The Commonwealth of Massachusetts

                             Michael Joseph Connolly
                               Secretary of State
                    One Ashburton Place, Boston, Mass. 02108

                      Federal Identification No. 04-1717070

                        RESTATED ARTICLES OF ORGANIZATION
                     General Laws, Chapter 156B, Section 74


         This certificate must be submitted to the Secretary of the Commonwealth
within  sixty  days  after  the date of the vote of  stockholders  adopting  the
restated  articles  of  organization.  The fee for filing  this  certificate  is
prescribed by General Laws, Chapter 156B, Section 114.
Make check payable to the Commonwealth of Massachusetts.

         We, David B. Perini,  President and Patricia A. Kelly,  Clerk of Perini
Corporation located at 73 Mt. Wayte Avenue,  Framingham,  Massachusetts 01701 do
hereby certify that the following restatement of the articles of organization of
the  corporation was duly adopted at a meeting held on December 9, 1987, by vote
of the Board of Directors.

1.       The name by which the corporation shall be known is:

                  See Article 1 of Exhibit A

2.       The purposes for which the corporation is formed are as follows:

                  See Article 2 of Exhibit A

3.       The total number of shares and the par value,  if any, of each class of
         stock which the corporation is authorized to issue is as follows:

                  See Article 3 of Exhibit A



                           WITHOUT PAR VALUE                                      WITH PAR VALUE
CLASS OF STOCK              NUMBER OF SHARES                      NUMBER OF SHARES               PAR VALUE

                                                                                            
Preferred                                                         1,000,000                      $1.00

Common                                                            7,500,000                      $1.00




                                        1





4.       If more  than one class is  authorized,  a  description  of each of the
         different  classes  of stock  with,  if any,  the  preferences,  voting
         powers, qualifications,  special or relative rights or privileges as to
         each class thereof and any series now established.

                  See Article 4 of Exhibit A

5.       The restrictions,  if any, imposed by the articles of organization upon
         the transfer of shares of stock of any class are as follows:

                  See Article 5 of Exhibit A

6.       Other lawful provisions,  if any, for the conduct and regulation of the
         business and affairs of the corporation, for its voluntary dissolution,
         or for limiting, defining, or regulating the powers of the corporation,
         or of its directors or stockholders, or of any class of stockholders:

                  See Article 6 of Exhibit A

                                    EXHIBIT A

                               PERINI CORPORATION

                        RESTATED ARTICLES OF ORGANIZATION

1.       The name by which the corporation shall be known is:

                               PERINI CORPORATION

2.       The purposes for which the corporation is formed are as follows:

                  To carry on a general  contracting and construction  business;
to carry on a  general  mining  business;  to carry on a general  business  with
respect to oil,  gas and other  natural  resources;  to carry on a general  real
estate  development and operations  business;  to carry on a general business of
promoting,  conducting or producing any one or more lawful athletic or amusement
activities and  exhibitions;  to carry on a general business of manufacturing or
otherwise  producing,  acquiring,  preparing  for  market,  buying and  selling,
dealing in and with and disposing of any and all kinds of construction, sporting
and  amusement  equipment,  materials  and supplies and any and all products and
by-products thereof, any and all ingredients, supplies and items in any stage of
production, used or useful in combination with, in substitution for or otherwise
in  connection  with or of which  any one or more  such  products,  by-products,
ingredients,  supplies or items form or are suitable to form,  a component  part
and all related machinery,  appliances,  apparatus and tools; to acquire,  hold,
use and dispose of property of whatever kind and wherever  situated,  and rights
and interests  therein,  including  going  enterprises  and the  acquisition  of
interests in and obligations of other

                                        2





concerns (wherever and however organized) or of individuals, and while the owner
thereof to exercise all the rights,  powers and  privileges  of ownership in the
same manner and to the same extent that an individual might; to discover, invent
or acquire rights and interests in inventions,  designs,  patents, patent rights
and  licenses,  trademarks,  trade names,  copyrights  and trade  secrets in any
field,  whether or not cognate to any other activity of the  corporation  and to
hold, use, sell, license the use of or otherwise utilize,  deal in or dispose of
the  same;  to lend  money,  credit  or  security  to,  to  guarantee  or assume
obligations  of and to aid in any other  manner  other  concerns  (wherever  and
however  organized) or  individuals,  any obligation of which or any interest in
which is held by this  corporation or in the affairs or prosperity of which this
corporation  has a lawful  interest,  and to do all acts and things  designed to
protect,  improve or enhance the value of any such  obligation  or interest;  to
join with others in any enterprise  conducive to the success of the corporation,
in such manner and on such terms and  conditions  as may be agreed upon;  and in
general,  whether as principal or as agent or  contractor  for others and in any
manner,  to do every act and thing  and to carry on any and all  businesses  and
activities in any way connected with any of the foregoing  which may lawfully be
done or carried on by business corporations wherever such one or more businesses
or  activities  may be so done and to exercise  all the powers  conferred by the
laws of The Commonwealth of Massachusetts upon business corporations,  provided,
however,  that the  corporation  is not organized for any purpose which prevents
the  provisions  of Chapter 156 B of the General Laws of said  Commonwealth  and
acts in amendment thereof and in addition thereto, from being applicable to it.

3.       The total number of shares and the par value,  if any, of each class of
         stock which the corporation is authorized to issue is as follows:

                     Without Par Value           With Par Value

                         Number of         Number of
Class of Stock           Shares            Shares         Par Value

  Common                 None              7,500,000          $1.00
  Preferred              None              1,000,000           1.00

Series of Preferred Stock

  $21.25 Convertible
  Exchangeable
  Preferred Stock        None                100,000           1.00

         Two classes of stock are authorized, Common Stock having a par value of
$1.00 per share and Preferred Stock having a par value of $1.00 per share. Stock
of any class or series  authorized  pursuant  hereto may be issued  from time to
time by authority of the Board of Directors for such  consideration as from time
to time may be fixed by vote of the Board of Directors.

                                        3





         I. The Preferred Stock may consist of one or more series.  The Board of
Directors may, from time to time,  establish and designate the different  series
and the  variations  in the  relative  rights and  preferences  as  between  the
different series as provided in Section II hereof, but in all other respects all
shares of the Preferred Stock shall be identical.  In the event that at any time
the Board of Directors shall have  established and designated one or more series
of  Preferred  Stock  consisting  of a number  of  shares  less  than all of the
authorized number of shares of Preferred Stock, the remaining  authorized shares
of  Preferred  Stock shall be deemed to be shares of an  undesignated  series of
Preferred Stock until  designated by the Board of Directors as being a part of a
series  previously  established  or a new series then being  established  by the
Board of Directors.

         II. Subject to the provisions of this  Description of Classes of Stock,
the  Board of  Directors  is  authorized  to  establish  one or more  series  of
Preferred Stock and, to the extent now or hereafter permitted by the laws of the
Commonwealth  of  Massachusetts,  to fix and determine the  preferences,  voting
powers,  qualifications  and special or relative  rights or  privileges  of each
series including, but not limited to:

(a)      the number of shares to  constitute  such  series  and the  distinctive
         designation thereof;

(b)      the dividend rate on the shares of such series and the preferences,  if
         any, and the special and relative  rights of such shares of such series
         as to dividend;

(c)      whether or not the shares of such series shall be  redeemable,  and, if
         redeemable, the price, terms and manner of redemption;

(d)      the  preferences,  if any, and the special and  relative  rights of the
         shares of such series upon liquidation of the corporation;

(e)      whether  or not the  shares  of such  series  shall be  subject  to the
         operation  of a sinking  or  purchase  fund and,  if so,  the terms and
         provisions of such fund;

(f)      whether  or not the shares of such  series  shall be  convertible  into
         shares  of any other  class or of any  other  series of the same or any
         other  class of stock of the  corporation  and,  if so, the  conversion
         price or ratio and other conversion rights;

(g)      the  conditions  under  which the  shares  of such  series  shall  have
         separate voting rights or no voting rights; and

(h)      such  other  designations,  preferences  and  relative,  participating,
         optional or other special  rights and  qualifications,  limitations  or
         restrictions  of such  series  to the  full  extent  now and  hereafter
         permitted by the laws of the Commonwealth of Massachusetts.

                                       4
                  




         Notwithstanding  the  fixing of the  number of  shares  constituting  a
         particular series, the Board of Directors may at any time authorize the
         issuance of additional shares of the same series.

         III. Holders of Preferred Stock shall be entitled to receive,  when and
as delivered by the Board of Directors,  but only out of funds legally available
for the payment of dividends,  cash dividends at the rates fixed by the Board of
Directors for the respective  series,  payable on such dates in each year as the
Board of Directors shall fix for the respective series as provided in Section II
(hereinafter  referred to as "dividend  dates").  Until all accrued dividends on
each series of Preferred  Stock shall have been paid through the last  preceding
dividend date on each such series, no dividend or distribution  shall be made to
holders of Common  Stock  other than a dividend  payable in Common  Stock of the
corporation.  Dividends on shares of any  cumulative  series of Preferred  Stock
shall  accumulate  from and after the day on which such shares are  issued,  but
arrearage  in the  payment  thereof  shall  not bear  interest.  Nothing  herein
contained  shall be deemed to limit the right of the  corporation to purchase or
otherwise acquire at any time any shares of its capital stock.

