06 above and who was laid off in connection
           with such acquisition shall be permitted to make pretax 


                                       29

<PAGE>   31

           contributions to the Plan with respect to severance pay received by
           such Participant as a result of such lay off (which shall be included
           in the "Base Pay" of such Participant for this purpose). Provided,
           however, that no employer matching contributions shall be made with
           respect to such pretax contributions.

4.02  DISCRETIONARY EMPLOYER CONTRIBUTIONS. The Employer may, for each Plan
      Year, contribute to the Trust an amount as determined by the Board of
      Directors of the Employer ("discretionary contributions"). Except as
      otherwise set forth in Section 4.02(d) below, no such contribution is
      required for any Plan Year.

      (a)  Each Participant who is eligible to share in discretionary
           contributions made during the Plan Year shall have credited to his
           Discretionary Account his share of discretionary contributions.

      (b)  As of the last day of each Plan Year, discretionary contributions
           shall be allocated equally to all Participants who have been Eligible
           Employees and have been actively employed for the entire Plan Year,
           whether or not the Participant has made pre-tax contributions. No
           contribution shall be made by or on behalf of any Participant who is
           not an Employee as of the last day of the Plan Year.

      (c)  Employer contributions shall be made no later than the date
           prescribed by law for filing the Employer's federal income tax
           return, including extensions, for the taxable year in which the Plan
           Year ends. Employer contributions shall be made in cash or in other
           such property acceptable to the Trustee.

      (d)  During the period from January 1, 1994 through July 31, 1998, the
           annual discretionary contribution made for Participants eligible to
           share in such contributions was determined according to the following
           formula:

<TABLE>
<CAPTION>
                 ACTUAL EBIT                                     DISCRETIONARY
           COMPARED TO BUDGETED EBIT                             CONTRIBUTION
           -------------------------                           -----------------
<S>                                                            <C>
                 Less than 90%                                        $100
                 90% - 94.99%                                  0.75% of Base Pay
                 95% - 99.99%                                  1.50% of Base Pay
                 100% - 104.99%                                2.25% of Base Pay
                 105% or more                                  3.00% of Base Pay
</TABLE>

           "EBIT" for this purposes shall mean "earnings before income taxes" on
           a consolidated basis of the corporate group of which the Plan Sponsor
           is a member, as determined in accordance with generally accepted
           accounting principles. The discretionary employer contribution made
           with respect to the period from January 1, 1998 to July 31, 1998
           shall be calculated based on EBIT for the period from 


                                       30

<PAGE>   32

           September 1, 1997 to August 31, 1998. No contribution shall be made
           under this Section 4.02(d) for any period after July 31, 1998.

4.03  MATCHING EMPLOYER CONTRIBUTIONS. The Employer may, for each Plan Year,
      contribute to the Plan an amount as determined by the Board of Directors
      of the Employer specifically dedicated to matching all or a portion of a
      Participant's pre-tax contributions ("matching contributions").

      (a)  Each Participant who is eligible to share in matching contributions
           made during the Plan Year shall have credited to his Matching Account
           his share of matching contributions.

      (b)  For Plan Years beginning on or after January 1, 1998, the Employer
           shall make, and there shall be allocated to Participants who made
           pre-tax contributions, a matching contribution in the amount of $0.75
           for each $1.00 of pre-tax contributions up to six percent (6%) of
           the Participant's Compensation (matching contribution not to exceed
           three percent (3%) of Compensation per Participant). The matching
           contributions under this Section 4.03(b) shall be allocated each
           Valuation Date to all Participants who made pre-tax contributions
           since the immediately preceding Valuation Date.

      (c)  For purposes of this Section 4.03, the term "Base Pay" shall mean a
           Participant's regular pay and commissions, but excluding bonuses,
           overtime, car allowances, and other special pay. "Base pay" shall
           also exclude commissions paid prior to August 1, 1998.

      (d)  If allocating the matching contributions would cause discrimination
           pursuant to Section 4.08, the excess matching contributions shall be
           distributed or allocated in accordance with Section 4.08(d) of the
           Plan.

      (e)  Employer contributions shall be made no later than the date
           prescribed by law for filing the Employer's federal income tax
           return, including extensions, for the taxable year in which the Plan
           Year ends. Employer contributions shall be made in cash or in other
           such property acceptable to the Trustee.

4.04  [INTENTIONALLY OMITTED]

4.05  ALLOCATION OF FORFEITURES. Amounts forfeited pursuant to Section 6.02 of
      the Plan shall be allocated to Participants who made pre-tax contributions
      at any time during the Plan Year and who are still employed by the
      Employer at the end of the Plan Year; forfeitures shall be allocated on
      the ratio that the total of a Participants' individual inception-to-date
      Employer matching contributions bears to the total of all Participants'


                                       31

<PAGE>   33

      individual inception-to-date Employer matching contributions; forfeitures
      shall be allocated to the Discretionary Accounts of the Participants.

4.06  ROLLOVERS AND TRANSFERS. Assets may be rolled or transferred into the Plan
      for an Employee either before or after such Employee has become a
      Participant in the Plan except that no such rollover or transfer shall
      occur before an Employee has become a Participant in the Plan unless the
      Benefits Committee reasonably expects that such Employee will become
      eligible to participate in the Plan. Such amounts shall not be taken into
      account in determining the Annual Additions limitations under the Plan.

      (a)  Assets may be transferred immediately into the Plan with respect to a
           group of Employees from another tax-qualified retirement plan (the
           "Transferor Plan") if each of the following conditions is satisfied:

           (1)  The Employees become Employees by reason of (A) the acquisition
                by the Employer (or by its Subsidiary or Affiliate) of stock of
                a corporation which becomes a Subsidiary or Affiliate of the
                Employer as a result of such acquisition and which adopts the
                Plan (the "Target Company"), or (B) the acquisition of
                substantially all of the assets of a business by the Employer
                (or by its Subsidiary or Affiliate which has adopted the Plan);
                and

           (2)  The Transferor Plan was maintained by the Target Company (or its
                affiliate) or by the company whose assets were acquired (or its
                affiliate); and

           (3)  All assets held by the Transferor Plan for the account of such
                Employees are transferred directly into the Plan from the
                Transferor Plan.

      (b)  Any rollover or transferred amounts do not consist of nondeductible
           voluntary contributions made to another plan or deductible voluntary
           contributions defined in Section 219(e)(3) of the Code.

      (c)  The rollover or transferred contribution complies with all
           requirements of Code Sections 402(a)(5), 403(a)(4), or
           408(d)(3)(A)(ii), whichever is applicable.

      (d)  [INTENTIONALLY OMITTED]

      (e)  Any transferred amounts from plans of unrelated employers are
           accompanied by a certificate from the custodian or trustee of the
           transferor plan stating that:

           (1)  the amounts transferred do not contain any amounts which were
                contributed to such plan on behalf of the Employee when the
                transferor 


                                       32

<PAGE>   34

                plan failed to meet the requirements of Section 401(a) or 403(a)
                of the Code at the time of the contribution of such amounts to
                the plan generating the transfer nor at the time of transfer;
                and

           (2)  that the transfer of such amounts is not incidental to the loss
                by the plan of its qualified status under Section 401(a) or
                403(a) of the Code.

      (f)  The rollover or transferred amounts at no time prior to or incidental
           to the rollover or transfer were actually or constructively received
           as a taxable distribution by the Employee on whose behalf the
           rollover or transfer is made.

      (g)  Any rollover or transfer contribution to the Trust shall be credited
           to a separate account established under the Trust on behalf of the
           Participant.

      (h)  Any rollover or transfer contribution must be in the form of cash. If
           the Participant wishes to make a rollover or transfer contribution in
           a form other than cash, or if the Participant desires to retain any
           such rollover contributions in its present investment, the approval
           of the Benefits Committee and acceptance by the Trustee must be
           granted prior to such rollover or transfer. All expenses of
           establishing and maintaining such account will be charged directly to
           such account or paid by the Participant.

      (i)  The Trustee shall not be liable for any adverse consequences which
           may result to a Participant, the Employer, the Plan or the Trust
           should any contribution pursuant to this Section 4.06 be determined
           not to constitute a proper rollover or transfer contribution under
           the Code and the Employer and Participant agrees to hold the Trustee
           harmless from any and all such liability.

      (j)  The Employer, at the time of the transfer of any amounts from a plan
           described under Code Section 401(k) which constitute under such other
           plan what is described as pre-tax contributions under this Plan,
           shall designate which plan shall take into account such amounts for
           purposes of satisfying the Actual Deferral Percentage Test under Code
           Section 401(k) with respect to such amounts.

      (k)  The Employer, at the time of the transfer of any amounts from a plan
           described under Code Section 401(k) which constitute under such other
           plan what is described as matching contributions under this Plan
           shall designate which plan shall take into account such amounts for
           purposes of satisfying the Contribution Percentage Test under Code
           Section 401(m) with respect to such amounts. Such amounts as are
           transferred and allocated under this Section 4.06(k) shall
           nevertheless be identified separately and shall be subject to the
           second paragraph of Section 6.01.


                                       33

<PAGE>   35

      (l)  All transfer contributions must comply with the requirements of
           Regulation Section 1.411(d)(4), Q&A3.

4.07  PRE-TAX LIMITATIONS. For each Plan Year, the Employer shall ensure that
      the following discrimination test is satisfied with respect to pre-tax
      contributions.

      (a)  ACTUAL DEFERRAL PERCENTAGE TEST. Under this test the Actual Deferral
           Percentage for all eligible Highly Compensated Employees for the Plan
           Year may not exceed the greater of either:

           (1)  the Actual Deferral Percentage for all other eligible Employees
                for the Plan Year multiplied by 1.25; or

           (2)  the Actual Deferral Percentage for all other eligible Employees
                for the Plan Year multiplied by 2.0, provided that the Actual
                Deferral for the eligible Highly Compensated Employees does not
                exceed the Actual Deferral Percentage for all other eligible
                Employees by more than 2 percentage points for the Plan Year.

      (b)  For purposes of this section, the term "eligible Employee" shall mean
           for any Plan Year every Employee who is eligible to participate in
           the Plan.

      (c)  In order to pass the Actual Deferral Percentage Test, the Employer
           may, when determining the Actual Deferral Percentage of each
           Employee: (i) aggregate with the pre-tax contributions any
           contributions as defined in Section 401(m)(4)(A) of the Code which
           meet the requirements of Sections 401(k)(2)(B) and (C) of the Code;
           and/or (ii) make additional qualified non-elective contributions that
           meet the requirements of Section 401(m)(4)(c) of the Code to the
           Plan. Such qualified non-elective contributions shall be allocated
           disproportionately in favor of the non-Highly Compensated Employees.

           In order to be aggregated with the pre-tax Contributions the
           qualified matching contributions and qualified non-elective
           contributions described above, without regard to whether such
           contributions are actually taken into account as pre-tax
           contributions, must be 100% nonforfeitable at all times and subject
           to certain distribution restrictions. "Distribution restrictions"
           means the Employee may not receive a distribution of the specified
           contributions (nor earnings on those contributions) except in the
           event of (1) the Participant's death, disability, termination of
           employment, attainment of age 59 1/2, (2) financial hardship
           satisfying the requirements of Code Section 401(k) and the applicable
           Treasury regulations, (3) Plan termination, without establishment of
           a successor defined contribution plan (other than an ESOP), (4) a
           sale of substantially all of the assets (within the meaning of Code
           Section 409(d)(2)) used in a trade or business, but 


                                       34

<PAGE>   36

           only to an Employee who continues employment with the corporation
           acquiring those assets, or (5) a sale by a corporation of its
           interest in a subsidiary (within the meaning of Code Section
           409(d)(3)), but only to an Employee who continues employment with the
           subsidiary. For Plan Years beginning after December 31, 1988, a
           distribution on account of financial hardship, as described in clause
           (2), may not include earnings on elective deferrals credited as of a
           date later than December 31, 1988, and may not include qualified
           matching contributions and qualified non-elective contributions, nor
           any earnings on such contributions, irrespective of when credited. A
           distribution described in clauses (3), (4) or (5) if made after March
           31, 1988, must be a lump sum distribution, as required under Code
           Section 401(k)(10).

           The Benefits Committee may determine (in a manner consistent with
           Treasury regulations) the Actual Deferral Percentages of the eligible
           Employees by taking into account qualified non-elective contributions
           or qualified matching contributions, or both, made to this Plan or to
           any other qualified Plan maintained by the Employer. The Benefits
           Committee may not include qualified non-elective contributions in the
           Actual Deferral Percentage test unless the allocation of non-elective
           contributions is nondiscriminatory when the Benefits Committee takes
           into account all non-elective contributions and also when the
           Benefits Committee takes into account only the non-elective
           contributions not used in either the Actual Deferral Percentage test
           or the Contribution Percentage test described in Section 4.08.
           Qualified non-elective contributions must not be treated as pre-tax
           contributions if the effect is to increase the difference between the
           Actual Deferral Percentage for the highly compensated group and the
           Non-Highly compensated group. In order to be taken into account,
           qualified non-elective and qualified matching contributions must meet
           the same requirements to be taken into account as those described
           below for pre-tax contributions.

           Contributions taken into account. In applying the Actual Deferral
           Percentage test, a pre-tax contribution may be taken into account
           only if it satisfies the following two requirements:

           (1)  It must be allocated to the Employee as of a date within the
                Plan Year; and

           (2)  It must relate to Compensation that either would have been
                received by the Employee in the Plan Year except for the
                Employee's election to defer it or is attributable to services
                performed by the Employee in the Plan Year, and but for the
                Employee's election to defer, would have been received by the
                Employee within 2 1/2 months after the close of the Plan Year.

                For purposes of the first requirement, a pre-tax contribution is
                considered to be allocated as of a date within the Plan Year
                only if (1) the allocation is 


                                       35


<PAGE>   37

                not contingent upon the Employee's participation in the Plan or
                performance of services on any later date and (2) the elective
                contribution is actually paid to the Trust no later than the end
                of the 12-month period immediately following the Plan Year to
                which it relates.

                Aggregation rule for Highly Compensated Employees. To determine
                the Actual Deferral Percentage of any Highly Compensated
                Employee, the pre-tax contributions taken into account must
                include any pre-tax contributions made by the Highly Compensated
                Employee under any other Code Section 401(k) arrangement
                maintained by the Employer. If the plans containing the Code
                Section 401(k) arrangements have different plan years, the
                Committee will determine the combined pre-tax contributions on
                the basis of the plan years ending in the same calendar year.

                Family aggregation rule. In the case of a Highly Compensated
                Employee who is either a 5% owner or one of the 10 most highly
                compensated Employees, the aggregated family members are treated
                as a single Highly Compensated Employee. The Actual Deferral
                Percentage of the family unit is the Actual Deferral Percentage
                determined by combining the pre-tax contributions, Compensation
                and amounts treated as pre-tax contributions under this Section
                4.07(c) of all aggregated family members.

                Except to the extent taken into account above, the pre-tax
                contributions, Compensation and amounts treated as pre-tax
                contributions of all family members are disregarded in
                determining the Actual Deferral Percentages for the groups of
                Highly Compensated and Non-Highly Compensated Employees.

                Aggregation of certain Code Section 401(k) arrangements. If the
                Employer treats two plans as a unit for coverage or
                nondiscrimination purposes, the Employer must combine the Code
                Section 401(k) arrangements under such plans to determine
                whether either plan satisfies the Actual Deferral Percentage
                test. This aggregation rule applies to the Actual Deferral
                Percentage determination for all eligible Employees,
                irrespective of whether an eligible Employee is a Highly
                Compensated Employee or a Non-Highly Compensated Employee. The
                Employer also may elect to aggregate the Code Section 401(k)
                arrangements under plans which the Employer is not required to
                treat as a unit for coverage or nondiscrimination purposes. If
                the Employer chooses to aggregate such plans, they must then be
                treated as one unit for coverage and nondiscrimination purposes.
                For Plan Years beginning after December 31, 1989, an aggregation
                of Code Section 401(k) arrangements under this paragraph does
                not apply to plans which have different plan years.


                                       36

<PAGE>   38

                Any Employer contributions or qualified non-elective
                contributions that are used to determine the Employee's Actual
                Deferral Percentage shall not be used to determine the
                Employee's Contribution Percentage.

      (d)  If the Actual Deferral Percentage Test is not satisfied for a Plan
           Year, the pre-tax contributions shall be reduced to the extent
           necessary so that the Actual Deferral Percentage for the Highly
           Compensated Employees is not more than the greater of Section
           4.07(a)(1) or (2) of the Plan. Such reduction shall be accomplished
           by:

           (1)  First, reducing the rate of deferral down a specified percentage
                or fractional portion of a percentage point for the Highly
                Compensated Employees and rerunning the test as outlined in
                Section 4.07(a)(1) and (2) of the Plan.

           (2)  In the event of test failure under Subsection (d)(1) above, the
                percentages of Highly Compensated Employees shall be adjusted
                down by one percentage point or a fractional portion of a
                percentage point and the test repeated until such time as the
                test is met. The Benefits Committee shall have the discretion to
                determine whether or not to use fractional percentages under
                this adjustment procedure.

      (e)  In the event "excess contributions" (the excess of the pre-tax
           contributions on behalf of Highly Compensated Employees over the
           maximum amount permitted by the Actual Deferral Percentage limits)
           exist at the end of the Plan Year, the amount of excess contributions
           for such Plan Year shall be returned to the Highly Compensated
           Employee within 2 1/2 months after the close of such Plan Year. The
           excess contributions to be distributed shall be adjusted for income
           or loss in accordance with the regulations and procedures promulgated
           by the Internal Revenue Service.

           If the Highly Compensated Employee is part of an aggregated family
           group, the excess contributions for the family group (as determined
           by using the method in (d) above) are allocated among the family
           members in proportion to the pre-tax contribution of each family
           member that is combined to determine the Actual Deferral Percentage.

           The Committee will reduce the amount of excess contributions for a
           Plan Year distributable to a Highly Compensated Employee by the
           amount of "excess deferrals", if any, previously distributed to that
           Employee for the Employee's taxable year ending in that Plan Year.
           The amount of "excess deferrals" under Code Section 402(g) that may
           be distributed with respect to an Employee for a taxable year must be
           reduced by any excess contributions previously distributed 


                                       37

<PAGE>   39

           with respect to that Employee for the Plan Year beginning with or
           within that taxable year.

