SERVICEMASTER LTD PARTNERSHIP
8-K, 1996-01-16
MANAGEMENT SERVICES
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                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549

                                  FORM 8-K


                               CURRENT REPORT


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

                      Date of Report:  January 15, 1996



                      SERVICEMASTER LIMITED PARTNERSHIP
           (Exact name of registrant as specified in its charter)

                       Commission File Number: 1-9378





     Delaware                One ServiceMaster Way         36-3497008
   (State or other           Downers Grove, IL 60515      (I.R.S. Employer
jurisdiction of incorporation (Address of principal       Identification 
   or organization)             executive office)              Number)
                                                                            
      





Registrant's telephone number, including area code:  (708) 271-1300

<PAGE>

Item 5.  Other Events

                                Introduction

      On December 31, 1995, ServiceMaster Limited Partnership
("ServiceMaster") completed the previously announced agreement to
exchange the 28 percent minority interest held by WMX Technologies,
Inc. ("WMX") in ServiceMaster Consumer Services L.P. for
approximately 18.1 million unregistered shares of ServiceMaster, or
approximately 19 percent of ServiceMaster's outstanding shares. 
All major terms of the transaction, which is expected to be non-
dilutive to ServiceMaster in 1996, are consistent with those
included in the previously announced letter of intent.

      All ServiceMaster shares issued in connection with the
transaction are subject to restrictions, discussed in detail below,
including limitations on open market sales and a right of first
refusal.  WMX also agreed not to initiate any action that would
increase its ownership interest in ServiceMaster to in excess of 21
percent of ServiceMaster shares issued and outstanding.  The
transaction gives ServiceMaster 100 percent ownership of its
Consumer Services subsidiary.

      The transaction, which represents a negotiated acceleration of
a conversion right previously held by WMX, is considered by both
companies as the renewal of a long-term strategic partnership that
will benefit both companies.


                   Detailed Description of the Transaction

      On December 31, 1995, ServiceMaster completed a transaction
with WMI Urban Services, Inc. ("WMUS"), a wholly owned subsidiary
of WMX Technologies, Inc. ("WMX"), in which WMUS contributed to
ServiceMaster 308,078 limited partner shares in ServiceMaster
Consumer Services Limited Partnership ("Consumer Services") and, in
consideration therefor, ServiceMaster issued 18,107,143
unregistered and restricted limited partner shares to WMUS and
granted WMUS an option under an Option Agreement (the "Option") to
acquire an additional 1,250,000 ServiceMaster limited partner
shares at a price of $33.00 per share during the period and subject
to the conditions described below.  These transactions were
completed pursuant to a Contribution Agreement, the Option
Agreement and a Relationship Agreement and represented the
negotiated acceleration of a conversion right previously held by
WMUS. 

      As a result of the exchange effected pursuant to the
Contribution Agreement, ServiceMaster increased its ownership of
Consumer Services from 72.24% to 100% and the number of
ServiceMaster's limited partner shares issued and outstanding
increased from approximately 77,150,000 to approximately
95,250,000.  The 18,107,143 limited partner shares issued to WMUS
represents approximately 19% of the total number of ServiceMaster

<PAGE>

limited partner shares issued and outstanding and 18.2% on a fully
diluted basis. 

      The Relationship Agreement referred to above was entered into
by WMX, WMUS, ServiceMaster and ServiceMaster Incorporated of
Delaware.  (ServiceMaster Incorporated of Delaware is the
corporation into which ServiceMaster presently expects to convert
by no later than December 31, 1997.  In the remainder of this Form
8-K, the term "ServiceMaster" will be used to designate both
ServiceMaster Limited Partnership and ServiceMaster Incorporated of
Delaware.)  The Relationship Agreement provides that neither WMX
nor any of its affiliates will acquire or offer to acquire,
directly or indirectly, other than through an exercise of the
Option, beneficial ownership of ServiceMaster shares if, after
giving effect to the acquisition, WMX would then own more than 21%
of ServiceMaster shares then outstanding or shares representing
more than 21% of the votes which could be cast in any election of
directors to serve on ServiceMaster's board of directors.  

      The Relationship Agreement restricts the sale, transfer,
assignment, pledge, or other direct or indirect disposition by WMX
and WMUS (other than a transfer by WMUS to WMX) of (i) the
ServiceMaster shares acquired under the Contribution Agreement and
then held by it or them, (ii) the ServiceMaster shares underlying
the Option, and (iii) the Option itself (all of which securities
are hereinafter referred to as the "Restricted ServiceMaster
Shares").  With respect to market sales of Restricted ServiceMaster
Shares, WMX has agreed to limit such sales (other than sales
pursuant to an effective registration statement, to an affiliate,
pursuant to a private placement, to ServiceMaster or sales after a
change of control of ServiceMaster) to 15% of the average daily
trading volume in ServiceMaster shares over the four calendar weeks
preceding the week of sale.  Furthermore, in no event may WMX
transfer any Restricted ServiceMaster Shares to any person who WMX
knows would be an owner of 5% or more of ServiceMaster's
outstanding shares after the transaction or who is a "Raider."  A
Raider is defined in the Relationship Agreement as anyone who has
publicly announced an intention to accomplish a Takeover (as
defined below), has been identified by ServiceMaster as considering
a Takeover or WMX knows is considering a Takeover.  The
Relationship Agreement also provides that WMX may not transfer
Restricted ServiceMaster Shares during any Arbitrage Period (as
defined in the Relationship Agreement).  WMX has agreed to instruct
any underwriters or other representatives engaged by it in
connection with a sale of Restricted ServiceMaster Shares to
observe the foregoing restrictions on sales of such shares.

      The Relationship Agreement gives ServiceMaster a first refusal
right with respect to any proposed disposition by WMX or any WMX
affiliate of Restricted ServiceMaster Shares.  This right gives
ServiceMaster the option to purchase any Restricted ServiceMaster
Shares which WMX (or any WMX affiliate) proposes to sell.  The

<PAGE>

price at which ServiceMaster may purchase such shares will be the
closing market price per ServiceMaster share on the date
immediately preceding receipt by ServiceMaster of a notice from WMX
or any WMX affiliate that it desires to sell Restricted
ServiceMaster Shares.

      The Relationship Agreement also provides that neither WMX nor
any of its affiliates will attempt to carry out any Takeover of
ServiceMaster.  A Takeover would be deemed to occur if, among other
things, (i) any person becomes the beneficial owner of more than
15% of ServiceMaster's outstanding shares or (ii) engages in
certain transactions which result in more than a 21% change in
ServiceMaster's share ownership or (iii) certain transactions occur
in connection with which a change occurs in the chief executive
officer of ServiceMaster or (iv) any person not approved by a
majority of ServiceMaster's board of directors acquires a position
on ServiceMaster's board of directors or (v) any distribution is
made to ServiceMaster's shareholders consisting of all or
substantially all of ServiceMaster's assets.  Furthermore, the
Relationship Agreement requires that neither WMX nor any of its
affiliates will propose to ServiceMaster any transaction between
WMX or its affiliates and ServiceMaster which would constitute, or
which it is reasonably possible could lead to a Takeover or endorse
or propose that ServiceMaster accept any proposal from any other
person which would result in or lead to a Takeover or enter into
discussions, negotiations, arrangements or understandings with or
advise, assist or encourage, act in concert with, or otherwise
support any person in connection with any activities which it is
reasonably possible could lead to a Takeover.  WMX is obligated to
inform ServiceMaster if any person approaches WMX regarding a
Takeover.

      WMX, on behalf of itself and its affiliates, has also agreed
that: (i) in the event of a contest for any position on
ServiceMaster's board of directors, the ServiceMaster shares held
by WMX (directly or indirectly) will be voted for the candidate
nominated by a majority of the incumbent members of ServiceMaster's
board; (ii) WMX will not vote in favor of any Takeover which is
opposed by ServiceMaster's board of directors; (iii) WMX will not
solicit proxies or consents, or become a participant in a
solicitation of proxies or consents, except in support of
solicitations made on or on behalf of ServiceMaster's board of
directors; and (iv) WMX will not vote in favor of the removal of
any general partner of ServiceMaster (unless the general partner is
guilty of gross misconduct, as defined in the agreement) or a
ServiceMaster director (unless the director is guilty of gross
misconduct, as defined in the agreement).

      The Relationship Agreement provides that one position on
ServiceMaster's board of directors will be filled by a person
nominated by WMX.  This position is currently filled by Philip B.
Rooney, President and Chief Operating Officer of WMX. 

<PAGE>

ServiceMaster has agreed that in connection with any election at
which the term of WMX's representative is scheduled to expire or
the position is vacant, ServiceMaster will nominate for election a
candidate selected by WMX who is reasonably acceptable to
ServiceMaster's board of directors.  ServiceMaster has also agreed
to request that ServiceMaster directors fill a vacancy created by
the resignation (or other reason) of a WMX representative with a
person nominated by WMX who is reasonably acceptable to the
ServiceMaster board.

      After January 1, 1998, WMX is entitled to require
ServiceMaster to register, within specified minimum and maximum
numbers of qualifying ServiceMaster shares held by WMX, under the
Securities Act of 1933, (i) the 18,107,143 ServiceMaster shares
which WMUS received under the Contribution Agreement, (ii) the
ServiceMaster Shares which WMUS may acquire under the Option, (iii)
ServiceMaster shares which WMX may acquire in compliance with the
Relationship Agreement prior to the first to occur of (a) a sale of
shares pursuant to a registration or (b) sales by WMX aggregating
more than 2% of ServiceMaster's outstanding shares, (iv) other
ServiceMaster shares acquired by WMX which ServiceMaster, in its
sole discretion, agrees to register and (v) other shares issued in
respect of the Restricted ServiceMaster Shares. ServiceMaster is
not obligated to make more than four successful demand
registrations.  The Relationship Agreement also grants WMX
piggyback registration rights with respect to the ServiceMaster
shares held by WMX.

      The Relationship Agreement grants ServiceMaster the right to
purchase the ServiceMaster Restricted Shares, at then current
market values, in the event of a change of control of WMX (as
defined in the Relationship Agreement).

      The Relationship Agreement will generally terminate on the
first to occur of (i) the first day after WMX ceases to own at
least 1% of ServiceMaster's outstanding shares and shall not have
been a 1% owner at any time during the preceding 36 consecutive
calendar months, (ii) the consummation of any change in control of
ServiceMaster or (iii) January 1, 2030.  During a time when WMX
holds 5% or less of ServiceMaster's outstanding shares, the
provisions of the Relationship Agreement concerning WMX's
representation on ServiceMaster's board of directors, the 21% limit
on the extent of WMX's ownership of ServiceMaster shares, the
requirement that WMX not facilitate or engage in a Takeover, the
provisions regarding the voting of shares of ServiceMaster shares
held by WMX, and the limitations on the transfer of ServiceMaster
shares (other than the right of first refusal) are suspended.  If
ServiceMaster undergoes a change of control (as defined in the
Relationship Agreement) the agreement terminates except as to WMX's
registration and board of director representation rights.

<PAGE>

      WMUS has the right to acquire an additional 1,250,000
ServiceMaster shares pursuant to the Option (which shares, upon
acquisition by WMUS, will be Restricted ServiceMaster Shares). 
Subject to the limitation discussed in the next paragraph, the
Option may be exercised in whole or in part during the period
January 1, 1997 to December 31, 2000.  The Option does not entitle
WMUS to any voting rights or other rights as a limited partner of
ServiceMaster prior to the effective exercise of the option and
payment of the exercise price.  The Option is not transferable by
WMUS (except to an affiliate).  When, after November 4, 1997, the
closing price of ServiceMaster's shares on the New York Stock
Exchange is equal to or greater than $39.00 per share for a period
of forty NYSE trading days (the "Forty-Day Period"), ServiceMaster
may, at its sole election, request WMUS to exercise the Option and
if WMUS does not do so, ServiceMaster will then purchase the Option
at a price equal to the number of ServiceMaster shares which may
then be purchased under the Option multiplied by the difference
between (i) the average closing market price of the ServiceMaster
shares during the Forty-Day Period and (ii) the Option exercise
price.  

      If, after exercising the Option, WMX would beneficially own
more than 21% of the issued and outstanding shares of
ServiceMaster, ServiceMaster may at its election pay WMX cash in
lieu of issuing that portion of the shares to be issued upon an
exercise of the Option which would cause the 21% ownership level to
be exceeded.  The amount of cash payable in these circumstances is
equal to the "spread" on the amount of such shares, i.e., the
number of such shares multiplied by the difference between (i) the
average closing market price of ServiceMaster's shares for the
Forty-Day Period immediately preceding WMX's final exercise notice
and (ii) the exercise price for such shares.


Item 7.  Financial Statements and Exhibits

      Financial Statements:

      The Registrant will furnish pro forma financial statements
under cover of a Form 8 as soon as practicable, but not later than
March 15, 1996.


      Exhibits:

      1.    Contribution Agreement, dated December 31, 1995, between
            ServiceMaster Limited Partnership, ServiceMaster Consumer
            Services Limited Partnership, WMI Urban Services, Inc.
            and WMX Technologies, Inc.

<PAGE>

      2.    Option Agreement, dated as of December 31, 1995, between
            ServiceMaster Limited Partnership, ServiceMaster
            Incorporated of Delaware, and WMI Urban Services, Inc. 

      3.    Relationship Agreement, dated December 31, 1995, between
            ServiceMaster Limited Partnership, ServiceMaster
            Incorporated of Delaware, WMX Technologies, Inc. and WMI
            Urban Services, Inc.

                                  Signature

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


                       SERVICEMASTER LIMITED PARTNERSHIP
                                   (Registrant)

                       By: ServiceMaster Management Corporation
                                   (general partner)

                             By:   /s/ Vernon T. Squires   
                             Sr. Vice President and General Counsel


Dated: January 15, 1996

<PAGE>

                                EXHIBIT INDEX



Exhibit Number               Description of Exhibit


      1                      Contribution Agreement dated December 31,
                             1995 among WMX Technologies, Inc., WMI
                             Urban Services, Inc., ServiceMaster
                             Limited Partnership and ServiceMaster
                             Consumer Services Limited Partnership

      2                      Option Agreement dated as of December 31,
                             1995 among WMI Urban Services, Inc.,
                             ServiceMaster Limited Partnership and
                             ServiceMaster Incorporated of Delaware

      3                      Relationship Agreement dated December 31,
                             1995 among WMX Technologies, Inc., WMI
                             Urban Services, Inc., ServiceMaster
                             Limited Partnership and ServiceMaster
                             Incorporated of Delaware



 
                          Contribution Agreement

      This Contribution Agreement has been made December 31, 1995
by: WMX Technologies, Inc. a Delaware corporation ("WMX"): WMI
Urban Services, Inc.  ("WMUS");  ServiceMaster Limited Partnership,
a Delaware limited partnership ("ServiceMaster"); and ServiceMaster
Consumer Services Limited Partnership ("ServiceMaster Consumer
Services").


                                Background

      A.   WMUS presently owns 308,078 limited partner shares in
ServiceMaster Consumer Services (the "WM Consumer Shares") which
represent approximately 28% of the ownership interest in
ServiceMaster Consumer Services.  ServiceMaster indirectly owns
substantially all of the remaining ownership interest in
ServiceMaster Consumer Services.

      B.   WMX indirectly owns the entire ownership interest in WMUS
and is WMUS' ultimate parent corporation.

      C.   ServiceMaster is a limited partnership whose partnership
shares are publicly traded on the New York Stock Exchange.

      D.   On the date hereof, the parties have engaged in a series
of interrelated steps to restructure their relationships.

      E.   Pursuant to this Agreement:

      (1)  WMUS has contributed the WM Consumer Shares to
           ServiceMaster in a transaction intended to be tax-free;

      (2)  ServiceMaster has in exchange issued to WMUS

           (a)   18,107,143 partnership shares (the "WM Partnership
                 Shares") and

           (b)   An option (the "WM Option") entitling WMUS to
                 purchase an additional 1,250,000 partnership shares
                 from ServiceMaster at the price and terms and
                 subject to the conditions specified in an Option
                 Agreement (the "WM Option Agreement") made by WMUS,
                 ServiceMaster Incorporated of Delaware ("SMI") and
                 ServiceMaster contemporaneous with this Agreement.

      F.   Contemporaneous with this Agreement, ServiceMaster, WMX,
WMUS, and SMI have entered into a Relationship Agreement to govern
aspects of their on going relationship.

      G.   This Contribution Agreement, the WM Option Agreement, and
the Relationship Agreement which have been made by ServiceMaster

<PAGE>

and WMX on the date hereof are herein collectively called the "New
Relationship Agreements."


                                 Agreement

The parties agree as follows:


1.    Contribution of WM Consumer Shares to ServiceMaster.

      1.1  Contribution.  WMUS hereby contributes the WM Consumer
Shares to ServiceMaster.

      1.2  Acceptance.  ServiceMaster hereby accepts  the WM
Consumer Shares from WMUS and herewith delivers to WMUS in exchange
the equity interests in ServiceMaster specified in Part 2.

      1.3  Consent.  ServiceMaster Consumer Services hereby consents
to the contribution of the WM Consumer Shares to ServiceMaster.

      1.4  Release.    It is the intention of the parties that upon
execution of this Agreement all interest of every kind of which WMX
or any of its affiliates may have in ServiceMaster Consumer
Services shall be contributed to ServiceMaster, and by their
execution of this Agreement both WMUS and WMX hereby convey to
ServiceMaster any other right, title or interest which either of
them may have in ServiceMaster Consumer Services whether or not now
known.  WMX hereby agrees that in the event it shall be established
that any other WMX affiliate has any interest in ServiceMaster
Consumer Services, WMX will cause that interest to be contributed
to ServiceMaster as of the time of the execution of this Agreement. 
WMX and WMUS hereby waive and release any other rights they may
have under or by reason of the Amended and Restated Agreement of
Limited Partnership of ServiceMaster Consumer Services (including
but not limited to any rights under Article 15 of that Agreement)
or any other agreement or understanding relating to their rights
with respect to ServiceMaster Consumer Services except for the
rights cited in Section 1.5 of this Agreement.

