Page 34
                                                             Exhibit 10(iii)A(3)


                                AMENDMENT OF
                       ASPIRATION ACHIEVEMENT INCENTIVE
                              AWARD AGREEMENT
                                   AND
                               ELECTION FORM



         WHEREAS,  the undersigned  Participant was granted an Aspiration  Award
under  the  NSI  Long-Term  Achievement  Incentive  Plan  (the  "Plan")  for the
Performance Cycle ending August 31, 2000; and

         WHEREAS,  under the Plan, the amount (if any) of the  Aspiration  Award
the Participant will receive for such Performance Cycle is currently  uncertain;
and
         WHEREAS, the Plan has been amended to permit the Participant to receive
all or a portion of the Aspiration Award in a different form;
         NOW, THEREFORE, the Participant hereby elects to receive any Aspiration
Award  earned for the  Performance  Cycle  ending  August 31, 2000 in the manner
provided below and agrees to amend the Aspiration  Achievement  Incentive  Award
Agreement in accordance with such election:
         1.  Amendment To Exchange  Award For Stock  Options.  By checking "YES"
below,  you are electing to amend your  Aspiration  Achievement  Incentive Award
Agreement for the  Performance  Cycle ending August 31, 2000 to provide that the
Award or portion of your Award that you specify  below will be exchanged for the
grant of  Options  to  acquire  NSI stock  under the  terms and  subject  to the
limitations set forth below.
         2.  Exchange  Formula.  The number of Options you will  receive will be

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                                                           Exhibit 10(iii)(A)(3)


determined as follows:  the amount of the Award to be exchanged  will be divided
by $12.29 (the value of an Option for one Share of NSI stock as of  September 8,
1999, based on Black-Scholes methodology) and multiplied by 1.5. The Options are
expected  to be  granted in  October  2000,  after  approval  of an amended  and
restated Plan by stockholders of National  Service  Industries,  Inc. in January
2000.  The exercise price for each Option will be the closing price of one Share
of NSI stock on the New York Stock  Exchange  on the date of the  grant.  In the
event  stockholders  do not approve the amended and restated Plan, the Executive
Resource and Compensation  Committee of the Board of Directors (the "Committee")
will have  discretion to pay the Award in Shares of NSI stock or in cash (or any
combination  of stock and cash) without  regard to your exchange  election.  Any
unexchanged  portion of your Award will be payable half in NSI stock and half in
cash.
         3.  Adjustment to Award Value.  Originally,  one-half of the Aspiration
Award,  determined  as of  August  31,  2000,  was to have been paid in cash and
one-half in NSI stock.  If you elect to amend your  Agreement,  the value of the
component of your Aspiration  Award which would have originally been paid in NSI
stock will be adjusted  to reflect  any change in NSI's  stock price  during the
period August 31, 2000 to the  Determination  Date (meaning that date in October
2000 on which the  Committee  determines  the  amount of the  Award  earned  and
payable).  The total value of the Award at the Determination Date will therefore
be equal to the total of (a) the amount of the Award as of August  31,  2000 and
(b) the amount (either gain or loss) calculated by multiplying (i) the number of
Shares you would have  originally  received  by (ii)

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                                                           Exhibit 10(iii)(A)(3)

the amount  resulting  from  subtracting  the Fair Market  Value of NSI stock on
August 31 from the Fair Market Value at the Determination Date.

         4. Limitation on Number of Options. The exchange will be limited by the
size of your Award payment and may be further reduced,  on a pro rata basis, for
Options  elected in excess of the aggregate  number of Options granted to you in
fiscal  2000  (or  a  fraction  thereof  determined  by  the  Committee  on  the
Determination  Date), if the total number of Options elected by all participants
exceeds the pool of Options  available for exchange.  It is the intention of the
Committee that a total of up to 400,000  Options will be available for exchange.
The final number of Options  available  will be  established by the Committee at
the  Determination  Date, and your election will be adjusted in accordance  with
the final number of Options available.
         5. Tax Treatment.  The amount of your  Aspiration  Award  exchanged for
Options should not be currently  taxable (i.e., it should be treated much like a
bonus deferral). The Options will be nonqualified options under the Plan. Please
see the  description  of the tax treatment  for  nonqualified  options  attached
hereto as Exhibit "1". Of course, you should consult your tax advisor.
         6. Terms of Stock  Options.  The  Options  will be  nonqualified  stock
options,  will be fully vested at the time of receipt,  and will have a ten-year
term except as follows:
                  (a) in the  case  of  termination  due to  death,  Disability,
         Retirement  at or  after  age 65,  or  involuntary  termination  by the
         Company  (other than for Cause),  the Options  will remain  exercisable
         until seven  years after the date of grant,  or one year after the date
         of termination,

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                                                           Exhibit 10(iii)(A)(3)

         whichever is later;
                  (b) in the case of  voluntary  termination,  the Options  will
         remain exercisable until 90 days after the date of termination; and
                  (c) in the case of involuntary  termination  for "Cause",  the
         Options will expire on the date of termination.
The  Options  will  generally  have  such  other  terms  and  conditions  as the
nonqualified Options granted by the Company in fiscal 2000.
- --------------------------------------------------------------------------------
                                  ELECTION

_____  YES, I elect to amend my  Agreement  to provide  for the  exchange  of my
Award, to the fullest extent  possible,  for the grant of Options to acquire NSI
stock,   under   the  terms  set  forth   above,   to  the   following   extent:

[ ] In exchange  for  $__________  of my Award (minimum $1,000).

[ ] In  exchange  for  _________%  of my Award (minimum $1,000).

[ ] In exchange for the grant  of_________  Options  (minimum 100 options).

The portion of the Award elected above (whether measured in dollars, percentage,
or  Options)  will be  surrendered  from the  total  value  of the  Award at the
Determination  Date. The  calculation of Options granted in the exchange will be
rounded down to the next whole amount.


_____    NO, I elect to continue to receive the entire Award payment half in NSI
stock and half in cash.

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                                                           Exhibit 10(iii)(A)(3)

         In order to make  this  election  effective,  sign and date  this form
below and return it to Helen Haines prior to November 23, 1999.




         The  undersigned  hereby  agrees  to amend the  Aspiration  Achievement
Incentive Award Agreement in accordance with the above election.


                                                     ---------------------------
                                                     Grantee

                                                     ---------------------------
                                                     Date


Received and Award Agreement
Amendment approved
on behalf of
National Service Industries, Inc.:


By:/s/ Helen D. Haines
   Helen D. Haines


- ---------------------------------------
                  Date