4.08  LIMITATIONS ON EMPLOYER CONTRIBUTIONS. For each Plan Year, the Employer
      shall ensure that the following discrimination test is satisfied with
      respect to matching contributions.

      (a)  CONTRIBUTION PERCENTAGE TEST. Under this test, the Contribution
           Percentage for all eligible Highly Compensated Employees may not
           exceed the greater of either:

           (1)  the Contribution Percentage for all other eligible Employees for
                the Plan Year multiplied by 1.25; or

           (2)  the Contribution Percentage for all other eligible Employees for
                the Plan Year multiplied by 2.0, provided that the Contribution
                Percentage for the eligible Highly Compensated Employees does
                not exceed the Contribution Percentage for all other eligible
                Employees by more than 2 percentage points for the Plan Year.

      (b)  For purposes of this section, the term "eligible Employee" shall mean
           for any Plan Year every Employee who is eligible to participate in
           the Plan.

      (c)  In order to pass the Contribution Percentage Test, the Employer may,
           when determining the Contribution Percentage of each Employee; (i)
           aggregate with the matching Contributions any pre-tax contributions
           which meet the requirements of Section 401(m)(4)(B) of the Code; and
           (ii) make additional matching or qualified non-elective
           contributions. Notwithstanding anything contained herein to the
           contrary, such additional contributions shall be allocated
           disproportionately in favor of the non-Highly Compensated Employees.

           In order to be aggregated with the matching Contributions, the
           non-elective contributions described above, without regard to whether
           such contributions are actually taken into account as matching
           Contributions, must be 100% nonforfeiture at all times and subject to
           certain distribution restrictions. "Distribution restrictions" means
           the Employee may not receive a distribution of the specified
           contributions (nor earnings on those contributions) except in the
           event of (1) the Participant's death, disability, termination of
           employment, attainment of age 59 1/2, (2) financial hardship
           satisfying the requirements of Code Section 401(k) and the applicable
           Treasury regulations, (3) Plan termination, without establishment of
           a successor defined contribution plan (other than an ESOP), (4) a
           sale of substantially all of the assets (within the meaning of Code
           Section 409(d)(2)) used in a trade or business, but only to an
           Employee who 


                                       38
<PAGE>   40

           continues employment with the corporation acquiring those assets, or
           (5) a sale by a corporation of its interest in a subsidiary (within
           the meaning of Code Section 409(d)(3)), but only to an Employee who
           continues employment with the subsidiary. A distribution on account
           of financial hardships described in clause (2) may not include
           earnings on elective deferrals credited as of a date later than
           December 31, 1988, and may not include qualified matching
           contributions, nor any earnings on such contributions, irrespective
           of when credited. A distribution described in clauses (3), (4) or (5)
           must be a lump sum distribution, as required under Code Section
           401(k)(10).

           The Benefits Committee may determine (in a manner consistent with
           Treasury regulations) the Contribution Percentages of the eligible
           Employees by taking into account qualified non-elective contributions
           or elective deferrals, or both, made to this Plan or to any other
           qualified Plan maintained by the Employer. The Benefits Committee may
           not include qualified non-elective contributions in the Contribution
           Percentage test unless the allocation of non-elective contributions
           is nondiscriminatory when the Benefits Committee takes into account
           all non-elective contributions (including the qualified non-elective
           contributions) and also when the Benefits Committee takes into
           account only the non-elective contributions not used in either the
           Actual Deferral Percentage test described in Section 4.07 or the
           Contribution Percentage test described in this Section 4.08.
           Qualified non-elective contributions may not be treated as qualified
           matching contributions if the effect is to increase the difference
           between the Contribution Percentage for the highly compensated group
           and the Non-Highly compensated group. In order to be taken into
           account, a qualified non-elective contribution must meet the
           requirements below:

           (1)  It must be allocated to the Employee as of a date within the
                plan year; and

           (2)  It must relate to Compensation that either would have been
                received by the Employee in the Plan Year except for the
                Employee's election to defer it or is attributable to services
                performed by the Employee in the Plan Year, and but for the
                Employee's election to defer, would have been received by the
                Employee within 2 1/2 months after the close of the Plan Year.

           For purposes of the first requirement, a pre-tax contribution is
           considered to be allocated as of a date within the Plan Year only if
           (1) the allocation is not contingent upon the Employee's
           participation in the Plan or performance of services on any later
           date and (2) the elective contribution is actually paid to the Trust
           no later than the end of the 12-month period immediately following
           the Plan Year to which it relates.


                                       39

<PAGE>   41

           Aggregation rule for Highly Compensated Employees. To determine the
           Contribution Percentage of any Highly Compensated Employee, the
           aggregate contributions taken into account must include any matching
           Contributions (other than qualified matching, contributions used in
           the Actual Deferral Percentage test) and any Employee contributions
           made on his behalf to any other plan maintained by the Employer. If
           the plans have different plan years, the Committee will determine the
           combined aggregate contributions on the basis of the plan years
           ending in the same calendar year.

           Family aggregation rule. In the case of a Highly Compensated Employee
           who is either a 5% owner of one of the 10 most highly compensated
           Employees, the aggregated family members are treated as a single
           Highly Compensated Employee. The Contribution Percentage of the
           family unit is the Contribution Percentage determined by combining
           the contributions and Compensation of all aggregated family members.

           Except to the extent taken into account above, the contributions and
           Compensation of all family members are disregarded in determining the
           Contribution Percentages for the groups of Highly Compensated and
           Non-Highly Compensated Employees.

           Aggregated of certain plans. If the Employer treats two plans as a
           unit for coverage or nondiscrimination purposes, the Employer must
           combine the plans to determine whether either plan satisfies the
           Contribution Percentage test. This aggregation rule applies to the
           Contribution Percentage determination for all eligible Employees,
           irrespective of whether an eligible Employee is a Highly Compensated
           Employee or a Non-Highly Compensated Employee. The Employer also may
           elect to aggregate plans which the Employer does not treat as a unit
           for coverage or nondiscrimination purposes. If the Employer chooses
           to aggregate such plans, they must then be treated as one unit for
           coverage and nondiscrimination purposes. For Plan Years beginning
           after December 31, 1989, an aggregation of plans under this paragraph
           does not apply to plans which have different plan years.

           Any Employer contributions or qualified non-elective contributions
           used to determine the Employee's Actual Deferral Percentage, as
           provided for in Section 4.07(c) of the Plan, shall not be used in
           determining the Employee's Contribution Percentage for the Plan Year.
           The Employer may not include pre-tax contributions in the
           Contribution Percentage Test unless the Plan which includes the
           elective deferrals satisfies the Actual Deferral Percentage Test both
           with and without the pre-tax contributions included in this
           Contribution Percentage Test.


                                       40

<PAGE>   42

      (d)  If the Contribution Percentage of Highly Compensated Employees
           exceeds the limitations set forth in Section 4.08(a)(1) and (2)
           ("excess matching contributions"), then the nonforfeitable portion of
           such excess matching contributions made on behalf of Highly
           Compensated Employees shall be distributed to the Highly Compensated
           Employees within 2 1/2 months after the close of the Plan Year. The
           excess matching contributions to be distributed shall be adjusted for
           income or loss in accordance with the regulations and procedures
           promulgated by the Internal Revenue Service.

           To the extent the Highly Compensated Employees do not have a
           nonforfeitable interest in such excess matching contributions they
           shall be alternatively allocated to all other eligible non-Highly
           Compensated Employees in the ratio that such non-Highly Compensated
           Employee's pre-tax contribution bears to all other non-Highly
           Compensated Employees' pre-tax contributions for the Plan Year. The
           excess matching contributions shall be alternatively allocated to the
           extent necessary so that the Contribution Percentage for the Highly
           Compensated Employees is not more than the greater of Section
           4.08(a)(1) or (2) of the Plan. Such alternative allocation shall be
           accomplished by:

           (1)  First, distributing and/or alternatively allocating what would
                otherwise be the excess matching contribution of the Employee
                receiving the highest Contribution Percentage until such
                Employee's Contribution Percentage is equal to the Contribution
                Percentage of the Highly Compensated Employee with the next
                highest Contribution Percentage and rerunning the test as
                outlined in Section 4.08(a)(1) and (2) of the Plan.

           (2)  In the event of test failure under Subsection (d)(1) above, the
                excess matching contributions of the Highly Compensated.
                Employees shall continue to be distributed and/or alternatively
                allocated in the manner specified above and the test repeated
                until some time as the test is met.

           If the Highly Compensated Employee is part of an aggregated family
           group, the excess matching contributions for the family group (as
           determined by using the method in (d)(1) and (2) above) are allocated
           among the family members in proportion to the matching Contributions
           of each family member that are combined to determine the Contribution
           Percentage.

      (e)  In the event that pre-tax contributions for which a Participant
           received an allocation of a matching contribution are distributed to
           a Participant due to failure of the Actual Deferral Percentage test
           or because such contributions are "excess deferrals" described in
           Section 401(b), then notwithstanding any other provision of this Plan
           to the contrary, the matching contribution which relates to the
           excess 


                                       41

<PAGE>   43

           contribution or excess deferral shall be forfeited by the Participant
           and reallocated at the same time and in the same manner as
           forfeitures under Section 4.05.

4.09  ANNUAL ADDITIONS.

      (a)  BASIC LIMITATION. In accordance with IRS Revenue Notice 87-21,
           Q&A-11, the Plan hereby incorporates the limitations on benefits and
           contributions relating to maximum permissible annual additions by
           reference, as if fully set out herein. The maximum annual addition
           under the Plan shall not exceed, for any Participant, the maximum
           permissible annual addition under Code Section 415. The special
           employee stock ownership plan limitations under Code Section
           415(c)(6) are also hereby incorporated by reference.

           If contributions to this Plan on behalf of a Participant are to be
           reduced as a result of this Section 4.09, such reduction shall be
           effected (to the extent necessary) by reducing the Participant's
           pre-tax contributions, discretionary contributions and matching
           contributions on a prorated basis until the annual additions
           limitation is not violated or by not allocating forfeitures to a
           Participant.

      (b)  ADJUSTMENTS FOR ERRORS IN ESTIMATING COMPENSATION. If, as a result a
           reasonable error in estimating a Participant's compensation (as
           defined in Code Section 415(b)(3) and the regulations thereunder) or
           under the limited facts and circumstances which the Commissioner of
           Internal Revenue finds justify the availability of these rules,
           Annual Additions under the terms of the Plan for a particular
           Participant would cause the limitations of Code Section 415
           applicable to that Participant for the Limitation Year to be
           exceeded, the excess amount shall not be deemed to be Annual
           Additions in that Limitation Year if they are treated as follows:

           (1)  The excess amounts in the Participant's Discretionary
                Contribution or Matching Contribution Account shall be used to
                reduce contributions for the next Limitation Year (and
                succeeding Limitation Years, as necessary) for that Participant
                if that Participant is covered by the Plan as of the end of the
                Limitation Year. However, if that Participant is not covered by
                the Plan as of the end of the Limitation Year then the excess
                amounts must be held unallocated in a suspense account for the
                Limitation Year and allocated and reallocated in the next
                Limitation Year to all of the remaining Participants in the
                Plan.

                If a suspense account is in existence at any time during a
                particular Limitation Year, other than the first Limitation Year
                described in the preceding sentence, all amounts in the suspense
                account must be allocated and reallocated to Participant's
                Accounts (subject to the limitations of Code 


                                       42


<PAGE>   44

                Section 415) before any contributions which would constitute
                Annual Additions may be made to the Plan for that Limitation
                Year. Furthermore, the excess amounts must be used to reduce
                contributions for the next Limitation Year (and succeeding
                Limitation Years, as necessary) for all of the remaining
                Participants in the Plan.

           (2)  In the event of termination of the Plan, notwithstanding any
                other provision in this Plan to the contrary, the suspense
                account described in (1) above shall revert to the Employer to
                the extent it may not then be allocated to any Participant's
                Account.

           (3)  Notwithstanding any other provisions in this Section 4.09, the
                Employer shall not contribute any amount that would cause an
                allocation to the suspense account as of the date of the
                contribution is allocated. If the contribution is made prior to
                the date as of which it is to be allocated, then such
                contribution shall not exceed an amount that would cause an
                allocation to the suspense account if the date of contributions
                were an allocation date.

      (c)  [INTENTIONALLY OMITTED]

      (d)  COMBINED DEFINED CONTRIBUTION/DEFINED CONTRIBUTION PLAN LIMITATION
           ADJUSTMENTS. For any Participant of this Plan who participates in
           another defined contribution plan of the Employer, the rate of
           contribution under this Plan by such Participant during the
           Limitation Year will be reduced to the extent necessary to prevent
           the maximum permissible annual addition limitations of Code Section
           415(c) from being exceeded.

4.10  RETURN OF EMPLOYER CONTRIBUTIONS. Except as provided below and otherwise
      specifically permitted by law, it shall be impossible by operation of the
      Plan or of the Trust, by termination of either, by power or revocation or
      amendment, by the happening of any contingency, by collateral arrangement
      or by any other means, for any part of the corpus or income of any Trust
      Fund maintained pursuant to the Plan or any funds contributed thereto to
      be used for, or diverted to, purposes other than the exclusive benefit of
      Participants or their Beneficiaries.

      (a)  FAILURE TO RECEIVE INITIAL QUALIFICATION. Notwithstanding anything
           herein to the contrary, if, pursuant to an application filed by or in
           behalf of the Plan, the Commissioner of Internal Revenue Service or
           his delegate should determine that the Plan does not initially
           qualify as a tax-exempt plan and trust under Sections 401 and 501 of
           the Code, and such determination is not contested, of if contested,
           is finally upheld, then the Plan shall be void from its inception and


                                       43

<PAGE>   45

           all amounts contributed to the Plan by the Employer, less expenses
           paid, shall be returned within one year and the Plan shall terminate,
           and the Trustee shall be discharged from all further obligations.

      (b)  CONTRIBUTIONS MADE BY A MISTAKE OF FACT. In the event the Employer
           shall make an excessive contribution under a mistake of fact pursuant
           to Section 403(c)(2)(A) of ERISA, the Employer may demand repayment
           of such excessive contribution at any time within one year following
           the time of payment and the Trustees shall return such amount to the
           Employer within the one year period. Earnings of the Plan
           attributable to the excess contributions may not be returned to the
           Employer but any losses attributable thereto must reduce the amount
           so returned.

      (c)  DISALLOWED DEDUCTION. All contributions by the Employer to the Trust
           Fund are strictly conditioned upon the deductibility of such
           contributions by the Employer under the Code and, to the extent any
           deduction is disallowed, the Employer may within One year following a
           final determination of the disallowance, whether by agreement with
           the Internal Revenue Service or by final decision of a court of
           competent jurisdiction, demand repayment of such disallowed
           contribution and the Trustee shall return such contribution within
           one year following the disallowance. Earnings of the Plan
           attributable to the excess contribution will not be returned to the
           Employer and any losses attributable thereto shall reduce the amount
           so returned.

- -----------------
END OF ARTICLE IV


                                       44

<PAGE>   46

                                    ARTICLE V

                         ALLOCATION OF GAINS AND LOSSES

5.01  VALUATION OF THE TRUST FUND. The Trustee shall value the assets of the
      Trust Fund on each Valuation Date. In making such valuation, the Trustee
      shall take into account earnings or losses of the Trust Fund, net of
      reasonable expenses, and capital appreciation or depreciation in such
      assets whether or not realized. The method of valuation shall be
      determined by the Trustee and shall be followed with reasonable
      consistency from year to year in which valuations are made.

5.02  PRIORITY OF ALLOCATIONS TO ACCOUNTS. As of each Valuation Date, the
      Account balances of Participants and Former Participants shall be adjusted
      to reflect adjustments in the value of the Trust Fund, payments of
      benefits, and transfers of benefits to or for the benefit of any
      Participant or Former Participant. The value of each account shall be
      determined by multiplying the number of units held in each Account by the
      current unit value.

5.03  ALLOCATION OF DIVIDENDS. Any cash dividends received on shares of Company
      Stock allocated to Participants' Accounts shall be allocated directly to
      the Account to which such Company Stock is allocated.

5.04  PARTICIPANT-DIRECTED INVESTMENTS. For any period during which Participants
      are permitted to direct the investment of their Accounts, Accounts shall
      be valued based on the investment performance of the particular mutual
      fund(s) or other investment vehicle(s) selected by the Participant or
      otherwise allocated to the Participant.

- ----------------
END OF ARTICLE V


                                       45

<PAGE>   47

                                   ARTICLE IV

                   DETERMINATION AND DISTRIBUTION OF BENEFITS

6.01  VESTING OF ACCOUNTS. Participants shall vest in their Accounts in
      accordance with the following:

      (a)  Participants shall always be 100% vested in their Pre-Tax Accounts
           and their Rollover or Transfer Accounts (other than the Transfer
           Accounts listed in Subsection 2.01(e))(if any).

      (b)  Participants shall vest in their Discretionary and Matching
           Contribution Accounts and Transfer Accounts in accordance with the
           following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 5                     0%
                       5 or more                    100%
</TABLE>

           For Plan Years beginning on or after January 1, 1994, Participants
           shall vest in their Discretionary and Matching Contribution Accounts
           and Transfer Accounts in accordance with the following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 3                     0%
                       3 or more                    100%
</TABLE>


           For Plan Years beginning on or after January 1, 1995, immediate 100%
           vesting shall apply to Discretionary Contribution Accounts.

           Notwithstanding the foregoing, with respect to amounts credited to
           Transfer Accounts under this Plan, the determination of a
           Participant's vested interest shall be as follows:

      (c)  GSX TRANSFEREES. For Participants who were participants in the GSX
           Corporation Employees' Flexible Retirement Benefit Plan, they shall
           be vested according to the following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 4                     0%
                   4 but less than 5                 40%
                       5 or more                    100%
</TABLE>


                                       46

<PAGE>   48

           Notwithstanding the preceding, vesting schedule, Participants who are
           transferees of the GSX Corporation Employees' Flexible Retirement
           Benefit Plan who had less than five years of service for Vesting
           purposes as defined under the Prior Plan as of September 1, 1998,
           shall become vested in their GSX Transfer Account in accordance with
           the vesting schedule in Section 6.01(b) above.