         For  purposes  of this  Description  of Class of Stock,  the  amount of
dividends "accrued" on any shares of any cumulative series of Preferred Stock as
at any  dividend  date shall be deemed to be the amount of any unpaid  dividends
accumulated  thereon to and including such dividend date,  whether or not earned
or declared.  The amount of dividends  "accrued" on any noncumulative  series of
Preferred  Stock  shall  mean  only  those  dividends  declared  by the Board of
Directors,  unless otherwise specified for such series by the Board of Directors
pursuant to Section II.

         IV. Upon the voluntary or involuntary  liquidation of the  corporation,
before any payment or  distribution  of the assets of the  corporation  shall be
made to or set apart for any other  class of stock,  the  holders  of  Preferred
Stock shall be entitled to payment of the amount of the preference payable upon
such  liquidation  of the  corporation  fixed by the Board of Directors  for the
respective series as provided in Section II. If, upon any such liquidation,  the
assets of the corporation shall be insufficient to pay in full to the holders of
the Preferred Stock the preferential amount aforesaid,  then such assets, or the
proceeds  thereof,  shall be  distributed  among the  holders of each  series of
Preferred  Stock ratably in  accordance  with the sums which would be payable on
such  distribution  if all sums payable were  discharged in full.  The voluntary
sale,  conveyance,  exchange  or  transfer  of all or  substantially  all of the
property  and  assets of the  corporation,  the merger or  consolidation  of the
corporation  into or with any  other  corporation,  or the  merger  of any other
corporation  into it, shall not be deemed to be a liquidation of the corporation
for the purpose of this Section IV.

         V. Any  shares of  Preferred  Stock  which  shall at any time have been
redeemed  or which shall at any time have been  surrendered  for  conversion  or
exchange  or  for  cancellation,  pursuant  to  any  sinking  or  purchase  fund
provisions with respect to any series of Preferred  Stock,  shall be retired and
shall  thereafter have the status of authorized and unissued shares of Preferred
Stock undesignated as to series.


                                        5





         VI. The  Common  Stock  shall have  exclusive  voting  power  except as
required by law and except to the extent the Board of  Directors  shall,  at the
time any series of Preferred Stock is established,  determine that the shares of
such  series  shall vote (i)  together  as a single  class with shares of Common
Stock  and/or  with  shares  of  Preferred  Stock (or one or more  other  series
thereof) on all or certain matters presented to the stockholders and/or upon the
occurrence  of any  specified  event or condition,  and/or (ii)  exclusively  on
certain  matters or, upon the occurrence of any specified even or condition,  on
all or certain  matters.  The Board of Directors,  in  establishing  a series of
Preferred  Stock and fixing the voting rights  thereof,  may determine  that the
voting power of each share of such series may be greater or less than the voting
power of each share of the Common Stock or of other  series of  Preferred  Stock
notwithstanding  that the shares of such series of Preferred Stock may vote as a
single class with the shares of other series of Preferred  Stock and/or with the
shares of Common Stock.

4.       If more  than one class is  authorized,  a  description  of each of the
         different  classes  of stock  with,  if any,  the  preferences,  voting
         powers, qualifications,  special or relative rights or privileges as to
         each class thereof and any series now established:

                              See Article 3 above.

5.       The restrictions,  if any, imposed by the articles of organization upon
         the transfer of shares of stock of any class are as follows:

                                      None.

6.       Other lawful  provisions for the conduct and regulation of the business
         and affairs of the corporation,  for its voluntary dissolution,  or for
         limiting,  defining, or regulating the powers of the corporation, or of
         its directors or  stockholders,  or of any class of stockholders are as
         follows:

6.1      The  directors  may make,  amend or repeal  the  by-laws in whole or in
         part,  except with respect to any provision thereof which by law or the
         by-laws requires action by the stockholders.

6.2      Meetings of the stockholders may be held anywhere in the United States.

6.3      Except as specifically authorized by statute, no stockholder shall have
         any right to  examine  any  property  or any books,  accounts  or other
         writings of the  corporation  if there is reasonable  ground for belief
         that such  examination  will for any reason be adverse to the interests
         of the  corporation,  and a vote of the  board  of  directors  refusing
         permission  to make such  examination  and  setting  forth  that in the
         opinion of the board of directors such examination  would be adverse to
         the  interests of the  corporation  shall be prima facie  evidence that
         such examination  would be adverse to the interests of the corporation.
         Every such examination shall be subject to such reasonable  regulations
         as the board of directors may establish in regard thereto.

                                       6





6.4      The board of directors  may specify the manner in which the accounts of
         the  corporation  shall be kept and may determine what  constitutes net
         earnings,  profits and surplus, what amounts, if any, shall be reserved
         for any corporate purpose,  and what amounts, if any, shall be declared
         as dividends.  Unless the board of directors otherwise  specifies,  the
         excess of the  consideration of any share of its capital stock with par
         value  issued by it over such par value shall be paid in  surplus.  All
         surplus  shall be available for any  corporate  purpose,  including the
         payment of dividends.

6.5      The  corporation  may  purchase or  otherwise  acquire,  hold,  sell or
         otherwise dispose of shares of its own capital stock, and such purchase
         or holding  shall not be deemed a reduction of its capital  stock.  The
         corporation  may reduce its capital  stock in any manner  authorized by
         law. Such reduction may be effected by the  cancellation and retirement
         of any  shares of  capital  stock  held by it.  Upon any  reduction  of
         capital or capital stock, no stockholder shall have any right to demand
         any distribution from the corporation, except as and to the extent that
         the stockholders shall so have provided at the time of authorizing such
         reduction.

6.6      Each director and officer of the corporation  shall, in the performance
         of his  duties,  be fully  protected  in relying in good faith upon the
         books of account of the corporation, reports made to the corporation by
         any of its officers or employees or by counsel, accountants, appraisers
         or other experts or consultants  selected with  reasonable  care by the
         directors, or upon other records of the corporation.

6.7      The  directors  shall  have the  power to fix from  time to time  their
         compensation.

6.8      The  corporation  may  enter  into  contracts  and  otherwise  transact
         business as vendor, purchaser or otherwise with its directors, officers
         and stockholders and with corporations,  joint stock companies, trusts,
         firms and associations in which they are or may be or become interested
         as directors, officers, shareholders,  members, trustees, beneficiaries
         or otherwise  as freely as though such  adverse  interest did not exist
         even though the vote,  action or presence of such director,  officer or
         stockholder  may be  necessary to obligate  the  corporation  upon such
         contract or transaction;  and no such contract or transaction  shall be
         avoided  and no such  director,  officer or  stockholder  shall be held
         liable to account to the  corporation or to any creditor or stockholder
         of the  corporation  for any profit or benefit  realized by him through
         any such contract or transaction by reason of such adverse interest nor
         by reason of any fiduciary  relationship  of such director,  officer or
         stockholder  to the  corporation  arising  out of such  office or stock
         ownership;  provided (in the case of directors  and officers but not in
         the case of any  stockholder  who is not a  director  or officer of the
         corporation)  the nature of the  interest of such  director or officer,
         though not necessarily  the details or extent  thereof,  be known by or
         disclosed  to the  directors.  Ownership  of  beneficial  interest in a
         minority of the stock or securities of another corporation, joint stock
         company,  trust,  firm or association shall not be deemed to constitute
         an  interest  adverse to this  corporation  in such other  corporation,
         joint stock company, trust, firm or association and need

                                        7





         not be  disclosed.  A general  notice that a director or officer of the
         corporation  is interested  in any  corporation,  joint stock  company,
         trust, firm or association shall be a sufficient  disclosure as to such
         director or officer with respect to all contracts and transactions with
         that corporation,  joint stock company, trust, firm, or association. In
         any  event the  authorizing  or  ratifying  vote of a  majority  of the
         capital  stock of the  corporation  outstanding  and  entitled  to vote
         passed  at a  meeting  duly  called  and  held for the  purposes  shall
         validate any such contract or transaction  as against all  stockholders
         of the corporation,  whether of record or not at the time of such vote,
         and  as  against  all   creditors  and  other   claimants,   under  the
         corporation,  and no contract or transaction shall be avoided by reason
         of any provision of this  paragraph  which would be valid but for these
         provisions.