      1.5  Tax Distribution; Information.  Not later than March 15,
1996, ServiceMaster Consumer Services shall make one or more
distributions to WMUS which are sufficient (when added to all tax
distributions related to the year 1995 previously made by
ServiceMaster Consumer Services to WMUS) to provide WMUS with
distributions related to the taxable income of ServiceMaster
Consumer Services for the year 1995 in an amount which is
determined in a manner which is consistent with comparable
distributions in respect of prior year's tax distributions.  WMX
shall provide ServiceMaster with such information as ServiceMaster
may reasonably request to determine the amount which should be
distributed.  ServiceMaster Consumer Services shall provide WMX all

<PAGE>

information relevant to the period in which WMUS held its
investment in ServiceMaster Consumer Services as WMX shall request
and to which it was entitled under the terms of the ServiceMaster
Consumer Services Amended and Restated Agreement of Limited
Partnership.

2.    Issuance of Partnership Shares and Grant of Option.  In 
exchange for the contribution made by WMUS of the WM Consumer
Shares under the preceding Part 1:

      (a)  ServiceMaster herewith issues to WMUS 18,107,143
           ServiceMaster Partnership Shares (herein called the "WM
           Partnership Shares"); and

      (b)  ServiceMaster herewith grants  the WM Option to WMUS by
           executing and delivering the WM Option Agreement to WMUS
           contemporaneous with the execution of this Agreement.


3.    ServiceMaster Warranties.

      ServiceMaster hereby warrants to WMX that:

      3.1  Organization of ServiceMaster.   ServiceMaster is duly
organized, validly existing and is in good standing as a Delaware
limited partnership.

      3.2  Organization of ServiceMaster's Managing General Partner. 
The managing general partner of ServiceMaster is ServiceMaster
Management Corporation.  ServiceMaster Management Corporation is
duly organized, validly existing and is in good standing as a
Delaware corporation. 

      3.3  No Conflict.  The execution and delivery of the New
Relationship Agreements, the issuance of the Partnership Shares
under Part 2 of this Agreement and the granting of the WM Option do
not contravene and the issuance of the WM Option Shares upon
occurrence of the WM Option will not contravene: (i) any provision
of ServiceMaster's certificate of limited partnership or
ServiceMaster's agreement of limited partnership; (ii) the
certificate of incorporation of ServiceMaster Management
Corporation or the bylaws of ServiceMaster Management Corporation;
(iii) the certificate of incorporation or bylaws of SMI; (iv) any
agreement to which ServiceMaster, ServiceMaster Management
Corporation or SMI is a party; or (v) any provision of any law or
regulation applicable to ServiceMaster, ServiceMaster Management
Corporation or SMI.

      3.4  Authorization.  The execution and delivery of each of the
New Relationship Agreements and the consummation of the
transactions contemplated by each of the New Relationship
Agreements (including, but not limited to, the issuance of the WM

<PAGE>

Partnership Shares and the granting of the WM Option) has been duly
authorized by the Board of Directors of ServiceMaster Management
Corporation.  Each of ServiceMaster, SMI and ServiceMaster Consumer
Services has duly executed and delivered each of the New
Relationship Agreements to which it is a party.

      3.5  WM  Shares as Fully Paid and Non-Assessable.  The WM
Partnership Shares have been validly issued and are fully paid and
non-assessable.  The shares which will be issued to WMUS upon a
valid exercise of the WM Option (the "WM Option Shares") will upon
issuance and upon receipt by ServiceMaster or SMI (as the case may
be) of the consideration prescribed by the WM Option Agreement be
fully paid and nonassessable.  ServiceMaster has obtained all
approvals necessary for listing  (subject to notice of issuance) on
the New York Stock Exchange of the WM Partnership Shares and the WM
Option Shares (which are collectively called the "WM  Shares" in
this Agreement).

      3.6  No Adverse Interest.  The WM Partnership Shares have been
issued (and the WM Option Shares will when issued be) free and
clear of all liens, claims, encumbrances and restrictions, except
that the WM Shares (i) have not been registered under either state
or federal securities laws and, therefore, the transferability of
the WM Shares is restricted as provided by such laws, (ii) are
subject to the right of first refusal and other restrictions
specified in the Relationship Agreement or in ServiceMaster's
Partnership Agreement.

      3.7  Financial Statements.  The financial statements of
ServiceMaster which have been included in its Annual Report on Form
10-K for 1994 (the "1994 10-K") and its Quarterly Report on Form
10-Q for the periods ending September 30, 1995 (the "third quarter
10-Q") were prepared in accordance with generally accepted
accounting principles applied on a consistent basis and present
fairly the financial condition and results of operations of
ServiceMaster for the dates and as of the periods stated therein
except that the financial statements included in the third quarter
10-Q omits footnotes and condenses information as permitted by the
rules applicable to the preparation of 10-Q reports and are subject
to adjustments to be made in the course of the preparation of
ServiceMaster's annual financial statements for 1995.

      3.8  No Knowledge of Adverse Matters.  ServiceMaster is not
aware of any fact or set of facts or trend or known uncertainty
which has materially and adversely affected or may reasonably be
expected to materially and adversely affect ServiceMaster's
business, financial condition or results of operations (whether
actual or prospective) which are not disclosed by the financial
statements referred to above, by information either publicly
disclosed by ServiceMaster or otherwise communicated in writing by
ServiceMaster to a senior officer of WMX.

<PAGE>

      3.9  ServiceMaster's Public Reports Are Not Misleading. 
Neither the 1994 10-K nor the third quarter 10-Q makes any untrue
statement of a material fact or omits to state a material fact
which is necessary in order to make statements made, in the
circumstances under which they were made, not misleading.


4.    Private Placement Procedures.

      4.1  Information.  WMX acknowledges that ServiceMaster has
advised WMX that ServiceMaster has been prepared to provide any
information relevant to the decision to dispose of the WM Consumer
Shares, to acquire the WM Partnership Shares or the WM Option, or
other investment decision inherent in the New Relationship
Agreements (herein collectively called "relevant information"), 
that ServiceMaster has provided WMX with all relevant information
which WMX has requested, and that there is no relevant information
which WMX or WMUS desires but has not received.

      4.2  Private Placement Restrictions.   Each of WMX and WMUS
understands that:

      (a)  neither the WM Partnership Shares nor the WM Option have
           been registered or qualified under the Securities Act of
           1933 or any other Securities Laws and that the shares
           issuable upon  exercise of the WM Option will not be so
           registered when they are issued; 

      (b)  ServiceMaster's obligations to register the WM
           Partnership Shares and the WM Option Shares are limited
           to those set forth in the Relationship Agreement; and

      (c)  both the Securities Laws and the Relationship Agreement
           impose restrictions on the offer and sale of the WM
           Shares.

      4.3  Acknowledgment of Good Private Placement. Each of WMX and
WMUS warrants that it is familiar with the Securities Law
requirements relevant to the acquisition of the WM Consumer Shares
by ServiceMaster and the issuance by ServiceMaster of the WM
Partnership Shares and the WM Option and that (i) each of WMX and
WMUS has concluded that no registration under the Securities Act of
1933 is required in connection of any of such actions and (ii)
neither WMX nor WMUS has any reason to believe that such actions do
not comply with any other requirements of the Securities Laws.  The
term "Securities Laws" whenever it is used in this Agreement means
all of the following laws as constituted at the time as of which
the term shall be applied: The Securities Act of 1933; the
Securities Exchange Act of 1934; all other federal and state laws
governing the offer, sale, purchase or other activities involving
securities; and all governmental regulations and requirements
issued or arising under any of these laws.

<PAGE>

5.    WM Warranties.  Each of WMX and WMUS hereby warrants to
ServiceMaster and ServiceMaster Consumer Services that:

      5.1  Organization.  It is duly organized, validly existing and
is in good standing as a Delaware corporation. 

      5.2  Authorization.  The execution and delivery of each of the
New Relationship Agreements and the consummation of the
transactions contemplated by each of the New Relationship
Agreements has been duly authorized by its board of directors and
(in the case of WMUS) by its sole stockholder.  Each of WMX and
WMUS has duly executed and delivered each of the New Relationship
Agreements to which it is a party.

      5.3  No Adverse Interest.  The WM Consumer Shares have been
conveyed to ServiceMaster free and clear of all liens, claims,
encumbrances and restrictions, except that (i) the WM Consumer
Shares are subject to the restrictions specified in the partnership
agreement governing ServiceMaster Consumer Services and
restrictions on resale under securities laws and (ii) no warranty
is made with respect to any liens, claims, encumbrances and
restrictions to which such shares may have become subject before
they were issued to WMUS (provided that WMX warrants that it has no
knowledge of any such preexisting liens, claims, encumbrances or
restrictions).

      5.4  No Conflict.  The execution and delivery of the New
Relationship Agreements and the disposition of the WM Consumer
Shares does not contravene: (i) any provision of the certificate of
incorporation or bylaws of WMX or WMUS; (iii) any agreement to
which WMX or WMUS is a party; or (iv) any provision of any law or
regulation applicable to WMX or WMUS.

<PAGE>

6.    General Provisions

      6.1  Interpretative Rules.  The provisions contained in
Sections 12.2 - 12.10 of the Relationship Agreement are
incorporated herein by reference, for purposes of such
incorporation shall be deemed to refer to this Agreement, and as so
incorporated shall govern this Agreement to the same extent as if
set forth at this place.

      6.2  Governing Law.  This Agreement shall be governed by and
construed in accordance with the internal laws of the State of
Delaware, without giving effect to any choice of law or conflict of
law rules or provisions (whether of Delaware or any other
jurisdiction) that would cause the application of the laws of any
jurisdiction other than Delaware.

      6.3  Survival of Warranties.  All warranties in this Agreement
and those in each New  Relationship Agreement shall survive the
execution, delivery and performance of this Agreement and the New
Relationship Agreements and the closing of the transactions
contemplated hereby and thereby.

                       *  *  *  *  *  *  *  *  *  * 

<PAGE>

      Each party has executed this document at the place provided
below in order to evidence such party's agreement to be bound by
all of its terms.



WMX TECHNOLOGIES, INC.

By:/s/ Dale B. Tauke     
      Name:________________________
      Title:_______________________



WMI URBAN SERVICES, INC.

By: /s/ Dale B. Tauke     
      Name:________________________
      Title:_______________________



SERVICEMASTER LIMITED PARTNERSHIP

By: ServiceMaster Management Corporation
      As Managing General Partner


      By: /s/ Ernest J. Mrozek   
           Name: Ernest J. Mrozek   
           Title:Sr. V.P. - C.F.O.   



SERVICEMASTER CONSUMER SERVICES LIMITED PARTNERSHIP

By: ServiceMaster Consumer Services, Inc.
      As Managing General Partner

      By: /s/ Ernest J. Mrozek    
           Name:   Ernest J. Mrozek     
           Title: Vice President      



                             OPTION AGREEMENT


      This Option Agreement is made as of this 31st day of December,
1995, among WMI URBAN SERVICES, INC. ("WMUS"), SERVICEMASTER
LIMITED PARTNERSHIP, a Delaware limited partnership ("SMLP") and
SERVICEMASTER INCORPORATED OF DELAWARE, a Delaware corporation
("SMI").

      RECITALS:

           A.    WMUS presently owns 308,078 limited partner
      shares in ServiceMaster Consumer Services Limited
      Partnership, a Delaware limited partnership (the "WMUS
      Consumer Services Shares");

           B.    SMLP is a limited partnership whose limited
      partner shares are publicly traded on the New York Stock
      Exchange; and

           C.    Pursuant to a Contribution Agreement (the
      "Contribution Agreement") between SMLP, WMUS and WMX
      Technologies, Inc. ("WMX"), dated as of the date hereof,
      WMUS shall contribute the WMX Consumer Services Shares to
      SMLP in exchange for 18,107,143 limited partner shares of
      SMLP and the execution and delivery to WMUS by SMLP of
      this Option Agreement.

      NOW, THEREFORE, in consideration of the foregoing and the
terms and conditions set forth below, the parties agree as follows.

1.     THE OPTION

      1.1  Grant of Option.  In partial consideration for the
contribution made by WMUS of the WMUS Consumer Services Shares
pursuant to the Contribution Agreement, SMLP hereby issues to WMUS
an option (the "Option") to acquire 1,250,000 shares (the
"ServiceMaster Shares") of the limited partner interest in SMLP
(i.e., the equity security issued by SMLP which is listed on the
New York Stock Exchange on the date hereof on the terms and subject
to the limitations specified herein.  Equity Securities of the type
to be issued pursuant hereto are referred to herein as the
"ServiceMaster Shares."

      1.2  Exercise Price. The contribution to be made by WMUS or if
WMUS is not the holder of the Option at such time, the holder of
the Option, to SMLP for the acquisition of ServiceMaster Shares
upon exercise of the Option shall be $33.00 per ServiceMaster
Share, subject to the adjustment as provided in Section 5, (the
"Exercise Price").

      1.3  Term.  The term of the Option shall be the period January
1, 1996 to December 31, 2000.  The Option may be exercised at any
time, in whole or in part, during the period (herein called the

<PAGE>

"Exercise Period") from and including January 1, 1997, to and
including December 31, 2000.  In no event may the Option be
exercised prior to January 1, 1997 or after December 31, 2000.

      1.4  Procedure for Exercising the Option. 

      (a)  If WMUS contemplates exercising the Option (in whole or
in part), WMUS and SMLP shall proceed as follows:

           (i)   WMUS shall notify SMLP, in writing, that WMUS
      proposes to exercise the Option for the number of
      ServiceMaster Shares set forth in such notice subject to
      the satisfaction of the conditions set forth in this
      Section 1.4 (the "Preliminary Exercise Notice").

           (ii)  Within ten business days after the receipt of
      the Preliminary Exercise Notice, SMLP shall provide WMUS
      with: (1) a copy of SMLP's most recently filed Annual
      Report on Form 10-K, (2) copies of each Quarterly Report
      on Form 10-Q filed by SMLP since the date of item (1),
      (3) copies of each Report on Form 8-K filed by SMLP since
      the date of item (1), (4) a copy of SMLP's most recent
      annual report to shareholders (5) a copy of each
      quarterly statement to shareholders as sent since the
      date of such annual report and (6) a certificate of SMLP
      containing the representations set forth in paragraph (b)
      below (the "Review Materials").

           (iii)       WMUS shall have five business days after
      the receipt of the Review Materials to review the Review
      Materials (the "Review Period").  During the Review
      Period, representatives of SMLP shall remain reasonably
      available to respond to any   reasonable inquiries  WMUS
      may make with respect to the Review Materials or with
      respect to the business and condition of SMLP.  If WMUS
      fails to act prior to the end of the Review Period, WMUS
      shall have no liability and WMUS's rights with respect to
      the Option shall not be prejudiced in any way.

           (iv)  Prior to the close of the Review Period, WMUS
      shall notify SMLP, in writing, whether WMUS will proceed
      to exercise the Option in accordance with the Preliminary
      Exercise Notice (subject to satisfaction of the
      conditions to closing as set forth below) or whether WMUS
      has determined not to exercise the Option at this time
      (the "Final Exercise Notice").  If, in the Final Exercise
      Notice, WMUS elects to exercise the Option, the parties
      shall proceed to a closing of the transaction as provided
      in paragraphs (d) and (e) below.  If WMUS elects not to
      exercise the Option in accordance with the Preliminary
      Exercise Notice,  WMUS's rights with respect to the
      Option shall not be prejudiced in any way.

<PAGE>

      (b)  The representations referred to in item (ii) of paragraph
(a) shall be the following:

           (i)   if the representations are made prior to the
      Reincorporating Merger (as defined in Section 4 hereof),
      SMLP is duly organized, validly existing and is in good
      standing as a limited partnership in the state of its
      organization; and if the representations are made after
      the Reincorporating Merger, SMI (as defined in Section 4
      hereof), is duly organized, validly existing and is in
      good standing as a corporation in the state of its
      organization;

           (ii)  the issuance of the ServiceMaster Shares
      issuable in response to WMUS's exercise of the Option
      does not contravene: (A) any provision in SMLP's
      certificate of limited partnership or SMLP's agreement of
      limited partnership if SMLP is then a limited partnership
      or any provision in SMLP's certificate of incorporation
      or bylaws if SMLP is then a corporation; (B) any
      agreement to which SMLP is a party; or (C) any provision
      of any law or regulation;

           (iii)       the ServiceMaster Shares issuable in
      response to WMUS's exercise of the Option will, upon
      issuance, have been duly authorized by SMLP's governing
      authority;

           (iv)  the ServiceMaster Shares as issued in response
      to WMUS's exercise of the Option will be free and clear
      of all liens, claims, encumbrances and restrictions
      (except for securities laws restrictions described in
      paragraph (c) below and the restrictions under the
      Relationship Agreement between WMX, WMUS,  SMLP and SMI
      dated as of the date hereof, as amended from time to
      time, the "Relationship Agreement");

           (v)   Upon payment of the Exercise Price for the
      ServiceMaster Shares issued in response to WMUS's
      exercise of the Option, such ServiceMaster Shares will be
      fully paid and non-assessable;

           (vi)  The financial statements of SMLP which have
      been included in its Annual Report on Form 10-K and
      SMLP's Quarterly Reports on Form 10-Q delivered to WMUS
      in connection with the Preliminary Exercise Notice were
      prepared in accordance with generally accepted accounting
      principles applied on a consistent basis and present
      fairly the financial condition and results of operations
      of SMLP for the dates and as of the periods stated
      therein except that the financial statements included in
      SMLP's Quarterly Reports on Form 10-Q omit footnotes and

<PAGE>

      condense information as permitted by the rules applicable
      to the preparation of 10-Q reports and are subject to
      adjustments to be made in the course of the preparation
      of SMLP's annual financial statements;

           (vii)       SMLP is not aware of any fact or set of
      facts or trend or known uncertainty which has materially
      and adversely affected or may reasonably be expected to
      materially and adversely affect SMLP's business,
      financial condition or results of operations (whether
      actual or prospective) which are not disclosed in the
      Review Materials or by information either publicly
      disclosed by SMLP or otherwise communicated in writing by
      SMLP to a senior officer of WMX; and

           (viii)      a statement of the capitalization of SMLP
      as at the date of the Preliminary Exercise Notice which
      shall include a listing of all options, warrants or other
      rights to acquire equity interests in SMLP which are then
      outstanding.