      (d)  FIW, INC. TRANSFEREES. For Participants who were participants in the
           FIW, Inc. Savings Plan, they shall be vested according to the
           following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 2                     0%
                   2 but less than 3                 20%
                   3 but less than 4                 40%
                   4 but less than 5                 60%
                       5 or more                    100%
</TABLE>


           Notwithstanding the preceding vesting schedule, Participants who are
           transferees of the FIW, Inc. Savings Plan who had less than one year
           of service for vesting purposes are defined under this Plan as of
           March 1, 1990, shall become vested in their FIW Transfer Account in
           accordance with the vesting schedule in Section 6.01(b) above.

      (e)  SW, INC. TRANSFEREES. For Participants who were participants in the
           SW, Inc. Savings and Investment Plan, they shall be 100% vested in
           their SW, Inc. Transfer Account upon the completion of one year of
           service for vesting purposes under the Prior Plan.

           Notwithstanding the preceding vesting schedule, Participants who are
           transferees of the SW, Inc. Savings and Investment Plan who had less
           than one year of service for vesting purposes as defined under the
           Prior Plan as of February 15, 1989, shall become vested in their SW,
           Inc. Transfer Account in accordance with the vesting schedule in
           section 6.01(b) above.

      (f)  GENSTAR TRANSFEREES. For Participants who were participants in the
           Genstar Company Salaried Employees Thrift Plan, they shall be 100%
           vested in the entire amount of their Transfer Account.

      (g)  OSCO HOLDINGS, INC. TRANSFEREES. For Participants who were
           participants in the OSCO Holdings, Inc. 401(k) Profit Sharing Plan,
           they shall vest in their OSCO Holdings, Inc. Transfer Account in
           accordance with the following schedule.


                                       47

<PAGE>   49

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 3                     0%
                       3 or more                    100%
</TABLE>


           The vested percentage of any Participant who participated in the
           Bryson Industrial Services, Inc. Profit Sharing Plan will not be less
           than his vested percentage attained under that plan as of July 1,
           1992 (33% after one year of service, 66% after 2 years of service and
           100% after 3 years of service).

      (h)  USPCI TRANSFEREES. Participants who participated in the USPCI, Inc.
           401(k) Savings Plan and who terminated employment with USPCI or its
           affiliates prior to March 1, 1995 shall vest in that portion of their
           USPCI Transfer Account which is derived from employer contributions
           made under the USPCI, Inc. 401(k) Savings Plan in accordance with the
           following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                   Less than 3                          0%
                   3 but less than 4               33-1/3%
                   4 but less than 5               66-2/3%
                   5 or more                          100%
</TABLE>

           Participants who participated in the USPCI, Inc. 401(k) Savings Plan
           and who terminated employment with USPCI or its affiliates on or
           after March 1, 1995 shall vest in that portion of their USPCI
           Transfer Account which is derived from employer contributions made
           under the USPCI, Inc. 401(k) Savings Plan in accordance with the
           following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 3                     0%
                       3 or more                    100%
</TABLE>

6.02  FORFEITURES. A forfeiture of the non-vested portion of the Participant's
      Discretionary, matching and/or Transfer Account shall take place upon the
      last day of the Plan Year during which a Participant incurs five
      consecutive one year Breaks in Service, or, if earlier, upon a cash out of
      the Participant's entire nonforfeitable Accounts under the Plan. For
      purposes of allowing a forfeiture to take place upon the last day of the
      Plan year during which a Participant incurs a Break in Service or
      terminates employment, a Participant who is 0% vested is deemed to have
      had a cash out of his entire Account 


                                       48

<PAGE>   50

      balance upon his termination of employment. The Plan does not distribute
      less than 100% of the Participant's vested Accounts under Section 6.10.

      Forfeitures shall first be used to reinstate previously forfeited Account
      balances of rehired Former Participant's who are entitled to reinstatement
      pursuant to Section 6.05 of the Plan. Remaining forfeitures shall be
      utilized in accordance with Section 4.05.

      In the event that forfeitures for any particular Plan year are
      insufficient to reinstate previously forfeited Account balances of rehired
      Former Participants, then notwithstanding any other provision of this Plan
      to the contrary, such amounts shall be reinstated by additional Employer
      contributions, whether or not such amounts are deductible.

6.03  CHANGES IN VESTING SCHEDULE. Effective January 1, 1989, if the Plan's
      vesting schedule in Section 6.01 above is amended in any way that directly
      or indirectly affects the computation of a Participant's nonforfeitable
      interest in their Discretionary, Matching or Transfer Accounts, affected
      Participants who have completed at least three Years of Service for
      Vesting Purposes as of the later of the date which is:

      (a)  60 days after the day the Plan amendment is adopted,

      (b)  60 days after the day the Plan amendment becomes effective, or

      (c)  60 days after the day the Participant is issued written notice of the
           Plan amendment by the Employer or the committee, shall have the
           nonforfeitable portion of their Discretionary and matching Accounts
           determined under the most favorable of the two vesting schedules.
           Participants who have not completed at least three Years of Service
           for Vesting Purposes as of the date the amendment is adopted or
           deemed to be made shall have the nonforfeitable portion of their
           Discretionary and Matching Accounts determined under the new vesting
           schedule.

6.04  INVOLUNTARY CASH-OUT. If the total of a Participant's nonforfeitable
      Accounts is $5,000 or less, the Benefits Committee shall immediately
      distribute the entire amount in a single cash payment without the consent
      of the Participant (or if the Participant has died, the Participant's
      Beneficiary) due to a Participant's termination of participation in the
      Plan. Such distribution shall be made as soon as practicable but, in any
      event, not later than the close of the second Plan Year following the Plan
      Year in which such termination of employment occurs.

6.05  REINSTATEMENT OF ACCOUNT. If any non-vested, partially vested or fully
      vested Former Participant is re-employed before he receives an actual or
      deemed distribution of the entire nonforfeitable portion of his Account,
      the Former Participant shall continue to 


                                       49

<PAGE>   51

      participate in the Plan in the same manner as if such termination of
      employment had not occurred.

      If any non-vested or partially vested Former participant shall be
      re-employed by the Employer before five consecutive one year Breaks in
      Service, and such Former Participant has received an actual or deemed
      distribution of his nonforfeitable interest prior to his re-employment,
      that portion of his Discretionary and/or Matching Contribution Account (or
      such other Accounts as are subject to vesting schedules under other plans
      as described in the second paragraph of Section 6.01 above and from which
      a forfeiture occurred) that was forfeited shall be reinstated.

      Notwithstanding the above, no forfeitures shall be reinstated unless a
      Participant described in the foregoing paragraphs has completed one Year
      of Service for Vesting Purposes after his Reemployment Commencement Date.
      Furthermore, if a Participant described in the foregoing paragraphs has
      incurred FIVE consecutive one year Breaks in Service prior to his
      Reemployment Commencement Date, forfeitures shall not be reinstated in any
      event.

6.06  SEPARATE ACCOUNT BALANCES. If a Former Participant is re-employed after
      five consecutive one year Breaks in Service (such Former Participant not
      having received a distribution of his entire vested interest), then
      separate Accounts will be maintained as follows:

      (a)  One Account for nonforfeitable benefits attributable to pre-break
           service; and

      (b)  One Account representing his status in the Plan attributable to
           post-break service.

6.07  DETERMINATION OF BENEFITS UPON NORMAL RETIREMENT. Notwithstanding Section
      6.01 of the Plan, a Participant who terminates his employment on or after
      his Normal Retirement Age shall be 100% vested in his Accounts and shall
      be entitled to all amounts credited to his Accounts as of the date of
      distribution. The distribution of a Participant's Accounts due to his
      retirement shall commence as soon as practical following the Valuation
      Date and concurrent with or next following his Normal Retirement Date
      unless deferred due to his continued employment to his actual termination
      of employment due to retirement after his Normal Retirement Date unless
      required to commence earlier under Section 6.11 or 6.12 of the Plan.

6.08  DETERMINATION OF BENEFITS UPON DISABILITY. Notwithstanding Section 6.01 of
      the Plan, a Participant who terminates his employment as a result of a
      Disability shall be 100% vested in his Accounts as of the date of
      termination of employment determined in accordance with Section 6.01 of
      the Plan. The distribution of a Participant's Accounts due to his
      termination of employment as a result of Disability shall commence as
      practical following the Valuation Date concurrent with or next following
      the date of 


                                       50

<PAGE>   52

      termination of employment unless required to commence earlier under
      Section 6.11 or 6.12 of the Plan.

6.09  DETERMINATION OF BENEFITS UPON DEATH. Notwithstanding Section 6.01 of the
      Plan, upon the death of a Participant before his termination of
      employment, his entire Account shall be 100% vested and held for the
      benefit of his Beneficiary. Upon the death of a Former Participant whose
      employment terminated prior to his death and whose Accounts had not been
      distributed to him prior to his death, the vested portion of his Accounts,
      determined as of the date of his termination of employment, shall be held
      for the benefit of his Beneficiary. The distribution of a Participant's
      Accounts as a result of his death shall commence as soon as practical
      following the Valuation Date concurrent with or next following the
      Participant's termination of employment unless required to commence
      earlier under Section 6.11 or 6.12 of the Plan.

      The Benefits Committee may require such proper proof of death and such
      evidence of the right of any person to receive payment of the value of the
      Accounts of a deceased Participant or Former Participant as may be deemed
      desirable. The Benefits Committee's determination of death and of the
      right of any person to receive payment shall be conclusive and binding on
      all persons.

6.10  DETERMINATION OF BENEFITS UPON TERMINATION OF EMPLOYMENT. Upon the
      Participant's termination of employment before his Normal Retirement Age
      for any reason other than death or Disability, the Participant shall be
      entitled to the vested portion of his Accounts as of the date of
      termination of employment determined in accordance with Section 6.01 of
      the Plan. The distribution of a Participant's Accounts as a result of his
      termination of employment for a reason other than retirement on or after
      his Normal Retirement Date, death or Disability shall commence as soon as
      practical after the Valuation Date concurrent with or next following his
      termination of employment unless required to commence earlier under
      Section 6.11 or 6.12 of the Plan.

6.11  ERISA REQUIRED COMMENCEMENT DATE. Payment of a Participant's benefits,
      unless the Participant otherwise elects, will begin not later than the
      60th day after the latest of the close of the Plan Year in which:

      (a)  The date on which the Participant attains age 65;

      (b)  Occurs the 10th anniversary of the year in which the Participant
           commenced participation in the Plan; or

      (c)  The Participant terminates his service with the Employer.

      Any Participant who attains age 70 1/2 before January 1, 1999 may elect to
      receive distribution of his Accounts as if the Mandatory Commencement Date
      described in Section 6.12 below were the calendar year in which the
      Participant attains age 70 1/2.


                                       51

<PAGE>   53

6.12  MANDATORY COMMENCEMENT DATE. A Participant's entire interest in the Plan
      (which - does not include ancillary death benefits that are never
      available to the Participant, such as Qualified Joint and Survivor
      Annuities and Qualified Pre-Retirement Survivor Annuities, if any) shall
      be distributed to him not later than the April 1st of the calendar year
      which follows the later of (i) the calendar year in which the individual
      attains age 70 1/2 or (ii) the calendar year during which the Participant
      retires. Provided, however, that if the Participant is a 5% Owner (as
      defined in Code Section 416(i)(1)(B)(i)) with respect to the Plan Year
      during which the Participant attains age 70 1/2, the Participant's entire
      interest in the Plan shall be distributed to him not later than April 1st
      of the calendar year which follows the calendar year in which the
      individual attains age 70 1/2. Alternatively, distributions to a
      Participant may begin to be paid to the Participant by such date, provided
      that such payments are made over a period not extending beyond (or a
      combination thereof):

      (a)  The life of the Participant;

      (b)  The life of the Participant and a designated Beneficiary;

      (c)  A period certain not extending beyond the life expectancy of the
           Participant; or

      (d)  A period certain not extending beyond the joint and last survivor
           expectancy of the Participant and a designated Beneficiary.

      Notwithstanding any provision in this Plan to the contrary, if a
      Participant's benefits have commenced and the Participant dies before his
      entire interest has been distributed to him, the remaining portion of such
      interest will be distributed at least as rapidly as under the method of
      distribution being used prior to the Participant's death. However, the
      surviving Spouse may direct the commencement of benefits within a
      reasonable time after the death of the Participant.

      If a Participant dies before his distributions have commenced, such
      Participant's entire interest will be distributed within five years after
      his death. The preceding sentence shall not apply if:

      (e)  any portion of a Participant's benefit is payable to (or for the
           benefit of) any individual designated (or if the applicable law
           permits, deemed designated) as a Beneficiary by the Participant and
           such portion will be distributed over a period not extending beyond
           the life expectancy of such Beneficiary and such distribution begins
           not later than one year after the date of the Participant's death (or
           such later date as is prescribed by regulations); or


                                       52

<PAGE>   54

      (f)  if the designated Beneficiary is the Participant's surviving Spouse,
           then this Section 6.12(f) of the Plan shall apply as if the surviving
           Spouse was the Participant, except that the distribution need only
           begin on the date on which the Participant would have attained age 70
           1/2 (rather than one year after the date of the Participant's death);
           provided, however, if the surviving spouse then dies before payments
           are required to begin, then the entire interest must be distributed
           within five years of the surviving Spouse's death.

      The life expectancy of the Participant or his designated Beneficiary will
      not be recalculated each year in order to determine the minimum
      distribution requirements for each year.

      Notwithstanding anything to the contrary, the surviving Spouse of the
      Participant can direct the commencement of benefits within a reasonable
      time after the death of a Participant, subject to the restrictions on
      immediate distributions under Treasury Regulation Section
      1.417(e)-l(b)(3).

      The provisions of this Section are not intended to confer distribution
      rights on the Participant beyond those provided under any other section of
      the Plan, but are only intended to incorporate limitations required by the
      Code.

      Notwithstanding anything in this Section 6.12 to the contrary, no
      commencement of benefits shall be required to comply with this Section
      6.12 to the extent that a Participant had made a written election under
      Section 242(b)(2) of the Tax Equity and Fiscal Responsibility Act of 1982
      no later than December 31, 1983 in accordance with Revenue Notice 83-23 or
      if a Participant is permitted to delay distributions until April 1, 1990
      in accordance with Revenue Notice 89-42.

6.13  REQUIRED PARTICIPANT OR BENEFICIARY CONSENT TO DISTRIBUTE. Except as
      otherwise provided in Article XIV, if the value of a Participant's
      nonforfeitable Accounts payable under this Article VI exceeds $5,000 and
      if the benefit to be distributed is immediately distributable (prior to
      the Participant attaining (if not dead) the later of age 62 or Normal
      Retirement Age), the Participant shall be required to consent in writing
      to the distribution. No Beneficiary consent shall be required for any
      distribution under the Plan. If the Participant (and, if necessary, the
      Participant's spouse) does not consent to the immediate distribution, the
      distribution will be deferred until the Valuation Date coinciding with or
      next following the day the Participant attains age sixty-five.

6.14  FORM OF PAYMENT BEFORE JULY 1, 1996. With respect to all benefits which
      first become payable under the Plan before July 1, 1996, a Participant's
      entire interest in the Plan shall be paid in a single-sum payment as
      follows: Pre-Tax, Rollover and Transfer Accounts shall be paid in cash and
      Matching and Discretionary Accounts shall be paid in cash or kind, at the
      Participant's election (fractional shares shall be paid in cash). The


                                       53

<PAGE>   55

      amount of such cash distribution shall be determined by multiplying the
      number of whole shares of Company Stock allocated to the Participant's
      Accounts by the closing price of the Stock on the last business day
      concurrent with or immediately preceding the Valuation Date immediately
      preceding the date of distribution.

6.14A FORM OF PAYMENT AFTER JUNE 30, 1996. With respect to all benefits which
      first become payable under the Plan after June 30, 1996, a Participant or
      Beneficiary entitled to receive a benefit under the Plan shall be paid
      such benefit in the following manner:

      (a)  The normal form of benefit for an unmarried Participant shall be a
           single-sum payment as described in Section 6.14A(b)(i) below. Except
           as otherwise provided in Article XIV, the normal form of benefit
           settlement of a Participant who is married shall be a Qualified Joint
           and Survivor Annuity, and the normal form of benefit for the
           surviving spouse of a deceased Participant shall be a Pre-Retirement
           Survivor Annuity.

      (b)  The optional benefit forms which a Participant (or, if the
           Participant is married, the Participant and his spouse) may elect are
           as follows:

           (i)   Lump Sum Distribution. Payment of the Participant's entire
                 interest in the Plan in a single-sum payment. Such interest
                 shall be paid in cash, except that the Participant may elect to
                 receive Company stock credited to his account in kind (except
                 for fractional shares).

           (ii)  50% or 100% Joint and Survivor Annuity. An annuity for the life
                 of the Participant with a survivor annuity for the life of the
                 Surviving Spouse which is equal to 50% or 100% of the amount of
                 the annuity which is payable during the joint lives of the
                 Participant and the Surviving Spouse, and which is the
                 Actuarial Equivalent of a Qualified Joint and Survivor Annuity
                 for the Participant and his Surviving Spouse.

           (iii) Installment Payments. Monthly, quarterly, semiannual, or annual
                 cash installments over a specifically designated period of time
                 not extending beyond the Participant's life, the joint lives of
                 the Participant and his designated Beneficiary, the
                 Participant's life expectancy, or the joint life expectancy of
                 the Participant and his designated Beneficiary.

           (iv)  Straight Life Annuity. An annuity for the life of the
                 Participant which is the Actuarial Equivalent of 100% of the
                 Participant's nonforfeitable benefit.

           (v)   Straight Life Annuity With 10 Years Certain. An annuity for the
                 life of the Participant or ten years following the Annuity
                 Starting Date 


                                       54

<PAGE>   56
                 (whichever period is longer), which is the Actuarial Equivalent
                 of a straight life annuity for the Participant.

      (c)  A Surviving Spouse who is entitled to a Pre-Retirement Survivor
           Annuity shall be able to elect any one of the options above with
           respect to the amount of the Pre-Retirement Survivor Annuity.