6.9      The terms  and  conditions  upon  which a sale or  exchange  of all the
         property and assets, including the good will of the corporation, or any
         part thereof,  is voted may include the payment therefor in whole or in
         part in shares,  notes,  bonds or other  certificates  of  interest  or
         indebtedness of any voluntary  association,  trust, joint stock company
         or  corporation.  Such vote or a subsequent vote may in the event of or
         in  contemplation of proceedings for the dissolution of the corporation
         also  provide,  subject  to  the  rights  of  creditors  and  preferred
         stockholders,  for the  distribution pro rata among the stockholders of
         the corporation,  of the proceeds of any such sale or exchange, whether
         such proceeds be in cash or in securities as aforesaid (at values to be
         determined by the board of directors).

6.10     No  director  of this  corporation  shall be  personally  liable to the
         corporation  or its  stockholders  for  monetary  damages for breach of
         fiduciary  duty as a  director  notwithstanding  any  provision  of law
         imposing such liability; provided, however, that this Article shall not
         eliminate  or limit any  liability  of a director (i) for any breach of
         the director's duty of loyalty to the corporation or its  stockholders,
         (ii)  for  acts  or  omissions  not in  good  faith  or  which  involve
         intentional  misconduct  or a knowing  violation  of law,  (iii)  under
         Sections 61 or 62 of the  Massachusetts  Business  Corporation  Law, or
         (iv) with respect to any transaction from which the director derived an
         improper personal benefit.

         No  amendment  or repeal of this  Article  shall  adversely  affect the
rights and  protection  afforded  to a director of this  corporation  under this
Article for acts or omissions occurring while this Article is in effect.

- ------------------------------------------------------------------------------

         We further certify that the foregoing restated articles of organization
effect no  amendments  to the articles of  organization  of the  corporation  as
heretofore amended, except amendments to the following articles:

                  None




                                        8





IN WITNESS WHEREOF AND UNDER THE PENALTIES OF PERJURY, we have hereto signed our
names this 9th day of December in the year 1987.


/s/ David B. Perini, President
- ------------------------------


/s/ Patricia A. Kelly, Clerk
- ----------------------------

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS


                        RESTATED ARTICLES OF ORGANIZATION
                    (General Laws, Chapter 156B, Section 74)

                           I hereby  approve  the within  restated  articles  of
                           organization  and,  the  filing  fee in the amount of
                           $150.00 having been paid, said articles are deemed to
                           have  been  filed  with me this  8th day of  January,
                           1988.

                                                 /s/ Michael J. Connolly
                                                 MICHAEL JOSEPH CONNOLLY
                                                 Secretary of State


                           TO BE FILLED IN BY CORPORATION


                           Photocopy of Restated  Articles of Organization to be
                           sent to:

                                    CT Corporation System
                                    2 Oliver Street
                                    Boston, Massachusetts 02109
                                    Telephone:  (617) 482-4420

- --------------------------------------------------------------------------------


                        The Commonwealth of Massachusetts

                             Michael Joseph Connolly
                               Secretary of State
                    One Ashburton Place, Boston, Mass. 02108

                                        9





                      Federal Identification No. 04-1717070

                              ARTICLES OF AMENDMENT
                     General Laws, Chapter 156B, Section 72


We, James M. Markert,  Vice  President  and Robert E.  Higgins,  Clerk of Perini
Corporation located at 73 Mt. Wayte Avenue,  Framingham,  Massachusetts 01701 do
hereby certify that these ARTICLES OF AMENDMENT affecting Articles NUMBERED 3 of
the  Articles of  Organization  were duly  adopted at a meeting  held on May 19,
1994,  by vote of  3,207,986  shares of Common  Stock  out of  4,330,807  shares
outstanding being at least a majority of each type, class or series  outstanding
and entitled to vote thereon:

TO CHANGE the number of shares and the par value (if any) of any type,  class or
series of stock  which  the  corporation  is  authorized  to issue,  fill in the
following:

The total presently authorized is:

  WITHOUT PAR VALUE STOCKS                 WITH PAR VALUE STOCKS

TYPE        NUMBER OF SHARES   TYPE        NUMBER OF SHARES         PAR VALUE
Common:                        Common            7,500,000          $1.00
Preferred:                     Preferred         1,000,000          $1.00

CHANGE the total authorized to:

  WITHOUT PAR VALUE STOCKS                 WITH PAR VALUE STOCKS
TYPE        NUMBER OF SHARES   TYPE        NUMBER OF SHARES         PAR VALUE

Common                         Common           15,000,000          $1.00
Preferred                      Preferred         1,000,000          $1.00

The foregoing  amendment will become  effective when these articles of amendment
are filed in accordance with Chapter 156B,  Section 6 of The General Laws unless
these articles  specify,  in accordance with the vote adopting the amendment,  a
later effective date not more than thirty days after such filing, in which event
the amendment will become effective on such later date.
EFFECTIVE DATE: ___________

IN WITNESS  WHEREOF AND UNDER THE PENALTIES OF PERJURY,  we have hereunto signed
our names this 27th day of June in the year 1994.


/s/ James M. Markert, Vice President
- ------------------------------------



                                       10





/s/ Robert E. Higgins, Clerk
- ----------------------------

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS


                              ARTICLES OF AMENDMENT
                     General Laws, Chapter 156B, Section 72

                           I hereby  approve the within  articles  of  amendment
                           and, the filing fee in the amount of $7,500.00 having
                           been  paid,  said  articles  are  deemed to have been
                           filed with me this 7th day of July, 1994.


                                               /s/Michael Joseph Connolly
                                               MICHAEL J. CONNOLLY
                                               Secretary of State

                           TO BE FILLED IN BY CORPORATION

                           Photocopy of Articles of Amendment to be sent

                           To:

                           Matthew C. Lau, Esq.
                           Jacobs Persinger & Parker
                           77 Water Street, New York, NY 10005
                           Tel:  (212) 344-1866

- --------------------------------------------------------------------------------

                        The Commonwealth of Massachusetts

                             Michael Joseph Connolly
                               Secretary of State
                    One Ashburton Place, Boston, Mass. 02108

                      Federal Identification No. 04-1717070


                  CERTIFICATE OF VOTE OF DIRECTORS ESTABLISHING
                          A SERIES OF A CLASS OF STOCK


                                       11





                     General Laws, Chapter 156B, Section 26



         We, David B. Perini,  President and Patricia A. Kelly,  Clerk of Perini
Corporation located at 73 Mt. Wayte Avenue,  Framingham,  Massachusetts 01701 do
hereby  certify that at a meeting of the  directors of the  corporation  held on
September 23, 1988, the following vote  establishing and designating a series of
a class of stock and determining the relative rights and preferences thereof was
duly adopted:

         See continuation sheets attached.

         VOTED:  That pursuant to the authority vested in the Board of Directors
of this  Corporation  in  accordance  with the  provisions  of its  Articles  of
Organization,  a series of Preferred  Stock of the Corporation is hereby created
and that the designation  and amount thereof and the voting powers,  preferences
and relative, participating,  optional and other special rights of the shares of
such series, and the qualifications,  limitations or restrictions thereof are as
follows:

         Section 1.  Designation and Amount.  The shares of such series shall be
designated as "Series A Junior  Participating  Cumulative  Preferred Stock" (the
"Series A Preferred Stock"),  and the number of shares  constituting such series
shall be 200,000.

         Section 2.  Dividends and Distributions.

         (A) (i) The  holders  of shares of Series A  Preferred  Stock  shall be
entitled to receive,  when,  as and if declared by the Board of Directors out of
funds legally available for the purpose,  quarterly dividends payable in cash on
the first day of March,  June,  September  and  December in each year (each such
date  being  referred  to  herein  as  a  "Quarterly  Dividend  Payment  Date"),
commencing on the first Quarterly Dividend Payment Date after the first issuance
of a share or fraction of a share of Series A Preferred  Stock, in an amount per
share  (rounded to the  nearest  cent) equal to the greater of (a) $20.00 or (b)
subject to the provision for  adjustment  hereinafter  set forth,  100 times the
aggregate  per share amount of all cash  dividends,  and 100 times the aggregate
per  share  amount  (payable  in  kind)  of  all  non-cash  dividends  or  other
distributions  other  than a  dividend  payable  in shares of Common  Stock or a
subdivision of the outstanding  shares of Common Stock (by  reclassification  or
otherwise),  declared on the Common  Stock,  par value  $1.00 per share,  of the
Corporation  (the "Common  Stock")  since the  immediately  preceding  Quarterly
Dividend Payment Date, or, with respect to the first Quarterly  Dividend Payment
Date,  since the first  issuance of any share or fraction of a share of Series A
Preferred  Stock.  The multiple of cash and non-cash  dividends  declared on the
Common  Stock to which  holders of the Series A  Preferred  Stock are  entitled,
which shall be 100  initially  but which shall be adjusted  from time to time as
hereinafter provided, is hereinafter referred to as the "Dividend Multiple".  In
the  event the  Corporation  shall at any time  after  September  23,  1988 (the
"Rights Declaration Date") declare or pay any dividend on

                                       12





Common  Stock  payable in shares of Common  Stock,  or effect a  subdivision  or
combination  or  consolidation  of the  outstanding  shares of Common  Stock (by
reclassification  or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common  Stock,  then in each
such case the Dividend  Multiple  thereafter  applicable to the determination of
the amount of  dividends  which  holders of shares of Series A  Preferred  Stock
shall  be  entitled  to  receive  shall  be  the  Dividend  Multiple  applicable
immediately prior to such event multiplied by a fraction, the numerator of which
is the number of shares of Common Stock outstanding immediately after such event
and the  denominator  of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                  (ii) Notwithstanding anything else contained in this paragraph
(A), the  Corporation  shall,  out of funds legally  available for that purpose,
declare a dividend or  distribution  on the Series A Preferred Stock as provided
in this paragraph (A)  immediately  after it declares a dividend or distribution
on the Common Stock (other than a dividend  payable in shares of Common  Stock);
provided that, in the event no dividend or distribution shall have been declared
on the Common Stock during the period  between any  Quarterly  Dividend  Payment
Date and the next  subsequent  Quarterly  Dividend  Payment  Date, a dividend of
$20.00 per share on the Series A Preferred Stock shall  nevertheless be paid out
of funds legally available for the purpose on such subsequent Quarterly Dividend
Payment Date.

