December 14, 1995
                               PERINI CORPORATION

                              AMENDED AND RESTATED

                           CONSTRUCTION BUSINESS UNIT

                           INCENTIVE COMPENSATION PLAN


1.       PURPOSE

                  This  incentive  plan  is  designed  to  encourage  profitable
         performance  at the  Business  Unit level and to reward  and  recognize
         those  who  directly  affect  and  contribute  to  the  achievement  of
         specifically  targeted profit levels.  It is anticipated  that by tying
         incremental  compensation  to  operating  performance  over  which  the
         Participants  have a  substantial  degree of  influence,  the Plan will
         promote higher levels of  productivity  and additional  profits for the
         Company's  stockholders.  It is also  designed to tie all business unit
         Participants  to the  overall  performance  of the  Corporation  and to
         provide a portion of their  incremental  compensation from how well the
         Corporation meets its targets.

                  In order to accomplish the objective of increased productivity
         and  corporate  profitability,  the Plan has been  designed to meet the
         following criteria:

                  -        That there be a bonus available to Managers and other
                           key Business Unit personnel that is directly  related
                           to predetermined levels of profit.

                  -        That   outstanding   achievement   will   result   in
                           outstanding reward, i.e., the more profit earned, the
                           more Bonus key  personnel  will  receive,  subject to
                           overall Plan limitations.

                                        1





2.       DEFINITIONS
  
              For  Plan  purposes,   except  where  the  context   otherwise
         indicates, the following terms shall have the meanings which follow:
  
              "Base   Salary"  shall  mean  the  annual  base  salary  of  a
         Participant as reported on such Participant's W-2 Form,  inclusive of a
         "gross up" for 401K and group  insurance  deductions  but  exclusive of
         overtime compensation,  housing or travel allowances, bonuses, deferred
         compensation or other special compensation of any kind.
    

              "Beneficiary"  shall  mean the person or  persons,  who may be
         designated  by a  Participant  from  time  to time  in  writing  to the
         Committee, and who shall receive the Bonus, if the Participant dies.

   
              "Board" shall mean the Board of Directors of the Corporation.

   
              "Bonus" shall mean stock issued or cash paid to a Participant.

              "Bonus Period" shall mean a period,  generally a fiscal year, over
which  performance  will be measured as determined by the  Committee.  "Business
Unit" shall mean a  construction  division or  subsidiary  of the Company or its
subsidiaries designated as a construction business unit by the Committee.  "CEO"
shall mean the Chief Executive  Officer of the Company.  "Committee"  shall mean
the Compensation Committee, or such other Committee of the Board, which shall be
designated by the Board to administer the Plan. The Committee  shall be composed
of such number of directors  as from time to time are  appointed to serve by the
Board. Each member of the Committee, while

                                        2





serving as such, shall also be a member of the Board and shall be a
disinterested person within the meaning of Rule 16b-3 of the Securities
Exchange Act of 1934.

              "Company"  shall  mean  Perini  Corporation  and its  consolidated
subsidiaries.
               
              "Corporation"  shall mean Perini  Corporation and its consolidated
subsidiaries.
               
              "Fair Market Value" shall mean,  with respect to any given Payment
Date, the average of the last reported sale of Stock as reported by the American
Stock  Exchange  Composite  Tape  for the  five (5)  consecutive  business  days
immediately preceding the first (1st) business day prior to the Payment Date.

              "Participant" shall mean an individual designated as a participant
hereunder by the CEO with the approval of the Committee.  Such individual  shall
be a participant at the construction business unit level.

              "Payment  Date"  shall mean the date in any year the Bonus is paid
to the Participant with respect to performance during the prior year, which will
generally  be on or before  April 14 of the year  following  the Bonus Period in
which the Bonus is earned.

              "Performance  Goal"  shall mean such  Bonus  Period  objective  or
objectives as determined by the Committee. Such objective or objectives shall be
Pretax Profits and/or such other  performance  indicators of the business unit's
results during a Bonus Period, which may involve  establishment of predetermined
ranges of Pretax Profits with a bonus pool calculated based upon a percentage of
actual Pretax Profits  achieved as set forth in Schedule A(I) with such schedule
subject  to  review  by the  Committee  annually.  In the case of the  Corporate
Performance goal, a minimum earnings per

                                        3





share result and/or other minimum hurdle required to qualify for bonus
payments will be applied consistent with the minimum earnings per share
result and/or other minimum hurdle required by the Perini Corporation
Corporate General Incentive Compensation Plan in each year and payment
under this segment of the plan will be made as indicated in Schedule
A(II).