      (c)  WMUS acknowledges that the ServiceMaster Shares to be
issued by SMLP in response to the Preliminary Exercise Notice and
the Final Exercise Notice will not be registered securities under
state or federal securities laws and that the certificate(s)
representing such ServiceMaster Shares will have a legend to such
effect.  WMUS will deliver a certificate to SMLP at the Option
Closing (hereinafter defined) to the effect that WMUS is acquiring
such ServiceMaster Shares for investment and not with a view to the
distribution or resale, except in compliance with federal and state
securities laws.

      (d)  If WMUS elects to exercise the Option as set forth above,
the closing of the transaction (the "Option Closing") shall occur
within ten business days after the Final Exercise Notice has been
received by SMLP.

      (e)  At the Option Closing: 

           (i)   as a condition to the obligation of WMUS to pay
      the Exercise Price for the ServiceMaster Shares for which
      the Option is being exercised, SMLP shall deliver to WMUS
      a letter or certificate which restates, as at the date of
      the Option Closing, the representations set forth in
      paragraph (b) above; 

           (ii)  as a condition to the obligation of SMLP to
      deliver the certificate(s) for the ServiceMaster Shares
      to be purchased by WMUS, WMUS shall deliver to SMLP a
      letter or certificate which makes the investment
      representation set forth in paragraph (c) above; and

<PAGE>

           (iii)       upon satisfaction of the condition in
      clause (ii), SMLP shall deliver one or more certificates
      for the ServiceMaster Shares to be issued to WMUS and 
      upon satisfaction of the condition in clause (i), WMUS
      shall pay to SMLP the Exercise Price therefor by wire
      transfer of immediately available funds.

      (f)  If an Option Closing fails to occur within ten business
days after the Final Exercise Notice has been received by SMLP
because of a failure of SMLP to satisfy a condition precedent to
WMUS's obligation to close and WMUS does not waive such condition,
then WMUS may elect not to close, provided, however, that WMUS
shall have no liability and WMUS's rights with respect to the
Option shall not be prejudiced in any way.

      (g)  Notwithstanding the foregoing provisions of this Section
1.4, if a Final Exercise Notice is given and if, after giving
effect to an issuance of ServiceMaster Shares pursuant to such
Final Exercise Notice, WMX would beneficially own more than 21% of
the ServiceMaster Shares outstanding determined on a fully diluted
basis in accordance with generally accepted accounting principles,
then to the extent that such 21% figure is exceeded, ServiceMaster
may, at its election, substitute the Cash Out Amount (defined
below) for that number of ServiceMaster Shares which produces such
excess over 21% (the "Excess Shares").  Such election shall be
made, if at all, by delivery of a notice to WMUS by not later than
the fifth business day after the Final Exercise Notice has been
received by SMLP.  The Cash Out Amount shall be equal to the value
of the "spread" on the Excess Shares, i.e., the amount determined
by multiplying the number of Excess Shares by the excess (if any)
of (i) the average Market Price Per Share (as defined in Section
6.3(b) of the Relationship Agreement) of the ServiceMaster Shares
during the forty New York Stock Exchange trading days period
immediately preceding the final Exercise Notice over (ii) the
Exercise Price.  Upon payment by SMLP of the Cash Out Amount, WMUS
shall have no further rights under this Option Agreement or
pursuant to the Option with respect to such Excess Shares.  If SMLP
makes the election described above, WMUS shall not be required to
pay the Exercise Price in respect of the Excess Shares.

      1.5  No Rights as a Limited Partner or Stockholder.  This
Option does not entitle WMUS to any voting rights or other rights
as a limited partner of SMLP prior to an effective exercise of the
Option and the payment of the Exercise Price in respect of the
ServiceMaster Shares thereby acquired, all in accordance herewith.

      1.6  Non-Transferable. Except to an Affiliate (as defined in
Section 12.1 of the Relationship Agreement) of WMUS and subject to
compliance with all of  the provisions of Section 5.2 of the
Relationship Agreement, the Option or any other rights of WMUS
under this Option Agreement may not be transferred to any person or
entity without the prior written consent of SMLP.

<PAGE>

      1.7  Authorized ServiceMaster Shares.  SMLP covenants that
during the period in which the Option is outstanding, SMLP shall at
all times have a sufficient number of  authorized but unissued
limited partner shares to enable it to issue limited partner shares
upon each exercise of the Option.


2.    SMLP CALL RIGHT 

      2.1  If at any time after the date hereof, the Market Price
Per Share (as defined in Section 6.3(b) of the Relationship
Agreement) of the ServiceMaster Shares is greater than or equal to
$39.00 per share, subject to adjustment as provided in Section 4
hereof, (the "Call Trigger Price") for forty consecutive, New York
Stock Exchange trading days commencing on or after November 4,
1997, SMLP may request WMUS or if WMUS is not the holder of the
Option at such time, the holder of the Option, to exercise the
Option in whole (the "Option Call Notice"), by giving notice to
WMUS or such holder, which notice shall also include the Review
Materials under Section 1.4(a)(ii), at any time during the thirty
calendar day period (the "Call Period") which immediately follows
such forty NYSE trading day period.  If SMLP fails to give the
Option Call Notice prior to the expiration of such thirty calendar
day period, then SMLP shall have no further rights under this
Section 2 and the Option shall remain in full force and effect. 

      2.2  If SMLP delivers the Option Call Notice within the Call
Period to WMUS, WMUS (or such other holder) shall then have thirty
calendar days from the date of receipt by WMUS of the Option Call
Notice to exercise the Option as provided in Section 1.4.  If WMUS
or such other holder does not exercise the Option within such
thirty-day period, SMLP shall within ten business days after the
expiration of such thirty-day period purchase the Option at a price
(the "Call Price") equal to the number of ServiceMaster Shares
which are then obtainable for acquisition upon exercise of the
Option multiplied by excess of the (i) the average Market Price Per
Share of the ServiceMaster Shares during the forty NYSE trading day
period referred to in Section 2.1, over (ii) the Exercise Price. 
SMLP shall pay to WMUS or such other holder, the Call Price for the
Option by wire transfer of immediately available funds.  Upon the
closing of such sale and purchase of the Option, WMUS shall have no
further rights under this Option Agreement or with respect to the
Option.


3.    LEGEND REQUIRED

           Each certificate representing ServiceMaster Shares
obtainable upon exercise of the Option shall bear the legends as
required under Section 10 of the Relationship Agreement which
legends shall be removed as provided in Section 10 of the
Relationship Agreement. 

<PAGE>

4.    ADJUSTMENT IN SHARES AND SHARE PRICES IN CERTAIN CASES

      4.1  Effect of Distributions in ServiceMaster Shares.   If any
dividends or distributions on the ServiceMaster Shares payable in
ServiceMaster Shares are declared or issued by ServiceMaster, the
Exercise Price shall be adjusted by multiplying the Exercise Price
then in effect by a fraction, the numerator of which is the number
of ServiceMaster Shares outstanding immediately prior to such
dividend or distribution and the denominator of which is the number
of ServiceMaster Shares outstanding immediately after such dividend
or distribution.  Upon each such adjustment of the Exercise Price
hereunder, the number of ServiceMaster Shares acquirable upon
exercise of this Option shall be adjusted to the number of
ServiceMaster Shares determined by multiplying the Exercise Price
in effect immediately prior to such adjustment by the number of
ServiceMaster Shares acquirable upon exercise of this Option
immediately prior to such adjustment and dividing the product
thereof by the Exercise Price resulting from such adjustment.

      4.2  Subdivision, Combination, Reclassification of
ServiceMaster Shares.  Other than in connection with the
Reincorporating Merger, if at any time after the date hereof the
ServiceMaster Shares shall, by subdivision, combination or
reclassification or through merger or consolidation or otherwise,
change into a different number or kind or class of ServiceMaster
Shares, or into other securities, cash or other property, then at
the same time the equity interests issuable under this Option
Agreement immediately prior to such change shall be changed into
the securities, cash or other property which WMUS would have
received if WMUS had exercised the Option immediately prior to such
subdivision, combination, reclassification, merger or consolidation
or other action (or any record date applicable thereto), and SMLP
shall reserve for issuance upon exercise of the Option the same
type of and amount of securities, cash or other property which
would have been received by WMUS if it had exercised the Option
immediately prior to such subdivision, combination,
reclassification, merger or consolidation or other action (or any
record date applicable thereto).  The purpose of the foregoing
provision is to entitle WMUS to receive such securities, cash or
property for the same capital contribution to SMLP as would have
occurred if WMUS had fully exercised the Option immediately prior
to such subdivision, combination, reclassification, merger or
consolidation or other action (or any record date applicable
thereto).  

      4.3  Conversion of SMLP to a Corporation. SMLP is presently
organized as a Delaware limited partnership.  However, SMLP expects
to convert to a Delaware corporation pursuant to a merger  (the
"Reincorporating Merger") into ServiceMaster Incorporated of
Delaware ("SMI") by not later than December 31, 1997 under a Merger
and Reorganization Agreement which was approved by SMLP's limited

<PAGE>

partners on January 13, 1992 (the "Reincorporating Merger
Agreement").  SMLP and SMI hereby covenant and agree that from and
after the effective date of the Reincorporating Merger: (i) each
and every obligation of SMLP which is set forth in this Option
Agreement shall become the obligation of SMI (ii) "ServiceMaster
Shares" shall mean shares of common stock issued or issuable by SMI
pursuant to the Reincorporating Merger.  SMI, although not on the
date hereof an active company, has nonetheless executed this Option
Agreement to record its commitment to the foregoing provision.

      4.4  Substitution of Successor. If an entity other than SMLP
or SMI shall be the issuer of any securities to be held for the
benefit of WMUS pursuant to Section 4.1 or 4.2 above or 5 below,
then such entity shall be deemed to be bound by all the provisions
of this Agreement applicable to SMLP or SMI in respect of any WMUS
exercise of the Option with respect to such securities.  SMLP and
SMI shall continue to be bound if the Option shall also be
exercisable for ServiceMaster Shares or SMI Shares.  This
Section 4.4 shall apply to each entity which shall issue any
securities to be held for the benefit of WMUS pursuant to
Section 4.1 or 4.2 above or 5 below.

5.    EXTRAORDINARY DISTRIBUTIONS 

      5.1  For purposes of this Agreement, an "Extraordinary
Distribution" shall be a distribution to shareholders by SMLP of
cash, property, or rights the value of which, when added to all
other distributions to shareholders issued or paid during the same
calendar year on a per share basis, exceeds 130% of the aggregate
distributions to shareholders of cash, property or rights per share
issued or paid by SMLP for the immediately preceding calendar year.

      5.2  If on the date on which WMUS receives SMLP's
Extraordinary Distribution Notice (defined below) the Market Value
Per Share (as defined in Section 6.3(b) of the Relationship
Agreement) is less than the Exercise Price, SMLP shall reserve for
issuance upon exercise of the Option, property or rights which
would have been received by WMUS if WMUS had exercised the Option
immediately prior to such Extraordinary Distribution (or
immediately prior to any record date applicable thereto), provided
that if it is not reasonably feasible for SMLP to preserve any
property or rights for WMX, then SMLP may upon WMUS' exercise of
the Option pay the fair market value of such property or right to
WMUS in lieu of transferring such property or right to WMX.  The
purpose of the foregoing provision is to entitle WMUS to receive
the cash, property or rights comprising the Extraordinary
Distribution for the same capital contribution to SMLP as would
have occurred if WMUS had fully exercised the Option immediately
prior to the Extraordinary Distribution (or immediately prior to
any record date applicable thereto). Upon WMUS's exercise of the
Option, the cash, property or rights issued or paid in the
Extraordinary Distribution shall be issued or paid to WMUS together

<PAGE>

with the SMLP shares deliverable as a result of such Option
exercise. 

      5.3  SMLP agrees that, within five calendar days after its
Board of Directors has determined to make a distribution which
constitutes an Extraordinary Distribution, SMLP will deliver a
notice to WMUS which describes such Extraordinary Distribution (the
"Extraordinary Distribution Notice").  SMLP agrees that the date
which SMLP's board of directors establishes as the record date for
the Extraordinary Distribution shall not be earlier than the second
business day after the earliest day by which an exercise of the
Option could be closed pursuant to Section 1.4 if WMUS were to
deliver a Preliminary Exercise Notice on the fifth calendar day
after the receipt of the Extraordinary Distribution Notice.  The
foregoing sentence shall be based on the assumption that each of
SMLP and WMUS uses the maximum time allowed by Section 1.4 to take
action.

      5.4  If SMLP gives WMUS an Extraordinary Distribution Notice
during the year 1996, SMLP agrees to permit the Option to be
exercised by WMUS notwithstanding the provisions of Section 1.3
hereof.


6.    GENERAL PROVISIONS

      6.1  Amendments.  No amendment of any provision of this Option
Agreement shall be valid unless the same is in writing and signed
by WMUS, ServiceMaster and SMI.

      6.2  Waivers.  No waiver by any party of any default,
misrepresentation or breach of warranty or covenant shall be deemed
to extend to any prior or subsequent default, misrepresentation or
breach of warranty or covenant.

      6.3  Binding Effect.  This Option Agreement shall be binding
upon and shall inure to the benefit of the parties hereto and their
respective successors and assigns.  

      6.4  Notices.  Section 8.4 of the Relationship Agreement is
incorporated into this Section 6.4 by reference.

      6.5  Governing Law.  This Option Agreement shall be governed
by and construed in accordance with the laws of the State of
Delaware.

<PAGE>

      6.6  Construction.  The parties have participated jointly in
the negotiation and drafting of this Option Agreement.  In the
event an ambiguity or question of intent or interpretation arise,
this Option Agreement shall be construed as if drafted jointly by
the parties and no presumption or burden of proof shall arise which
favors or disfavors either party by virtue of the authorship of any
of the provisions of this Option Agreement.


                   *                  *                *



      IN WITNESS WHEREOF, the parties have executed this Option
Agreement the day and year first above written.


WMX TECHNOLOGIES, INC.


By:  /s/ James E. Koenig
      Its Chief Financial Officer



WMI URBAN SERVICES, INC.  


By: /s/ Dale B. Tauke    
      Its                         



SERVICEMASTER LIMITED PARTNERSHIP

By:  ServiceMaster Management Corporation
           (general partner)


      By: /s/ Ernest J. Mrozek   
           Its Sr. V.P. - C.F.O.  



SERVICEMASTER INCORPORATED OF DELAWARE


By:  /s/ Vernon T. Squires  
      Its  Vice President  





                          RELATIONSHIP AGREEMENT

      This Relationship Agreement has been made on December 31, 1995
(the "date hereof") among: WMX Technologies, Inc ("WMX"); WMI Urban
Services, Inc.  ("WMUS");  ServiceMaster Limited Partnership
(which, subject to change when and if prescribed by Part 9, is
herein called "ServiceMaster"); and ServiceMaster Incorporated of
Delaware ("ServiceMaster Incorporated").


                                Background

      A.   On the date hereof, ServiceMaster is a limited
partnership whose limited partner shares are publicly traded on the
New York Stock Exchange.

      B.   Contemporaneous with the execution of this Agreement,
WMX, WMUS and ServiceMaster have entered into a Contribution
Agreement pursuant to which among other things (i) ServiceMaster
has issued 18,107,143 ServiceMaster shares to WMUS (which represent
approximately 19% of all ServiceMaster shares outstanding after
giving effect to such issuance) and (ii) ServiceMaster has issued
to WMUS an option (the "WM Option") to acquire an additional
1,250,000 ServiceMaster shares from ServiceMaster.  The WM Option
is evidenced by an Option Agreement (the "WM Option Agreement")
among ServiceMaster, ServiceMaster Incorporated and WMUS made
contemporaneously with this Agreement.

      C.   The ServiceMaster shares and the WM Option have been
granted by ServiceMaster subject to, and in reliance upon, certain
acquisition, voting and transfer restrictions.  The parties have
entered into this Agreement to establish and confirm these
restrictions and certain other agreements between them. 



                                Agreement 

The parties hereby agree as follows:


1.    WMX Board Representation. 

      ServiceMaster and WMX declare it to be their objective that
one position (the "WMX position") on the ServiceMaster Board will
be filled with a person nominated by WMX ("WMX's representative"). 
The parties acknowledge that from the date of this agreement until
he leaves the Board, Philip B. Rooney will serve as WMX's
representative on the ServiceMaster Board.  ServiceMaster agrees
that in connection with any election of directors at which the term
of WMX's representative on the Board is scheduled to expire or the
WMX position on the Board is vacant, ServiceMaster will (i)
nominate for election to the WMX position on the Board any

<PAGE>

candidate selected by WMX and reasonably satisfactory to a majority
of the Board and (ii) solicit proxies from its shareholders in
favor of such candidate in the same manner ServiceMaster solicits
proxies for other candidates for the Board nominated in the
ordinary course at ServiceMaster (it being understood that
ServiceMaster does not expect to solicit any proxies for Board
elections until and unless ServiceMaster coverts to corporate
form).   ServiceMaster also agrees that in the event WMX's
representative shall resign from the Board or otherwise leave the
Board for any reason, ServiceMaster's chief executive officer will
request that the remaining directors fill the vacancy with a person
who is nominated by WMX and who is reasonably satisfactory to a
majority of the Board. Each person appointed or elected to the
Board as contemplated by the two preceding sentences shall
constitute WMX's representative on the Board until such person
leaves the Board.