         (B) Dividends  shall begin to accrue and be  cumulative on  outstanding
shares of Series A Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares of Series A Preferred  Stock,  unless
the date of issue of such  shares  is  prior to the  record  date for the  first
Quarterly  Dividend  Payment Date, in which case  dividends on such shares shall
begin to accrue  from the date of issue of such  shares,  or unless  the date of
issue is a Quarterly  Dividend  Payment  Date or is a date after the record date
for the  determination of holders of shares of Series A Preferred Stock entitled
to receive a quarterly dividend and before such Quarterly Dividend Payment Date,
in either of which events such dividends shall begin to accrue and be cumulative
from such Quarterly  Dividend  Payment Date.  Accrued but unpaid dividends shall
not bear interest.  Dividends paid on the shares of Series A Preferred  Stock in
an amount less than the total  amount of such  dividends at the time accrued and
payable on such shares shall be  allocated  pro rata on a  share-by-share  basis
among all such shares at the time outstanding.  The Board of Directors may fix a
record  date for the  determination  of holders of shares of Series A  Preferred
Stock  entitled  to  receive  payment  of a dividend  or  distribution  declared
thereon, which record date shall be no more than 60 days prior to the date fixed
for the payment thereof.

         Section 3.  Voting  Rights.  In  addition  to any other  voting  rights
required by law,  the  holders of shares of Series A Preferred  Stock shall have
the following voting rights:

         (A) Subject to the provision for adjustment hereinafter set forth, each
share of Series A Preferred  Stock shall entitle the holder thereof to 100 votes
on all matters  submitted to a vote of the stockholders of the Corporation.  The
number  of votes  which a  holder  of a share of  Series  A  Preferred  Stock is
entitled to cast, as the same may be adjusted from time to

                                       13





time as hereinafter provided, is hereinafter referred to as the "Vote Multiple".
In the event the Corporation shall at any time after the Rights Declaration Date
(i) declare any dividend on Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding  Common Stock, or (iii) combine the outstanding Common
Stock into a smaller number of shares,  then in each such case the Vote Multiple
thereafter  applicable to the  determination of the number of votes per share to
which holders of shares of Series A Preferred  Stock shall be entitled  shall be
the Vote Multiple  immediately  prior to such event multiplied by a fraction the
numerator  of  which  is the  number  of  shares  of  Common  Stock  outstanding
immediately  after  such  event and the  denominator  of which is the  number of
shares of Common Stock that were outstanding immediately prior to such event.

         (B)  Except as  otherwise  provided  herein or by law,  the  holders of
shares of Series A  Preferred  Stock and the  holders of shares of Common  Stock
shall  vote  together  as  one  class  on all  matters  submitted  to a vote  of
stockholders of the Corporation.

         (C) (i) If at any time dividends on any Series A Preferred  Stock shall
be in arrears in an amount equal to six (6)  quarterly  dividends  thereon,  the
occurrence  of such  contingency  shall mark the  beginning of a period  (herein
called a "default  period")  which shall extend until such time when all accrued
and unpaid  dividends for all previous  quarterly  dividend  periods and for the
current quarterly dividend period on all shares of Series A Preferred Stock then
outstanding  shall have been declared and paid or set apart for payment.  During
each default period,  the holders of the Series A Preferred Stock shall have the
right to elect two (2) Directors.

                  (ii)  During any  default  period,  such  voting  right of the
holders of Series A  Preferred  stock may be  exercised  initially  at a special
meeting  called  pursuant to  subparagraph  (iii) of this Section 3(C) or at any
annual  meeting  of   stockholders,   and  thereafter  at  annual   meetings  of
stockholders,  provided that such voting right shall not be exercised unless the
holders of ten  percent  (10%) in number of shares of Series A  Preferred  Stock
outstanding  shall be present in person or by proxy.  The absence of a quorum of
the  holders of Common  Stock  shall not affect the  exercise  by the holders of
Series A  Preferred  Stock of such  voting  right.  At any  meeting at which the
holders of Series A Preferred  Stock shall exercise such voting right  initially
during an existing default period, they shall have the right, voting as a class,
to elect Directors to fill such vacancies,  if any, in the Board of Directors as
may then  exist up to two (2)  Directors  or, if such right is  exercised  at an
annual  meeting,  to elect  two (2)  Directors.  If the  number  which may be so
elected at any  special  meeting  does not amount to the  required  number,  the
holders  of the  Series A  Preferred  Stock  shall  have the  right to make such
increase in the number of Directors as shall be necessary to permit the election
by them of the required number.

                  (iii)  Unless the holders of Series A Preferred  Stock  shall,
during an existing  default  period,  have  previously  exercised their right to
elect  Directors,  the Board of  Directors  may  order,  or any  stockholder  or
stockholders  owning in the  aggregate  not less than ten  percent  (10%) of the
total number of shares of Series A Preferred Stock outstanding may

                                       14





request,  the calling of a special  meeting of the holders of Series A Preferred
Stock,  which  meeting  shall  thereupon  be  called  by the  President,  a Vice
President  or the Clerk of the  Corporation.  Notice of such  meeting and of any
annual meeting at which holders of Series A Preferred Stock are entitled to vote
pursuant to this  paragraph  (C)(iii) shall be given to each holder of record of
Series A  Preferred  Stock by  mailing a copy of such  notice to him at his last
address as the same appears on the books of the Corporation.  Such meeting shall
be called for a time not  earlier  than 20 days and not later than 60 days after
such order or request  or, in default of the calling of such  meeting  within 60
days after such order or request,  such meeting may be called on similar  notice
by any  stockholder  or  stockholders  owning in the aggregate not less than ten
percent  (10%) of the  total  number  of  shares  of  Series A  Preferred  Stock
outstanding.  Notwithstanding the provisions of this paragraph (C)(iii), no such
special  meeting shall be called  during the period  within 60 days  immediately
preceding the date fixed for the next annual meeting of the stockholders.

                  (iv) In any default period,  the holders of Common Stock,  and
other classes of stock of the  Corporation if  applicable,  shall continue to be
entitled to elect the whole  number of  Directors  until the holders of Series A
Preferred  Stock shall have  exercised  their  right to elect two (2)  Directors
voting as a class,  after the  exercise  of which  right  (x) the  Directors  so
elected by the  holders of Series A  Preferred  Stock  shall  continue in office
until  their  successors  shall have been  elected by such  holders or until the
expiration of the default period,  and (y) any vacancy in the Board of Directors
may  (except as provided in  paragraph  (C)(ii) of this  Section 3) be filled by
vote of a majority of the remaining Directors theretofore elected by the holders
of the class of stock which elected the Director  whose office shall have become
vacant.  References in this paragraph (C) to Directors elected by the holders of
a particular class of stock shall include Directors elected by such Directors to
fill vacancies as provided in clause (y) of the foregoing sentence.

                  (v) Immediately  upon the expiration of a default period,  (x)
the right of the holders of Series A Preferred  Stock to elect  Directors  shall
cease,  (y) the  term of any  Directors  elected  by the  holders  of  Series  A
Preferred  Stock as a class  shall  terminate,  and (z) the number of  Directors
shall be such number as may be provided for in the Articles of  Organization  or
by-laws  irrespective  of  any  increase  made  pursuant  to the  provisions  of
paragraph  (C)(ii) of this  Section 3 (such number being  subject,  however,  to
change  thereafter  in  any  manner  provided  by  law  or in  the  Articles  of
Organization  or by-laws).  Any vacancies in the Board of Directors  effected by
the provisions of clauses (y) and (z) in the preceding sentence may be filled by
a majority of the remaining Directors.