              "Plan"  shall mean the Perini  Corporation  Amended  and  Restated
Construction  Business Unit Incentive  Compensation Plan as set forth herein and
as amended from time to time.

              "Pretax  Profit - Business  Unit" shall mean the  contribution  to
corporate  earnings after  deduction for all business unit expenses,  including,
without limitation,  general and administrative  expenses (including general and
administrative expenses allocated from general corporate overhead and "in-house"
service   departments),   over-  or  under-absorbed   equipment  costs,  over-or
under-absorbed  payroll fringes,  interest income or expense  (including imputed
interest), bonuses payable under the Company's Project Management Incentive Plan
and 401K plan  expenses,  but prior to provision for taxes and for Bonuses under
this Plan.

              "Pretax  Profit - Corporation"  shall mean pretax  earnings of the
corporation, after Bonuses for Corporate and Business Unit performance.

              "Stock"  shall mean the common  stock of the Company  having a par
value of $1.00 per share.

3.       ADMINISTRATION

                  (a) The Compensation Committee, or such other Committee of the
         Board of Directors  designated by the Board, shall administer the Plan.
         The  administration of the Plan shall include the power to: (i) approve
         Participants  participation  in the Plan,  (ii)  establish  Performance
         goals,  (iii) determine if and when any Bonuses shall be paid, (iv) pay
         out any  Bonuses,  in cash or Stock or a  combination  thereof,  as the
         Committee  shall determine from year to year, (v) determine the amount,
         which  may be  calculated  utilizing  the  allocations  established  in
         accordance  with  Section 6 hereof,  and the form of the Bonus,  and if
         deemed  appropriate  to adjust  targets or payments to reflect  special
         achievements  for which no bonus would,  by strictest  adherence to the
         plan,  be  due  or to  adjust  actual  results  to be  used  for  bonus
         performance  measures in the event of one- time-only or unusual charges
         or additions to earnings such as special  write-offs  or  extraordinary
         gains.  (vi) impose,  and change from time to time, the maximum amounts
         or percentages payable under the Plan, (vii) construe and interpret the
         Plan, and (viii)  establish  rules and  regulations  and to perform all
         other acts it believes  reasonable and proper,  including the authority
         to delegate  responsibilities  to others to assist in administering the
         Plan. Any decision made, or action taken, by the Committee, arising out
         of, or in connection with, the interpretation and administration of the
         Plan shall be final and conclusive.

                  (b) Until such time as the Committee makes a determination  to
         make payment of the incentive  compensation  hereunder  with respect to
         the  actual  results   compared  to  the  Performance   Goals  for  the
         immediately  preceding  Bonus  Period,  no  Participant  shall have any
         vested right to receive any amount which might be calculated as payable
         pursuant to the Plan.  Furthermore,  for any Bonus  Period and up until
         the Payment

                                        4





Date,  the  Committee  may  cancel  any  Bonuses  awarded  under  the  Plan if a
Participant  conducts  himself  or  herself  in a  manner  which  the  Committee
determines to be inimical to the best interests of the Company.

4.       ELIGIBILITY

                  (a)  Eligibility to  participate  under the Plan is limited to
         individuals  who  are  managers  and  key  employees  at the  Company's
         construction  Business  Unit level  whose  duties and  responsibilities
         provide them the  opportunity  to (i) make a material  and  significant
         impact to the  financial  performance  of the Company;  (ii) have major
         responsibility  in the control of the business  unit assets;  and (iii)
         provide   critical  staff  support   necessary  to  enhance   operating
         profitability.

                  (b) Eligibility and designated levels of participation will be
         determined by the CEO subject to Committee  approval.  Such eligibility
         and level of participation may be revised and updated from time to time
         up until July 31 of the Bonus Period,  and thereafter  only for unusual
         circumstance.  The  fixing of  eligibility  and level of  participation
         shall not create any vested right in any participant to receive a bonus
         hereunder.