2.    WMX Standstill Commitment.

      2.1  Basic Commitment.  Except as otherwise provided in
Section 2.8, neither WMX nor any of its affiliates shall acquire,
or offer to acquire, directly or indirectly, by purchase or
otherwise, beneficial ownership of any ServiceMaster shares if
after giving effect to such acquisition WMX would beneficially own
more than the Permitted Number of ServiceMaster shares.

      2.2  Permitted Number.  Any particular person shall be deemed
to beneficially own more than the Permitted Number of ServiceMaster
shares at any particular time if that particular person shall
beneficially own:

                 (1)   more than the Applicable Percentage of the
                       ServiceMaster partnership shares outstanding
                       at the particular time; or

                 (2)   more than the Applicable Percentage of the
                       shares of common stock issued by ServiceMaster
                       Incorporated which are outstanding at the
                       particular time; or

                 (3)   more than the Applicable Percentage of the
                       shares in any other class or series of equity
                       securities issued by ServiceMaster and
                       outstanding at the particular time; or

                 (4)   shares representing more than the Applicable
                       Percentage of the votes which could be cast in
                       any election to any position on the
                       ServiceMaster Board.

2.3   Applicable Percentage.

<PAGE>

(a)   The Applicable Percentage as applied to anyone other than WMX
      shall be 15%.

(b)   The Applicable Percentage as applied to WMX shall be 21%.

2.4   Beneficial Ownership.  

(a)   Except as otherwise provided in Section 2.4(b) or Section 2.8,
      any particular person shall be deemed to "beneficially own"
      any ServiceMaster shares:

      (1)  which that particular person or any of that particular
           person's affiliates owns directly or indirectly;

      (2)  which that particular person or any of that particular
           person's affiliates has (A) the right to acquire (whether
           such right is exercisable immediately or only after the
           passage of time and/or the occurrence of a contingency)
           pursuant to any agreement, arrangement or understanding,
           or upon the exercise of conversion rights, exchange
           rights, warrants or options, or otherwise or (B) the
           right to vote whether pursuant to any agreement,
           arrangement or understanding or otherwise; or

      (3)  which are beneficially owned, directly or indirectly, by
           any other person (or any affiliate thereof) with which
           that particular person (or any of that particular
           person's affiliates) has any agreement, arrangement or
           understanding relating to the acquisition, holding,
           voting or disposing of any ServiceMaster shares.

(b)   WMX shall not be deemed to beneficially own any ServiceMaster
      shares (herein called "ERISA Shares") (i) in which the entire
      economic interest is owned by an ERISA Plan and (ii) which
      that ERISA Plan trustees or the employees who are
      beneficiaries of that Plan have the exclusive right to vote.

(c)   The term "ERISA Plan" as used in this Agreement means:  any
      plan or program (i) established for the benefit of employees
      or former employees  of WMX or any of its affiliates and (ii)
      which is governed by the Employee Retirement Income Security
      Act of 1974 as amended  ("ERISA").

(d)   ServiceMaster has agreed to exclude ERISA Shares from the
      requirements in this Agreement which apply to WM Shares and
      the WM Option in reliance upon indications received from
      officers of WMX that such exemption is for convenience to
      avoid the need to monitor acquisitions and dispositions of
      ServiceMaster shares by WMX's ERISA Plans which such officers
      expect to be modest in amount and routine in nature.  WMX
      hereby covenants that WMX shall not use any ERISA Plan which
      is not subject to the ERISA diversification requirements to

<PAGE>

      circumvent obligations which are imposed on WMX under this
      Agreement.

      2.5  Ownership Percentage.  The percentage of the shares in
any series, class or other relevant population which are
beneficially owned by any particular person at any particular time
shall be calculated for purposes of this agreement by dividing 

           (1)   the number of shares in that series, class or other
                 population which are beneficially owned by that
                 particular person at that particular time 

                                    by

           (2)   the sum of (i) the number of shares in that series,
                 class or other population which are actually
                 outstanding at that particular time plus (ii) the
                 number of shares in that series, class or other
                 population which are beneficially owned by that
                 particular person at that particular time but which
                 are not actually outstanding at that particular
                 time.

      2.6  ServiceMaster share.  The term "ServiceMaster share" as
applied at any particular time for purposes of this Agreement
designates and includes any of the following which shall be
outstanding at that particular time:

           (1)   a partnership share issued by ServiceMaster Limited
                 Partnership (i.e., the equity security issued by
                 ServiceMaster Limited Partnership which is traded
                 on the New York Stock Exchange on the date hereof);
                 and

           (2)   a share of common stock issued or issuable by
                 ServiceMaster Incorporated; and

           (3)   a share (or other basic unit) of any other equity
                 security at any time issued or issuable by
                 ServiceMaster Limited Partnership, ServiceMaster
                 Incorporated or any other partnership, corporation
                 or entity which shall succeed to the position of
                 "ServiceMaster" for purposes of this Agreement
                 pursuant to Section 9.2.

      2.7  WM Shares.  The term "WM Shares" as applied at any
particular time for purposes of this agreement means all
ServiceMaster shares

           (1)   in which WMX, WMUS or any other affiliate of WMX
                 holds any ownership interest at the particular time
                 or 

<PAGE>

           (2)   which WMX, WMUS or any other affiliate of WMX has
                 the right to acquire (whether such right is
                 exercisable immediately or only after the passage
                 of time and/or the occurrence of a contingency)
                 pursuant to any agreement, arrangement or
                 understanding, or upon the exercise of conversion
                 rights, exchange rights, warrants or options, or
                 otherwise.

The term "WM Shares" as applied on the date hereof includes the
ServiceMaster shares cited in Background Paragraph B and the
ServiceMaster shares issuable upon exercise of the WM Option.  No
ERISA shares shall be deemed to be WM Shares for purposes of this
Agreement.

      2.8  WM Option.  For purposes of applying the commitment made
in Section 2.1 WMX shall not be deemed to beneficially own any
shares which are subject to the WM Option until and unless such
shares are actually issued.  No exercise of the WM Option shall be
deemed to violate Section 2.1 regardless of whether WMX shall
beneficially own more than the Permitted Number of ServiceMaster
shares after such exercise.  Nothing in this Agreement shall
prevent or limit the right  of WMX to exercise the WM Option to the
extent WMX is permitted to do so under the terms of the Option
Agreement pursuant to which the WM Option was granted.


3.    Takeover Commitments.

      3.1  Basic Commitments.  Unless specifically authorized in
advance in writing by the Board,  neither WMX nor any of its
affiliates shall directly or indirectly:

      (a)  attempt or carry out any Takeover;

      (b)  propose to ServiceMaster or any other Person any
           transaction between WMX and ServiceMaster, any of its
           affiliates and/or its security holders or involving any
           of its securities or security holders which would
           constitute a Takeover or which (based on information
           known to WMX) it is reasonably possible could lead to a
           Takeover, 

      (c)  endorse or propose that ServiceMaster accept any proposal
           from any other person which would result in a Takeover or
           which (based on information known to WMX) it is
           reasonably possible could lead to a Takeover, or

      (d)  enter into any discussions, negotiations, arrangements or
           understandings with or advise, assist, encourage, act in
           concert with, or otherwise support in any manner any
           other Person in connection with any activities which it

<PAGE>

           is reasonably possible could lead to a Takeover except
           that this clause (d) shall not be deemed to prohibit any
           sale of WMX shares otherwise permitted by this Agreement.

3.2   Takeover.

(a)   Except as otherwise provided in this Section 3.2, a "Takeover"
      shall be deemed to have occurred if and when:  

      (1)  any person shall become the beneficial owner of more than
           the Permitted Number of ServiceMaster shares, or

      (2)  ServiceMaster or any of its affiliates shall sell or
           purchase assets, engage in a merger or engage in any
           other transaction immediately after which more than 21%
           of ServiceMaster's outstanding shares or ServiceMaster
           shares representing 21% or more of the combined voting
           power of the then outstanding ServiceMaster shares shall
           be ultimately owned by person(s) who shall not have owned
           such shares prior to such transaction or who shall be a
           party to such transaction or an affiliate of a party to
           such transaction; or

      (3)  any other merger, sale of assets or sale of securities
           shall occur in connection with which the person who shall
           have served as chief executive officer of ServiceMaster
           prior to the time of the initiation of the actions which
           shall have led to such transaction shall cease to be the
           chief executive officer of ServiceMaster; or

      (4)  any position on ServiceMaster's Board of Directors shall
           become occupied by a person who shall not have been
           nominated or appointed by a majority of the members of
           ServiceMaster's Board of Directors prior to such
           occupation; or 

      (5)  any distribution shall be made to ServiceMaster's share-
           holders of all or a substantial part of ServiceMaster's
           net assets or ServiceMaster shall be dissolved.  

(b)   If there shall be a merger in which the entity which shall
      have constituted "ServiceMaster" prior to such merger shall
      cease to exist, then the test prescribed in clause (2) in
      Section 3.2(a) shall be applied by comparing the ownership of
      the securities issued by the entity which shall have
      constituted "ServiceMaster" prior to such merger with the
      ownership immediately after such merger of the securities of
      the entity into which ServiceMaster shall have merged or which
      shall be the ultimate parent of such entity.

<PAGE>

4.    Voting Commitments.

      4.1  WMX Voting Shares.  The term "WMX Voting Shares" as
applied as of any particular time shall mean (i) all WM Shares
which are outstanding at the particular time and (ii) all other
ServiceMaster shares which WMX or any of its affiliates has the
power to vote at the particular time.  ERISA Shares shall not be
deemed to be Voting Shares for purposes of this Agreement.

      4.2  Election Contest.  In the event there shall be a contest
for any position on the ServiceMaster Board, then all WMX Voting
Shares shall be voted for the candidate for that position nominated
by a majority of the incumbent members of the ServiceMaster Board.

      4.3  Takeover Vote.  None of the WMX Voting Shares shall be
voted in favor of any Takeover which is not approved by the
ServiceMaster Board.

      4.4  No Proxy Solicitation.  With respect to any ServiceMaster
shares, with regard to any matter, neither WMX nor any WMX
affiliate shall directly or indirectly:  (i) solicit proxies or
consents, (ii) become a "participant" in a "solicitation" (as such
terms are defined in Regulation 14A of the Exchange Act) of proxies
or consents or (iii) work in concert with, facilitate, support or
assist in any manner a third party in such third party's
solicitation of proxies or consents, except in support of
solicitations made by or on behalf of the Board.

      4.5  Removal.  

      (a)  General Partner.  None of the WMX Voting Shares shall be
           voted in favor of the removal of any ServiceMaster
           general partner unless that general partner shall be
           guilty of Gross Misconduct (as defined in the following
           paragraph).

      (b)  Director.  None of the WMX Voting Shares shall be voted
           in favor of the removal of any ServiceMaster director
           unless the director shall be guilty of Gross Misconduct. 
           A person shall not be guilty of Gross Misconduct for
           purposes of this Agreement unless either (i) such person
           shall be convicted of a criminal felony which harmed
           ServiceMaster or (ii) such person has engaged in other
           wrongdoing which a majority of the incumbent members of
           the ServiceMaster Board determine warrants removal of
           such person from the Board.


5.    Transfer Commitments.

      5.1  Transfers to Affiliates.  

<PAGE>

      (a)  Provisions Applicable to WMUS.  WMUS shall have the right
           to Transfer any of the WM Shares or the WM Option at any
           time to (i) WMX or (ii) to any affiliate of WMX provided
           that such transfer to an affiliate complies with the
           requirements of Section 5.1(b).  WMX and WMUS warrant to
           ServiceMaster that WMX has majority ownership and control
           of WMUS (as defined in Section 5.1(b)).

      (b)  Transfers to Other WMX Affiliates.  Neither any WMX Share
           nor the WM Option shall be transferred to any affiliate
           of WMX unless the following conditions are met before
           such transfer becomes effective: (i) WMX shall directly
           or indirectly hold a majority of the ownership interest
           in such affiliate and have control over such affiliate
           sufficient to cause such affiliate to abide by all
           requirements of this Agreement (herein called "majority
           ownership and control") and (ii) WMX shall cause such
           affiliate to execute and deliver to ServiceMaster a
           counterpart of this Agreement and thereby agree to be
           bound by all provisions in this Agreement which apply to
           WMX. Any WMX affiliate which shall acquire any interest
           in the WM Option and/or in any ServiceMaster shares (i)
           shall be deemed by doing so to have agreed to be bound by
           all provisions in this Agreement which apply to WMX and
           shall in fact be bound by all such provisions and (ii)
           shall be entitled to the benefits provided by this
           Agreement with respect to the shares acquired.  WMX shall
           not sell or otherwise give up majority ownership or
           control over any affiliate unless prior thereto such
           affiliate shall not own or control any ServiceMaster
           shares or the WM Option.

      (c)  Transfer to WMX Successor.  WMX shall have the right to
           Transfer the WM Shares and the WM Option as part of the
           disposition of all or substantially all of the businesses
           and assets of WMX and its subsidiaries provided that the
           corporation or other organization which shall acquire the
           WM Shares and the WM Option and its ultimate parent if
           any  (which are together called the "WMX Successor")
           shall agree to be bound by this Agreement to the same
           extent that WMX is bound by this Agreement by executing
           an agreement reasonably satisfactory to ServiceMaster. 
           Even if such an explicit agreement shall not be obtained,
           the WMX Successor shall be deemed to have agreed to be
           bound by all provisions in this Agreement applicable to
           WMX by the act of acquiring the WM Shares and/or the WM
           Option.  The WMX Successor shall also acquire all of
           WMX's rights arising under this Agreement and the WM
           Option.

      (d)  WM Option.  The WM Option shall not be Transferred to any
           person other than WMX or an affiliate over which WMX has

<PAGE>

           majority ownership and control or to a WMX Successor. 
           Neither any provision in this Agreement authorizing
           Transfer of WM Shares nor any other provision shall be
           deemed to authorize Transfer of any interest in the WM
           Option which is not authorized by the preceding sentence.

      5.2  Market Sale Restrictions.

      (a)  Basic Requirement.  WMX will limit its market sales of
           ServiceMaster Shares on any particular day to 15% of the
           average daily trading volume in ServiceMaster shares in
           the principal market where the ServiceMaster shares shall
           then be traded during the four calendar weeks ending on
           the Friday preceding that particular day.

      (b)  Market Sale.  Any Transfer of ServiceMaster shares shall
           be deemed a "market sale" if it shall occur on the New
           York Stock Exchange or in another public market provided
           that none of the following shall be deemed "market
           sales":

           (1)   sales pursuant to a demand or piggyback
                 registration under Part 7, or

           (2)   sales pursuant to Section 5.1, 5.5 or 6.8 of this
                 Agreement, or

           (3)   sales made by means of private placement, or
           (4)   sales to ServiceMaster.

      5.3  Prohibition Against Sales to 5% Owners or Raiders.  

      (a)  In no event shall any WM Shares be Transferred to any
           person if WMX or any WMX affiliate knows that the
           ultimate purchaser of the shares would be either (i) a 5%
           owner after giving effect to the purchase and any other
           purchases which the ultimate purchaser then intends to
           make or (ii) a Raider.

      (b)  WMX shall (i) advise the principal  underwriter, broker
           or other representative retained by WMX or any of its
           affiliates in connection with the particular Transfer of
           the requirement in the preceding clause (a),  (ii)
           prohibit sale of ServiceMaster shares representing more
           than 5% of all ServiceMaster shares from being sold to
           any single purchaser and (iii) instruct WMX's principal 
           underwriter, broker or other representative to use
           reasonable efforts to avoid making any sale of shares for
           which any underwriter, broker or other representative
           responsible for the sale knows the ultimate purchaser
           would be either (i) a 5% owner after giving effect to the
           purchase and any other purchases which the underwriter,

<PAGE>

           broker or other representative knows the ultimate
           purchaser then intends to make or (ii) a Raider. 

      (c)  For purposes of this agreement a person shall be deemed
           to be a "5% owner" if such person beneficially owns
           ServiceMaster shares representing 5% or more of (i) the
           shares outstanding in any class or series or (ii) the
           votes which could be cast in any election to any position
           on the ServiceMaster Board.

      (d)  Whenever it is used in this Agreement the term "Raider"
           means any person who (i) has made a public announcement
           that it is considering accomplishing or precipitating a
           Takeover, (ii) has advised WMX it is considering
           accomplishing or precipitating a Takeover, or (iii) has
           been identified in writing by ServiceMaster to WMX in
           good faith as a person who is considering accomplishing
           or precipitating a Takeover, or (iv) WMX knows is
           considering accomplishing or precipitating a Takeover.

      (e)  Any fact or development known to any underwriter, broker
           or other representative shall not be deemed known by WMX
           unless it shall have been communicated to WMX by such
           underwriter, broker or other representative or it shall
           otherwise actually be known to WMX.

      5.4  Restriction During Any Arbitrage Period.   

      (a)  Basic Commitment.  WMX shall not during any Arbitrage
           Period either Transfer any WM Shares or enter into any
           agreement obligating WMX to Transfer any WM Shares 

           (1)   except as may be permitted by Section 5.1 or
                 Section 5.5 and

           (2)   except that WMX may Transfer WM Shares during any
                 Arbitrage Period to the extent WMX is required to
                 do so (i) by any agreement made by WMX at a time
                 which did not fall within an Arbitrage Period and
                 which otherwise complies with the requirements of
                 this Agreement or (ii) by the terms of any sale
                 made by WMX outside of any Arbitrage Period and
                 which otherwise complies with the requirements of
                 this Agreement and for which the settlement day
                 falls within the Arbitrage Period.

      (b)  Arbitrage Period.  

           (1)   Except as otherwise provided in this subsection
                 (b), an  "Arbitrage Period" shall begin on a date
                 identified as the beginning of an Arbitrage Period
                 in a notice from ServiceMaster to WMX (provided
                 that if the date specified is earlier than the
                 actual delivery of such notice to WMX, then the
                 period shall begin on the date of such actual
                 delivery).