         (D) Except as  otherwise  required  by  applicable  law or as set forth
herein,  holders of Series A Preferred Stock shall have no special voting rights
and their consent shall not be required  (except to the extent they are entitled
to vote  with  holders  of Common  Stock as set forth  herein)  for  taking  any
corporate action.


                                                        15





         Section 4.  Certain Restrictions.

         (A) Whenever  quarterly  dividends or other dividends or  distributions
payable on the Series A Preferred Stock as provided in Section 2 are in arrears,
thereafter and until all accrued and unpaid dividends and distributions, whether
or not declared,  on shares of Series A Preferred Stock  outstanding  shall have
been paid in full, the Corporation shall not:

                  (i)      declare  or  pay   dividends   on,   make  any  other
                           distributions  on, or redeem or purchase or otherwise
                           acquire for consideration any shares of stock ranking
                           junior  (either as to dividends or upon  liquidation,
                           dissolution  or winding up) to the Series A Preferred
                           Stock;

                  (ii)     declare  or  pay  dividends  on  or  make  any  other
                           distributions  on any  shares of stock  ranking  on a
                           parity  (either as to dividends or upon  liquidation,
                           dissolution   or  winding   up)  with  the  Series  A
                           Preferred Stock, except dividends paid ratably on the
                           Series A Preferred Stock and all such parity stock on
                           which   dividends   are  payable  or  in  arrears  in
                           proportion  to the total amounts to which the holders
                           of all such shares are then entitled;

                  (iii)    redeem  or   purchase   or   otherwise   acquire  for
                           consideration shares of any stock ranking on a parity
                           (either  as  to   dividends   or  upon   liquidation,
                           dissolution   or  winding   up)  with  the  Series  A
                           Preferred Stock, provided that the Corporation may at
                           any time redeem, purchase or otherwise acquire shares
                           of any such parity  stock in  exchange  for shares of
                           any stock of the  Corporation  ranking junior (either
                           as to dividends or upon  dissolution,  liquidation or
                           winding up) to the Series A Preferred Stock; or

                  (iv)     purchase or otherwise  acquire for  consideration any
                           shares of Series A Preferred  Stock, or any shares of
                           stock ranking on a parity with the Series A Preferred
                           Stock,  except in  accordance  with a purchase  offer
                           made in writing or by  publication  (as determined by
                           the Board of Directors) to all holders of such shares
                           upon  such  terms as the  Board of  Directors,  after
                           consideration of the respective annual dividend rates
                           and other  relative  rights  and  preferences  of the
                           respective  series and  classes,  shall  determine in
                           good  faith  will   result  in  fair  and   equitable
                           treatment among the respective series or classes.

         (B) The Corporation  shall not permit any subsidiary of the Corporation
to purchase or otherwise  acquire for  consideration  any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.


                                       16





         Section 5.  Reacquired  Shares.  Any shares of Series A Preferred Stock
purchased  or otherwise  acquired by the  Corporation  in any manner  whatsoever
shall be retired and cancelled promptly after the acquisition  thereof. All such
shares shall upon their  cancellation  become  authorized but unissued shares of
Preferred  Stock and may be reissued as part of a new series of Preferred  Stock
to be created by resolution or resolutions of the Board of Directors, subject to
the conditions and restrictions on issuance set forth herein.

         Section 6.  Liquidation,  Dissolution or Winding Up. Upon any voluntary
liquidation, dissolution or winding up of the Corporation, no distribution shall
be made (x) to the  holders  of shares of stock  ranking  junior  (either  as to
dividends  or upon  liquidation,  dissolution  or  winding  up) to the  Series A
Preferred  Stock  unless,  prior  thereto,  the  holders  of  shares of Series A
Preferred  Stock  shall have  received  an amount  equal to  accrued  and unpaid
dividends and  distributions  thereon,  whether or not declared,  to the date of
such payment, plus an amount equal to the greater of (1) $10,000.00 per share or
(2) an  aggregate  amount per share,  subject to the  provision  for  adjustment
hereinafter set forth, equal to 100 times the aggregate amount to be distributed
per share to holders of Common  Stock,  or (y) to the holders of any other class
or  series  of  stock  ranking  on a  parity  (either  as to  dividends  or upon
liquidation,  dissolution  or  winding  up) with the Series A  Preferred  Stock,
except  distributions made ratably on the Series A Preferred Stock and all other
such parity stock in proportion to the total amounts to which the holders of all
such shares are entitled upon such  liquidation,  dissolution  or winding up. In
the event the  Corporation  shall at any time  declare  or pay any  dividend  on
Common  Stock  payable in shares of Common  Stock,  or effect a  subdivision  or
combination  or  consolidation  of the  outstanding  shares of Common  Stock (by
reclassification  or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common  Stock,  then in each
such case the aggregate  amount to which holders of shares of Series A Preferred
Stock were entitled  immediately prior to such event under the proviso in clause
(x) of the preceding  sentence shall be adjusted by multiplying such amount by a
fraction  the  numerator  of which is the  number  of  shares  of  Common  Stock
outstanding  immediately  after such event and the  denominator  of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

         Neither the  consolidation  of nor merging of the  Corporation  with or
into any other  corporation or  corporations,  nor the sale or other transfer of
all or substantially all of the assets of the Corporation, shall be deemed to be
a liquidation,  dissolution or winding up of the Corporation  within the meaning
of this Section 6.

         Section 7.  Consolidation,  Merger,  etc. In case the Corporation shall
enter into any consolidation,  merger, combination or other transaction in which
the shares of Common  Stock are  exchanged  for or changed  into other  stock or
securities,  cash or any other  property,  then in any such  case the  shares of
Series A  Preferred  Stock  shall at the same  time be  similarly  exchanged  or
changed  into an amount  per share  (subject  to the  provision  for  adjustment
hereinafter  set  forth)  equal to 100  times  the  aggregate  amount  of stock,
securities,  cash or any other property  (payable in kind),  as the case may be,
into which or for which each share of Common Stock is changed or exchanged, plus
accrued and unpaid dividends, if any, payable

                                       17





with respect to the Series A Preferred Stock. In the event the Corporation shall
at any time  declare or pay any  dividend on Common  Stock  payable in shares of
Common Stock,  or effect a subdivision or combination  or  consolidation  of the
outstanding  shares of Common Stock (by  reclassification  or otherwise  than by
payment of a dividend in shares of Common Stock) into a greater or lesser number
of shares of Common  Stock,  then in each such case the  amount set forth in the
preceding  sentence with respect to the exchange or change of shares of Series A
Preferred  Stock shall be adjusted by multiplying  such amount by a fraction the
numerator  of  which  is the  number  of  shares  of  Common  Stock  outstanding
immediately  after  such  event and the  denominator  of which is the  number of
shares of Common Stock that were outstanding immediately prior to such event.

         Section 8.  Redemption.

         (A) For  purposes  of this  Section  8, the  following  terms  have the
meanings indicated:

                  (i) "Acquiring  Person" shall mean any Person (as such term is
hereinafter defined) who or which, together with all Affiliates (as such term is
hereinafter  defined) and Associates  (as such term is  hereinafter  defined) of
such Person, shall be the Beneficial Owner (as such term is hereinafter defined)
of 20% or more of the  shares of Common  Stock then  outstanding,  but shall not
include the Corporation, any subsidiary of the Corporation, any employee benefit
plan of the  Corporation or any subsidiary  thereof or any entity holding shares
of Common Stock  organized,  appointed or established by the  Corporation or any
subsidiary thereof for or pursuant to the terms of any such plan.

                  (ii)  "Affiliate"  and  "Associate"  shall have the respective
meanings  ascribed  to such  terms  in  Rule  12b-2  of the  General  Rules  and
Regulations under the Securities Exchange Act of 1934, as amended (the "Exchange
Act").

                  (iii) A Person shall be deemed the "Beneficial  Owner" of, and
shall be deemed to "beneficially own," any securities:

                           (a)  which  such  Person  or  any  of  such  Person's
         Affiliates or Associates  beneficially owns, directly or indirectly (as
         determined  pursuant to Rule 13d-3 of the General Rules and Regulations
         under the Exchange Act) or has the right to dispose of;

                           (b)  which  such  Person  or  any  of  such  Person's
         Affiliates  or  Associates  has (A) the right to acquire  (whether such
         right is exercisable immediately or after the passage of time) pursuant
         to any  agreement,  arrangement  or  understanding  (whether  or not in
         writing) or upon the exercise of conversion  rights,  exchange  rights,
         rights (other than rights initially  exercisable for Series A Preferred
         Stock),  warrants or options, or otherwise;  provided,  however, that a
         Person  shall  not  be  deemed  the   "Beneficial   Owner"  of,  or  to
         "beneficially  own,"  securities  tendered  pursuant  to  a  tender  or
         exchange  offer made by such Person or any of such Person's  Affiliates
         or

                                       18





         Associates until such tendered  securities are accepted for purchase or
         exchange;  or  (B)  the  right  to  vote  pursuant  to  any  agreement,
         arrangement  or  understanding  (whether or not in writing);  provided,
         however,  that a Person shall not be deemed the "Beneficial  Owner" of,
         or to  "beneficially  own," any  security  under this clause (B) if the
         agreement,  arrangement  or  understanding  to vote such  security  (1)
         arises  solely  from a  revocable  proxy  given in response to a public
         proxy or consent solicitation made pursuant to, and in accordance with,
         the applicable rules and regulations of the Exchange Act and (2) is not
         also then  reportable by such person on Schedule 13D under the Exchange
         Act (or any comparable or successor report); or

         (c) which are beneficially owned, directly or indirectly,  by any other
         Person (or any  Affiliate or Associate  thereof) with which such Person
         or any of such Person's  Affiliates or  Associates  has any  agreement,
         arrangement  or  understanding  (whether  or not in  writing),  for the
         purpose of acquiring,  holding,  voting (except pursuant to a revocable
         proxy as described in clause (B) of subparagraph  (b) of this paragraph
         (iii)) or disposing of any securities of the Corporation.