                  (c) A Participant  may have  responsibilities  at levels other
         than at the  Business  Unit  level and  therefore  qualify to receive a
         bonus,  if any,  based on the  performance  of such other  level  under
         another  plan of the  Company.  The  Committee,  as it  deems  fair and
         equitable in its sole  discretion,  shall apportion such  Participant's
         Base  Salary  between  such  pools for  purposes  of  determining  such
         Participant's Bonus allocation.

                  (d) Eligible Participants who are transferred during the Bonus
         Period may have  their  Bonus  pro-rated,  based on their  normal  Base
         Salary  charged to the  business  unit level or other level  within the
         Company during such Bonus Period.

5.       RESERVATION OF STOCK FOR ISSUANCE

                  After the end of each Bonus  Period  but prior to the  Payment
         Date  applicable  for such Bonus  Period,  the Board shall  reserve for
         issuance,  from  authorized but unissued Stock or reacquired  shares of
         Stock held in Treasury,  such number of shares of Stock  sufficient  to
         pay that  portion,  if any,  of the Bonus to be paid in Stock under the
         Plan as may be determined for such year in accordance  with  subsection
         3(a)(iv) hereof for the immediately  preceding Bonus Period;  provided,
         however,  the  aggregate  number of shares of Stock issued and reserved
         for issuance  under the Plan shall not violate the rules or regulations
         of any stock exchange  (including but not limited to any rule requiring
         stockholder  approval for the issuance of Stock hereunder) on which the
         Stock is  listed  or any  governmental  authority  having  jurisdiction
         thereunder.

6.       EARNING THE BONUS

              The Bonus to be earned will depend on the following factors:

              (a)           75% of the bonus earned will be based on Achievement
                            of Business  Unit Pretax  Profit as  established  in
                            Section 7 and Schedule A.

              (b)           25% of the bonus earned will be based on Achievement
                            of Corporate Pretax Profit,  as described in Section
                            2.

              The total  payout  will be limited  by the amount  established
         from the Business Unit Bonus Pool.


                                        5





7.       ESTABLISHMENT OF THE BONUS POOL

                  For each  Bonus  Period,  the pool to be  established  for the
         determination  of Bonuses  (the "Bonus  Pool")  shall be the lower of a
         percentage,  subject to a maximum of 10%,  of the  applicable  business
         unit's  Pretax  Profits  as  determined  by the  Committee  in its sole
         discretion  or  $1000  per  point  based  on the  aggregate  number  of
         Participants'  points.  Such  percentages  and levels of Pretax Profits
         will be  reviewed  annually  and may be revised  by the CEO  subject to
         Committee approval.  The initial Performance Goals for the construction
         Business  Units and the  resulting  Bonus Pool  percentages  are as set
         forth in Schedule A annexed hereto.

8.       ALLOCATION OF BONUS POOL

                  (a) The number of points to which the  Participant is entitled
         is  determined  by  multiplying  the  Participant's   Base  Salary,  in
         thousandths,  by the  Point  Factors  assigned  to his or her  level of
         participation as set forth in Schedule B annexed hereto. For example, a
         Level IV  Participant  earning  $66,000  will have 33 points  [66 (Base
         Salary in thousandths) x .50 (Point Factor assigned to Level IV) = 33].
 
                  (b) The total number of points awarded to all  Participants is
         divided into the  available  Bonus Pool to determine  the "dollar value
         per point", subject to a maximum of $1,000 per point.

                  (c) The amount of a Participant's  Bonus is then determined by
         multiplying  the number of points to which the  Participant is entitled
         by the "dollar value per point".

                  (d)  Up  to  25%  of  each  Participant's  Bonus  may  be  (i)
         reallocated  to previously  established  pool  Participants  on a basis
         other than the initial salary points assigned,  or (ii) reduced by such
         amount,  at the discretion of the CEO,  subject to Committee  approval.
         This  reallocation  to other  Participants  may  result  in such  other
         Participants  earning Bonuses of greater than $1,000 per point, subject
         to a maximum of one times the  Participant's  Base Salary. In the event
         of  reallocation,  the  amount of the total  Bonus  Pool may not exceed
         $1,000 multiplied by the total points assigned to such Business Unit.