      (d)  Benefits payable other than as a lump sum distribution or as
           installment payments under Section 6.14(b)(iii) shall be provided
           through the purchase of a nontransferable, conventional fixed annuity
           contract, providing payments at least annually and which satisfies
           the requirements of Code Section 401(a)(11) and 417.

      (e)  Benefits otherwise payable hereunder shall be reduced by any portion
           thereof which is being used as security for a loan from the Plan.

6.15  AMOUNTS NOT DETERMINED. If the amount of a Participant's benefit cannot be
      determined by the date on which the benefit is to commence, the benefit
      shall be paid within 60 days after the earliest date on which such amount
      can be determined.

      If a Participant's benefit remains unpaid by reason of Section 9.05 and
      subsequently the Participant or Beneficiary entitled to such benefit is
      located and the benefit restored under Section 9.05, then such benefit
      shall be paid within 60 days after the restoration of the benefit.

6.16  NO EMPLOYER DISCRETION IN BENEFIT SELECTION OR DISTRIBUTION.
      Notwithstanding anything in this Plan to the contrary, the Employer shall
      have no discretion in the selection of any form of benefit to be paid to
      any Participant. The calculation and payment of selected benefits in
      accordance with the terms of the Plan and/or the application of any
      administrative provision to the calculation or payment of benefits in
      accordance with the terms of the Plan shall not be considered an exercise
      of discretion.

6.17  REQUIRED INFORMATION. Each Participant who elects in accordance with
      Section 6.14 to take an optional form of benefit under the Plan shall
      provide such information to the committee as the same shall require in
      order to implement the election. Failure to provide such information as
      may be required in order to effect such election shall result in the
      Participant receiving the normal form of benefit under the Plan.

6.18  LIMITATIONS ON BENEFITS AND DISTRIBUTIONS. All rights and benefits,
      including elections, provided to a Participant in this Plan shall be
      subject to the rights afforded to any "alternate payee" under a "qualified
      domestic relations order" as those terms are defined in Code Section
      414(p).


                                       55

<PAGE>   57

6.19  DIRECT ROLLOVER. This Section applies to distributions made on or after
      January 1, 1993. Notwithstanding any provision of the Plan to the contrary
      that would otherwise limit a distributee's election under this Section, a
      distributee may elect, at the time and in the manner prescribed by the
      Plan Administrator, to have any portion of an eligible rollover
      distribution paid directly to an eligible retirement plan specified by the
      distributes in a direct rollover.

      For purposes of this Section the following definitions shall apply:

      (1)  An eligible rollover distribution is any distribution of all or any
           portion of the balance to the credit of the distributee, except that
           an eligible rollover distribution does not include: any distribution
           that is one of a series of substantially equal periodic payments (not
           less frequently than annually) made for the life (or life expectancy)
           of the distributes or the joint lives (or joint life expectancies) of
           the distributes and the distributee's designated beneficiary, or for
           a specified period of ten years or more; any distribution to the
           extent such distribution is required under section 401(a)(9) of the
           Code; and the portion of any distribution that is not includable in
           gross income (determined without regard to the exclusion for net
           unrealized appreciation with respect to employer securities).

      (2)  An eligible retirement plan is an individual retirement account
           described in section 408(a) of the Code, an individual retirement
           annuity described in section 408(b) of the Code, an annuity plan
           described in section 403(a) of the Code, or a qualified trust
           described in section 401(a) of the Code, that accepts the
           distributee's eligible rollover distribution. However, in the case of
           an eligible rollover distribution to the surviving spouse, an
           eligible retirement plan is an individual retirement account or
           individual retirement annuity.

      (3)  A distributee includes an Employee or former Employee. In addition,
           the Employee's or former Employee's surviving spouse and the
           Employee's or former Employee's spouse or former spouse who is the
           alternate payee under a qualified domestic relations order, as
           defined in section 414(p) of the Code, are distributees with regard
           to the interest of the spouse or former spouse.

      (4)  A direct rollover is a payment by the plan to the eligible retirement
           plan specified by the distributee.

      If a distribution is one to which sections 401(a)(11) and 417 of the
      Internal Revenue Code do not apply, such distribution may commence less
      than 30 days after the notice required under section 1.411(a)-1l(c) of the
      Income Tax Regulations is given, provided that:


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<PAGE>   58

      (1)  the plan administrator clearly informs the participant that the
           participant has a right to a period of at least 30 days after
           receiving the notice to consider the decision of whether or not to
           elect a distribution (and, if applicable, a particular distribution
           option), and

      (2)  the participant, after receiving the notice, affirmatively elects a
           distribution.

6.20  CALCULATION OF DISTRIBUTIONS AFTER APRIL 1, 1996. Notwithstanding anything
      in this Plan to the contrary, the total benefit to which a Participant
      shall be entitled by reason of retirement, termination of employment,
      death, or any other triggering event occurring on or after April 1, 1996
      shall equal the total balance of such Participant's Accounts as of the
      Valuation Date on which the investments credited to the Participant's
      Accounts are actually liquidated. All distributions which a Participant
      shall become entitled to receive by reason of a triggering event occurring
      on or after April 1, 1996 shall be made as soon as administratively
      practicable after the occurrence of such triggering event, and in no event
      later than the date required under Section 6.11 or 6.12 of the Plan.

6.21  DISTRIBUTIONS IN CONNECTION WITH DISPOSITION OF ASSETS OR SUBSIDIARIES. If
      an Employer disposes of substantially all of the assets used by such
      Employer in a trade or business, or if an Employer disposes of its
      interest in a subsidiary, distributions may be made by the Plan as
      permitted under Code Section 401(k)(10) to Participants who terminate
      their employment relationship with the Employer but who continue their
      employment relationship with the entity acquiring such assets or with the
      subsidiary.

6.22  DISTRIBUTIONS TO ALTERNATE PAYEES. Notwithstanding any provision in this
      Plan to the contrary, if an alternate payee is awarded a fixed dollar or
      percentage amount of a Participant's account balances under the Plan
      pursuant to a qualified domestic relations order, the amount so awarded
      may be distributed to such alternate payee at any time after such
      qualified domestic relations order becomes effective.

- -----------------
END OF ARTICLE VI


                                       57

<PAGE>   59

                                   ARTICLE VII

                              WITHDRAWALS AND LOANS

7.01  WITHDRAWALS IN GENERAL. Withdrawals are permitted under the Plan as
      provided in Section 7.02, 7.04, and 7.05 below. All withdrawals under the
      Plan shall be paid in a single lump sum. Withdrawals under the Plan shall
      be subject to Federal income tax withholding as prescribed by Section 3405
      of the Code and regulations thereunder.

7.02  HARDSHIP WITHDRAWALS. Upon the application of any Participant, the
      Benefits Committee, in accordance with a uniform nondiscriminatory policy,
      shall at any time permit such Participant to withdraw any portion of the
      following described Accounts, if the withdrawal is necessary in fight of
      immediate and heavy financial need of the Participant (described in
      Section 7.02(d)) and is necessary to satisfy such financial need. The
      amount of the withdrawal shall not exceed the amount required to meet the
      financial need.

      (a)  The Participant may withdraw up to 100% of his Pre-Tax Account (after
           a Participant has withdrawn all of the value of his Rollover
           Account), excluding any earnings applicable to this Account after
           December 31, 1988.

      (b)  The Participant may not have more than 3 hardship withdrawals in each
           Plan Year.

      (c)  A distribution shall be deemed to be on account of an immediate and
           heavy financial need of the Participant if the distribution is on
           account of:

           (1)  Medical expenses described in Section 213(d) of the Code
                incurred by the Employee, the Employee's Spouse or any
                dependents of the Employee (as defined in Section 152 of the
                Code);

           (2)  Purchase (excluding mortgage payments) of a principal residence
                of the Employee;

           (3)  Payment of tuition for the next semester or quarter of
                post-secondary education for the Employee, his or her Spouse,
                children or dependents;

           (4)  The need to prevent the eviction of the Employee from his
                principal residence or foreclosure on the mortgage of the
                Employee's principal residence; or


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<PAGE>   60

           (5)  Any extraordinary financial hardship deemed acceptable by the
                Commissioner of Internal Revenue Service.

      (d)  The Employer shall be permitted to reasonably rely on a Participant's
           representations that a distribution is necessary to satisfy an
           immediate and heavy financial need if the distribution is not in
           excess of the amount of the immediate and heavy financial need of the
           Employee and cannot be relieved by:

           (1)  reimbursement or compensation by insurance or otherwise;

           (2)  reasonable liquidation of the Employee's assets, to the extent
                such liquidation would not itself cause an immediate and heavy
                financial need;

           (3)  by cessation of pre-tax contributions or other Employee
                contributions under the Plan; and

           (4)  other distributions or nontaxable (at the time of the loan)
                loans from plans maintained by the Employer or by any other
                employer, or by borrowing from commercial sources on reasonable
                commercial terms.

                For purposes of this subparagraph (e), the Employee's resources
                shall be deemed to include those assets of his spouse (if any)
                and minor children (if any) that are reasonably available to the
                Employee. However, property held for the Employee's child under
                an irrevocable trust or under the Uniform Gifts to Minors Act
                will not be treated as a resource of the Employee.

      (e)  A Participant making an application under this Section shall have the
           burden of presenting to the Benefits Committee evidence of such need,
           and the Benefits Committee shall not permit withdrawal under this
           Section without first receiving such-evidence. If a Participant's
           application for a hardship withdrawal is approved, the Benefits
           Committee shall then instruct the Trustee to make payment of the
           approved amount of the hardship withdrawal to the Participant.

      (f)  The minimum amount a Participant can request as a hardship withdrawal
           from their Pre-Tax Account is $500.

      (g)  Notwithstanding subsection (d) above, a distribution will be deemed
           to be necessary to satisfy an immediate and heavy financial need of
           an Employee if all of the following requirements are satisfied:

           (1)  The distribution is not in excess of the amount of the immediate
                and heavy financial need of the Employee;


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<PAGE>   61

           (2)  The Employee has obtained all distributions, other than hardship
                distributions, and all nontaxable loans currently available
                under all plans maintained by the Employer;

           (3)  The Plan, and all other plans maintained by the Employer,
                provide that the Employee's elective contributions and employee
                contributions will be suspended for at least 12 months after
                receipt of the hardship distribution; and

           (4)  The Plan, and all other plans maintained by the Employer,
                provide that the Employee may not make elective contributions
                for the Employee's taxable year immediately following the
                taxable year of the hardship distribution in excess of the
                applicable limit under section 402(g) for such next taxable year
                less the amount of such Employee's elective contributions for
                the taxable year of the hardship distribution.

7.03  LOANS. Effective from and after July 1, 1994, the Plan provides for loans
      to Participants from or against the vested interest in the Plan in
      accordance with the written Loan Policy adopted by the Benefits Committee,
      as such Loan Policy may be amended from time to time. Such written Loan
      Policy, as amended from time to time, is expressly incorporated herein by
      reference.

7.04  WITHDRAWALS FROM ROLLOVER ACCOUNTS. Upon the application of any
      Participant, the Benefits Committee shall at any time permit such
      Participant to withdraw all of any portion of his Rollover Account. No
      Participant may make more than one withdrawal from his Rollover Account
      during any Plan Year.

7.05  IN-SERVICE WITHDRAWALS AFTER AGE 59-1/2. Except in the case of a
      bankruptcy proceeding involving the Participant, upon the application of
      any Participant who has attained age 59-1/2, the Benefits Committee shall
      at any time permit such Participant to withdraw all or any part of the
      withdrawable portion of his vested Pre-Tax Account, his Discretionary
      Account, and/or his Matching Account. No Participant may make more than
      one withdrawal from these Accounts during any Plan Year.


- ------------------
END OF ARTICLE VII


                                       60

<PAGE>   62

                                  ARTICLE VIII

                             ADMINISTRATION OF PLAN

8.01  APPOINTMENT AND TERM OF COMMITTEE. The Board of Directors shall appoint
      one or more individuals to each of the Benefits Committee and the
      Investment Committee, the members of which shall serve until their
      resignation, death or removal.

      Any person who is a director, shareholder, officer or Employee of the
      Employer shall be eligible to serve on either or both Committees.

      Vacancies on either Committee arising by resignation, death, removal or
      otherwise shall be filled by the Board of Directors. Until such vacancies
      are filled, however, the remaining members of the Committee shall carry
      out the powers and duties of the Committee. The Board of Directors, within
      30 days after the occurrence of a vacancy on the Committee, shall
      designate a successor to the open position.

      A member of either Committee may resign at any time by delivering his
      written notice of resignation to the Board of Directors, with or without
      cause or prior notice, to take effect on the specified date. The Board of
      Directors may remove a member of either Committee at any time by
      delivering a written notice of removal to the Committee member, with or
      without cause or prior notice, to take effect on the specified date.

8.02  POWERS AND RESPONSIBILITIES OF INVESTMENT COMMITTEE.

      (a)  STATEMENT OF FUNDING POLICY. The Investment Committee shall establish
           a funding policy and method, including but not limited to
           determination of the short-term objectives for liquidity and
           long-term objectives for investment growth, or shall appoint a
           qualified person to do so. The Investment Committee shall review, not
           less often than annually, all pertinent Employee information and Plan
           data in order to adjust the established funding policy and method of
           the Plan to carry out the Plan's objectives. The Investment Committee
           shall communicate the funding policy and method, and any changes
           therein, periodically as it deems appropriate, to the Trustee and any
           Investment Manager.

      (b)  APPOINTMENT OF INVESTMENT MANAGER. The Investment Committee shall
           possess the authority to appoint an Investment Manager or Managers to
           manage, including the power to acquire and dispose of, all or any of
           the assets of the Trust. In the event of any such appointment, the
           Investment Committee shall establish the portion of the assets of the
           Trust which shall be subject to the management of the Investment
           Manager and shall so notify the Trustee in writing. Neither the
           Investment Committee nor the Trustee shall have investment


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<PAGE>   63

           responsibility with respect to those assets subject to the investment
           direction of the Investment Manager. Notwithstanding the foregoing,
           the Investment Committee shall possess the authority to direct the
           Trustee as to the investment of Plan assets. In the event the
           Investment Committee exercises such power, the Trustee shall have no
           investment responsibility with respect to those assets subject to the
           investment direction of the Investment Committee.

      (c)  APPOINTMENT OF ADVISORS. The Investment Committee or the Trustee with
           the consent of the Committee may appoint counsel, specialists,
           advisers, and other persons as the Committee or the Trustee deems
           necessary or desirable in connection with the administration of this
           Plan.

      (d)  ADMINISTRATION OF PROGRAM OF SELF-DIRECTION OF INVESTMENTS BY
           PARTICIPANTS. The Investment Committee shall administer the program
           for self-direction of Accounts by Participants in accordance with
           Section 9.10 below and Section 404(c) of ERISA. So long as the
           participants in the Plan continue to have the right to direct the
           investment of their Plan account balances among various mutual funds
           or other investment alternatives (the "Investment Alternatives"), the
           Investment Committee shall:

           (1)  Select the Investment Alternatives, monitor their performance,
                and change the menu of Investment Alternatives when and as
                appropriate.

           (2)  Review periodically the Investment Alternative portfolios (if
                any), and rebalance such portfolios as and when needed.

           (3)  Select a "default" Investment Alternative for Participants who
                fail to direct the investment of their Plan account balances.

           (4)  Establish, maintain, and publicize the Plan's procedures whereby
                the Participants can direct the investment of their Plan account
                balances.

           (5)  Provide or cause to be provided to Participants adequate
                information concerning the Investment Alternatives, investment
                managers, transaction fees, and the like.

           (6)  Monitor the investment education services provided to
                Participants by the Plan (if any) to make sure that such
                activities are within the safe-harbor rules of ERISA
                Interpretive Bulletin 96-1.

           (7)  Establish and administer a procedure for passing through to
                Participants the voting rights and similar ownership rights
                associated with their Plan account investments.


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<PAGE>   64

           (8)  Appoint an independent fiduciary to carry out activities
                involving a potential for undue employer influence with respect
                to Company Stock held in Plan accounts (e.g., activities
                relating to pass-through of voting rights, tender rights, or
                other shareholder rights).

           (9)  Engage a qualified investment advisory firm to advise the
                Committee in performing the functions listed above.

      (a)  SPECIFIC POWERS AND DUTIES. The primary responsibility of the
           Benefits Committee is to administer the Plan for the exclusive
           benefit of the Participants and their Beneficiaries, subject to the
           specific terms of the Plan. The Benefits Committee shall administer
           the Plan in accordance with the terms hereof and shall have the power
           to determine all questions arising in connection with the
           administration, interpretation and application of the Plan and as
           more specifically set out in this Section and other sections of the
           Plan, except for investment matters within the purview of the
           Investment Committee. The Benefits Committee may correct any defect,
           supply any omission or reconcile any inconsistency in such manner and
           to such extent as shall be deemed necessary or advisable to carry out
           the purposes of this Plan, provided however, that any interpretation
           or construction shall be done in a nondiscriminatory manner and shall
           be consistent with the intent that the Plan shall continue to be
           deemed a qualified plan and trust under the terms of Code Sections
           401(a) and 501(a) and ERISA and all regulations issued pursuant
           thereto.

      (b)  CERTAIN AMENDMENT AUTHORITY. The Benefits Committee shall have the
           power to make amendments to the Plan on behalf of the Employer
           without prior approval of the Board of Directors of administrative
           and/or qualifying (changes required by the IRS or the DOL or a Court
           of competent jurisdiction) natures. Such amendments are authorized to
           be executed on behalf of the employer by a member of the Benefits
           Committee.

      (c)  OVERSIGHT AND REVIEW. The Benefits Committee shall periodically
           review the performance of any Fiduciary or other person to whom
           duties have been delegated or allocated by it under the provisions of
           the Plan or pursuant to procedures established hereunder, except for
           investment matters within the purview of the Investment Committee.
           This requirement may be satisfied by formal periodic review by the
           Employer or by a qualified person specifically designated by the
           Employer, through day-to-day conduct on evaluation or through other
           appropriate means.