           (2)   Except as otherwise provided in this subsection
                 (b),  an  "Arbitrage Period" shall end  on a date
                 identified as the end of that Arbitrage Period in a
                 notice from ServiceMaster to WMX.

           (3)   ServiceMaster shall not initiate an Arbitrage
                 Period unless it reasonably concludes in good faith
                 that there is Significant Arbitrage Risk.  For
                 purposes of this Agreement, Significant Arbitrage
                 Risk shall be deemed to exist when the filing of a
                 13D Statement or any other development has occurred
                 that creates a reasonable concern that if WMX were
                 to sell the number of shares it desires to sell at
                 that time a significant component of the activity
                 in ServiceMaster shares during the period such
                 sales could occur could be attributable to
                 purchases by persons  (herein called
                 "arbitrageurs") based on speculation that a
                 Takeover could occur or by any Raider or by persons
                 working in concert with a Raider or any such
                 arbitrageurs.

           (4)   If WMX shall so request, ServiceMaster shall
                 request its principal investment banker to provide
                 at ServiceMaster's expense an opinion as to whether
                 Significant Arbitrage Risk exists (utilizing such
                 format as such banker shall deem customary or
                 appropriate for its advice concerning such subject
                 matter).  If within seven business days after
                 actual delivery of WMX's request to ServiceMaster, 
                 ServiceMaster does not actually deliver to WMX such
                 an opinion from ServiceMaster's investment banker
                 that a Significant Arbitrage Risk then exists, the
                 Arbitrage Period shall end on that seventh business
                 day.
           (5)   In no event shall ServiceMaster have the right to
                 classify more than 180 days in any consecutive 720
                 day period as part of an Arbitrage Period.  Any
                 Arbitrage Period otherwise imposed by this
                 Agreement shall end whenever necessary to comply
                 with the requirement in the preceding sentence.

      5.5  Approved Takeover.  In the event the ServiceMaster Board
shall approve any Takeover offer or proposal, nothing in this Part
5 or in this Agreement shall prevent WMX from selling any WM Shares
to the person making such offer or proposal pursuant to the terms
of such offer or proposal so approved by the ServiceMaster Board.

<PAGE>

      5.6  Securities Law Compliance.  WMX acknowledges that its
position on the ServiceMaster Board and/or its rights to obtain
information under the New Relationship Agreements will from time to
time mean that WMX has information (herein called "Inside
Information") which has not been publicly disclosed and which under
requirements imposed under the federal securities laws (the
"federal insider information requirements") must be disclosed
before WMX can sell or dispose of ServiceMaster shares.  WMX agrees
that all its Transfers of ServiceMaster shares will be made in
compliance with the federal inside information requirements. Except
as otherwise provided in Section 7.6, nothing in this Agreement
shall be deemed to obligate ServiceMaster to disclose Inside
Information earlier than ServiceMaster otherwise deems appropriate. 
Nothing in this Agreement shall be deemed to authorize WMX to
disclose any Inside Information without ServiceMaster's consent. 
WMX shall comply with the Securities Laws in connection with each
Transfer of WM Shares. In addition, in connection with any Transfer
of WM Shares other than pursuant to a registration statement under
the Securities Act of 1933, WMX shall as a precondition to such
Transfer provide ServiceMaster with (i) such evidence as
ServiceMaster shall reasonably request that such Transfer will not
violate any applicable Securities Laws and (ii) if requested by
ServiceMaster in writing  a warranty by WMX that such Transfer will
not violate any requirements of this Agreement imposed on WMX.


6.    ServiceMaster's First Refusal Right

      6.1  Basic Commitment.  Before making any Transfer of any of
WM shares, WMX shall afford ServiceMaster the opportunity to
purchase those shares in accordance with the terms of this Part 6.

      6.2  First Refusal Notice. 

      (a)  Before making any disposition of any WM Shares, WMX shall
           actually deliver to ServiceMaster a notice (a "First
           Refusal Notice") specifying the number of WM Shares of
           which WMX intends to dispose (herein called the
           "Available Shares") within the Free Disposition Period
           (determined as specified in Section 6.6) and any 2% owner
           then known to WMX to which WMX intends to seek to sell
           any of the Available Shares.  The date upon which WMX's
           First Refusal Notice shall actually be delivered to
           ServiceMaster is herein called the "First Refusal Notice
           Date" for that Notice. WMX shall limit the number of
           shares specified in any First Refusal Notice to the
           number of shares which WMX in good faith contemplates
           Transferring during the Free Disposition Period which may
           arise under Section 6.6 by reason of such Notice. 

      (b)  WMX will also promptly provide ServiceMaster with such
           other information which ServiceMaster shall reasonably

<PAGE>

           request concerning the proposed Transfer which is known
           or reasonably available to WMX.  ServiceMaster shall
           reimburse WMX for all expenses which WMX may reasonably
           incur to provide information requested by ServiceMaster
           pursuant to the preceding sentence.  In no event shall
           any delay or failure by WMX in providing information
           requested by ServiceMaster under this paragraph (b) have
           the effect of delaying the onset of the time at which WMX
           shall be entitled to sell the Available Shares or
           excusing ServiceMaster from any obligation imposed on it
           hereunder.

      (c)  For purposes of this agreement a person shall be deemed
           to be a "2% owner" if such person beneficially owns
           ServiceMaster shares representing 2% or more of (i) the
           shares outstanding in any class or series or (ii) the
           votes which could be cast in any election to any position
           on the ServiceMaster Board.

      6.3  ServiceMaster's Purchase Right.  

      (a)  ServiceMaster shall have the right (the "First Refusal
           Right") to purchase any WM Share which WMX desires to
           Transfer.  ServiceMaster shall pay a purchase price (the
           "First Refusal Price") for each share purchased by
           ServiceMaster upon exercise of its First Refusal Right in
           the amount of the Market Price per Share for
           ServiceMaster shares on the business day  preceding the
           First Refusal Notice Date.

      (b)  The term "Market Price Per Share" on any particular day
           means the closing price per share for ServiceMaster
           shares on that day on the New York Stock Exchange
           provided that (i)  if the New York Stock Exchange shall
           not then represent the principal market in which
           ServiceMaster shares are traded, the closing price shall
           be taken from that principal market and (ii) if the
           principal market shall not be open on that particular
           day, the Market Price Per Share on that particular day
           shall be the closing market price per share in that
           principal market on the first day preceding the
           particular day on which that principal market shall have
           been open.

      6.4  Review Period.  

      (a)  ServiceMaster shall be entitled to utilize a Review
           Period after receipt of any First Refusal Notice within
           which to determine whether or not to exercise the First
           Refusal Right arising with respect to the shares covered
           by that Notice.  The Review Period shall begin on the
           First Refusal Notice Date and shall end upon the earliest

<PAGE>

           of the end of the Available Review Interval, the date on
           which ServiceMaster notifies WMX that ServiceMaster has
           elected not to exercise that particular First Refusal
           Right, or the date upon which ServiceMaster notifies WMX
           that ServiceMaster has elected to exercise that
           particular First Refusal Right. 

      (b)  The "Available Review Interval" available after actual
           delivery of any particular First Refusal Notice to
           ServiceMaster shall be a period beginning on the First
           Refusal Notice Date for that particular Notice (the
           "relevant First Refusal Notice Date") and ending on
           whichever of the following dates applies:

           (1)   The Available Review Interval shall end on the
                 second full business day which shall occur after
                 the relevant First Refusal Notice Date if the sum
                 of the amount  ServiceMaster shall have committed
                 during the 100 days immediately preceding the First
                 Refusal Notice Date to pay to purchase
                 ServiceMaster shares from WMX plus the amount which
                 ServiceMaster would be required to pay to purchase
                 all Available Shares covered by the triggering
                 First Refusal Notice would not exceed $2 million.

           (2)   The Available Review Interval shall end on the
                 fourth full business day which shall occur after
                 the relevant First Refusal Notice Date if the
                 preceding test (1) does not apply and if
                 ServiceMaster's purchase of all the  Available
                 Shares specified in the triggering First Refusal
                 Notice would not exceed the $5 Million Limit.   For
                 purposes of this Agreement, any particular purchase
                 of Available shares shall be deemed to exceed the
                 "$5 Million Limit" if $5 million shall be less than
                 the sum of (i) the amount ServiceMaster would be
                 required to pay to purchase all of the Available
                 Shares covered by the triggering First Refusal
                 Notice plus (ii) the amount ServiceMaster shall
                 have committed during the 100 days immediately
                 preceding the First Refusal Notice Date to pay to
                 purchase ServiceMaster shares from WMX.

           (3)   The Available Review Interval shall end on the 20th
                 full business day which shall occur after the
                 relevant First Refusal Notice Date if
                 ServiceMaster's purchase of all the Available
                 Shares specified in the triggering First Refusal
                 Notice would exceed the $5 Million Limit.

      (c)  WMX shall not enter into any agreement obligating it to
           Transfer any Available Shares prior to the earlier of 

<PAGE>

           (i) the end of the Review Period or (ii) the sixth
           business day following the First Refusal Notice Date
           provided that any such agreement made during any portion
           of the Review Period which occurs on or after the sixth
           business day following the First Refusal Notice Date
           shall be subject to cancellation to the extent necessary
           to accommodate exercise of ServiceMaster's rights under
           this Part 6.

      6.5  ServiceMaster Exercise Of the First Refusal Right.

      (a)  ServiceMaster shall be deemed to have exercised any
           particular First Refusal Right which may become available
           to ServiceMaster  under this Part 6 if prior to the end 
           of the Review Period associated with that particular
           Right, ServiceMaster shall actually deliver to WMX a
           notice (herein called an "Exercise Notice") (i) stating
           that ServiceMaster has elected to exercise its First
           Refusal Right, (ii) stating the number of the Available
           Shares which ServiceMaster has elected to purchase
           (provided that ServiceMaster shall be obligated to
           purchase all Available Shares if any are purchased if
           such purchase would not exceed the $5 Million Limit) and
           (iii) specifying the closing date for the sale (which
           without the consent of WMX shall not be less than three
           business days after the date on such which notice shall
           be so delivered (the "Exercise Date") nor more than a
           number of days after the Exercise Date equal in length
           (beginning on the Exercise Date) to the length of the
           Available Review Interval relating to that particular
           First Refusal Right).  Upon exercise of its First Refusal
           Right, ServiceMaster shall become contractually obligated
           to purchase the Available Shares with respect to which
           the Right is exercised on the terms prescribed in this
           Agreement and WMX shall become contractually obligated to
           sell those Shares to ServiceMaster on the terms
           prescribed by this Agreement.

      (b)  On the closing date so established: 

           (1)   ServiceMaster shall make payment to WMX in
                 immediately available funds of the purchase price
                 for the shares being purchased by ServiceMaster by
                 reason of such exercise of its First Refusal Right
                 and

           (2)   WMX shall deliver to ServiceMaster a certificate or
                 certificates representing the shares being
                 purchased by ServiceMaster bearing endorsements
                 and/or accompanied by instruments sufficient to
                 convey to ServiceMaster effective as of the closing

<PAGE>

                 date ownership of those shares free from any
                 adverse interest.

      (c)  ServiceMaster shall also be entitled to receive any
           distribution, dividend or other right associated with the
           shares purchased, the record date for which shall have
           occurred on or after the Exercise Date.

      6.6  WMX Sale of Free Shares.

      (a)  Identification of Free Shares.  Except as otherwise
           provided in Section 6.6(c):

           (1)   If ServiceMaster shall deliver a notice to WMX
                 specifying that ServiceMaster has elected not to
                 exercise its First Refusal Right arising in
                 connection with any particular First Refusal Notice
                 provided by WMX or if ServiceMaster shall fail to
                 deliver an Exercise Notice within the Available
                 Review Interval after receipt of that First Refusal
                 Notice, then all Available Shares identified in
                 that Notice shall become Free Shares at the end of
                 the relevant Review Period.

           (2)   If during the applicable Review Period,
                 ServiceMaster shall deliver an Exercise Notice to
                 WMX specifying that ServiceMaster has exercised its
                 right to purchase some but less than all the
                 Available Shares specified in any particular First
                 Refusal Notice, then the Available Shares in excess
                 of those which ServiceMaster has elected to
                 purchase in accordance with this Agreement shall
                 upon delivery of that Exercise Notice become Free
                 Shares.  ServiceMaster in such a case shall have
                 the right to specify the purchaser or purchasers
                 proposed by WMX which ServiceMaster intends to
                 replace by exercise of its First Refusal Right, and
                 if ServiceMaster does so, the shares purchased by
                 ServiceMaster shall be eliminated from the
                 allocation of shares which would otherwise have
                 been made to the purchaser(s) for which
                 ServiceMaster is substituting itself.

      (b)  Disposition of Free Shares.  During the period (the "Free
           Disposition Period") of 100 days following the end of the
           Review Period applicable to any First Refusal Notice, WMX
           shall be entitled to sell or dispose of any Free Shares
           covered by that Notice in any manner which is not
           prohibited by any provision in this Agreement outside of
           this Part 6,  provided that if the disposition shall be
           made by means of a registration under the Securities Act
           of 1933, the Free Disposition Period shall begin when the

<PAGE>

           registration statement shall become effective and shall
           end 100 days later.

      (c)  Reversion Shares.  In the event WMX shall not consummate
           the sale or other  disposition of any Free Shares during
           the Free Disposition Period, then at the end of the Free
           Disposition Period, such shares shall cease to be Free
           Shares and WMX shall be required to comply with the
           requirements of this Part 6 again with respect to such
           shares in the event WMX desires to make any subsequent
           disposition of those shares.

      6.7  Exemption for Transfers to WMX affiliates.

      (a)  ServiceMaster's Right of First Refusal shall not apply to
           any transfer WMX shall make to any of its affiliates,
           provided that each of WMX's affiliates must comply with
           the provisions of this Part 6 before disposing of any
           ServiceMaster shares to any person who is not a WMX
           affiliate.

      (b)  The dispositions by WMX, all WMX affiliates, and all WMX
           Buyers shall be aggregated for purposes of Section
           6.4(b).  The term "WMX" as applied in Sections 6.1 and
           6.4(b) shall be applied to mean WMX, all WMX affiliates,
           and all WMX Buyers.

      6.8  Control Change Call.

      (a)  Basic Call Right.  

           (1)   In the event any WMX Control Change shall occur,
                 then ServiceMaster shall have the option (the
                 "Control Change Call") to purchase on the terms
                 prescribed in this Section 6.8 both  the WM Option
                 and the WM Shares.  A partial exercises of the
                 Control Change Call is not permitted.

           (2)   For purposes of this Agreement a "WMX Control
                 Change" shall be deemed to have occurred if any
                 development shall occur with respect to WMX which
                 would constitute a Control Change under the
                 standards prescribed in Section 11.3 (applying
                 Section 11.3 as if it referred to WMX rather than
                 ServiceMaster).

           (3)   The "Change Date" shall be the date upon which the
                 WMX Control Change shall occur.

      (b)  Call Price.

<PAGE>

           (1)   Call Shares.  The purchase price for each of the
                 Call Shares shall be the Market Value Per Share on
                 the Change Date (the "Call Price").  

           (2)   WM Option.  The purchase price for the WM Option
                 shall be determined by multiplying the number of
                 shares subject to the WM Option on the Change Date
                 times the amount by which the Call Price shall
                 exceed the exercise price per share of the WM
                 Option on the Change Date, provided that in the
                 event the Call Price does not exceed the exercise
                 price per share of the WM Option, then the purchase
                 price for the WM Option shall be determined by
                 applying the Black Scholes option pricing model to
                 value the remaining term of the option.

      (c)  Call Exercise Period.  WMX shall give ServiceMaster
           written notice that a WMX Control Change has occurred
           promptly after such occurrence.  ServiceMaster shall have
           the right to exercise its Control Change Call at any time
           during the period (the "Call Exercise Period") beginning
           on the Change Date and ending on the 30th business day
           after actual delivery to ServiceMaster of the WMX notice
           contemplated by the preceding sentence.  

      (d)  Exercise.  ServiceMaster shall be deemed to have
           exercised the Control Change Call if and when during the
           Call Exercise Period ServiceMaster shall actually deliver
           notice of such exercise to WMX.

      (e)  Closing.  If ServiceMaster exercises its Control Change
           Call, ServiceMaster shall have 90 business days after the
           Call Exercise Period in which to close the transaction. 
           The closing shall occur on the date set forth in a notice
           from ServiceMaster to WMX, provided that such date shall
           not be later than the 90th business day after the end of
           the Call Exercise Period. At the closing:

                 (A)   ServiceMaster shall pay WMX the purchase price
                       for the Call Shares and the WM Option in
                       immediately available funds.

                 (B)   WMX shall deliver to ServiceMaster the
                       certificates representing the Call Shares plus
                       such transfer instruments as shall be
                       sufficient to convey the Call Shares and the
                       WM Option to ServiceMaster free of any adverse
                       interest of any kind.

      (f)  Expiration.  The Control Change Call shall expire and
           shall not be exercisable unless ServiceMaster shall
           actually deliver to WMX prior to the end of the Call

<PAGE>

           Exercise Period the notice prescribed by Section 6.8(d). 
           If the Closing Call Right shall ever expire unexercised,
           then the Closing Call Right may never be exercised
           thereafter regardless of whether or not any subsequent
           WMX Control Change shall occur.

      6.9  Stock Split Adjustment.  If during any period operative
under this Part 6 there shall occur any stock split or other
occurrence which would be effective to cause an adjustment under
part 4 of the WM Option Agreement, then the nature and number of
shares and the prices applicable under this part 6 shall be
adjusted in accordance with the concepts underlying part 4 of the
WM Option Agreement.

      
7.    Commitment to Register ServiceMaster shares.

      7.1  Demand Registration Right. 

      (a)  Basic Right.  From and after January 1, 1998 and subject
           to the provisions of this Part 7, WMX shall be entitled
           to require ServiceMaster to register under the Securities
           Act and state securities laws in accordance with the
           provisions of this Part 7 Original Shares beneficially
           owned by WMX.    