9.       PAYMENT OF BONUSES

                  (a) If approved by the Committee,  payment of the cash portion
         of any Bonus under the Plan shall be made on the Payment Date.  Bonuses
         may be paid in cash or Stock or any percentage of cash and Stock as the
         Committee shall determine in its sole discretion.

                  (b) If any portion of the Bonus is to be paid in Stock, on the
         Payment Date, or as soon thereafter as practical, the Participant shall
         be issued a certificate registration in his or her name, for the number
         of shares of Stock which would  result by dividing  the dollar value of
         that portion of the Participant's  Bonus to be received in Stock by the
         Fair Market  Value with  respect to the  Payment  Date.  No  fractional
         shares  will be  issued.  Cash  will be paid in lieu of any  fractional
         shares.

                  (c) Payment of 75% of the bonus pool  calculated in accordance
         with  Sections  7 and 8 under  this  plan will be paid out based on the
         achievement of Business Unit Pretax Profit Targets and 25% of the bonus
         pool  calculated  in  accordance  with Sections 7 and 8 under this plan
         will be paid  out  based on the  achievement  of the  Corporate  Pretax
         Profit Target.

                                        6





10.      TERMINATION OF EMPLOYMENT

                  In the  event  a  Participant  ceases  to be  employed  by the
         Company or any subsidiary Company of the Company:

                  (a)  Due  to  normal  retirement,  or  early  retirement  with
         Committee  consent,  under a formal plan or policy of the  Company,  or
         total and permanent  disability,  as determined  by the  Committee,  or
         death, Participant's eligibility, pro rata, shall continue to remain in
         effect for the duration of the applicable Bonus Period. In the event of
         such  a  termination  of  employment,  the  Participant,  or her or his
         Beneficiary,  on the Payment Date, shall receive the  Participant's pro
         rated Bonus for the applicable Bonus Period.

                  (b) In the  event  that a  Participant  shall  cease  to be an
         employee of the Company or any  subsidiary  corporation  of the Company
         upon the occurrence of any other event, participant's eligibility under
         the Plan shall be cancelled and  terminated  forthwith,  and no Bonuses
         shall  be  payable  under  the Plan  except  as and to the  extent  the
         Committee may determine otherwise.

                  (c) For purposes of the preceding,  it shall not be considered
         a termination of employment when a Participant is placed by the Company
         or subsidiary  company of the Company on military or sick leave or such
         other  type of leave of  absence,  for a period of six  months or less,
         which is considered as continuing intact the employment relationship of
         the  Participant.  For any such leave  extending  beyond six months the
         Committee shall decide whether and when there has been a termination of
         employment.


                                        7





11.      ADJUSTMENTS

                  If there shall be any change in the Stock  subject to the Plan
         through merger, consolidation, reorganization,  recapitalization, stock
         dividend,  stock  split,  exchange  of  stock or  other  change  in the
         corporate  structure,  appropriate  adjustments  shall  be  made in the
         aggregate number and kind of shares subject to the Plan to reflect such
         changes,  if and to  the  extent  determined  by the  Committee,  whose
         determination shall be conclusive.

12.      AMENDMENT AND TERMINATION OF PLAN

                  The Board may, at any time, and from time to time,  suspend or
         terminate the Plan in whole or in part or amend it from time to time in
         such  respects  as the  Board  may  deem  appropriate  and in the  best
         interests of the Company.

13.      GOVERNMENT AND OTHER REGULATIONS

                  The  obligation  of the  Company  to issue,  or  transfer  and
         deliver  shares  for  Bonuses  under the Plan  shall be  subject to all
         applicable laws,  regulations,  rules and orders which shall then be in
         effect.

14.      UNFUNDED PLAN

                  The  Plan,  insofar  as it  provides  for  payments,  shall be
         unfunded and the Company  shall not be required to segregate any assets
         which  may at any time be  subject  to  Bonuses  under  the  Plan.  Any
         liability  of the Company to any person with respect to any award under
         this Plan shall be based solely upon any contractual  obligations which
         may be created under this Plan.