           The Benefits Committee shall be charged with the duties of the
           general administration of the Plan, including, but not limited to,
           the following:


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<PAGE>   65


           (1)  Resolving all questions relating to the eligibility of Employees
                to participate or remain Participants hereunder;

           (2)  Computing, certifying, and directing, the Trustee with respect
                to the amount and the kind of benefits to which any Participant
                shall be entitle hereunder;

           (3)  Authorizing and directing the Trustee with respect to all
                non-discretionary or otherwise directed disbursements from the
                Trust;

           (4)  Maintaining all necessary records for the administration of the
                Plan;

           (5)  Interpreting the provisions of the Plan and making and
                publishing such rules for regulation of the Plan as are
                consistent with the terms hereof;

           (6)  Determining the size and type of any annuity contract to be
                purchased from any insurer, and designating the insurer from
                which such contract shall be purchased;

           (7)  Computing and certifying to the Employer and to the Trustee from
                time to time the sums of money necessary to desirable to be
                contributed to the Plan;

           (8)  Providing information to any Participant regarding his rights,
                benefits, or elections available under the Plan;

           (9)  Furnishing the Employer with information which the Employer may
                require for tax or other purposes;

           (10) To enforce the terms of the Plan and the rules and regulations
                the Committee adopts;

           (11) To review and render decisions respecting a claim for (or denial
                of a claim for) a benefit under the Plan; and

           (12) To determine the value of a Participant's Accounts and the
                nonforfeitable percentage of each Participant's Accounts.

      (d)  OTHER POWERS AND DUTIES. The Benefits Committee shall have all powers
           necessary or appropriate to accomplish its duties under this Plan.


                                       64

<PAGE>   66

8.03  ALLOCATION OF DUTIES AMONG COMMITTEE MEMBERS. Each Committee may select a
      Chairman from among its members. A Secretary may also be appointed by the
      Committee who may or may not be a member of the Committee. The Chairman
      shall preside at all meetings of the Committee unless, in his absence, a
      Vice Chairman selected by the Committee presides. The Secretary shall keep
      all minutes of Committee proceedings and such records and documents as are
      necessary for the proper administration of the Plan. In the event that
      only one person is appointed to the Committee, such person shall, for all
      intents and purposes, be the Chairman of the Committee.

      If more than one person is appointed to serve on a Committee, the
      responsibilities of each member may be specified by the Sponsor and
      accepted in writing by each member. In the event that no such delegation
      is made by the Sponsor, the Committee members may, by written instrument,
      allocate the responsibilities among themselves, in which event the
      Committee shall notify the Sponsor and the Trustee in writing of such
      action and specify the responsibilities of each member of the Committee.
      The Trustee thereafter shall accept and rely upon any documents executed
      by the appropriate member of the Committee until such time as the Sponsor
      or the Committee files with the Trustee a written revocation of such
      designation.

8.04  COMPENSATION OF COMMITTEE MEMBERS. Committee members may receive
      reasonable compensation for services rendered, or for the reimbursement of
      expenses properly and actually incurred in the performance of duties with
      the Plan; except that no person so serving on the Committee who already
      receives full-time pay from the Employer or an association of Employers
      whose Employees are Participants in the Plan, shall receive compensation
      from the Plan, except for reimbursement of expenses properly and actually
      incurred.

8.05  MANNER OF ACTING. Except where there has been an allocation and delegation
      of administrative authority pursuant to Section 8.03, if there shall be
      more than one member of a Committee, they shall act by a majority of their
      number.

      The Chairman or the Secretary of a Committee may execute any certificate
      or other written evidence of the action of the Committee. A Committee may
      delegate any of its rights, powers and duties to any one or more of its
      members, including the power to execute any document on behalf of the
      Committee, in which event the Committee shall notify the Board of
      Directors, the Employer and the Trustee of the name or names of its
      members so designated. The Trustee thereafter shall accept and rely upon
      any document executed by such member of members as representing action by
      the Committee until the Committee shall file with the Board of Directors,
      the Employer and the Trustee a written revocation of such designation.


                                       65

<PAGE>   67

8.06  RECORDS AND REPORTS. Each Committee shall keep a record of all actions
      taken and shall keep all other books of account, records, and other data
      that may be necessary for proper administration of the Plan and shall be
      responsible for supplying all information and reports to the Internal
      Revenue Service, Department of Labor, Participants, Beneficiaries and
      others as required by law.

8.07  INFORMATION FROM EMPLOYER. The Employer shall furnish the Trustee with
      proper written evidence of the names of the individuals duly appointed to
      each Committee and authorized to carry out the duties and responsibilities
      thereof and of any resignations, deaths, removals or replacements of
      members of the Committee.

      To enable the Benefits Committee to perform its functions, the Employer
      shall supply full and timely information to each Committee on all matters
      relating to the compensation of all Participants, Hours of Service, Years
      of Service, occurrences of retirement, death, Disability, or termination
      of employment, and such other pertinent facts and data as the Committee
      may require; and the Committee shall advise the Trustee of the foregoing
      facts as may be pertinent to the Trustee's duties under the Plan. The
      Committee and Trustee may rely upon such information as is supplied by the
      Employer and shall have no duty or responsibility to verify such
      information.

8.08  PAYMENT OF EXPENSES. Any bond which may be required by applicable laws or
      regulations for the performances of duties by members of a Committee and
      all reasonable and necessary costs, expenses, and liabilities incurred by
      the Committee in the supervision and administration of the Plan which are
      not paid by the Employer shall be a charge against the Plan assets and
      shall be paid there from by the Trustee as directed in writing by the
      Committee.

      All expenses of administration may be paid out of the Plan assets unless
      paid by the Employer. Such expenses shall include any expenses incident to
      the functioning of the Committees, including, but not limited to, fees of
      accountants, counsel, and other specialists, and other costs of
      administering the Plan. Until paid, the expenses shall constitute a
      liability of the Plan assets. However, the Employer may reimburse the
      Trust for any administration expenses incurred pursuant to the above. Any
      administration expense paid to the Trust as a reimbursement shall not be
      considered as a company contribution.

8.09  DISCRETION. Each Committee shall discharge its duties with respect to the
      Plan in the sole interest of the Participants and their Beneficiaries,
      using the care, skill and discretion that a prudent man acting in a like
      capacity and familiar with such matters would use in the conduct of an
      enterprise of a like character under the circumstances then prevailing.
      The Investment Committee, in communicating the funding policy to the
      Trustee and any Investment Manager appointed to serve the Plan, shall
      instruct them to diversify 


                                       66

<PAGE>   68

      the investments of the Trust so as to minimize the risk of large losses
      unless it is clearly prudent not to do so under the circumstances.

8.10  LIABILITY OF THE COMMITTEE. No member of a Committee shall be liable for
      any act or omission on his own part of for any other member of the
      Committee, the Trustee, any Investment Manager appointed to serve the Plan
      or any other Fiduciary or agent appointed to serve the Plan, except to the
      extent required by law and for which liability cannot be waived.

8.11  EMPLOYER LIABILITY. The Employer assumes no obligation or responsibility
      to any of its Employee's, Participants or Beneficiaries for any act of, or
      failure to act, on the part of the Committees, the Trustee or any other
      Fiduciary, except to the extent such liability cannot be waived by law.

8.12  BONDING. Every Fiduciary, except a bank or an insurance company, unless
      exempted by ERISA and regulations thereunder, shall be bonded in an amount
      not less than 10% of the amount of the fund such Fiduciary handles;
      provided, however, that the minimum bond shall be $1,000 and the maximum
      bond, $500,000. The amount of the bond shall be determined at the
      beginning of each Plan Year by the amount of funds handled by each such
      person, group, or class to be covered and their predecessors, if any,
      during the preceding Plan Year, or if there is no preceding Plan Year,
      then by the amount of the funds to be handled during the then current
      year. The bond shall provide protection to the Plan against any loss by
      reason of acts of fraud or dishonesty by the Fiduciary alone or in
      connivance with others. The surety shall be a corporate surety company (as
      such term is used in Section 412(a)(12) of ERISA), and the bond shall be
      in a form approved by the Secretary of Labor. Notwithstanding anything,
      herein to the contrary, the cost of such bonds shall be an expense of the
      Plan and may, at the election of the Benefits Committee, by paid from the
      Plan assets or by the Employer.

8.13  INDEMNIFICATION. The Employer shall indemnify each member of each
      Committee and each member of its Board of Directors from and against any
      and all liabilities, costs, or expenses incurred as a result of any act or
      omission to act in connection with the performance of fiduciary duties or
      responsibilities, if any, under this Plan and applicable laws and
      regulations, but not for liabilities and claims arising from such
      Fiduciary's will misconduct or gross negligence.

      It is specifically provided that the Employer may purchase out of its own
      funds or the Trustee may purchase out of the Trust Fund insurance for the
      members of a Committee and any other Fiduciary appointed by the Board of
      Directors, the Employer or the Committee, and for the Trust Fund itself,
      to cover liability or losses occurring by reason of the act or omission of
      any one or more of the members of the Committee or any other Fiduciary
      appointed to serve the Plan, provided such insurance permits recourse by
      the 


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<PAGE>   69

      insurer against such Fiduciaries concerned in a case for breach of a
      Fiduciary obligation by one or more Fiduciaries covered thereby.

8.14  MULTIPLE FIDUCIARY CAPACITIES. Any individual, organization, firm or other
      entity may serve in more than one Fiduciary capacity with respect to this
      Plan, including the ability to serve both as Trustee and as a member of
      one or both of the Committees.

8.15  INFORMATION TO PARTICIPANTS. The Committees shall make available to each
      Participant and any Beneficiary such record, document and other data as is
      required by ERISA and such Participant or Beneficiary shall have the right
      to examine such records at reasonable time during business hours. Nothing
      contained in this agreement, however, shall give any Participant or
      Beneficiary the right to examine any data or records reflecting the
      compensation or benefits paid to any other individual Participant or
      Beneficiary.

8.16  RELIANCE. Anyone required to give evidence under the terms of the Plan may
      do so by certificate, affidavit, document or other information which the
      person to act in reliance may consider pertinent, reliable and genuine,
      and to have been signed, made or presented by the proper party or parties.
      The Committees and the Trustee shall be fully protected in acting and
      relying upon any evidence described in this Section 8.16.

8.17  NO DECISIONS BY INTERESTED PARTY IN OWN BENEFIT. A member of a Committee
      who is also a Participant in the Plan shall not vote or act upon any
      matter relating solely to himself unless there is only one member of the
      Committee.

- -------------------
END OF ARTICLE VIII


                                       68

<PAGE>   70

                                   ARTICLE IX

                      PARTICIPANT ADMINISTRATIVE PROVISIONS
                                       AND
                                CLAIMS PROCEDURE

9.01  BENEFICIARY DESIGNATIONS. Each Participant from time to time may designate
      any person or persons (who may be designated contingently or successively
      and who may be an entity other than a natural person) as his Beneficiary
      or Beneficiaries to whom his Plan benefits are paid if he dies before
      receipt of all such benefits. Each Beneficiary designation shall be on a
      form approved by the Benefits Committee and will be effective only when
      such form is filed with the Benefits Committee during the Participant's
      lifetime.

      Each Beneficiary designation filed with the Benefits Committee will cancel
      all Beneficiary designations previously filed with the Benefits Committee.
      In the event a married Participant designates a Beneficiary other than his
      Spouse, his Spouse must acknowledge the effect of designating an alternate
      Beneficiary (or change in the form of benefit) and consent to the
      specifically named alternate Beneficiary(ies) (or to the form of benefit
      payment) in writing, and such consent must be witnessed by a notary public
      or a representative of the Benefits Committee. This consent must be on
      file with the Benefits Committee before the Beneficiary designation can be
      honored. A spousal consent filed with the Benefits Committee shall be
      applicable only with respect to the Spouse who has signed such form.

9.02  NO BENEFICIARY DESIGNATIONS. If a married Participant fails to designate a
      Beneficiary or if a married Participant names a Beneficiary other than his
      Spouse and the Spouse's consent is not on file with the Benefits
      Committee, the Participant's entire Account balance shall be paid to his
      Surviving Spouse.

      If any Participant fails to designate a Beneficiary in the manner provided
      above, or if the Beneficiary designated by a deceased Participant dies
      before him or before complete distribution of the Participant's benefits,
      the Benefits Committee in its discretion, may direct the Trustee to
      distribute such Participant's benefits (or the balance thereof) equally
      among all the persons, in the first of the following classes of preference
      Beneficiaries, in which there shall be any person surviving such
      Participant:

      (a)  the Participant's children;

      (b)  the Participant's parents;

      (c)  the Participant's brothers and sisters;


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<PAGE>   71

      (d)  the Participant's executor or administrator.

9.03  PERSONAL INFORMATION TO COMMITTEE. Each Participant and each Beneficiary
      of a deceased Participant must furnish to the Benefits Committee such
      evidence, data or information as the Benefits Committee considers
      necessary or desirable for the purposes of administering the Plan. The
      provisions of this Plan are effective for the benefit of each Participant
      upon the condition precedent that each Participant will furnish promptly
      full, true and complete evidence, data and information when requested by
      the Committee, provided the Benefits Committee shall advise each
      Participant of the effect of his failure to comply with its request.

9.04  ADDRESS FOR NOTIFICATION. Each Participant and each Beneficiary of a
      deceased Participant shall file with the Benefits Committee from time to
      time, in writing, his post office address and any change of post office
      address. Any communication, statement or notice addressed to a
      Participant, or Beneficiary, at his last post office address filed with
      the Benefits Committee, or as shown on the records of the Employer shall
      bind the Participant, or Beneficiary for all purposes of this Plan.

9.05  LOCATION OF PARTICIPANT OR BENEFICIARY UNKNOWN. In the event that all, or
      any portion, of the distribution payable to a Participant or his
      Beneficiary hereunder shah, at the expiration of two year after it shall
      become payable, remain unpaid solely by reason of the inability of the
      Administrator, after sending a registered letter, return receipt
      requested, to the last known post office address, and after further
      diligent effort, to ascertain the whereabouts of such Participant or his
      Beneficiary, such amount shall be utilized in the same manner as a
      forfeiture pursuant to this agreement. In the event a Participant or
      Beneficiary is located subsequent to his benefit being forfeited, such
      benefit shall be restored.

9.06  NOTICE OF CHANGE IN PLAN TERMS. The Benefits Committee, within the time
      prescribed by the Act and the applicable regulations, shall furnish all
      Participants and Beneficiaries a summary plan description and a summary
      description of any material modification to the Plan or notice of
      discontinuance of the Plan and all other information required by the Act
      to be furnished without charge.

9.07  REVIEW OF PLAN DOCUMENTS AND INFORMATION. Any Participant or Beneficiary
      of a deceased Participant may examine copies of the Plan, its summary
      descriptions, the latest annual report, any bargaining agreement, this
      agreement and the Trust Agreement, contract or any other instrument under
      which the Plan was established or is maintained. The Benefits Committee
      will maintain all of the items listed in this Section 9.07 in his office,
      or in such other place or places as he may designate from time to time in
      order to comply with the regulations issued under the Act, for examination
      during reasonable business hours. Upon the written request of a
      Participant or a deceased Participant's Beneficiary, the Benefits
      Committee shall furnish him with a copy of any 


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<PAGE>   72

      item listed in this Section 9.07. The Benefits Committee may make a
      reasonable charge to the requesting party for the copies so furnished.

9.08  CLAIMS PROCEDURE. Claims for benefits under the Plan may be filed with the
      Benefits Committee on forms supplied by the Employer. Written notice of
      the disposition of a claim shall be furnished to the claimant within
      ninety (90) days after the application thereof is filed. In the event the
      claim is denied, the reasons for the denial shall be specifically set
      forth in the notice in language calculated to be understood by the
      claimant, pertinent provisions of the Plan shall be cited, and, where
      appropriate, an explanation as to how the claimant can perfect the claim
      will be provided. In addition, the claimant shall be furnished with an
      explanation of the Plan's claims review procedure.

9.09  CLAIMS REVIEW PROCEDURE. Any Employee, former Employee, or Beneficiary of
      either, who has been denied a benefit by a decision of the Benefits
      Committee pursuant to Section 9.08 shall be entitled to claim by filing
      with the Benefits Committee (on a form which may be obtained from the
      Benefits Committee) a request for a hearing. Such request, together with a
      written statement of the reasons why the claimant believes his claim
      should be allowed, shall be filed with the Benefits Committee no later
      than sixty days after receipt of the written notification provided for in
      Section 9.08. The Benefits Committee shall then conduct a hearing within
      the next fifty days, at which time the claimant may be represented by an
      attorney or any other representative of his choosing and at which time the
      claimant shall have an opportunity to submit written and oral evidence and
      arguments in support of his claim. At the hearing (or upon five business
      days written notice to the Benefits Committee) the claimant or his
      representative shall have an opportunity to review all documents in the
      possession of the Benefits Committee which are pertinent to the claim at
      issue and its disallowance. Either the claimant or the Benefits Committee
      may cause a court reporter to attend the hearing and hearing and record
      the proceedings. In such event, a complete written transcript of the
      proceedings shall be furnished to both parties by the court reporter. The
      full expense of any such court reporter and such transcripts shall be
      borne by the party causing the court reporter to attend the hearing. A
      final decision as to the allowance of the claim shall be made by the
      Benefits Committee within sixty days of receipt of the appeal unless there
      has been an extension of sixty days and shall be communicated in writing
      to the claimant. Such communication shall be written in a manner
      calculated to be understood by the claimant and shall include specific
      reasons for the decision and specific references to the pertinent Plan
      provisions on which the decision is based.

9.10  INDIVIDUALLY DIRECTED INVESTMENTS. A Participant or former Participant may
      elect how their accounts shall be invested among the various investment
      alternatives established under the Plan from time to time by the
      Investment Committee. The Investment Committee shall furnish to each
      Participant and former Participant sufficient information for them to make
      informed decisions with regard to the investment alternatives available
      under the Plan. It is intended that this section 9.10 will be 


                                       71

<PAGE>   73

      administered by the Investment Committee in a manner which satisfies the
      requirements of the regulations issued under ERISA Section 404(c).

      The Investment Committee shall from time to time establish and shall
      communicate in writing to Participants and former Participants the various
      restrictions and procedures applicable to their individual direction of
      their investments. All such restrictions and procedures shall be applied
      on a uniform and nondiscriminatory basis to all similarly situated
      individuals, and shall be in compliance with the requirements of the
      regulations under ERISA Section 404(c).

      The accounts of a Participant or a former Participant form whom no
      investment direction is received by the Investment Committee shall be
      invested by the Trustee as it deems appropriate.