      (b)  Demand Registration.  The term "demand registration"
           means any registration to which WMX shall be entitled
           under this Part 7 which is not a Piggyback Registration
           (as defined in Section 7.8).

      (c)  Original Shares.  The term "Original Shares" as used in
           this Part 7 is limited to the following shares: (i) the
           18,107,143 ServiceMaster Shares received by WMX on the
           date hereof under the Contribution Agreement between
           ServiceMaster and WMX; (ii) all shares which shall be
           issued upon exercise of the WM Option; (iii) all
           ServiceMaster shares which shall be acquired by WMX in
           compliance with this Agreement prior to the first to
           occur of a sale of shares pursuant to a registration
           under this Part 7 or sales by WMX after the date hereof
           aggregating more than 2% of the outstanding ServiceMaster
           shares; (iv) other ServiceMaster shares acquired by WMX
           which ServiceMaster in its sole discretion shall agree in
           writing to count as Original Shares for purposes of this
           Agreement; and (v) all shares which may be issued with
           respect to any Original Shares in the Reincorporating
           Merger or in any other merger or reorganization or in
           connection with any stock split or stock dividend or in
           any distribution of equity securities to the holders of
           Original Shares or in connection with any other action
           having a similar substantive effect.  Although the

<PAGE>

           remainder of this Part 7 refers generally to
           "ServiceMaster shares" in no event shall such provisions
           be deemed to obligate ServiceMaster to register any
           shares which are not Original Shares.

      7.2  Registration Request.  ServiceMaster shall not be
required to initiate a registration under this Part 7 unless
ServiceMaster shall have received a written request from WMX: 

      (a)  affirming that WMX desires to sell Original shares to the
           public; 

      (b)  affirming that in the opinion of their counsel, the
           proposed sale would require registration of Original
           shares to be sold under the Securities Act and/or
           qualification of such Original shares under any
           applicable state securities or blue sky laws in any
           jurisdiction in which the WMX desires to make such sale; 

      (c)  requesting that ServiceMaster undertake a registration of
           Original shares under this Section 7.2; 

      (d)  identifying the number of Original shares to be included
           in such registration (provided, that WMX may later
           increase or decrease such number to the extent not
           prohibited by this Agreement or the Securities Laws); and

      (e)  describing the method by which WMX proposes to sell such
           Original shares (provided, that WMX may later change such
           method).  

In the event WMX proposes to sell such Original shares pursuant to
an underwritten offering or through an exclusive broker or brokers,
ServiceMaster shall have the right to select one of the managing
underwriters (the managing underwriters that shall "run the books")
for such offering or such exclusive broker(s), provided that such
managing underwriter or exclusive broker(s) shall be reasonably
acceptable to WMX and that, if managing underwriters are used, WMX
shall have the right to select the other managing underwriter
(provided that such managing underwriter shall be reasonably
acceptable to ServiceMaster).

      7.3  Registration.  ServiceMaster shall use reasonable efforts
to promptly register under the Securities Act and any applicable
state securities or blue sky laws all Original Shares which it
shall have been requested to register in a request received in
compliance with the requirements specified in Section 7.2 above
plus such number of additional Original Shares as WMX may request,
provided that: (i) WMX shall not have the right to change the
number of shares registered after the registration statement
becomes effective:  (ii) ServiceMaster shall not be obligated to
begin work on the registration until after the Review Period

<PAGE>

arising under part 6 in connection with the registration request;
and (iii) if ServiceMaster shall exercise its Refusal Right with
respect to all shares covered by such request, then (A)
ServiceMaster shall not be obligated to undertake that registration
and (B) WMX shall be deemed to have used up one of the demand
registrations to which it is entitled under this Agreement. The
registration shall be on such available form as ServiceMaster
chooses, including, if available, Form S-3 or such other form as
may have replaced it under the Securities Act.  ServiceMaster may
(but shall not be required to) include in such registration any
ServiceMaster Shares, any other owner(s) of which shall request
inclusion, provided, that if ServiceMaster does so the registration
shall be deemed not to have been requested by WMX and WMX shall
have the right to make another request under Section 7.2 and such
registration shall be deemed to convert to a "piggyback"
registration pursuant to Section 7.8.  All ServiceMaster Shares
which ServiceMaster shall be required or elect to include in a
registration (whether made as contemplated in this Section 7.3, as
contemplated in Section 7.8 or otherwise) are herein called the
"Registered Shares" for that registration.

      7.4  Registration Expenses.  ServiceMaster shall bear the
following costs and expenses of any demand registration
ServiceMaster shall be required to make under this Part 7: 

      (a)  the fees and disbursements of outside attorneys
           representing ServiceMaster, 

      (b)  the fees and disbursements of ServiceMaster's independent
           public accountants, 

      (c)  the fees and disbursements of any other Person retained
           by ServiceMaster; and 

      (d)  all internal costs and expenses of ServiceMaster
           (including, without limitation, all salaries and expenses
           of its officers and employees performing legal or
           accounting duties).  

All other expenses of any such demand registration and offering
shall be borne by WMX including, without limitation, all
registration and filing fees (including all expenses incident to
filing with the National Association of Securities Dealers, Inc.)
relating to WMX's Registered Shares, all fees and expenses for
listing WMX's Registered Shares on each securities exchange on
which ServiceMaster Shares are then listed or on the NASD automated
quotation system, fees for and expenses of complying with state
securities and blue sky laws, printing expenses, fees and
disbursements of WMX's attorneys and any other Persons retained by
WMX, and underwriting commissions attributable to WMX's Registered
Shares.

<PAGE>

      7.5  Demand Registration Limits.

      (a)  Limitation on Number of Demand Registrations. 
           ServiceMaster shall not be obligated to make more than
           four successful demand registrations of Original Shares
           under or by reason of this Part 7.

      (b)  Minimum Share Requirement.  Each demand registration
           request made by WMX under this Part 7 shall be for not
           less than 5 million shares nor more than 10 million
           shares, except that WMX shall be entitled to include all
           of its WM Shares in the last demand registration to which
           it is entitled even if less than 5 million shares.  The
           limitations prescribed in this paragraph (a) shall be
           appropriately adjusted for stock splits, stock dividends
           and other occurrences having analogous substantive
           effect.

      (c)  Successful Registration.  Any demand registration made in
           response to a request for registration by WMX shall count
           as a successful registration except that a registration
           shall not be deemed successful unless at least ninety
           percent (90%) of the Original Shares which remain
           registered during the entire period such registration
           shall be effective and which are offered for sale in good
           faith pursuant to the appropriate registration statement
           shall be sold during the period for which the
           registration statement shall be effective.  If WMX elects
           not to go forward with a demand registration, the
           registration shall nevertheless be deemed "successful" if
           either (i) it shall have become effective before the
           withdrawal decision by WMX or (ii) WMX does not reimburse
           the Parent Company for all expenses incurred and paid by
           the ServiceMaster to third parties other than employees
           in connection with the registration within fifty (50)
           days after the ServiceMaster shall deliver to WMX an
           itemized invoice of such expenses.

      7.6  Materially Disruptive Disclosures.  ServiceMaster shall
not be required to file and cause to become effective any
registration requested by WMX pursuant to this Part 7 if, in
ServiceMaster's reasonable judgment, the registration and offering
process, including any disclosures required in or pursuant to such
registration, may be materially disruptive of or detrimental to
ServiceMaster's business or the business of any ServiceMaster
affiliate or to any pending or prospective transaction including,
but not limited to, a financing, acquisition or merger or other
corporate reorganization to which ServiceMaster or any of its
affiliates is or may become a party.  ServiceMaster shall send a
written notice to WMX as promptly as practicable after
ServiceMaster has knowledge of facts or circumstances that
ServiceMaster reasonably believes would cause the registration and

<PAGE>

offering process to be materially disruptive of or detrimental to
ServiceMaster's business or any pending or prospective transaction. 
Such notice shall state that ServiceMaster is declining to file the
registration because of the reason stated in the first sentence of
this Section.  After giving such notice, ServiceMaster shall use
reasonable efforts and proceed in good faith to resolve as quickly
as reasonably practicable the issue that causes the registration
and offering process to be materially disruptive of or detrimental
to the business of  ServiceMaster and/or any of its affiliates or
a pending or prospective transaction.  In any event, ServiceMaster
shall not decline to file and cause to become effective any
particular registration requested by WMX pursuant to this Section
7.6 for any such reason for one or more periods together
aggregating in excess of thirty (30) days.  Such period or periods
shall be computed beginning on the day that ServiceMaster gives
written notice to WMX that ServiceMaster is relying on such reason
and ending on the day that WMX receives written notice that
ServiceMaster is no longer relying on such reason; provided,
however, that in no event shall such period or periods exceed
thirty (30) days.
      
      7.7  120 Day Gap.  If ServiceMaster shall give WMX a notice of
the intention of ServiceMaster to register any ServiceMaster
Shares, then so long as ServiceMaster shall pursue such
registration in good faith, WMX shall not be entitled to require
ServiceMaster to file a demand registration statement under this
Part 7 during the period beginning when such notice shall be given
and ending 120 days after the effective date of such registration.

      7.8  Piggyback Registration.  If ServiceMaster makes any
Piggyback Registration of ServiceMaster Shares under the Securities
Act, WMX shall be entitled to include its Original Shares in such
registration and to sell ServiceMaster Shares so included to the
extent permitted by this Part 7. The foregoing piggyback
registration right is subject to the following terms and
conditions:

      (a)  Piggyback Registration.  The term "Piggyback
           Registration" means a registration by ServiceMaster under
           the Securities Act other than (i) a registration made in
           connection with a merger, purchase of assets or other
           similar transaction by ServiceMaster (other than an
           offering of securities for cash); (ii) a registration of
           ServiceMaster Shares at least 80% of which are offered to
           employees or partners of ServiceMaster or of any of its
           affiliates under any compensation arrangement, including
           a ServiceMaster Share option plan or a ServiceMaster
           Share purchase plan; (iii) a registration in which the
           majority of the proceeds will be derived from the sale of
           debt securities whether or not convertible into
           ServiceMaster Shares (and for this purpose consideration
           for a security representing a right to acquire

<PAGE>

           ServiceMaster Shares shall be deemed to have been paid
           for such security rather than for those ServiceMaster
           Shares); (iv) a registration on a form which does not
           permit the inclusion of ServiceMaster Shares; and (v) a
           registration undertaken at the demand of WMX pursuant to
           Section 7.2.

      (b)  Primary Shares.  The term "Primary Share" when used with
           respect to any Piggyback Registration means (i) all
           ServiceMaster Shares which ServiceMaster desires to sell
           in such registration and (ii) all ServiceMaster Shares to
           be included in such registration  pursuant to any
           agreements made by ServiceMaster with the approval of one
           or more of its General Partners or by its Board of
           Directors (as the case may be) which entitles the holders
           of such ServiceMaster Shares to require ServiceMaster to
           file a registration statement with respect to such
           ServiceMaster Shares.

      (c)  Primary Seller.  The term "Primary Seller" when applied
           with respect to any Piggyback Registration means
           ServiceMaster, provided that if the Piggyback
           Registration shall be undertaken by reason of other
           rights granted by ServiceMaster with the approval of one
           or more General Partners thereof or by its Board of
           Directors (as the case may be) entitling any holder of
           ServiceMaster Shares to require such registration, then
           such holder shall be deemed a "Primary Seller" for
           purposes of such registration.

      (d)  Registration Notice.  If ServiceMaster proposes to make
           a Piggyback Registration, ServiceMaster shall promptly
           give written notice (herein called an "Piggyback
           Registration Notice") to WMX stating that ServiceMaster
           intends to effect such registration and specifying a date
           (herein called the "Participation Deadline") by which
           WMX's election to participate ("Participation Election")
           in the Piggyback Registration must be submitted to
           ServiceMaster (which date shall not be less than thirty
           (30) days after ServiceMaster gives the Piggyback
           Registration Notice).  The Piggyback Registration Notice
           shall be given by ServiceMaster at least thirty (30) days
           prior to the filing of the registration statement with
           the Securities and Exchange Commission.  WMX shall,
           subject to the conditions and terms set forth in this
           Section 7.8, have the right to require ServiceMaster to
           include in the proposed Piggyback Registration any or all
           of its ServiceMaster Shares.  If WMX desires to have any
           or all of its Original Shares included in the proposed
           Piggyback Registration, WMX shall promptly give
           ServiceMaster its Participation Election specifying in
           writing the number of Original Shares which WMX desires

<PAGE>

           to have included in such registration, and WMX shall have
           the right to decrease such number at any time.  WMX shall
           also have the right to increase such number of
           ServiceMaster Shares which WMX desires to have registered
           at any time, provided that (i) if WMX and ServiceMaster
           are the only two Persons whose ServiceMaster Shares are
           included in the registration, then the maximum number of
           Original Shares that shall be included in the
           registration shall be determined in accordance with the
           rationing provisions of sub-paragraph (f) and (ii) if
           ServiceMaster Shares owned by other Persons are included
           in such registration, Original Shares that are in excess
           of the number of Original Shares specified in the
           Participation Election shall be included in the
           registration only if it is unnecessary to apply the
           rationing provisions of sub-paragraph (f).  The term
           "Secondary Shares" when applied with respect to any
           Piggyback Registration means (i) all Original Shares
           which WMX shall request in its Participation Election to
           be included in a proposed Piggyback Registration prior to
           the Participation Deadline or such later date on which
           ServiceMaster in its sole discretion shall elect to
           accept such request and (ii) all other ServiceMaster
           Shares the owners of which shall be entitled to include
           in such registration pursuant to rights granted by
           ServiceMaster with the consent of its general partner or
           general partners or its board of directors (as the case
           may be) on essentially the same terms granted to WMX in
           this sub-paragraph (d), and (iii) all shares which are
           proposed to be sold by ServiceMaster officers and
           directors.  The term "Secondary Sellers" when applied
           with respect to any Piggyback Registration means the
           owners of the Secondary Shares involved in such
           registration.

      (e)  Distribution Arrangement.  All decisions and actions with
           respect to a Piggyback Registration shall be entirely in
           the discretion of the Primary Seller, including but not
           limited to whether and when the offering is to be made
           pursuant to the registration; the selling price of the
           securities; the selection of the underwriters (provided
           that WMX shall be entitled to be consulted in this
           regard); arrangements with the underwriters and any
           changes in such arrangements; the postponement or
           withdrawal of any such offering; and the contents of the
           registration statement and the prospectus.  If the
           Primary Seller shall make arrangements to sell such
           Seller's ServiceMaster Shares included in a Piggyback
           Registration to or through professional investment
           bankers, then such investment bankers shall be deemed the
           "Primary Underwriter" for such registration and WMX shall
           not be entitled to include any ServiceMaster Shares in

<PAGE>

           such registration unless (i) WMX shall agree to sell such
           ServiceMaster Shares under arrangements essentially
           similar to the arrangements for the sale of the Primary
           Seller's ServiceMaster Shares or such other arrangements
           as shall be satisfactory to WMX and the Primary Seller
           and (ii) WMX shall supply all information, execute all
           underwriting agreements and other documents, and take all
           other actions which shall be reasonably required under
           the arrangements specified in clause (i), provided that
           WMX shall not be required to pay any expenses except as
           provided in sub-paragraph (g). WMX shall not be entitled
           to include a class of ServiceMaster Shares in a
           registration which is not being sold by the Primary
           Seller if the Primary Underwriter concludes that
           inclusion of ServiceMaster Shares from a class not being
           sold by the Primary Seller would materially complicate or
           could materially delay the distribution (unless other
           Secondary Sellers are being allowed to include
           ServiceMaster Shares of such class).

      (f)  Rationing.  If the Primary Underwriter determines in good
           faith that inclusion of all of the Secondary Shares which
           the Secondary Sellers desire to include in a Piggyback
           Registration would create a significant risk that either
           the quantity of securities that the Primary Seller could
           otherwise sell or that the price per Share of such
           securities to be received by the Primary Seller would be
           reduced, then (i) the Secondary Sellers shall be entitled
           to include in such registration the largest number of
           Secondary Shares which the Primary Underwriter determines
           will not create such a risk (herein called the "Piggyback
           Total"), (ii) the maximum number of Secondary Shares
           which any given Secondary Seller shall be entitled to
           include in the registration shall be determined by
           multiplying the Piggyback Total times a fraction the
           numerator of which is the number of Secondary Shares
           which such Secondary Seller desires to include in such
           registration and which are not excluded by any of the
           preceding provisions of this Section 7.8 and the
           denominator of which is the number of Secondary Shares
           which all Secondary Sellers desire to include in such
           registration and which are not excluded pursuant to any
           of the preceding provisions of this Section 7.8. 
           Notwithstanding the foregoing sentence, WMX shall be
           entitled to include in the registration a minimum number
           of ServiceMaster Shares equal to 20% of the sum of the
           Piggyback Total plus the number of Primary Shares.

      (g)  Expenses.  WMX shall not be responsible for any expenses
           of any registration required pursuant to this Section
           7.8, except that WMX shall pay underwriting commissions
           attributable to its Secondary Shares included in such

<PAGE>

           registration and fees and disbursements of counsel or any
           other adviser that it may retain.

      (h)  Withdrawal Right.  ServiceMaster and any other Primary
           Seller shall have the right in their sole discretion to
           abandon any registration or offering proposed pursuant to
           this Section 7.8 at any time before such offering is
           consummated and shall not have any liability to WMX by
           reason of any such abandonment.  ServiceMaster shall give
           WMX written notice of its intention to abandon the
           proposed registration and offering and WMX may, upon
           notice to ServiceMaster given within five (5) days after
           the receipt of such notice from ServiceMaster, elect to
           cause the registration or offering to proceed as to any
           or all Original Shares as if such registration or
           offering were pursuant to Section 7.2 hereof, except that
           the expenses to be borne by WMX with respect to such
           registration or offering shall be only those relating to
           the period following WMX's giving such notice.  WMX may
           in its sole discretion withdraw any or all Original
           Shares from any registration or offering proposed
           pursuant to this Section 7.8 at any time before such
           offering is consummated and WMX shall not have any
           liability to ServiceMaster by reason of such abandonment.