                  (iv) "Disinterested Director" shall mean (A) any member of the
Corporation's  Board of  Directors  who is not an  officer  or  employee  of the
Corporation or any of its  subsidiaries and who is not an Acquiring Person or an
Affiliate  or an  Associate  of an  Acquiring  Person or nominee of an Acquiring
Person or any such Affiliate or Associate and was a member of the  Corporation's
Board of Directors prior to the Rights  Declaration Date, and (B) any Person who
subsequently  becomes a member of the Company's Board of Directors who is not an
Acquiring  Person or an Affiliate  or an  Associate  of an  Acquiring  Person or
nominee of an  Acquiring  Person or any such  Affiliate  or  Associate,  if such
Person's   nomination  is   recommended   or  approved  by  a  majority  of  the
Disinterested Directors.

                  (v)      "Person" shall mean any individual, firm, corporation
, partnership or other entity.

         (B)  Subject  to Section 4 hereof,  the  Corporation  may,  at any time
(unless otherwise prevented by law) by the affirmative vote of a majority of the
directors  then in  office,  including,  if at the time of such vote there is an
Acquiring Person, a majority of the Disinterested  Directors,  redeem all or any
portion of the Series A Preferred Stock then  outstanding.  The amount per share
of Series A Preferred  Stock to be redeemed to be paid upon any such  redemption
shall be equal to $10,000.00 plus accrued and unpaid dividends,  if any, payable
with  respect  thereto.  The total sum  payable  per share of Series A Preferred
Stock on the date on which  the  Corporation  redeems  any  shares  of  Series A
Preferred  Stock  (the  "Redemption  Date") is  hereinafter  referred  to as the
"Redemption Price."

         (C) If less than all of the  outstanding  shares of Series A  Preferred
Stock are to be redeemed, the Corporation shall select the shares to be redeemed
by lot.  Notice  of  redemption  pursuant  to this  Section  8 shall  be sent by
first-class  mail,  postage  prepaid,  to the holders of record of the shares of
Series A Preferred Stock to be redeemed at their respective addresses

                                       19





as the same shall appear on the books of the  Corporation.  Such notice shall be
mailed  not less  than 30 nor more  than 60 days in  advance  of the  applicable
Redemption Date and shall specify the Redemption  Date, the Redemption Price and
the place at which payment may be obtained as to such shares.  At any time on or
after the Redemption Date applicable thereto, the holders of record of shares of
Series A  Preferred  Stock  to be  redeemed  on such  Redemption  Date  shall be
entitled to receive the Redemption  Price  therefor upon actual  delivery to the
Corporation  or its  agent of the  certificates  representing  the  shares to be
redeemed.

         If such notice of redemption  shall have been duly given,  and if on or
before any Redemption Date the funds necessary for such redemption  (taking into
account any  conversions)  shall have been deposited by the  Corporation  with a
bank or trust company  designated  by the Board of Directors and having  capital
and  surplus of at least  $50,000,000  in trust for the pro rata  benefit of the
holders of the  shares of Series A  Preferred  Stock so called  for  redemption,
then,  notwithstanding  that any  certificate  for shares of Series A  Preferred
Stock so called for redemption shall not have been surrendered for cancellation,
from and after such  Redemption  Date (unless there shall have been a default in
payment  of the  Redemption  Price) all  shares of Series A  Preferred  Stock so
called for redemption shall no longer be deemed to be outstanding and all rights
with respect to such shares shall forthwith cease and terminate, except only the
right of the holders  thereof to receive  from such bank or trust  company  upon
surrender of their  certificate  or  certificates  at any time after the time of
such deposit the funds so deposited,  without interest. The balance of any funds
so  deposited  and  unclaimed at the end of one year from such  Redemption  Date
shall be released or repaid to the  Corporation,  after which the holders of the
shares so called for redemption  shall look only to the  Corporation for payment
thereof, without interest.

         Section 9.  Ranking.  Unless  otherwise  provided  in the  Articles  of
Organization   of  the  Corporation  or  a  Certificate  of  Vote  of  Directors
Establishing  a Class of Stock relating to a  subsequently-designated  series of
Preferred  Stock of the  Corporation,  the Series A  Preferred  Stock shall rank
junior to the Corporation's $21.25 Convertible  Exchangeable Preferred Stock and
any other  series of the  Corporation's  Preferred  Stock,  as to the payment of
dividends and the distribution of assets on liquidation,  dissolution or winding
up and shall rank senior to the Common Stock.

         Section 10. Amendment.  The Articles of Organization of the Corporation
and this  Certificate  of Vote shall not be amended  in any manner  which  would
materially  alter or change the  powers,  preferences  or special  rights of the
Series A Preferred  Stock so as to affect them adversely  (within the meaning of
Section  77 of Chapter  156B of the  Massachusetts  General  Laws)  without  the
affirmative vote of the holders of two-thirds or more of the outstanding  shares
of Series A Preferred Stock, voting separately as a class.

         Section 11. Fractional  Shares.  Series A Preferred Stock may be issued
in fractions of a share which shall  entitle the holder,  in  proportion to such
holder's  fractional  shares,  to exercise  voting  rights,  receive  dividends,
participate  in  distributions  and to have the  benefit of all other  rights of
holders of Series A Preferred Stock.

                                       20





IN WITNESS WHEREOF AND UNDER THE PENALTIES OF PERJURY, we have hereto signed our
names this 23rd day of September in the year 1988.


/s/ David B. Perini, President
- ------------------------------


/s/ Patricia A. Kelly, Clerk
- ----------------------------

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS

                        Certificate of Vote of Directors
                    Establishing a Series of a Class of Stock

                    (General Laws, Chapter 156B, Section 26)


                           I hereby  approve  the within  certificate  and,  the
                           filing fee in the amount of $75.00  having been paid,
                           said  certificate  is hereby  filed  this 27th day of
                           September, 1988.


                                            /s/ Michael J. Connolly
                                            MICHAEL JOSEPH CONNOLLY
                                            Secretary of State


                           TO BE FILLED IN BY CORPORATION

                           Photo copy of Certificate to be sent

                           To:

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS
                             William Francis Galvin
                          Secretary of the Commonwealth
              One Ashburton Place, Boston, Massachusetts 02108-1512

                      Federal Identification No. 04-1717070

                            CERTIFICATE OF CORRECTION

                                       21





                    (General Laws, Chapter 156B, Section 6A)

1.       Exact name of corporation:         Perini Corporation

2.       Document to be corrected:          Restated Articles of Organization

3.       The  above-mentioned  document  was  filed  with the  Secretary  of the
         Commonwealth on January 8, 1988.

4.       Please state the inaccuracy or defect in said document:

         Article 4 of Exhibit A to the Restated Articles of Organization omitted
         a description of a series of preferred  stock (the "$21.25  Convertible
         Exchangeable  Preferred Stock"), which was established by a Certificate
         of Vote of Directors filed with the Secretary on June 19, 1987.

5.       Please state corrected version of the document:

         The  corrected  Article 4 of  Exhibit  A to the  Restated  Articles  of
         Organization,   including  a  description  of  the  $21.25  Convertible
         Exchangeable Preferred Stock, is attached hereto as Attachment A.


SIGNED UNDER THE PENALTIES OF PERJURY, this 8th day of August, 1996.


/s/ David B. Perini, President
- ------------------------------


/s/ Richard E. Burnham, Clerk
- -----------------------------

                    Attachment A to Certificate of Correction

4.       If more  than one class is  authorized,  a  description  of each of the
         different  classes  of stock  with,  if any,  the  preferences,  voting
         powers, qualifications,  special or relative rights or privileges as to
         each class thereof and any series now established:

         See  Article  3  above;  annexed  to  this  Exhibit  as  Annex  4A is a
description  of the  preferences,  voting  powers,  qualifications,  special  or
relative  rights  or  privileges  as  to  the  $21.25  Convertible  Exchangeable
Preferred Stock.