      The Investment Committee shall have the authority to select the various
      investment alternatives under the Plan, and shall have the ability to make
      such changes as it deems prudent in the investment alternatives available
      to Participants and former Participants. Any changes in investment
      alternatives shall be handled in a manner which allows for provision of
      adequate written notice to all Participants and former Participants and
      which allows them an appropriate time period for adjusting their
      investment directions in light of such changes in the available investment
      alternatives.

- -----------------
END OF ARTICLE IX


                                       72

<PAGE>   74

                                    ARTICLE X

                              TOP-HEAVY PROVISIONS

10.01 GENERALLY. For any Plan Year in which the Plan is a Top-Heavy Plan, the
      requirements of Sections 10.02 and 10.03 must be met in accordance with
      Section 416 of the Code and the regulations thereunder.

10.02 MAXIMUM PAY. Annual pay of any Employee shall not be taken into account
      under the Plan in excess of $150,000 for Plan Years beginning after
      December 31, 1993 (such amount to be adjusted annually for increases in
      the cost of living in accordance with Section 416(d) of the Code).

10.03 MINIMUM CONTRIBUTIONS. Minimum Employer contributions for a Participant
      who is not a Key Employee shall be required under the Plan for the Plan
      Year as follows:

      (a)  The amount of the minimum contributions shall be the lesser of the
           following percentages of Compensation (reduced by forfeitures
           allocated to a Participant's Account):

           (1)  three percent or,

           (2)  the highest percentage at which such contributions are made
                under the Plan for the Plan Year on behalf of a Key Employee.

                (A)  For purposes of this paragraph (2), all defined
                     contribution plans required to be included in an
                     Aggregation Group shall be treated as one plan.

                (B)  This paragraph (2) shall not apply if the Plan is required
                     to be included in an Aggregation Group and the Plan enables
                     a defined benefit plan required to be included in the
                     Aggregation Group to meet the requirements of Sections
                     401(a)(4) or 410 of the Code.

                (C)  For purposes of this paragraph (2), the calculation of the
                     percentage at which contributions are made for a Key
                     Employee shall be based only on his pay not in excess of
                     $200,000, such amount to be adjusted annually for increases
                     in the cost of living in accordance with Section 416(d) of
                     the Code.

                (D)  If the highest rate allocated to a Key Employee for a year
                     in which the Plan is Top-Heavy is less than 3%, any amounts
                     contributed as 


                                       73

<PAGE>   75

                     a result of a salary reduction agreement must be included
                     in determining contributions made on behalf of Key
                     Employees.

      (b)  There shall be disregarded for purposes of this Section 10.03 any
           contributions or benefits under chapter 21 of the Code (relating to
           the Federal Insurance Contributions Act), Title II of the Social
           Security Act, or any other Federal or State law.

      (c)  For purposes of this Section 10.03, the term "Participant" shall be
           deemed to refer to all Participants who have not separated from
           service at the end of the Plan Year including, without limitation,
           individuals who declined to elect or make contributions to the Plan.

      (d)  Any Employer contribution attributable to a salary reduction or
           similar arrangement shall not be taken into account.

      (e)  For any Plan Year for which the Plan is a Top-Heavy Plan, the
           Participants shall vest in their Discretionary and Matching
           Contribution Accounts in accordance with the following schedule:

<TABLE>
<CAPTION>
                   Years of Service          Vested Percentage
                   ----------------          -----------------
<S>                                          <C>
                      Less than 3                   0%
                       3 or more                  100%
</TABLE>


           A shift between vesting schedules under this Section 10.03 is an
           amendment to the vesting schedule and the Committee must apply the
           rules of Section 6.03 accordingly. A shift to a new vesting schedule
           under this Section 10.03 is effective on the first day of the Plan
           Year for which the top heavy status of the Plan changes.

10.04 SUPER TOP-HEAVY PLANS. If, for any Plan Year in which the Plan is a
      Top-Heavy Plan it is also a Super Top-Heavy Plan, then for purposes of the
      limitations on contributions and benefit under Section 415 of the Code,
      the dollar limitations in the defined benefit plan fraction and the
      defined contribution plan fraction shall be multiplied by 1.0 rather than
      1.25. However, if the application of the provisions of this Section 10.04
      would cause any individual to exceed the combined Section 415 limitations
      on contributions and benefits, then the application of the provisions of
      this Section 10.04 shall be suspended as to such individual until such
      time as he no longer exceeds the combined Section 415 limitations as
      modified by this Section 10.04. During the period of such suspension,
      there shall be no Employer contributions, forfeitures or voluntary
      nondeductible contributions allocated to such individual under this or any
      other defined 


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<PAGE>   76

      contribution plan of the Employer and there shall be no accruals for such
      individual under any defined benefit plan of the Employer.

10.05 DETERMINATION OF TOP HEAVINESS. The determination of whether a plan is
      Top-Heavy shall be made as follows:

      (a)  If the Plan is not required to be included in an Aggregated Group
           with other plans, then it shall be Top-Heavy only, if when considered
           by itself, it is a Top-Heavy Plan and it is not included in a
           permissive Aggregation Group that is not a Top-Heavy Group.

      (b)  If the Plan is required to be included in an Aggregation Group with
           other plans, it shall be Top-Heavy only if the Aggregation Group,
           including any permissively aggregated plans, is Top Heavy.

      (c)  If a plan is not a Top-Heavy Plan and is not required to be included
           in an Aggregation Group, then it shall not be Top-Heavy even if it is
           permissively aggregated in an Aggregation Group which is a Top-Heavy
           Group.

10.06 DETERMINATION OF SUPER TOP HEAVINESS. A plan shall be a Super Top-Heavy
      Plan if it would be a Top-Heavy Plan under the provisions of Section
      10.07, but substituting "90 percent" for "60 percent" in the ratio test in
      Section 10.07.

10.07 CALCULATION OF TOP-HEAVY RATIOS. A plan shall be Top-Heavy and an
      Aggregation Group shall be a Top-Heavy Group with respect to any Plan Year
      as of the Determination Date, if the sum as of the Determination Date of
      the Cumulative Accrued Benefits and the Cumulative Accounts of Employees
      who are Key Employees for the Plan Year, exceeds 60 percent of a similar
      sum determined for all Employees, excluding former Key Employees.

10.08 CUMULATIVE ACCOUNTS ACCRUED BENEFITS. The Cumulative Accounts and
      Cumulative Accrued Benefits for any Employee shall be determined as
      follows:

      (a)  "Cumulative Account" shall mean the sum of the amount of an
           Employee's accounts under a defined contribution plan (for an
           unaggregated plan) or under all defined contribution plans included
           in an Aggregation Group (for aggregated plans) determined as of the
           most recent Plan Valuation Date within a 12-month period ending on
           the Determination Date, increased by any contributions due after such
           Valuation Date and before the Determination Date.

      (b)  "Cumulative Accrued Benefit" means the sum of the present value of an
           Employee's accrued benefits under a defined benefit plan (for an
           unaggregated plan) or under all defined benefit plans included in an
           Aggregation Group (for 


                                       75

<PAGE>   77

           aggregated plans), determined under the actuarial assumptions set
           forth in such plan or plans, as of the most recent Plan Valuation
           Date within a 12-month period ending on the Determination Date as if
           the Employee voluntarily terminated service as of such Valuation
           Date.

      (c)  Accounts and benefits shall be calculated to include all amounts
           attributable to both Employer and Employee contributions but
           excluding amounts attributable to voluntary deductible Employee
           contributions.

      (d)  Accounts and benefits shall be increased by the aggregate
           distributions during the five-year period ending on the Determination
           Date made with respect to an Employee under the plan or plans as the
           case may be or under a terminated plan which, if it had not been
           terminated, would have been required to be included in the
           Aggregation Group.

      (e)  If any Employee has not performed services for the Employer
           maintaining the Plan at any time during the five-year period ending
           on the Determination Date, any accrued benefit for such Employee (and
           the account of such Employee) shall not be taken into account.

      (f)  Rollovers and direct plan-to-plan transfers shall be handled as
           follows:

           (1)  If the transfer is initiated by the Employee and made from a
                plan maintained by one employer to a plan maintained by another
                employer, the transferring plan continues to count the amount
                transferred under the rules for counting distributions. The
                receiving plan does not count the amount if accepted after
                December 31, 1983, but does count it if accepted prior to
                December 31, 1983.

           (2)  If the transfer is not initiated by the Employee or is made
                between plans maintained by the Employer, the transferring plan
                shall no longer count the amount transferred and the receiving
                plan shall count the amount transferred.

           (3)  For purposes of this Subsection (e), all employers aggregated
                under the rules of Sections 414(b), (c) and (m) of the Code
                shall be considered a single employer.

10.09 OTHER DEFINITIONS. For purposes of this Article X, the following
      definitions shall apply, to be interpreted in accordance with the
      provisions of Section 416 of the Code and the regulations thereunder:


                                       76

<PAGE>   78

      (a)  "Aggregation Group" means a plan or group of plans which includes all
           plans maintained by the employers in which a Key Employee is a
           participant or which enables any plan in which a Key Employee is a
           participant to meet the requirements of Code Section 401(a)(4) or
           Code Section 410, as well as all other plans selected by the Employer
           for permissive aggregation inclusion of which would not prevent the
           group of plans from continuing to meet the requirements of such Code
           Sections.

      (b)  "Compensation" shall have the meaning set forth in Regulation Section
           1.415-2(d)(1) and (2), except that for purposes of this Article X,
           salary deferral contributions and other deferred compensation
           contributions made to the Plan by the Employer shall be included in
           compensations.

      (c)  "Determination Date" means, with respect to any Plan Year: (1) the
           last day of the preceding Plan Year, or (2) in the case of the first
           Plan Year of any plan, the last day of such Plan Year.

      (d)  "Employee" means, for purposes of this Article X, any person employed
           by an Employer and shall also include any Beneficiary of such person,
           provided that the requirement of Sections 10.02 and 10.03 shall not
           apply to any person included in a unit of Employees covered by an
           agreement which the Secretary of Labor finds to be a collective
           bargaining agreement between Employee representatives and one or more
           employers if there is evidence that retirement benefits were the
           subject of good faith bargaining between such Employee
           representatives and such Employer or employers.

      (e)  "Employer" means any corporation which is a member of a controlled
           group of corporations (as defined in Code Section 414(b) which
           includes the Employer or any trades or businesses (whether or not
           incorporated) which are under common control (as defined in Code
           Section 414(c)) with the Employer, or a member of an affiliated
           service group (as defined in Code Section 414(m)) which includes the
           Employer.

      (f)  "Hour of Service" shall have the meaning set forth in Section 2.29.

      (g)  "Key Employee" means as of any defecation date, any Employee, former
           Employee, or Beneficiary of a former Employee who is, at any time
           during the Plan Year, or was, during any one of the four preceding
           Plan Years any one or more of the following:

           (1)  An officer of an Employer having annual Compensation greater
                than 150% of the limitation in effect under Code Section
                415(c)(1)(A) for any such Plan Year, unless 50 other such
                officers (or, if lesser, a number of 


                                       77

<PAGE>   79

                such officers equal to the greater of three or ten percent of
                the Employees) have higher annual Compensation.

           (2)  An owner (or considered an owner under Code Section 318) of one
                of the ten largest interests in the Employer if such
                individual's annual Compensation exceeds 100 percent of the
                dollar limitation in effect under Code Section 415(c)(1)(A). For
                purposes of this paragraph (2), if two Employees have the same
                interest, the one with the greater Compensation shall be treated
                as owning the larger interest.

           (3)  Any person owning (or considered as owning within the meaning of
                Code Section 318) more than five percent of the outstanding
                stock of a Employer or stock possessing more than five percent
                of the total combined voting power of such stock.

           (4)  A person who would be described in paragraph (3) above if "one
                percent" were substituted for "five percent" each place it
                appears in paragraph (3) above, and who has annual Compensation
                of more than $150,000. For purposes of determining ownership
                under this Subsection 10.09(g), Code Section 318(a)(2)(C) shall
                be applied by substituting "five percent" for "50 Percent" and
                the rules of Subsections (b), (c) and (m) of Section 414 of the
                Code shall not apply.

      (h)  "Year of Service" means a year which constitutes a "Year of Service"
           under the rules of paragraphs (4), (5) and (6) of Code Section 411(a)
           to the extent not inconsistent with the provisions of this Article X.

      (i)  "Non-Key Employee" means an Employee who is not a Key Employee.


- ----------------
END OF ARTICLE X


                                       78

<PAGE>   80

                                   ARTICLE XI

            AMENDMENT, TERMINATION AND MISCELLANEOUS PLAN PROVISIONS

11.01 INTENT TO QUALIFY. This Plan is intended to be a qualified employee
      benefit pension plan within the meaning of Code Section 401(a). The trust
      portion of the Plan is intended to be an exempt trust within the meaning
      of Code Section 501(a).

11.02 EXCLUSIVE BENEFIT/PROHIBITION ON DIVERSION OF ASSETS. This Plan has been
      executed for the exclusive benefit of the Participants and their
      Beneficiaries. So far as possible, this Plan shall be interpreted and
      administered in a manner consistent with this intent and with the
      intention of the Employer that this Plan shall at all times fully comply
      with the requirements of applicable laws and regulations. Neither the
      Employer nor either Committee shall exercise any power or right to do or
      perform any act which is in conflict with or violates such laws and
      regulations. Any power or right granted under this Plan or retained by the
      Employer shall be void to the extent that its exercise or retention shall
      violate laws and regulations. The Employer shall make any and all
      retroactive amendments to this Plan that are required under applicable
      laws and regulations in order to establish and maintain the Plan in
      conformity as a qualified Plan pursuant to Section 401(a) of the Code and
      the Trust which is a part hereof exempt pursuant to Section 501(a) of the
      Code.

      Except as provided in Section 4.10 and otherwise specifically permitted by
      law, it shall be impossible by operation of the Plan or of the Trust, by
      termination of either, by power of revocation or amendment, by the
      happening of any contingency, by collateral arrangement or by any other
      means, for any part of the corpus or income of any Trust Fund maintained
      pursuant to the Plan or any funds contributed thereto to be used for, or
      diverted to, purposes other than the exclusive benefit of Participants,
      retired Participants, or their Beneficiaries.

11.03 ERISA STATUS. This Plan shall be considered to be an employer pension
      benefit plan under ERISA Section 3(l).

11.04 NONDISCRIMINATION. All provisions of this Plan shall be interpreted and
      applied in a uniform, nondiscriminatory manner.

11.05 NONALIENATION OF BENEFITS. Subject to the exceptions provided below, no
      benefit which shall be payable out of the Trust Fund to any person
      (including a Participant or his Beneficiary) shall be subject in any
      manner to anticipation, alienation, sale, transfer, assignment, pledge,
      encumbrance or charge, and any attempt to anticipate, alienate, sell,
      transfer, assign, pledge, encumber or charge the same shall be void; and
      no such benefit shall in any manner to be liable for, or subject to, the
      debts, contracts, liabilities, engagements or torts of any such person,
      nor shall it be subject to attachment 


                                       79

<PAGE>   81

      or legal process for or against such person and the same shall not be
      recognized by the Trustee, except to the extent as may be required by law.

      The preceding paragraph shall not apply to the extent that a Participant
      or Beneficiary is indebted to the Plan, for any reason, under any
      provision of this agreement. At the time a distribution is to be made to
      or for a Participant's or Beneficiary's benefit, such portion of the
      amount distributed as shall equal such indebtedness shall be paid by the
      Trustee to the Trustee or the Benefits Committee, at the direction of the
      Benefits Committee, to apply against or discharge such indebtedness. Prior
      to making a payment, however, the Participant or Beneficiary must be given
      written notice by the Benefits Committee that such indebtedness is to be
      so paid in while or part from his nonforfeitable Accounts. If the
      Participant or Beneficiary does not agree that the indebtedness is a valid
      claim against his nonforfeitable Accounts, he shall be entitled to a
      review of the validity of the claim in accordance with the Claims and
      Claims Review Procedures under the Plan.

      The preceding paragraphs shall not apply to a qualified domestic relations
      order and such other domestic relations orders permitted to be so treated
      by the Benefits Committee under the provisions of the Retirement Equity
      Act of 1984.

      The Benefits Committee shall establish a written procedure to determine
      the qualified status of any domestic relations orders received by the Plan
      and to administer distributions under such qualified orders.

      All rights and benefits, including elections provided to Participants,
      their Spouses or Beneficiaries, shall be subject to the rights accorded
      "alternate payees" under "qualified domestic relations orders" as such
      terms are defined in Code Section 414(p). To the extent provided under a
      qualified domestic relations order, a former spouse of a Participant shall
      be treated as the Spouse, or surviving Spouse for all purposes under the
      Plan.

11.06 APPLICABLE LAW. This Plan shall be construed and administered in
      accordance with ERISA and the laws of the State of Texas, to the extent
      that such laws are not preempted by ERISA.

11.07 TITLES AND HEADINGS NOT TO CONTROL. The headings and subheadings in this
      Plan have been inserted for convenience of reference only and are to be
      ignored in any interpretation of the provisions herein.

11.08 GENDER AND NUMBER. Words used herein in the masculine or feminine gender
      shall be construed as the feminine or masculine gender, respectively,
      where appropriate. Words used in the singular or plural shall be construed
      as the plural or singular, respectively, where appropriate. 


                                       80

<PAGE>   82

11.09 SEVERABILITY. Should any provisions of this Plan be determined to be void
      by any Court of competent jurisdiction, the Plan will continue to operate,
      subject to the Board of Director's right to amend or terminate it as
      provided in Section II. 15 below, and, for the purposes of the
      jurisdiction of the Court only, will be deemed not to include the
      provision determined to be void.

11.10 NO CONTRACT OF EMPLOYMENT. The adoption and maintenance of the Plan shall
      not be deemed to constitute a contract between the Employer and any
      Participant or Employee, or to be a consideration for or inducement to
      employment of any person. Nothing herein contained shall be construed to
      give any Participant or Employee the right to be retained in the employ of
      the Employer or to interfere with the right of the Employer to terminate
      the employment of any Participant at any time.

11.11 NO DUPLICATION OF BENEFITS. There shall be no duplication of benefits
      under the Plan because of employment by more than one participating
      Employer.