      7.9  Reasonable Efforts Regarding Registration.  Whenever
under the preceding provisions of this Part 7 ServiceMaster is
required to register any Original Shares, ServiceMaster shall,
subject to the withdrawal right provisions of sub-paragraph (h) of
Section 7.8, use reasonable efforts to do the following in
connection with such registration of Original Shares pursuant to
the Securities Act and the underwritten public offering and sale of
Original Shares:

      (a)  prepare and file with the SEC a registration statement
           with respect to ServiceMaster Shares to be registered and
           use its reasonable efforts to cause such registration
           statement to become effective including, without
           limitation, responding to SEC staff comments in such
           manner as ServiceMaster deems reasonable;

      (b)  prepare and file with the SEC such amendments and
           supplements to such registration statement and the
           prospectus used in connection therewith as may be
           necessary to keep such registration statement effective
           for such period, not to exceed 90 days, as WMX shall
           request, and to comply with the provisions of the
           Securities Act with respect to the sale of all
           ServiceMaster Shares covered by such registration
           statement during such period;

<PAGE>

      (c)  provide WMX a reasonable opportunity to review and, in
           the case of registrations effected pursuant to Section
           7.3 hereof, approve prior to filing, any such
           registration statement;

      (d)  furnish to WMX such number of conformed copies of such
           registration statement and of each such amendment and
           supplement thereto (in each case including all exhibits),
           such number of copies of the prospectus included in such
           registration statement (including each preliminary
           prospectus and prospectus supplement), in conformity with
           the requirements of the Securities Act, and such other
           documents as WMX may reasonably request in order to
           facilitate the sale of ServiceMaster Shares covered by
           such registration statement;

      (e)  use its reasonable efforts to register or qualify
           ServiceMaster Shares covered by such registration
           statement under such other securities or blue sky laws of
           such jurisdictions as WMX shall reasonably request, and
           do any and all other acts and things which may be
           reasonably necessary or advisable to enable WMX to
           consummate the sale in such jurisdictions of such Shares;
           provided, that ServiceMaster shall not for any such
           purpose be required to qualify generally to do business
           as a foreign corporation in any jurisdiction wherein it
           would not but for the requirements of this clause (e) be
           obligated to be so qualified, to subject itself to
           taxation in any such jurisdiction or to consent to
           general service of process in any such jurisdiction;

      (f)  use its reasonable efforts to cause all Original Shares
           covered by such registration statement to be listed on
           each securities exchange on which ServiceMaster Shares of
           the same class issued by ServiceMaster are then listed
           or, if there shall then be no such listing, to be
           accepted for quotation on NASDAQ;

      (g)  provide a transfer agent and registrar for ServiceMaster
           Shares covered by such registration statement not later
           than the effective date of such registration statement;

      (h)  enter into such agreements (including an underwriting
           agreement in customary form) and take such other actions
           as WMX reasonably requests in order to expedite or
           facilitate the disposition of such Original Shares; and

      (i)  obtain a "cold comfort" letter from ServiceMaster's
           independent public accountants in customary form and
           covering such matters of the type customarily covered by
           "cold comfort" letters as WMX shall reasonably request.

<PAGE>

      7.10 WMX Support.  WMX shall furnish to ServiceMaster in
writing such information regarding WMX and the distribution of
Original Shares as ServiceMaster may reasonably request in writing
in connection with any registration, qualification or compliance
referred to in this Part 7, together with such representations and
warranties as ServiceMaster may reasonably request and shall take
such other actions as ServiceMaster shall reasonably request in
connection with such registration (provided that such requests are
not inconsistent with the relative rights and obligations of the
parties prescribed in this Agreement or more onerous than requests
made of other Secondary Sellers which are similarly situated).

      7.11 Indemnification. 

      (a)  ServiceMaster shall indemnify and hold harmless (i) WMX
           and, (ii) if WMX so requests, each underwriter of
           Original Shares registered under this Part 7 and (iii)
           the officers and directors of WMX and such underwriters
           and (iv) each Person, if any, who controls any thereof
           within the meaning of Section 15 of the Securities Act
           and their respective successors against all claims,
           losses, damages and liabilities (or actions in respect
           thereof) arising out of or based on any untrue statement
           (or alleged untrue statement) of a material fact
           contained in any prospectus, prospectus supplement,
           offering circular or other document incident to any
           registration or qualification (or in any related
           registration statement, amendment thereto or
           notification) or any omission (or alleged omission) to
           state therein a material fact required to be stated
           therein or necessary to make the statements therein not
           misleading, or any violation by ServiceMaster of the
           Securities Act or any rule or regulation promulgated
           under the Securities Act applicable to ServiceMaster and
           relating to action or inaction required of ServiceMaster
           in connection with any such registration or
           qualification, and (except as otherwise provided in
           Section 7.12(b)  below) shall reimburse WMX and each such
           underwriter for any legal and any other expenses
           reasonably incurred in connection with investigating or
           defending any such claim, loss, damage, liability or
           action; provided, however, that ServiceMaster shall not
           be liable in any such case to the extent that any such
           claim, loss, damage or liability arises out of or is
           based on any untrue statement or omission based upon
           written information furnished to ServiceMaster by an
           instrument duly executed by WMX or any underwriter and
           stated to be specifically for use therein.

      (b)  WMX shall indemnify and hold harmless ServiceMaster and
           its partners or shareholders, officers and directors and
           each person, if any, who controls any thereof within the

<PAGE>

           meaning of Section 15 of the Securities Act and their
           respective successors against all claims, losses, damages
           and liabilities (or actions in respect thereof) arising
           out of or based on any untrue statement (or alleged
           untrue statement) of a material fact contained in any
           prospectus, prospectus supplement, offering circular or
           other document incident to any registration or
           qualification (or in any related registration statement,
           amendment thereto or notification) or any omission (or
           alleged omission) to state therein a material fact
           required to be stated therein or necessary to make the
           statements therein not misleading, or any violation by
           ServiceMaster of the Securities Act or any rule or
           regulation promulgated under the Securities Act
           applicable to ServiceMaster and relating to action or
           inaction required of ServiceMaster in connection with any
           such registration or qualification, and (except as
           otherwise provided in Section 7.12(a) above) shall
           reimburse ServiceMaster and each other person indemnified
           pursuant to this Section 7.12(b) for any legal and any
           other expenses reasonably incurred in connection with
           investigating or defending any such claim, loss, damage,
           liability or action; provided, however, that this Section
           7.12(b) shall apply only if (and only to the extent that)
           such statement or omission was made in reliance upon
           information furnished to ServiceMaster by an instrument
           duly executed by WMX and stated to be specifically for
           use in such prospectus, offering circular or other
           document (or related registration statement or
           notification) or any amendment or supplement thereto and
           not corrected by any other written statement executed by
           WMX or an underwriter and given to ServiceMaster in time
           to correct the earlier written information.

      (c)  Each party entitled to indemnification under this Section
           7.12 (herein called the "indemnified party") shall give
           notice to the party required to provide indemnification
           (herein called the "indemnifying party") of any claim as
           to which indemnity may be sought promptly after such
           indemnified party obtains actual knowledge of such claim,
           and shall permit the indemnifying party (at its expense)
           to assume the defense of any such claim or any litigation
           resulting therefrom; provided however, that counsel for
           the indemnifying party who shall conduct the defense of
           such claim or litigation shall be reasonably satisfactory
           to the indemnified party, and the indemnified party may
           participate in such defense at the indemnified party's
           expense; and provided, further, that the omission by any
           indemnified party to give notice as provided herein shall
           not relieve the indemnifying party of its obligations
           under this Section 7.12(c), but a refusal to permit the
           indemnifying party to conduct such defense by such

<PAGE>

           counsel shall relieve such indemnifying party of its
           obligations under this Section 7.12(c).  No indemnifying
           party, in the defense of any such claim or litigation,
           shall, except with the consent of each indemnified party,
           consent to entry of any judgment or enter in any
           settlement which is binding on the indemnified party but
           which does not include as an unconditional term thereof
           the giving by the claimant or plaintiff to such
           indemnified party of a release from all liability in
           respect to such claim or litigation without any
           requirement for payment of any consideration by the
           indemnified party for such release which is not
           reimbursable by the indemnifying party.  No indemnified
           party shall, in connection with any such claim or
           litigation, consent to the entry of any judgment or enter
           into any settlement without the consent of the
           indemnifying party, which consent shall not be
           unreasonably withheld.
 
      7.12 Reports to be Filed; Rule 144.  For as long as WMX holds
Original Shares, ServiceMaster shall use all reasonable efforts to
file, on a timely basis, all annual, quarterly and other reports
required to be filed by it under Sections 13 and 15(d) of the
Exchange Act, and the rules and regulations of the SEC thereunder,
as amended from time to time.  In the event of any proposed sale of
Original Shares by WMX pursuant to Rule 144 (or any successor rule)
under the Securities Act, ServiceMaster shall cooperate with WMX so
as to enable such sales to be made in accordance with applicable
laws, rules and regulations.  

      7.13 Personal Rights of WMX.  The rights created by this Part
7 are personal to WMX, and are not assignable and shall not inure
to the benefit of any subsequent holder of Original Shares;
provided, however, that provided however that WMX shall have the
right to include Original Shares beneficially owned by any of its
affiliates in any registration to the same extent that WMX is
entitled to include its own Original Shares in any such
registration.


8.    Notice Commitment.

      8.1  Information Exchange.  Each party shall supply the other
with such information which the other party shall reasonably deem
relevant to the Relationship Agreements and which the supplying
party knows or can obtain.  The requesting party shall reimburse
the supplying party for all expenses the supplying party shall
reasonably incur to obtain or provide any requested information. 
No failure or delay by a party to satisfy its obligations under
this Section 8.1 shall justify or entitle the other parties to
delay or not to perform their obligations under this Agreement.

<PAGE>

      8.2  Takeover Approaches.  WMX shall use reasonable good faith
efforts to notify ServiceMaster promptly after WMX receives any
approach or other contact from any person indicating that such
person may be interested in exploring or otherwise pursuing (i) any
activity which would require WMX to take any action which would
require approval by ServiceMaster to avoid breach of the literal
requirements in this agreement or (ii) a Takeover.  WMX will also
provide ServiceMaster with such other information about each such
contact or approach as ServiceMaster shall reasonably request and
which WMX knows or has the ability to obtain.

      8.3  Actual Delivery.  Whenever any provision in this
agreement requires that a notice be "actually delivered" to a
person or uses the day of "actual delivery" as a standard for
starting or ending a time period, that notice shall be deemed
"actually delivered" when (but not until) it shall actually be
either (i)  delivered in writing to the chief executive offices of
the recipient and plainly marked for immediate delivery to the
recipient's chief executive officer, chief financial officer or
general counsel or (ii) successfully transmitted by fax to the
principal fax number used by the recipient's chief executive
officer, chief financial officer or general counsel.

      8.4  Regular Transmissions.  In order to be effective, any
notice or other communication pursuant to this Agreement must be in
writing and shall be deemed given if delivered personally,
telecopied, sent by nationally recognized overnight courier or
mailed by registered or certified mail (return receipt requested
and postage prepaid) to the recipient at the following address or
telecopy number:

      If to WMX or WMUS:

                 WMX Technologies, Inc.
                 3003 Butterfield Road
                 Oakbrook, Illinois 60521
                 Attention: General Counsel
                 Telecopy Number: 708 218-1553

      If to ServiceMaster:

                 ServiceMaster
                 One ServiceMaster Way
                 Downers Grove, Illinois 60515
                 Attention: General Counsel
                 Telecopy Number: 708 271-5870

Either party may change the address to which notices and other
communications hereunder are to be delivered by giving the other
party notice in the manner herein set forth.  

<PAGE>

9.    Reincorporating Merger.

      9.1  Adjustments to Reflect Reincorporating Merger.  

      (a)  WMX understands that: (i) ServiceMaster's shareholders
           have previously approved a merger described in a proxy
           statement/prospectus dated December 11, 1991 (the
           "Reincorporation Proxy Statement"); and (ii) the
           Reincorporation Proxy Statement contemplates that
           ServiceMaster Incorporated of Delaware will hereafter
           install a shareholder rights plan.

      (b)  The merger pursuant to which  ServiceMaster Incorporated
           of Delaware succeeds to the position now held by
           ServiceMaster Limited Partnership as the ultimate parent
           company for the ServiceMaster enterprise is herein called
           the "Reincorporating Merger".  ServiceMaster Incorporated
           of Delaware as it shall be constituted after giving
           effect to the Reincorporating Merger is herein sometimes
           called "ServiceMaster Incorporated".

      (c)  The Reincorporating Merger, the adoption of a shareholder
           rights program on terms approved by the ServiceMaster
           Board and other actions contemplated by the
           Reincorporation Proxy Statement or the Supplemental
           Disclosure are herein collectively called the
           "Reincorporation Actions".  

      (d)  WMX acknowledges that it has acquired the WM Shares
           subject to the pre-approval of the Reincorporating Merger
           by ServiceMaster's shareholders pursuant to the
           Reincorporation Proxy Statement.  WMX agrees that the
           issuance of the ServiceMaster shares pursuant to the
           Contribution Agreement (including any shares subsequently
           issued upon exercise of the WM Option) does not convey to
           WMX any right to vote with respect to the Reincorporation
           Actions and that by executing this Agreement, WMX grants
           any approval for the Reincorporation Actions which may be
           required by reason of its ownership of the WM Shares,
           provided that this sentence shall not be deemed to
           preclude WMX from voting on any matter upon which
           ServiceMaster's shareholders are generally entitled to
           vote in the future.  WMX agrees not to contest or
           question ServiceMaster's right to consummate the
           Reincorporating Merger or to install the shareholder
           rights plan or take any of the other Reincorporation
           Actions.

      (e)  After consummation of the Reincorporating Merger (i) the
           term "ServiceMaster" as used in this Agreement shall
           refer to ServiceMaster Incorporated of Delaware and (ii)
           the term "ServiceMaster shares" shall thereafter

<PAGE>

           designate and include shares of common stock issued by
           ServiceMaster Incorporated of Delaware and (iii) this
           Agreement shall remain in effect with respect to WMX, the
           shares issuable to WMX in the Reincorporating Merger, and
           all other ServiceMaster Shares thereafter beneficially
           owned by WMX and (iv) the consummation of the
           Reincorporating Merger shall not otherwise limit or
           impair the applicability of this Agreement in any
           respect.

      (f)  ServiceMaster hereby advises WMX that under Section 351
           of the Internal Revenue Code, the ability of
           ServiceMaster's shareholders to consummate the
           Reincorporating Merger without recognizing taxable income
           for federal income tax purposes requires that at the time
           of the merger, ServiceMaster's shareholders may not be
           parties to agreements obligating them in the aggregate to
           dispose of more than 20% of the  ServiceMaster shares
           then outstanding.  WMX hereby covenants that it will not
           be party to any obligation on the date of the
           Reincorporating Merger to Transfer more than 20% of the
           outstanding ServiceMaster shares then beneficially owned
           by WMX.  Not later than the fifth business day following
           actual delivery to ServiceMaster of any First Refusal
           Notice,  ServiceMaster shall advise WMX if ServiceMaster
           expects to consummate the Reincorporating Merger within
           the Free Disposition Period following the Review Period. 
           If ServiceMaster shall not provide such notice on or
           prior to such fifth business day or if ServiceMaster
           shall advise in such notice that ServiceMaster does not
           expect to consummate the Reincorporating Merger within
           the relevant Free Disposition Period, then WMX shall have
           the right to enter into agreements during that Free
           Disposition Period (to the extent not prohibited by other
           provisions in this Agreement) to sell any Free Shares
           which exist during that period without violating WMX's
           covenant in this Section 9.1(f) and shall have no
           liability on account of this Section 9.1(f) by reason of
           entering into such agreement or consummating such sale. 
           ServiceMaster shall provide WMX once each calendar
           quarter with a written notice reminding WMX of WMX's
           obligations under this paragraph and advising WMX when
           ServiceMaster then expects the Reincorporating Merger
           will occur.

      9.2  Other Retained Control Mergers.  

      (a)  In the event ServiceMaster shall engage in any other
           reorganization, merger or other business combination
           which does not involve a Control Change (as defined in
           Section 11.3) but which does result in the conversion of
           ServiceMaster shares into other shares, the replacement

<PAGE>

           of previously outstanding ServiceMaster shares in
           exchange for other shares (herein called a "Retained-
           Control Merger") then immediately after such Merger:  
           (i) the entity which shall issue the shares issuable in
           such Merger ("New ServiceMaster") shall have all rights
           granted to "ServiceMaster" under this Agreement and shall
           be subject to all obligations of ServiceMaster under this
           Agreement and the term "ServiceMaster" as used in this
           Agreement shall thereafter refer to New ServiceMaster;
           (ii) the shares issued in such Merger in exchange for
           ServiceMaster shares shall after such merger become
           "ServiceMaster shares" for purposes of this agreement
           (and all other shares then outstanding or thereafter
           issued by New ServiceMaster shall also be deemed
           "ServiceMaster shares"); (iii) this Agreement shall
           remain in effect with respect to WMX, the shares issuable
           to WMX in the Merger, and all other ServiceMaster Shares
           thereafter beneficially owned by WMX; and (iv) the
           consummation of the Merger shall not otherwise limit or
           impair the applicability of this Agreement in any
           respect.

      (b)  ServiceMaster shall take all steps necessary to cause New
           ServiceMaster to be fully bound by all provisions of this
           Agreement to the same extent as if New ServiceMaster had
           originally executed this Agreement in the capacity of
           ServiceMaster.