                               


                                       22



                                    ANNEX 4A

         (1) Designation. The series of the Preferred Stock created herein shall
consist of One Hundred  Thousand  (100,000)  shares and shall be designated  the
"$21.25  Convertible  Exchangeable  Preferred Stock." Said series is hereinafter
called the  "Convertible  Exchangeable  Preferred  Stock."  The term  "Preferred
Stock" as used herein shall mean the Preferred Stock  authorized by the Restated
Articles of Organization,  as amended,  of the corporation and shall include the
Convertible Exchangeable Preferred Stock.

         (2) Dividends.  The holders of the Convertible  Exchangeable  Preferred
Stock shall be entitled to receive  cash  dividends  when and as declared by the
Board of Directors out of funds  legally  available  for such  purposes,  at the
annual rate of twenty-one  and one quarter  Dollars  ($21.25) per share,  and no
more,  payable  in  quarterly  installments  on the  15th  day of  March,  June,
September and December of each year (unless any such day is a non-business  day,
in which event the next  business day shall be the payment  date)  commencing on
September 15, 1987.  Dividends on the Convertible  Exchangeable  Preferred Stock
shall begin to accrue and shall be cumulative from the date of original issue of
such shares (the "Issue  Date") and shall be payable to the holders of record on
the  record  date  fixed with  respect  to such  payment.  The date on which the
corporation  initially  issues any share of Convertible  Exchangeable  Preferred
Stock shall be its date of issue  regardless  of the number of times of transfer
of such share is made on the stock records of the  corporation and regardless of
the  number  of  certificates  which  may be issued  to  evidence  such  shares.
Accumulations of dividends on the Convertible Exchangeable Preferred Stock shall
not bear  interest.  If at any time the  corporation  pays  less  than the total
amount of dividends  then accrued upon the  Convertible  Exchangeable  Preferred
Stock  and any  other  stock  ranking  on a  parity  as to  dividends  with  the
Convertible  Exchangeable  Preferred  Stock,  dividends  declared upon shares of
Convertible  Exchangeable Preferred Stock and such other stock shall be declared
pro rata so that in all cases the amount of dividends  declared per share on the
Convertible Exchangeable Preferred Stock and such other stock shall bear to each
other the same  ratio  that  accumulated  dividends  per share on the  shares of
Convertible  Exchangeable  Preferred  Stock and such  other  stock  bear to such
other.

         Dividends  payable  on  September  15,  1987  and  on the  date  on any
redemption of the  Convertible  Exchangeable  Preferred Stock not occurring on a
regular  dividend  payment date,  shall be calculated on the basis of the actual
number of days elapsed (including the date of redemption) over a 360-day year.

         Except as set  forth  above,  in no event  (so long as any  Convertible
Exchangeable  Preferred Stock shall remain outstanding) shall any cash dividends
whatsoever  be declared or paid upon,  nor shall any cash  distribution  be made
upon, the Common Stock, or any other stock of the corporation  ranking junior to
or on a parity with the Convertible Exchangeable Preferred Stock as to dividends
unless  full  cumulative  dividends  on all  outstanding  shares of  Convertible
Exchangeable  Preferred Stock for all dividend payment periods terminating on or
prior to the date of the  payment  of such  dividends  shall  have  been paid or
declared and funds therefor set apart for such payment.


                                       23





         (3) Voting Rights.  The holders of Convertible  Exchangeable  Preferred
Stock shall not, by virtue of their ownership thereof,  be entitled to vote upon
any matter except as provided by this Clause (3) or as required by law. Whenever
the holders of the Convertible Exchangeable Preferred Stock shall be entitled to
exercise  voting  rights,  each holder of record thereof shall have one vote for
each share so held.

         If the  equivalent  of  six  (6)  quarterly  dividends  payable  on the
Convertible  Exchangeable Preferred Stock is in arrears, the number of directors
of the  corporation  will be increased by two (2) and the holders of outstanding
Convertible  Exchangeable  Preferred  Stock  together  with the  holders  of any
outstanding  series of Preferred  Stock ranking on a parity with the Convertible
Exchangeable  Preferred  Stock as to dividends or  liquidation  rights and as to
which the  equivalent of six (6) quarterly  dividends is in arrears (but only if
the holders of the shares of such other series would  otherwise  have a right to
elect directors as a result of a dividend  arrearage),  voting as a single class
without regard to series, will be entitled to elect the additional two directors
at a special meeting called for that purpose as hereinafter  provided, or at any
annual meeting of stockholders. When such voting rights shall have vested in the
holders of the Convertible  Exchangeable  Preferred  Stock, a special meeting to
elect such directors may be called by the Chief Executive Officer or Chairman of
the Board of the  corporation  or by the holders of 25% or more of the shares of
Preferred  Stock  of  all  series  affected,  in  the  manner  provided  in  the
corporation's By-laws, or by law if no such provision is in effect. Whenever all
dividends in arrears have been paid or declared and funds therefor set apart for
payment,  the number of directors of the corporation shall be reduced by two (2)
and  such  additional  directors  elected  pursuant  to this  Clause  (3)  shall
forthwith cease to be directors and the contingent voting rights provided herein
for the election of two (2) directors  shall cease,  subject  always to the same
provisions  for the vesting of such  contingent  voting rights of the holders of
the Convertible  Exchangeable  Preferred Stock to elect two (2) directors in the
case of future dividend defaults.

         In  addition,  without the vote of the  holders of at least  two-thirds
(2/3) of the number of shares of Convertible  Exchangeable  Preferred Stock then
outstanding,  voting  together  as  a  class  with  the  holders  of  any  other
outstanding shares of Preferred Stock similarly affected,  the corporation shall
not (i) amend,  alter or repeal any of the  preferences or rights of the holders
of the Convertible  Exchangeable  Preferred Stock so as to adversely affect such
preferences  and rights,  or (ii) create any class of stock ranking prior to the
Convertible  Exchangeable  Preferred  Stock with  respect to dividends or to the
distribution of assets in liquidation.  Notwithstanding  the foregoing sentence,
without  the vote of a majority  of the shares of the  Convertible  Exchangeable
Preferred Stock then  outstanding,  voting as a class, the corporation shall not
create any class of stock ranking on a parity with the Convertible  Exchangeable
Preferred  Stock with respect to dividends or to the  distribution  of assets in
liquidation.

         (4)(A)  Optional  Redemption.  The shares of  Convertible  Exchangeable
Preferred Stock may be redeemed at the option of the corporation,  as a whole or
in part, at any time or from time to time, at the redemption  prices referred to
below,  provided that the  Convertible  Exchangeable  Preferred Stock may not be
redeemable prior to June 15, 1990 unless the

                                       24





Closing Price (as hereinafter defined) of the Common Stock shall have equaled or
exceeded  150% of the  conversion  price for at least  twenty (20)  trading days
within  thirty  (30)  consecutive  trading  days  ending  not more than five (5)
trading days prior to the date notice of  redemption  is given.  For purposes of
this  Clause (4),  "Closing  Price"  shall mean the closing  price of the Common
Stock on the principal national  securities  exchange on which such stock may be
listed or, if such stock is not then so listed,  the closing price of the Common
Stock as shown by the National Association of Securities Dealers,  Inc. National
Market  or,  if  no  such  closing  price  is  available,  the  average  of  the
representative   last  bid  and  asked  prices  of  such  Common  Stock  in  the
over-the-counter  market,  as shown by the National  Association  of  Securities
Dealers,  Inc. Automated  Quotation System Level I (or comparable  system).  The
redemption  price payable shall be the then applicable price per share specified
below in effect on the date fixed for  redemption  plus  dividends  accrued  and
unpaid on the shares to be redeemed, whether or not declared:

If redeemed during     Redemption      If redeemed during         Redemption
the 12-month period     Price Per      the 12-month period         Price Per
beginning June 15,        Share        beginning June 15,            Share

     1987                 271.250             1992                   260.625
     1988                 269.125             1993                   258.500
     1989                 267.000             1994                   256.375
     1990                 264.875             1995                   254.250
     1991                 262.750             1996                   252.125

and on or after  June 15,  1997 at the  redemption  price of Two  Hundred  Fifty
Dollars ($250) per share,  plus accrued and payable  dividends to the date fixed
for  redemption.  If full cumulative  dividends on the Convertible  Exchangeable
Preferred   Stock  have  not  been  paid  in  full,  no  shares  of  Convertible
Exchangeable  Preferred  Stock  may be  redeemed  and  the  corporation  may not
purchase or acquire any shares unless (i) the holders of two-thirds (2/3) of the
shares of the  Convertible  Exchangeable  Preferred  Stock shall have  consented
thereto,  or (ii) the  corporation  purchases  or  acquires  any  shares  of the
Convertible  Exchangeable  Preferred  Stock  pursuant  to a purchase or exchange
offer made on the same  terms to all  holders  of the  Convertible  Exchangeable
Preferred Stock.