11.12 LEGAL ACTION. In the event any claim, suit, or proceeding is brought
      regarding the Trust and/or Plan established hereunder to which the Trustee
      or the Benefits Committee may be a party, and such claim, suit, or
      proceeding is resolved in favor of the Trustee or Committee, they shall be
      entitled to be reimbursed from the Trust Fund for any and all costs,
      attorney's fees, and other expenses pertaining thereto incurred by them
      for which they shall have become liable.

11.13 PROTECTIVE CLAUSE. Neither the Sponsor, the Employer nor the Trustee, nor
      their successors, shall be responsible for the validity of any insurance
      contract issued hereunder or for the failure on the part of the insurer to
      make payments provided by any such contract, or for the action of any
      person which may delay payment or render a contract null and void or
      unenforceable in whole or in part.

11.14 ACTION BY EMPLOYER OR SPONSOR. Whenever the Sponsor or Employer under the
      terms of this agreement is permitted or required to do or perform any act
      or matter or thing, it shall be done and performed by a person duly
      authorized by its legally constituted authority.

11.15 RIGHT TO AMEND AND TERMINATE. The Employer hopes and expects to continue
      the Plan and the payment of contributions indefinitely, but continuance is
      not assumed as a contractual obligation. Therefore, the Employer reserves
      the right to: amend, in whole or part, terminate in whole or part, or
      discontinue contributions in whole or part, the Plan at any time and from
      time to time without the consent of any other party, subject to the
      restrictions set out below.

      At no time shall any amendment:


                                       81

<PAGE>   83

      (a)  Violate the exclusive benefit clause Section 11.02 or the prohibition
           on diversion of assets clause of the same section;

      (b)  Affect the duties, rights or responsibilities of the Trustee, the
           Plan Administrator or the Benefits Committee without the written
           consent of the affected party;

      (c)  Decrease the Accounts of a Participant, except to the extent
           permitted by Code Section 412(c)(8) or such other law, regulation or
           ruling which specifically permits the reduction of same.

           An amendment (including the adoption of this Plan as a restatement of
           the Prior Plans) shall be treated as prohibitively decreasing a
           Participant's Accounts determined immediately before the adoption of
           such amendment if it has the effect of either:

           (1)  eliminating or reducing an early retirement benefit or a
                retirement type subsidy (except-as permitted by law or
                regulations), or

           (2)  eliminating an optional form or benefit (except as permitted by
                law or regulations).

      All amendments shall be in writing and shall state the date to which it is
      either retroactively or prospectively effective.

11.16 CONSENT TO AMENDMENT BY TRUSTEE IF DUTIES INCREASED. No amendment which
      affects the rights, duties or the responsibilities of the Trustee,
      Committee or Investment Manager may be made without such party's written
      consent. The Trustee shall not be required to execute any such amendment
      unless the Trust Agreement is amended thereby.

11.17 TERMINATION OF THE PLAN. The Employer shall have the right, at any time,
      to suspend or discontinue its contributions under the Plan and to
      terminate, at any time, this Plan and the Trust. The Plan shall terminate
      upon the first to occur -of the following:

      (a)  The date terminated by action of the Employer,

      (b)  The date the Employer shall be judicially declared bankrupt or
           insolvent, or

      (c)  The dissolution, merger, consolidation or reorganization of the
           Employer or the sale by the Employer of all or substantially all of
           its assets, unless the successor or purchaser makes provision to
           continue the Plan, in which event the successor or purchaser shall
           become the Employer under the Plan.


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<PAGE>   84

      Upon termination of the Plan, the distribution provisions of the Plan
      shall remain operative, with the following exceptions:

      (d)  if a Participant's nonforfeitable Accounts do not exceed $5,000, the
           Benefits Committee shall direct the Trustee to distribute the
           Participant's nonforfeitable Accounts to him in a lump sum cash
           payment as soon as administratively practicable after the Plan
           terminates; and

      (e)  if a Participant's nonforfeitable Account exceeds $5,000, the
           Participant or his Beneficiary, in addition to the distribution
           events permitted under the Plan, may elect in writing to have the
           Trustee commence distribution of his nonforfeitable Accounts as soon
           as administratively practicable after the Plan terminates.

      To liquidate the Trust, the Investment Committee will purchase a deferred
      annuity contract for each Participant which protects the Participant's
      distribution rights under the Plan, if the Participant's nonforfeitable
      Accounts exceed $5,000 and the Participant does not elect an immediate
      distribution pursuant to paragraph (e) above.

      The Trust shall continue until the Trustee in accordance with the
      direction of the Benefits Committee has distributed all of the benefits
      under the Plan. A resolution or amendment to freeze all future Employer
      contributions but otherwise to continue to maintain this Plan, shall not
      be a termination for purposes of this Section 11.17.

11.18 VESTING UPON PLAN TERMINATION. Notwithstanding any other provision of this
      Plan to the contrary, upon either full or partial termination of the Plan
      or the complete discontinuance of contributions, an affected Participant's
      right to his Accounts derived from Employer contributions shall be one
      hundred percent vested and nonforfeitable to the extent funded.

11.19 MERGERS, CONSOLIDATIONS AND TRANSFERS. In the event of any merger or
      consolidation of the Plan with, or transfer in whole or in part of the
      assets and liabilities of the Trust Fund to another trust fund held under
      any other plan of deferred compensation maintained or to be established
      for the benefit of all or some of the Participants of this Plan, the
      assets of the Trust Fund with respect to such Participants shall be
      transferred to the other trust fund only if:

      (a)  Each Participant would (if either this Plan or the other plan then
           terminated) receive a benefit immediately after the merger,
           consolidation or transfer which is equal to or greater than the
           benefit he would have been entitled to receive immediately before the
           merger, consolidation or transfer,


                                       83

<PAGE>   85

      (b)  Actions of the Sponsor under this Plan, or of any new or successor
           Sponsor of the affected Participants, shall authorize such transfer
           or assets, and, in the case of the new or successor sponsor of the
           affected Participants, its resolutions shall include an assumption of
           liabilities with respect to such Participants' inclusion in the new
           sponsor's plan, and

      (c)  Such other plan and trust are qualified under Code Section 401(a) and
           501(a).

      The following plans have been merged into the Plan between the Effective
      Date and July 1, 1998:


<TABLE>
<CAPTION>
                         PLAN                          EFFECTIVE DATE OF MERGER
                         ----                          ------------------------
<S>                                                     <C>
          Profit Sharing Plan for Employees of the          April 1, 1995
                         USPCI Group

            Rollins Environmental Services, Inc.             June 1, 1997
                Savings and Investment Plan

             Safety-Kleen Corp. Savings and                 August 1, 1998
                    Investment Plan
</TABLE>

11.20 NAMED FIDUCIARIES. The "Named Fiduciaries" of this Plan are: (a) the
      Employer, (b) the Sponsor, (c) the Benefits Committee, (d) the Investment
      Committee, (e) the Trustee and (f) any Investment Manager appointed
      hereunder. The Named Fiduciaries shall have only those specific powers,
      duties, responsibilities, and obligations as are specifically given them
      under this agreement. In general, the Employer shall have the sole
      responsibility for making the contributions for the Participants who are
      its Employees provided for under Article IV. The Sponsor shall have the
      sole authority to appoint and remove the Trustee and the Committee; and to
      amend or terminate, in whole or in part, this agreement. The Committee
      shall have the sole responsibility for the administration of this
      agreement, which responsibility is specifically described in this
      agreement. The Trustee shall have the sole responsibility of management of
      the assets held under the Trust, except those assets, the management of
      which has been assigned to an Investment Manager, who shall be solely
      responsible for the management of the assets assigned to it, all as
      specifically provided in this agreement. Each Named Fiduciary warrants
      that any directions given, information furnished, or action taken by it
      shall be in accordance with the provisions of this agreement, authorizing
      or providing for such direction, information or action. Furthermore, each
      Named Fiduciary may rely upon any such direction, information or action of
      another Named Fiduciary as being proper under this agreement, and is not
      required under this agreement to inquire into the propriety of any such
      direction, information or action. It is intended under this agreement that
      each Named Fiduciary shall be responsible for the proper exercise of its
      own powers, duties, 


                                       84

<PAGE>   86

      responsibilities and obligations under this agreement. No Named Fiduciary
      shall guarantee the Trust Fund in any manner against investment loss or
      depreciation in asset value. Any person or group may serve in more than
      one Fiduciary capacity.

11.21 SUCCESSORS. In the event of the dissolution, merger, consolidation or
      reorganization of the Sponsor or an Employer under the Plan, provision may
      be made by which the Plan will be continued by the successor to the
      Sponsor or such Employer. In such event, such successor shall be
      substituted for the Sponsor or Employer, as the case may be, under the
      Plan. The substitution of the successor shall constitute an assumption of
      Plan liabilities by the successor and the successor shall have all the
      powers, duties and responsibilities of the Sponsor or such Employer under
      the Plan.

11.22 FIDUCIARIES NOT INSURERS. The Fiduciaries under the Plan in no way
      guarantee the Trust Fund from investment loss or depreciation. The
      Employer does not guarantee the payment of any money which may be or
      becomes due to any person from the Trust Fund. The liability of the
      Benefits Committee and the Trustee to make any payment from the Trust Fund
      at any time and all times is limited to the then available assets of the
      Trust.

11.23 NO LIABILITY. The Employer assumes no obligation or responsibility to. any
      of its Employees, Participant's or their Beneficiaries for any act of, or
      failure to act, on the part of a Committee, the Trustee or any Investment
      Manager.

11.24 NOTICE AND WAIVER OF NOTICE. Whenever written notice is required to be
      given under this Plan, such notice shall be deemed given on the date that
      such written notice is deposited at a United States Postal Service
      station, first class postage paid. Notice may be waived by any party
      entitled otherwise to receive written notice concerning any matter under
      this Plan.

11.25 EVIDENCE FURNISHED CONCLUSIVE. Anyone required to give evidence under the
      terms of the Plan may do so by certificate, affidavit, document or other
      information which the person to act in reliance may consider pertinent,
      reliable and genuine, and to have been signed, made or presented by the
      proper party or parties. The Fiduciaries under the Plan shall be fully
      protected in acting and relying upon any evidence described under this
      Section 11.25.

11.26 RETURNED PAYMENTS. If no one claims a payment or a distribution made from
      the Trust, or if a payment which was mailed to the last known post office
      address of a Participant or Beneficiary is returned because the addressee
      failed to claim the payment, the Trustee shall promptly cease benefit
      payments to such Participant, redeposit into the Trust such payment or
      payments which remain unclaimed and shall notify the Benefits Committee.
      The Benefits Committee and/or the Trustee shall conduct a reasonable


                                       85

<PAGE>   87

      search for the Participant or Beneficiary but if after a reasonable search
      has been made without success, the provisions of Section 9.05 shall apply
      to the benefit payments.

11.27 RELEASE OF CLAIMS. Any payment to any Participant, his legal
      representative, Beneficiary, or to any guardian or committee appointed for
      such Participant or Beneficiary in accordance with the provisions of this
      agreement, shall, to the extent thereof, be in full satisfaction of all
      claims hereunder against the Plan Sponsor, the Trustee and the Employer,
      either of whom may require such Participant, legal representative,
      Beneficiary, guardian or committee, as a condition precedent to such
      payment, to execute a receipt and release thereof in such form as shall be
      determined by the Sponsor, the Trustee or Employer.

11.28 PAYMENTS TO MINORS OR INCOMPETENTS. In the event a distribution is to be
      made to a minor Beneficiary, or to the custodian for such minor
      Beneficiary under the Uniform Gift to Minors Act or Gift to Minors Act, if
      such is permitted by the laws of the state in which said Beneficiary
      resides, such payment to the legal guardian, custodian or parent of a
      minor Beneficiary shall fully discharge the Trustee, Employer, and Plan
      from further liability on account thereof.

      If the Benefits Committee receives satisfactory evidence that any person
      entitled to a benefit hereunder is physically, mentally or legally
      incompetent to receive the benefit and give a valid receipt therefor at
      the time the benefit is payable, and that an individual or institution is
      then maintaining or has custody of than person and that a guardian or
      other representative of that person has been appointed to see to the
      affairs of that person, the Benefits Committee may direct the Trustee to
      pay the benefit to the individual or institution maintaining or then
      having custody of that person and the receipt by that individual or
      institution shall be a valid and complete discharge from further liability
      of the Plan to such person.

11.29 MULTIPLE COPIES OF PLAN AND/OR TRUST DOCUMENT. This agreement and the
      Trust Agreement may be executed in any number of counterparts, each of
      which shall be deemed an original, but all of which shall constitute one
      and the same agreement or Trust Agreement (as the case may be) and shall
      be binding on the respective successors and assigns of the Employer and
      other Fiduciaries.

11.30 SEGREGATION OF PLAN ASSETS. All assets of the Plan shall be held in Trust
      for the exclusive benefit of the Participants and their Beneficiaries
      hereunder.

11.31 PARTIES TO LITIGATION. Except as other provided by ERISA, only the
      Employer, the Benefits Committee and the Trustees shall be necessary
      parties to any court proceeding involving the Trustee or the Trust Fund.
      No Participant or Beneficiary shall be entitled to any notice of process
      unless required by ERISA. Any final judgment 


                                       86

<PAGE>   88

      entered in any proceeding shall be binding and conclusive upon the
      Employer, a Committee, the Trustee and the Participants and their
      Beneficiaries.


- -----------------
END OF ARTICLE XI


                                       87

<PAGE>   89

                                   ARTICLE XII

                           ADOPTION BY OTHER EMPLOYERS

12.01 ADOPTION BY OTHER EMPLOYERS. Notwithstanding anything herein to the
      contrary, with the consent of the Sponsor, any Affiliate may adopt this
      Plan and all of the provisions hereof, and participate herein and be known
      as a 'Participating Employer', by a properly executed document evidencing
      said intent and will of such Participating Employer.

12.02 DESIGNATION OF AGENT. Each Participating Employer shall be deemed to be a
      part of this Plan; provided, however, that with respect to all of its
      relations with the Trustee and Committees for the purpose of this Plan,
      each Participating Employer shall be deemed to have designated irrevocably
      the Sponsor as its agent. Unless the context of the Plan clearly indicates
      the contrary, the word "Employer" shall be deemed to include each
      Participating Employer as related to its adoption of the Plan.

12.03 AMEND. Amendment of this Plan by the Sponsor at any time when there shall
      be a Participating Employer hereunder shall only be by the written action
      of the Sponsor and with the consent of the Trustee where such consent is
      necessary in accordance with the terms of this Plan.

12.04 REQUIREMENTS OF PARTICIPATING EMPLOYERS.

      (a)  Each such Participating Employer shall be required to use the same
           Trustee as provided in this Plan.

      (b)  The Trustee may, but shall not be required to, commingle, hold and
           invest as one Trust Fund all contributions made by Participating
           Employers, as well as all increments thereof.

      (c)  The transfer of any Participant from or to a Employer participating
           in this Plan, whether he be an Employee of the Employer or a
           Participating Employer, shall not affect such Participant's rights
           under the Plan, and his Accounts as wen as his accumulated service
           time with the transferor or predecessor, and his length of
           participation in the Plan, shall continue to his credit.

12.05 PARTICIPANT TRANSFERS. It is anticipated than an Employee may be
      transferred between Participating Employers, and in the event of any such
      transfer, the Employee involved shall carry with him his accumulated
      service and eligibility. No such transfer shall effect a termination of
      employment hereunder, and the Participating Employer to which the Employee
      is transferred shall thereupon become obligated hereunder with 


                                       88

<PAGE>   90

      respect to such Employee in the same manner as was the Participating
      Employer from whom the Employee was transferred.

12.06 SEPARATE ACCOUNTING. All contributions made by a Participating Employer,
      as provided for in this Plan, shall be paid to and held by the Trustee for
      the exclusive benefit of the Employees of such Participating Employer and
      the Beneficiaries of such Employees, subject to all the terms and
      conditions of this Plan. On the basis of the information furnished by the
      Benefits Committee, the Trustee may, upon Committee request and Sponsor
      approval, keep separate books and records concerning the affairs of each
      Participating Employer hereunder and as the Accounts and credits of the
      Employees of each Participating Employer.

12.07 DISCONTINUANCE OF PARTICIPATION. Any Participating Employer shall be
      permitted to discontinue or revoke its participation in the Plan. At the
      time of any such discontinuance or revocation, satisfactory evidence
      thereof and of any applicable conditions imposed shall be delivered to the
      Trustee. The Trustee shall thereafter transfer, deliver and assign
      contracts and other Trust Funds assets allocable to the Participants of
      such Participating Employer to such new Trustee as shall have been
      designated by such Participating Employer, in the event that it has
      established a separate pension plan for its Employees. If no successor to
      the Trustee is designated, the Trustee shall retain such assets for the
      Employees of said Participating Employer pursuant to the provisions of
      Article XII hereof. In no such event shall any part of the corpus or
      income of the Trust as it relates to such Participating Employer be used
      for or diverted for purposes other than for the exclusive benefit of the
      Employees of such Participating Employer.

12.08 COMMITTEE'S AUTHORITY. The Benefits Committee shall have authority to make
      any and all necessary rules or regulations, binding upon all Participating
      Employers and all Participants, to effectuate the purpose of this Article.

12.09 PARTICIPATING EMPLOYER'S CONTRIBUTION. All contributions made by a
      Participating Employer, as provided for in this Plan, shall be paid to and
      held by the Trustee for the exclusive benefit of the Employees and their
      Beneficiaries, subject to all the terms and conditions of this Plan. On
      the basis of the information furnished by the Benefits Committee, the
      Trustee may keep separate books and records concerning the affairs of each
      Participating Employer hereunder and as to the Accounts and credits of the
      Employees of each Participating Employer.


- ------------------
END OF ARTICLE XII


                                       89

<PAGE>   91

                                  ARTICLE XIII

                        VOTING RIGHTS AND DIVERSIFICATION

13.01 TENDER RIGHTS AND OTHER SHAREHOLDER RIGHTS. A Participant or a
      Participant's Beneficiary shall be entitled to direct the Trustee as to
      the manner in which tender rights or similar shareholder rights with
      respect to Company Stock allocated to his Company Stock Account are
      exercised by the Plan for his account.

