Page 27
                                                          Exhibit 10(iii)A(4)(d)

 

                                 AMENDMENT NO. 3
                                     TO THE
                        NATIONAL SERVICE INDUSTRIES, INC.
                         SENIOR MANAGEMENT BENEFIT PLAN


     THIS  AMENDMENT  made as of this  _____ day of  _______________,  1996,  by
National Service Industries, Inc. ("NSI");

                              W I T N E S S E T H:

     WHEREAS,  NSI has previously  established the National Service  Industries,
Inc. Senior  Management  Benefit Plan (the "Plan") for the exclusive  benefit of
its eligible employees and their beneficiaries; and

     WHEREAS,  effective  as  of  August  31,  1996,  NSI  will  reorganize  its
operations into several newly-formed corporations and limited partnerships; and

     WHEREAS,   NSI   desires  to  amend  the  Plan  in   connection   with  the
reorganization; and

     WHEREAS,  pursuant to the power of  amendment  contained in Section 11.4 of
the Plan, the Plan is hereby amended as follows:

                                       1.

     Section 1.9 of the Plan is hereby  amended by deleting  such section in its
entirety and substituting the following:

          "1.9  Employer.  For purposes of this Plan,  Employer  means  National
     Service  Industries,  Inc. (or its successor or successors).  Affiliated or
     related  employers  are  permitted  to adopt the Plan and shall be known as
     'Adopting  Employers.' To the extent required by certain  provisions (e.g.,
     Compensation  and service),  references  to the Employer  shall include the
     Adopting  Employer of the  Participant.  Adopting  Employers  are listed on
     Appendix 1."

                                       2.

     Section 1.11 of the Plan is hereby  amended by deleting such section in its
entirety and substituting the following:

          "1.11 Participant: An employee of Employer or Adopting Employer who is
     eligible to participate in the Plan according to standards adopted by Board
     of Directors of Employer and who elects to participate in this Plan."


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Exhibit 10(iii)A(4)(d)

                                       3.

     Section 10.2 of the Plan is hereby  amended by deleting such section in its
entirety and substituting the following:

          "10.2 Benefits  Unfunded:  The benefits provided by this Plan shall be
     unfunded.  All amounts  payable under this Plan to a  Participant  shall be
     paid from the general assets of the employer which principally  employs the
     Participant (the "Obligated Employer"),  and nothing contained in this Plan
     shall  require  the  Obligated  Employer  to set aside or hold in trust any
     amounts or assets for the purpose of paying benefits to Participants.  This
     Plan  shall  create  only  a  contractual  obligation  on the  part  of the
     Obligated  Employer  and  Participants  shall  have the  status of  general
     unsecured  creditors of the Obligated  Employer under the Plan with respect
     to amounts of Compensation  they defer hereunder or any other obligation of
     the Obligated  Employer to pay benefits  pursuant hereto.  Any funds of the
     Obligated  Employer available to pay benefits pursuant to the Plan shall be
     subject to the claims of general creditors of the Obligated  Employer,  and
     may be used for any purpose by the Obligated Employer. Any insurance policy
     or other asset  acquired  or held by the  Obligated  Employer  shall not be
     deemed to be held under any trust for the benefit of  Participant  or to be
     security  for  the  performance  of the  Obligated  Employer's  obligations
     pursuant hereto.

          Notwithstanding the preceding paragraph, the Obligated Employer may at
     any time transfer  assets to a trust for purposes of paying all or any part
     of its obligations under this Plan.  However, to the extent provided in the
     trust only, such transferred  amounts shall remain subject to the claims of
     general creditors of the Obligated Employer.  To the extent that assets are
     held in a  trust  when a  Participant's  benefits  under  the  Plan  become
     payable,  the Plan  Administrator  shall  direct  the  trustee  to pay such
     benefits to the Participant from the assets of the trust."

                                       4.

     Article X of the Plan is hereby amended by adding the following new section
     10.7:

          "10.7 Guarantee of Performance: In consideration of each Participant's
     performance of valuable services that inure to the financial benefit of the
     Company,  the Company does hereby  agree to perform all of the  obligations
     and  responsibilities and pay any benefits due and owing to the Participant
     under the Plan if the  Obligated  Employer  (as  defined in  Section  10.2)
     designated to perform such  obligations  and  responsibilities  or pay such
     benefits fails or is unable to do so."


                                                                         Page 29
                                                          Exhibit 10(iii)A(4)(d)

                                       5.

     The Plan is hereby amended by incorporating the following as Appendix 1:

                                   "Appendix 1
                               Adopting Employers

         North Bros., Inc.
         National Service Industries, Inc. of Georgia
         NSI Enterprises, Inc.
         Zep Manufacturing Company
         NSI Services, L.P."

                                       6.

     This Amendment shall be effective August 31, 1996.

                                       7.

     Except as provided herein,  the provisions of the Plan shall remain in full
force and effect.


     IN WITNESS  WHEREOF,  NSI has caused this Amendment No. 3 to be executed by
its duly authorized  corporate officer and is hereby accepted the same as of the
date and year first written above.


ATTEST:                                     NATIONAL SERVICE INDUSTRIES, INC.



By: _____________________________   By: _________________________________