                                        8





15.      MISCELLANEOUS PROVISIONS

                  (a) Right to  Continued  Employment:  No person shall have any
         claim or right to be granted a Bonus under the Plan, and the grant of a
         Bonus under the Plan shall not be construed  as giving any  Participant
         the right to be retained in the employ of the Company or any subsidiary
         company of the Company and the Company expressly  reserves the right at
         any time to dismiss a Participant with or without cause,  free from any
         liability, or any claim under the Plan.

                  (b) Non-Transferability: Except by will or the laws of descent
         and  distribution,  no right or interest of any Participant in the Plan
         shall be  assignable  or  transferable  and no right or interest of any
         Participant shall be liable for, or subject to, any lien, obligation or
         liability of such Participant.

                  (c)  Withholding  Taxes:  The Company  shall have the right to
         withhold from cash payments sufficient amounts to cover tax withholding
         for income and employment  taxes,  and if the amount of cash payment is
         insufficient,  the Company may require the Participant to pay to it the
         balance  required to be withheld.  Likewise,  the Company may require a
         payment to cover applicable withholding for income and employment taxes
         in the event any part of the Bonus is paid in Stock.

                  (d) Plan  Expenses:  Any expenses of  administering  this Plan
         shall be borne by the Company.

                  (e) Legal Considerations:  No person, including a Participant,
         or his or her Beneficiary, shall have any claim or right to the payment
         of an award,  if, in the  opinion  of  counsel  for the  Company,  such
         payment does not comply with legal requirements, or

                                        9





         is opposed to governmental public policy.

                  (f) Other Plans:  Nothing  contained  herein shall prevent the
         Company from  establishing  other  incentive and benefit plans in which
         Participants  in the Plan may also  participate.  However,  any amounts
         paid to a Participant  with respect to Bonuses under the Plan shall not
         affect the level of benefits provided to or received by any Participant
         (or his or her  estate or  Beneficiary)  as part of any other  employee
         benefit plan of the Company.

                  (g) No Warranty of Tax Effect:  No opinion  shall be deemed to
         be expressed or warranties made as to the effect for federal,  state or
         local tax purposes of any Bonuses.

                  (h) Construction of Plan: The place of  administration  of the
         Plan shall be in the Commonwealth of  Massachusetts,  and the validity,
         construction, interpretation, administration and effect of the Plan and
         of its rules and regulations, and rights relating to the Plan, shall be
         determined  solely in accordance  with the laws of the  Commonwealth of
         Massachusetts.



                                       10





                                   Schedule A


                           Calculation of Bonus Pools


I.       Contributions to Pretax Profits* by Construction's


           Building          Heavy           Bonus Pool
        Business Units   Business Units     Percentages**
        --------------   --------------     -------------

      <= $ 1,999,000   <= $ 2,999,000             0%
           2,000,000        3,000,000             2%
           2,500,000        4,000,000             3%
           3,000,000        5,000,000             4%
           3,500,000        6,000,000             5%
           4,000,000        7,000,000             6%
           4,500,000        8,000,000             7%
           5,000,000        9,000,000             8%
           5,500,000       10,000,000             9%
        >= 6,000,000    >= 11,000,000            10%
                                                ----


*        Pretax Profits falling within the above specified levels will result in
         a Bonus Pool percentage based upon straightline  interpolation  between
         the specified levels. For example, building construction's contribution
         of  $2,225,000  to Pretax  Profits will result in a Bonus Pool equal to
         2.5% of the Pretax Profits.

**       Represents percentages applied to Pretax Profits to determine amount in
         Bonus  Pool,  subject to maximum  bonus  pool  limitation  of $1000 per
         point.


II. The payout of the 25% based on Corporate Pretax Profits will be as follows:

         75-79% of Corporate  Performance  Goal = 10% of bonus (2 1/2% of total)
         80-84% of Corporate  Performance  Goal = 35% of bonus (8 3/4% of total)
         85-89% of Corporate  Performance Goal = 75% of bonus (18 3/4% of total)
         90% + of Corporate Performance Goal = 100% of bonus (25% of total)



                                       11




                                   Schedule B


                    Participant's Level of Participation and
                              Related Point Factors


                         
                                 Point Factor
                                   Assigned
                                   --------

Level I                              1.00
Level II                             0.75
Level III                            0.60
Level IV                             0.50
Level V                              0.40
Level VI                             0.25


                                       12