      (c)  In the event ServiceMaster shall spin off a business unit
           which shall have produced more than one third of its
           revenues or earnings during the four fiscal quarters most
           recently ended prior to such spin off or shall engage in
           any other transaction with similar substantive effect,
           then (i) both the enterprise which shall have spun off or
           otherwise distributed those shares and the enterprise
           which shall be spun off shall each be deemed
           "ServiceMaster" for purposes of this Agreement and (ii)
           each enterprise shall be deemed to be subject to a
           separate agreement identical to this Agreement and for
           purposes of its agreement shall be deemed to be New
           ServiceMaster and subject to the same rights and benefits
           contemplated for New ServiceMaster under the preceding
           Section 9.2(a).

      (d)  ServiceMaster Board.

           (1)   From the date of this Agreement until the earlier
                 to occur of the Reincorporating Merger or any other
                 Retained-Control Merger, each of the terms "Board",
                 "Board of Directors", "ServiceMaster Board", and
                 other similar terms means the Board of Directors of
                 ServiceMaster Management Corporation.

<PAGE>

           (2)   At the time the Reincorporating Merger consummates, 
                 each of the terms "Board", "Board of Directors",
                 "ServiceMaster Board", and other similar terms
                 shall change when applied as of a time after such
                 consummation and prior to any change made under the
                 next paragraph to mean the Board of Directors of
                 ServiceMaster Incorporated.

           (3)   Upon the consummation of any Retained-Control
                 Merger other than the Reincorporating Merger, each
                 of the terms "Board", "Board of Directors",
                 "ServiceMaster Board", and other similar terms
                 shall change when applied as of a time after such
                 consummation and prior to any change made under the
                 next paragraph to mean the Board of Directors or
                 other analogous governing body which shall govern
                 the entity which shall emerge from such Merger as
                 "New ServiceMaster" under the provisions in Section
                 9.2(a).

10.   Legends.

           Each certificate evidencing WM Shares and each
certificate issued in exchange for or upon the transfer of any WM
Shares (if such shares continue to be WM Shares) shall be stamped
or otherwise imprinted with a legend in substantially the following
form:

           "The securities represented by this
           certificate are subject to certain voting,
           transfer and other restrictions prescribed by
           a Relationship  Agreement dated December 31,
           1995, with WMX Technologies, Inc. A copy of
           such Relationship Agreement will be furnished
           without charge by the issuer of these
           securities upon written request."

The legend set forth above shall be removed from the certificates
evidencing any ServiceMaster Shares which cease to be WM Shares by
means of Transfers which do not breach this Agreement.


11.   Agreement Term.

      11.2 General Rule.  

      (a)  This Agreement shall terminate on the first to occur of
           (i) the first day after WMX shall have ceased to be a 1%
           Owner and shall not have been a 1% Owner at any time
           during the preceding 36 consecutive calendar months or
           (ii) January 1, 2030.  

<PAGE>

      (b)  After termination of this Agreement, no party shall have
           any rights or obligations under or by reason of this
           Agreement provided that (i)  each party shall have the
           right to prosecute claims which shall have arisen or
           accrued under this Agreement prior to such termination
           and to be reimbursed for the cost of prosecuting such
           claims to the extent provided in Section 13 and (ii) each
           party shall be liable for any such claims asserted
           against it to the extent such claims are valid. 

      C)   For purposes of this Agreement, a person shall be deemed
           to be a 1% Owner if such person shall beneficially own at
           least 1% of the ServiceMaster shares then outstanding or
           shall beneficially own shares representing at least 1% of
           the aggregate voting power of all ServiceMaster shares
           then outstanding.

      11.2 Transition Period.  

      (a)  Except as otherwise provided in this Section 11.2, the
           parties shall not be obligated to comply with the
           requirements of this agreement during any period (a
           "Transition Period") during which WMX is not a 5% Owner. 
           
      (b)  During the Transition Period, the parties shall continue
           to have the rights and obligations prescribed by parts 6
           - 13 of this Agreement.

      (c)  If requested by ServiceMaster at any time during a
           Transition Period or after the termination of this
           Agreement,  WMX shall cause WMX's representative to
           resign from the ServiceMaster Board promptly after actual
           delivery of such request to WMX.

      (d)  If WMX again becomes a 5% Owner prior to the termination
           of this Agreement, then (i) WMX shall promptly notify
           ServiceMaster of such fact and (ii) the parties shall
           again be obligated by all the provisions in this
           Agreement until the earlier of the time WMX again ceases
           to be a 5% Owner or the end of the agreement term
           prescribed in Section 11.1. 

      11.3 Control Change.  

      (a)  If a Control Change shall occur, then all rights and
           obligations of the parties under this Agreement shall
           terminate upon such occurrence except that 

           (1)   WMX shall continue to exercise the rights granted
                 under part 7 until WMX ceases to be a 1% owner and
                 until WMX ceases to be a 1% owner, parts 8 - 13
                 shall remain in effect, and

<PAGE>

           (2)   So long as WMX shall be a 5% Owner, WMX shall
                 continue to be entitled to Board representation in
                 accordance with Part 1, and 

           (3)   the parties shall have the rights available under
                 the proviso in Section 11.1(b).

      (b)  Tender Offer Control Change.  A "Control Change" shall be
           deemed to have occurred if and when a single person or a
           group of persons acting in concert shall make a tender
           offer for ServiceMaster or shall otherwise purchase
           ServiceMaster shares and after such tender offer or
           purchase such person or group shall have ownership of a
           majority of ServiceMaster's outstanding shares.

      (c)  Proxy Fight Control Change.  A Control Change shall also
           be deemed to have occurred if and when a majority of
           positions on the ServiceMaster Board shall be filled with
           Takeover Directors.  A person shall be deemed to be a
           Takeover Director for purposes of this Agreement if such
           person shall have been elected to the Board in a proxy
           contest in which such person's election was opposed by
           ServiceMaster.

      (d)  Merger Control Change.  A "Control Change" shall also be
           deemed to have occurred if and when the following
           conditions are satisfied:

           (1)   ServiceMaster shall engage in any merger or other
                 business combination with another enterprise; and

           (2)   substantially all of the businesses owned directly
                 or indirectly by ServiceMaster prior to such
                 combination shall be owned directly or indirectly
                 by the ultimate parent corporation which shall
                 emerge from such combination (the "acquiring
                 parent"); and

           (3)   a majority of the shares issued by the acquiring
                 parent corporation shall be neither (a) shares
                 which shall have been issued by ServiceMaster prior
                 to such combination or (b) shares issued in such
                 combination in exchange for shares which shall have
                 been issued by ServiceMaster prior to such
                 combination; and

           (4)   within six months after such combination a majority
                 of the positions on the  board of directors of the
                 acquiring parent shall be held by persons who were
                 not directors of ServiceMaster prior to such
                 combination for any reason other than due to normal

<PAGE>

                 retirement, death or resignation of directors in
                 the ordinary course.

12.   Interpretation of this Agreement.

      12.1 Additional Definitions.  Each of the following terms has
the meaning it is given below whenever it is used in this
agreement:

           Affiliate.  A person shall be deemed an "affiliate" of
      any other person if such person shall, directly or through any
      number of intermediaries, (a) control such other person, (b)
      be controlled by such other person, or (c) be controlled by
      the same person(s) who shall ultimately control such other
      person.  For purposes of the preceding sentence a particular
      person shall be deemed to control another person if (i) the
      particular person is the director or indirect owner of a
      majority of the ownership interest in the other person or (ii)
      the particular person has the power (directly or indirectly)
      to appoint or elect (either at one time or over time) (A) a
      majority of the members of the board of directors of the other
      person or (B) the person or body having equivalent authority
      over the other person.  Notwithstanding the preceding
      provisions, none of an organization's directors or employees
      shall be deemed an affiliate of that organization for purposes
      of this Agreement.  No ERISA Plan shall be deemed to be an
      affiliate of WMX for purposes of this Agreement.

           Business Day.  For purposes of this Agreement, a day
      shall be a "business day" unless it shall be (i) a Saturday or
      Sunday or (ii) a day upon which the New York Stock Exchange is
      not open for trading.

           Exchange Act.  The term "Exchange Act" means the
      Securities Exchange Act of 1934 as constituted at the time
      such term shall be applied and any other federal law in force
      at such time which shall at such time have superseded all or
      any part of the Exchange Act as constituted on the date hereof
      or which shall govern any activity governed by the Exchange
      Act as constituted on the date hereof.

           Relationship Agreements.  The term "Relationship
      Agreements" means this Agreement and the following additional
      agreements made by WMX, ServiceMaster and certain of their
      affiliates contemporaneously with this Agreement: the
      Contribution Agreement; the  WM Option Agreement; and the
      Cross-Marketing Agreement.

           Securities Act.  The term "Securities Act" means the
      Securities Act of 1933 as amended at the time as of which such
      term shall be applied and any other federal law which shall at
      such time have superseded all or any part of the Securities

<PAGE>

      Act as constituted on the date hereof or which shall govern
      any activity governed by the Securities Act as constituted on
      the date hereof.

           Securities Laws.  The term "Securities Laws" means all of
      the following laws as constituted at the time as of which the
      term shall be applied: The Securities Act; the Exchange Act;
      all other federal and state laws governing the offer, sale,
      purchase or other activities involving securities; and all
      governmental regulations and requirements issued or arising
      under any of these laws.

           ServiceMaster.  Prior to the first to occur of the
      Reincorporating Merger or another Non-Takeover Merger, the
      term "ServiceMaster" shall mean ServiceMaster Limited
      Partnership.  Thereafter the term shall have the meaning
      prescribed in part 9 of this Agreement.

           Transfer.  The term "Transfer" whenever it is used in
      this Agreement designates and includes any sale, transfer,
      assignment, pledge, hypothecation or other direct or indirect
      disposition of an interest in a security. 

      12.2 Severability.  To the extent permitted by applicable law,
each party hereby waives any provision of any law or other
governmental requirement which would otherwise render any provision
of this Agreement prohibited or unenforceable in any respect. 
Whenever possible, each provision of this Agreement shall be
interpreted in such manner as to be valid and enforceable under
applicable law, but if any provision of this Agreement shall be
held to be prohibited by or unenforceable under applicable law, (i)
such provision shall be applied to accomplish the objectives of the
provision as originally written to the fullest extent permitted by
law and (ii) all other provisions of this Agreement shall remain in
full force and effect.  Without limiting by implication the
generality of the foregoing, in the event that the covenant in
Section 4.2 shall for any reason be held unenforceable in
connection with any contested election of directors, then the votes
represented by the WMX Voting Shares shall be distributed among the
candidates for election in the same proportion as the votes cast by
persons who are not 5% Owners at the time of that election.

      12.3 Complete Agreement.  The Relationship Agreements contain
the complete agreement between the parties relating in any way to
the subject matter of those Agreements and supersede any prior
understandings, agreements or representations by or among the
parties, written or oral, which may have related to such subject
matter in any way.  

      12.4 No Oral Commitments.  No amendment, waiver, modification
or termination of this Agreement shall be effective or enforceable
unless it is set forth in writing and signed by the party against

<PAGE>

whom it is sought to be enforced.  No party hereto shall have the
right to rely upon or enforce any representation, warranty, or
agreement made by any other person before, on or after the date
hereof and relating to or impacting any of the subjects covered by
this Agreement unless such representation, warranty or agreement
shall be set forth in a writing which shall have been signed by the
person to be held responsible for such representation, warranty or
agreement.  No delay or omission in exercising any right hereunder
shall operate as a waiver of such right or of any other right.  A
waiver upon any one occasion shall not be construed as a bar or
waiver of any right or remedy on any future occasion.  All of the
rights and remedies of the parties hereto whether evidenced hereby
or by any other agreement, instrument or paper or whether granted
by law, shall be cumulative and may be exercised singly or
concurrently.

      12.5 No Strict Construction.  No rule of strict construction,
rule resolving ambiguities against the person who drafted the
provision giving rise to such ambiguities, or other such rule of
interpretation shall be applied against any party with respect to
this Agreement.

      12.6 Captions.  The captions used in this Agreement are for
convenience only, do not constitute a part of this Agreement and
shall not be deemed to limit, characterize or affect in any way any
of the provisions of this Agreement, and all of the provisions of
this Agreement shall be enforced and construed as if no captions
had been used in this Agreement.

      12.7 Counterparts.  This Agreement shall be come effective
when at least one copy of this Agreement shall have been signed by
ServiceMaster and delivered to WMX and at least one copy of this
Agreement shall have been signed by WMX and delivered to
ServiceMaster.  A particular party's signature on a copy of this
Agreement in the possession of any other unaffiliated party shall
constitute an acknowledgment by that particular party that the
particular party has received one or more copies of this Agreement
bearing the signatures of all other parties.  Two or more duplicate
originals of this agreement may be signed by the parties, and in
such a case, each duplicate copy shall be deemed an original but
all of the copies together shall be deemed to constitute one and
the same agreement.

      12.8 No Implied Limitation.  The word "including" whenever it
is used in this Agreement shall be interpreted to mean "including
but not limited to."  No provision in this Agreement shall be
construed to limit by implication the scope otherwise indicated by
any other provision in this Agreement.

      12.9 Miscellaneous Interpretive Rules.  Whenever the context
may require, any pronoun used in this Agreement shall include the
corresponding masculine, feminine or neuter forms, and the singular

<PAGE>

form of nouns, pronouns and verbs shall include the plural and vice
versa.  Words such as "herein", "hereinafter", "hereof", "hereto",
"hereby",and "hereunder" shall, unless the context otherwise
requires, be construed to refer to this Agreement.   Except as
otherwise explicitly indicated, each reference to number or letter
or a combination thereof used to identify a portion of this
Agreement shall be construed to refer to all provisions in this
Agreement marked by such number, letter or combination or by an
identifier which begins with such number, letter or combination.

      12.10  No Circumvention.  

      (a)  No WMX affiliate shall take any action which WMX is
           prohibited from taking under the terms of this Agreement. 
           
      (b)  No person shall be permitted to do indirectly by means of
           any transaction or series of transactions, scheme,
           artifice, device or contrivance, no matter how structured
           or labeled, anything which such person may not do
           directly under this Agreement.

      12.11  No Implied Purchase Obligations or Sale Restrictions. 
Nothing in this Agreement or any other agreement or anything else
shall be deemed to create any express or implied (i) obligation by
ServiceMaster to purchase any of its shares expect to the extent
ServiceMaster may become so obligated through ServiceMaster's
election to exercise its first refusal right or (ii) limitation on
ServiceMaster's right to issue or sell shares at such times, in
such manner and on such terms as ServiceMaster shall desire.


13.   Miscellaneous.

      13.1 Governing Law.  This Agreement shall be governed by and
construed in accordance with the internal laws of the State of
Delaware,  without giving effect to any choice of law or conflict
of law rules or provisions (whether of Delaware or any other
jurisdiction) that would cause the application of the laws of any
jurisdiction other than Delaware.

      13.2 Assignment.  Except as otherwise provided herein, each
party shall be entitled to assign its rights under this Agreement
to any other person but such assignment shall not release the
assignor of its obligation under this Agreement (whether arising
prior to or after such assignment).  This Agreement shall inure to
the benefit of and be binding upon the successors in interest to
each party to this Agreement.

      13.3 Consideration.  WMX hereby acknowledges that it has made
the commitments and  other covenants in this Agreement in order to
induce ServiceMaster to issue the ServiceMaster shares and the
option identified in Background Paragraph B and that those

<PAGE>

commitments and  other covenants are supported by adequate
consideration.  Each of the parties hereby (i) acknowledges and
warrants to the other parties that such party intends and agrees to
be bound by every obligation which this Agreement or any of the
other New Relationship Agreements purports to place upon such party
and (ii) covenants that such party will never assert (whether as a
defense against any injunction sought against it, as a defense to
any claim brought against it or otherwise) that any provision in
any of the New Relationship Agreements is not enforceable against
such party in accordance with its terms or that any of the New
Relationship Agreements is not legal, valid, or binding in whole or
in part.

      13.4 Remedies.  

      (A)  WMX hereby agrees that in the event WMX or any of its
           affiliates fails to comply with any provision in this
           Agreement which by its terms applies to WMX or any of its
           affiliates then: (i) money damages and any other remedies
           which might be available to ServiceMaster at law would be
           inadequate and (ii) ServiceMaster shall be entitled to
           specific enforcement of such provision and to injunctive
           relief to prevent any prospective violation of this
           Agreement, and (iii) ServiceMaster shall not be required
           to post any bond or other security in connection with any
           such specified performance or other injunctive relief.

      (B)  ServiceMaster hereby agrees that in the event
           ServiceMaster or any of its affiliates fails to comply
           with any provision in this Agreement which by its terms
           applies to ServiceMaster or any of its affiliates then:
           (i) money damages and any other remedies which might be
           available to WMX at law would be inadequate and (ii) WMX
           shall be entitled to specific enforcement of such
           provision and to injunctive relief to prevent any
           prospective violation of this Agreement, and (iii) WMX
           shall not be required to post any bond or other security
           in connection with any such specified performance or
           other injunctive relief.

      (C)  Each party to this agreement shall reimburse the other
           party for all reasonable attorneys fees and other costs
           which the other party shall reasonably incur to enforce
           the other party's rights under this Agreement.

                             *   *   *   *   *

<PAGE>

      Each party has executed this document at the place provided
below in order to evidence such party's agreement to be bound by
all of its terms.



WMX TECHNOLOGIES, INC.

By: /s/ James E. Koenig   
      Name: James E. Koenig   
      Title:   _____________________



WMI URBAN SERVICES, INC.

By:  /s/ Dale B. Tauke    
      Name: Dale B. Tauke
      Title:   _____________________



SERVICEMASTER LIMITED PARTNERSHIP

By: Service Master Management Corporation
      As Managing General Partner


      By: /s/ Ernest J. Mrozek  
           Name: Ernest J. Mrozek
           Title:  Sr. V. P. - C.F.O.  


SERVICEMASTER INCORPORATED OF DELAWARE

By: /s/ Vernon T. Squires    
      Name: Vernon T. Squires
      Title:   Vice President





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