13.02 VOTING COMPANY STOCK. A Participant shall be entitled to direct the
      Trustee as to the manner in which Company Stock allocated to his Company
      Stock Account are voted by the Plan. This requirement shall apply equally
      with respect to allocated whole and fractional shares. In addition, all
      tender or exchange decisions with respect to Stock held under the Plan
      shall be made only by the Participants with respect to both allocated and
      unallocated shares in accordance with the following provisions of this
      Section 13.02:

      (a)  As soon as practicable before each annual or special shareholders'
           meeting of the issues of the Company Stock (the "Company"), the
           Trustee shall furnish to each Participant a copy of the proxy
           solicitation material sent generally to shareholders, together with a
           form requesting confidential instructions on how the shares of
           Company Stock allocated to such Participant's Accounts and a
           proportionate share of any unallocated shares are to be voted. The
           Company will cooperate with the Trustee to ensure that Participants
           receive the requisite voting information and instructions in a timely
           manner. The materials furnished to the Participants shall include a
           notice from the Trustee that the Trustee will not vote any shares
           (allocated or unallocated) for which timely instructions are not
           received by the Trustee. Upon timely receipt of such instructions,
           the Trustee (after combining votes of fractional shares to give
           effect to the greatest extent to Participants' instructions) shall
           vote the shares as instructed. If voting instructions for shares of
           Company Stock allocated or unallocated to the Account of any
           Participant are not timely received by the Trustee for a particular
           shareholders' meeting (hereinafter referred to as "Unvoted Shares"),
           such Unvoted Shares shall be voted by the Trustee in accordance with
           directions provided to the Trustee under Section 13.02(c) below. The
           instructions received by the Trustee from Participants shall be held
           by the Trustee in strict confidence and shall not be divulged or
           released to any person including directors, officers or employees of
           any Employer, except as otherwise required by law.

      (b)  With respect to all corporate matters submitted to shareholders, all
           shares of Company Stock allocated to the Accounts of Participants
           shall be voted only in accordance with the directions of such
           Participants as given to the Trustee. Each Participant shall be
           entitled to direct the voting of shares of Company Stock 


                                       90

<PAGE>   92

           allocated to the Participant's Accounts. With respect to shares of
           Company Stock allocated to the Accounts of a deceased Participant,
           such Participant's Beneficiary shall be entitled to direct the voting
           with respect to such allocated shares as if such Beneficiary were the
           Participant.

      (c)  Each Participant who has been allocated Company Stock in the
           Participant's Accounts and who is entitled to vote on any matter
           presented for a vote by the stockholders shall separately direct the
           Trustee with respect to the vote of a portion of the shares of
           Company Stock that are Unvoted Shares. Such direction shall be with
           respect to such number of votes equal to the total number of votes
           attributable to Unvoted Shares multiplied by a fraction, the
           numerator of which is the number of votes attributable to Company
           Stock allocated to the Participant's Account, and the denominator of
           which is the total number of votes attributable to Company Stock
           allocated to the Accounts of such Participants who have provided
           directions to the Trustee under this Section 13.02(c). Fractional
           shares shall be rounded to the nearest 1/1000th of a share.

      (d)  In the event an offer shall be received by the Trustee (including a
           tender offer for shares of Company Stock pursuant to Section 14(d)(1)
           of the Securities Exchange Act of 1934 or subject to Rule 13-e-4
           promulgated under that Act, as those provisions may from time to time
           be amended) to purchase or exchange any shares of Company Stock held
           by the Trust, the Trustee will advise each Participant who has shares
           of Company Stock credited to such Participant's Accounts in writing
           of the terms of the offer as soon as practicable after its
           commencement, and will furnish each Participant with a form by which
           he may instruct the Trustee confidentially whether or not to tender
           or exchange shares allocated to such Participant's Account. The
           materials furnished to the Participant shall include (i) a notice
           from the Trustee that, except as provided in this Section, the
           Trustee will not tender or exchange any shares (allocated or
           unallocated) for which timely instructions are not received by the
           Trustee and (ii) such related documents as are prepared by any person
           and provided to the shareholders of the Company pursuant to the
           Securities Exchange Act of 1934. The Company and the Trustee may also
           provide Participants with such other material concerning the tender
           or exchange offer as the Trustee or the Company in its discretion
           determines to be appropriate; provided, however, that prior to any
           distribution of materials by the Company, the Trustee shall be
           furnished with sufficient numbers of complete copies of all such
           materials. The Company will cooperate with the Trustee to ensure that
           Participants receive the requisite information in a timely manner.

      (e)  The Trustee shall tender or not tender shares or exchange shares of
           Company Stock allocated to the Accounts of any Participant (including
           fractional shares to 1/1000th of a share) only as and to the extend
           instructed by the Participant. If tender or exchange instructions for
           shares of Company Stock allocated to the 


                                       91

<PAGE>   93

           Accounts of any Participant are not timely received by the Trustee,
           the Trustee will treat the non-receipt as a direction not to tender
           or exchange such shares. The instructions received by the Trustee
           from Participants shall be held by the Trustee in strict confidence
           and shall not be divulged or released to any person, including
           directors, officers or employees of the Employer, except as otherwise
           required by law.

      (f)  If, under the terms of a tender offer or otherwise, any shares of
           Company Stock tendered for sale, exchange or transfer pursuant to
           such offer are withdrawn from such offer, the Trustee shall follow
           such instructions respecting the withdrawal of such securities from
           such offer in the same manner and the same proportion as shall be
           timely received by the Trustee from the Participants entitled under
           this Section to give instructions as to the sale exchange of transfer
           of securities pursuant to such offer.

      (g)  A Participant's instructions to the Trustee to tender or exchange
           shares of Company Stock will not be deemed a withdrawal or suspension
           from the Plan or a forfeiture of any portion of the Participant's
           interest in the Plan. Funds received in exchange for tendered shares
           will be credited to the Accounts of the Participant whose shares were
           tendered, and will be invested by the Trustee as soon as practicable
           in short term funds, including money market funds, pending receipt of
           instructions.

13.03 RIGHTS, RESTRICTIONS AND OPTIONS ON COMPANY STOCK. A share of Company
      Stock shall be subject to a put option and the restrictions of this
      Section 13.03, if and only if, at the time of its distribution from the
      Trust it is not publicly traded, or, it is subject to a 'Trading
      Limitation' when so distributed (and not otherwise prohibited by
      applicable Federal, State or other relevant law). Under any other
      circumstances of distribution, this Section 13.03 shall have no force or
      effect and no Participants or their Beneficiaries shall have any rights or
      privileges hereunder with respect to this Section 13.03.

      The Employer shall issue a "put option" to any Participant who receives a
      distribution of Company Stock. The put option shall permit the Participant
      to sell such Company Stock to the Employer at any time during two option
      periods, at the fair market value of such shares. The first put option
      period shall be for at least 60 days beginning on the date of
      distribution. The second put option period shall be for at least 60 days
      beginning after the new determination of the fair market value of Company
      Stock by the Committee (and notice to the Participant) in the following
      Plan Year. The Employer may allow the Investment Committee to direct the
      Trustee to purchase shares of Company Stock tendered to the Employer under
      a put option. The payment of any Company Stock sold under a put option
      shall be made in a lump sum or in substantially equal, annual installments
      over a period beginning not later than 30 days after exercise of the
      option 


                                       92

<PAGE>   94

      and not exceeding five years, with interest payable at a reasonable rate
      on any unpaid installment balance (as determined by the Employer or the
      Benefits Committee).

      Shares of Company Stock held or distributed by the Trustee may include
      such legend restrictions on transferability as the Employer may reasonable
      require in order to assure compliance with applicable Federal and State
      securities laws.

      In order to determine the fair market value of the Company Stock for
      purposes of issuing the put option, such stock shall be valued in
      accordance with Internal Revenue Code Regulation Section 54.4975-1
      1(d)(5).

13.04 [INTENTIONALLY OMITTED]


- -------------------
END OF ARTICLE XIII


                                       93

<PAGE>   95

                                   ARTICLE XIV

                          QUALIFIED SURVIVOR ANNUITIES

14.01 EFFECT OF THIS ARTICLE. With respect to benefits payable before July 1,
      1996, this article shall be effective only with respect to benefits
      payable from this Plan which were transferred to this Plan form a plan
      which was required to provide for the payment of such benefits in the form
      of a Qualified Joint and Survivor Annuity or a Qualified Pre-Retirement
      Survivor Annuity and for which a separate accounting of the amount so
      transferred and interest thereon has been maintained. With respect to
      benefits payable on or after July 1, 1996, this article shall be effective
      with respect to all benefits payable from this Plan.

14.02 DEFINITIONS. For the purposes of this article, the following definitions
      shall apply.

      (a)  "Qualified Joint and Survivor Annuity" shall mean an annuity for the
           life of the Participant with a survivor annuity for the fife of the
           Surviving Spouse which is equal to 100% of the amount of the annuity
           which is payable during the joint lives of the Participant and the
           Surviving Spouse and which is the Actuarial Equivalent of a single
           annuity for the life of the Participant based on 100% of the sum of
           the nonforfeitable transferred benefits and interest thereon which
           has been separately accounted for as described in Section 14.01 above
           (reduced by any amount of such benefits and interest thereon as has
           been used as security for a loan described in Code Section
           417(a)(4)).

           For an unmarried Participant, the term "Qualified Joint and Survivor
           Annuity" shall mean an annuity for the life of the Participant based
           on the amounts described above.

           The Qualified Joint and Survivor Annuity will be paid in accordance
           with Section 6.09.

      (b)  "Qualified Pre-Retirement Survivor Annuity" shall mean an annuity for
           the life of the Surviving Spouse the Actuarial Equivalent of which is
           equal to 100% of the sum of the nonforfeitable transferred benefits
           and interest thereon which has been separately accounted for as
           described in Section 14.01 above (reduced by any amount of such
           benefits and interest thereon as has been used as security for a loan
           described in Code Section 417(a)(4)), determined as of the date of
           the Participant's death.

           The Qualified Pre-Retirement Survivor Annuity will begin to be paid
           to the Surviving Spouse not later than the month in which the
           Participant would have attained the earliest retirement age under the
           Plan. Notwithstanding the 


                                       94

<PAGE>   96

           foregoing, however, a Surviving Spouse shall have the right to defer
           payment of the Qualified Pre-Retirement Surviving Annuity, in a
           written election, to a date not later than the date on which the
           Participant would have been required to have benefits commence under
           Section 6.09.

      (c)  "Surviving Spouse" shall mean the husband or wife of the Participant
           to whom the Participant was legally married on the date of death.
           Common law marriages shall be recognized as valid marriages in states
           so recognizing common law marriages, however, if a Participant is not
           legally divorced from a spouse prior to entering into a common law
           marriage, the spouse from whom he has not been legally divorced shall
           be treated as the Surviving Spouse and the Spouse hereunder.

      (d)  "Actuarial Equivalent" shall have the meaning as defined in the plan
           from which the transferred amounts originated.

      (e)  "Annuity Starting Date" shall mean the first day of the first period
           for which an amount is payable as an annuity, or in the case of a
           benefit not payable as an annuity, the first day on which all events
           have occurred which entitled the Participant to such benefit.

      (f)  The phrase, "earliest retirement age under the Plan" shall mean the
           earliest date on which the Participant could elect to receive
           retirement benefits under the Plan.

14.03 WAIVER: QUALIFIED JOINT AND SURVIVOR ANNUITY. With respect to the benefits
      subject to this article, a Participant (or, if the Participant is married,
      the Participant and his spouse) may elect to waive the Qualified Joint and
      Survivor Annuity (or designate a non-spouse Beneficiary of the survivor
      portion of the Qualified Joint and Survivor Annuity), which is the normal
      form of benefit settlement for a Participant who is married, and accept an
      optional form of benefit distribution under Section 14.05 in accordance
      with the election procedures in Section 14.06.

14.04 WAIVER: QUALIFIED PRE-RETIREMENT SURVIVOR ANNUITY. With respect to the
      benefits subject to this article, a Participant and his spouse may elect
      to waive the Qualified Pre-Retirement Survivor Annuity (or designate a
      non-spouse Beneficiary of the Qualified Pre-Retirement Survivor Annuity)
      and accept an optional form of benefit distribution under Section 14.05 In
      accordance with the election procedures in Section 14.06.

14.05 OPTIONAL BENEFIT FORMS. With respect to the benefits subject to this
      article, the available optional benefit forms which a Participant (or, if
      the Participant is married, the Participant and his spouse) may elect are
      those set out in Section 6.14.


                                       95

<PAGE>   97

14.06 ELECTION OF OPTIONAL BENEFIT FORMS AND ALTERNATIVE BENEFICIARY. Each
      Participant (and, if married, the Participant and his spouse) shall be
      provided with a written explanation of: (a) the terms and conditions of
      the Qualified Joint and Survivor Annuity; (b) the Participant's right to
      make, and the effect of, an election to waive the Qualified Joint and
      Survivor Annuity and the Qualified Pre-Retirement Survivor Annuity; (c)
      the Participant's spouse's rights regarding the election to waive either
      the Qualified Joint and Survivor Annuity and the Qualified Pre-Retirement
      Survivor Annuity, the effect of any waiver and/or revocation thereof; and,
      (d) the right of the Participant to revoke any waiver of the Qualified
      Joint and Survivor Annuity and the Qualified Pre-Retirement Survivor
      Annuity.

      The written notice regarding a Participant's rights to waive the Qualified
      Joint and Survivor Annuity shall be furnished to a Participant (and, if
      married, the Participant and his spouse) no earlier than 90 days before
      the 90 day period which ends on the Annuity Starting Date. The written
      notice regarding a Participant's rights to waive the Qualified
      Pre-Retirement Survivor Annuity shall be furnished to a Participant and
      his spouse before the last date of whichever of the following periods
      which ends last:

      (a)  The period beginning with the first day of the Plan year in which the
           Participant attains age 32 and ending with the close of the Plan Year
           preceding the Plan Year in which the Participant attains age 35;

      (b)  The one year period ending on the anniversary of the date on which an
           individual becomes a Participant;

      (c)  The one year period ending on the anniversary of the date on which
           benefits subject to this Article are transferred to the Plan; or

      (d)  The one year ending on the anniversary date on which occurs a
           Participant's separation from service, in the case of a Participant
           who separates from service before attaining age 35.

      The period during which the Participant (and, if married, the Participant
      and his spouse), at any time any number of times, may waive the Qualified
      Joint and Survivor Annuity (or designate a non-spouse beneficiary) or
      during which the Participant may revoke any previous waiver and again
      elect the Qualified Joint and Survivor Annuity (or re-designate his spouse
      as his beneficiary) shall be the 90 day period ending on the Annuity
      Starting Date.

      The period during which the Participant and his spouse may waive the
      Qualified Pre-Retirement Survivor Annuity and elect an optional form of
      benefit (or designate a non-Surviving Spouse beneficiary) or during which
      the Participant may revoke any previous waiver or designation and again
      elect the Qualified Pre-Retirement Survivor Annuity or 


                                       96

<PAGE>   98

      re-designate his spouse as his Surviving Spouse) shall begin on the first
      day of the Plan Year in which the Participant attains age 35 and ends on
      the date of the Participant's death. In the case of a Participant who has
      separated from service on or before the effective date of this article and
      who has benefits transferred to the Plan which are subject to this
      article, the period for the elections described in the preceding sentence
      shall not begin later than date of separation from service if such
      Participant separated from service prior to the attainment of age 35.

      No election to waive either a Qualified Joint and Survivor Annuity, a
      Qualified Pre-Retirement Survivor Annuity or designate a non-spouse
      beneficiary for Qualified Joint and Survivor or Qualified Pre-Retirement
      Survivor Annuity purposes shall be given effect unless: (a) the spouse of
      the Participant consents in writing to such election, (b) such election
      designates a specific form of optional benefit being elected or the
      specific beneficiary being designated or both and (c) the written consent
      of the spouse is witnessed by a Plan representative of a notary public.
      Notwithstanding the foregoing sentence, the written consent of the spouse
      shall not be required if the Participant is not married, the spouse cannot
      be located or because of such other circumstances as may be permitted by
      regulations. Spousal consent as described above shall only be effective
      with respect to the spouse giving such consent.

      Since the Plan does not permit loans, no spouse consent under Code Section
      417(a)(4) shall be required.

14.07 CASH OUTS. If the Present Value of the nonforfeitable Accounts to which
      this Article applies expressed as either a Qualified Joint and Survivor
      Annuity or a Qualified Pre-Retirement Survivor Annuity does not exceed
      $5,000 as determined above, the Committee shall direct the Trustee to
      immediately distribute the Present Value of the nonforfeitable Accounts in
      accordance with Section 6.13 and 6.14(a).

      No distribution described in the previous paragraph shall be permitted
      after the Annuity Starting Date unless the Participant and his spouse (or
      where the Participant has died, the Surviving Spouse) consents in writing
      to such distribution.

      If the Present Value of the nonforfeitable Accounts to which this Article
      applies exceeds $5,000, then the distribution rules under Section 6.13
      shall apply. With respect to this rule, the notification requirements of
      the first paragraph of Section 14.06 shall apply and the consent as
      described in the penultimate paragraph of Section 14.06 shall only be
      effective with respect to the spouse giving such consent.


- ------------------
END OF ARTICLE XIV


                                       97

<PAGE>   99

IN WITNESS WHEREOF, this Plan has been executed this _____ day of _____________,
1998.



SAFETY-KLEEN SERVICES, INC                     ATTEST:
PLAN SPONSOR



- ---------------------------                    --------------------------------
Kenneth W. Winger
President & CEO


                                       98

<PAGE>   1
                                  EXHIBIT 23.1





                       CONSENT OF INDEPENDENT ACCOUNTANTS

We consent to the incorporation by reference in this registration statement on
Form S-8 of our report dated October 7, 1997, which includes an explanatory
paragraph relating to the revised statement of cash flows for the years ended
August 31, 1996 and 1995, on our audits of the consolidated financial statements
and financial statement schedule of Laidlaw Environmental Services, Inc. as of
August 31, 1997 and 1996 and for each of the three years in the period ended
August 31, 1997, which report is incorporated by reference in the Annual Report
on Form 10-K.


/s/ PricewaterhouseCoopers LLP
- ------------------------------
    PricewaterhouseCoopers LLP



Charlotte, North Carolina
October 14, 1998


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