         There is no  mandatory  redemption  or  sinking  fund  obligation  with
respect to the Convertible Exchangeable Preferred Stock.

                  (B)  Selection  for  Redemption.  If  less  than  all  of  the
outstanding  shares of the  Convertible  Exchangeable  Preferred Stock are to be
redeemed, the corporation will select the shares to be redeemed by lot, provided
that only whole shares shall be selected for redemption.

                  (C)      Redemption Procedure. Notices of any redemption shall
be mailed (i) not less than thirty (30) nor more than sixty   (60)  days   prior
to  the  date  fixed  for redemption to

                                       25





the  holders of shares of the  Convertible  Exchangeable  Preferred  Stock to be
redeemed at their respective  addresses as the same appear upon the books of the
corporation;  provided, however, that no defect in the mailing of such notice to
a holder shall affect its sufficiency with respect to other holders.  Payment of
the  redemption  price of the  shares  redeemed  shall be made at such  place or
places of  redemption  as shall be  determined  by the Board of Directors of the
corporation and shall be specified in the notice of redemption and shall be made
against  the  surrender  for  cancellation  of the  certificates  for the shares
redeemed. Any shares of Convertible  Exchangeable Preferred Stock so noticed for
redemption  may be  converted  into  shares  of  Common  Stock,  as  hereinafter
provided,  at any time  prior to the  close of  business  on the date  fixed for
redemption.

         If notice of redemption shall have been mailed as hereinbefore provided
and if on or before  the  redemption  date  specified  in such  notice all funds
necessary for such redemption shall have been set aside by their  corporation so
as to be  available  for the  benefit of the holders of the shares so called for
redemption,  then from and after the date fixed for the redemption the shares of
Convertible   Exchangeable   Preferred   Stock   so   called   for   redemption,
notwithstanding that any certificate therefor shall not have been surrendered or
canceled,  shall no longer be deemed outstanding,  dividends thereon shall cease
to accrue and all rights of the holders with respect to such shares  (including,
without  limitation,  the  conversion  rights  provided for in Clause (6)) shall
forthwith on the redemption  date cease and terminate,  except only the right of
the holders  thereof to receive  upon  surrender  of  certificates  therefor the
amount payable upon  redemption  thereof,  but without  interest.  Any shares of
Convertible  Exchangeable  Preferred  Stock so  noticed  for  redemption  may be
converted  into shares of Common Stock,  as  hereinafter  provided,  at any time
prior to the close of business on the date fixed for redemption.

         (5)(A) Optional Exchange. In addition to the optional redemption rights
of the  corporation  as set  forth in Clause  (4)  above,  at the  option of the
corporation the Convertible  Exchangeable  Preferred Stock shall be exchangeable
in whole but not in part on any dividend  payment date  beginning  June 15, 1989
for the corporation's 8 1/2% Convertible  Subordinated  Debentures Due 2012 (the
"Debentures") to be issued substantially in the form set forth in the form of an
Indenture filed with the Securities and Exchange Commission as an Exhibit to the
corporation's  Registration  Statement on Form S-2  relating to the  Convertible
Exchangeable  Preferred  Stock,  Registration  No.  33-14434 (the  "Registration
Statement").  No such exchange  shall be made unless all  dividends  accrued and
payable  on the  Convertible  Exchangeable  Preferred  Stock  to the date of the
exchange have been paid or declared and  sufficient  amounts set aside for their
payment.   Upon  election  by  the   corporation  to  exchange  the  Convertible
Exchangeable  Preferred Stock, each share of Convertible  Exchangeable Preferred
Stock will be exchangeable for $250 principal amount of Debentures.

                  (B)  Notice  of  Exchange.  Notice  of  any  exchange  of  the
Convertible  Exchangeable  Preferred  Stock shall be mailed not less than thirty
(30) and not more than sixty (60) days prior to the date fixed for such exchange
to each holder of Convertible  Exchangeable  Preferred  Stock,  at such holder's
address as it appears on the books of the corporation,

                                       26





specifying the effective  date of the exchange and the place where  certificates
for shares of the Convertible Exchangeable Preferred Stock are to be surrendered
for  Debentures  and  stating  that  dividends  on  shares  of  the  Convertible
Exchangeable  Preferred  Stock  will  cease to  accrue  on and after the date of
exchange;  provided, however, that no defect in the mailing of such notice shall
affect the  validity of the  proceedings  for the  exchange of any shares of the
Convertible Exchangeable Preferred Stock.

                  (C) Indenture;  Opinion of Counsel.  Prior to giving notice of
intention to exchange  pursuant to Clause (5)(B) above,  the  corporation  and a
bank or trust company selected by the corporation  shall execute and deliver the
Indenture  substantially  in the form filed as an  Exhibit  to the  Registration
Statement  with such changes as may be required by law,  stock  exchange rule or
usage or that do not  adversely  affect  the  interests  of the  holders  of the
Debentures.  A copy of the  Indenture  may be  inspected  by the  holders of any
shares  of  Convertible  Exchangeable  Preferred  Stock  at the  offices  of the
corporation  during normal business hours.  The corporation will not give notice
of its  intention  to exchange  pursuant to Clause  (5)(B) above unless it shall
file at the office or agency of the  corporation  maintained for the exchange of
Convertible  Exchangeable  Preferred  Stock an opinion of counsel (who may be an
employee  of the  corporation)  that the  Indenture  has been  duly  authorized,
executed and delivered by the  corporation,  has been duly  qualified  under the
Trust  Indenture Act of 1939 (or that such  qualification  is not necessary) and
constitutes a valid and binding instrument  enforceable  against the corporation
in accordance with its terms (subject to bankruptcy, insolvency,  reorganization
and other laws of general  applicability  relating  to or  affecting  creditors'
rights  and  to  general   equity   principles,   and   subject  to  such  other
qualifications as are then contained in opinions of counsel  experienced in such
matters),  and to the effect that the Debentures  have been duly authorized and,
when  executed  and  authenticated  in  accordance  with the  provisions  of the
Indenture and delivered in exchange for the shares of  Convertible  Exchangeable
Preferred  Stock,   will  constitute  valid  and  binding   obligations  of  the
corporation  entitled to the benefits of the Indenture  (subject as  aforesaid);
and that the exchange of Debentures for the Convertible  Exchangeable  Preferred
Stock  will  not  violate  the  laws  of  the  state  of  incorporation  of  the
corporation; and that neither the execution and delivery of the Indenture or the
Debentures  nor  compliance  with the terms,  conditions  or  provisions of such
instruments  will  result  in a  breach  or  violation  of any of the  terms  or
provisions of, or constitute a default under, any indenture,  mortgage,  deed of
trust or other  agreement or  instrument,  known to such  counsel,  to which the
corporation or any of its  subsidiaries is a party or by which it or any of them
is bound, or any decree, judgment, order, rule or regulation,  known to counsel,
of any  court  or  governmental  agency  or body  having  jurisdiction  over the
corporation  and  such  subsidiaries  or any of their  properties;  and that the
Debentures  have been duly  registered for such exchange with the Securities and
Exchange  Commission  under a registration  statement that has become  effective
under  the  Securities  Act of 1933  (the  "Act")  or that the  exchange  of the
Debentures for the shares of Convertible  Exchangeable Preferred Stock is exempt
from registration under the Act.

                  (D)      Exchange Procedure.  If on the date fixed for 
exchange, the corporation has taken all action required to authorize the
issuance of the Debentures in exchange for the

                                       27





Convertible   Exchangeable  Preferred  Stock  then,   notwithstanding  that  the
certificates  for such shares have not been surrendered for  cancellation,  from
and after the date fixed for  exchange  the shares of  Convertible  Exchangeable
Preferred Stock shall no longer be deemed  outstanding,  dividends thereon shall
cease to accrue  and all  rights of the  holders  with  respect  to such  shares
(including,  without  limitation,  the conversion  rights provided for in Clause
(6)) shall terminate,  except only the rights to receive  dividends  accrued and
unpaid as of the date of exchange and, upon surrender of certificates  therefor,
the right to receive  the  Debentures,  and the person or  persons  entitled  to
receive the Debentures  issuable upon exchange shall be treated for all purposes
as the registered holder or holders of such Debentures.  Upon due surrender of a
certificate representing shares of Convertible Exchangeable Preferred Stock, the
holder  thereof shall  receive the principal  amount of Debentures to which such
holder is thereby  entitled.  Any shares of Convertible  Exchangeable  Preferred
Stock so noticed for exchange may be converted  into shares of Common Stock,  as
hereinafter  provided,  at any time prior to the close of  business  on the date
fixed for exchange.

         (6)      Conversion Rights.

                  (A) Conversion Provisions. At any time subsequent to the Issue
Date,  the  holders of any one or more  shares of the  Convertible  Exchangeable
Preferred Stock may, at their option, convert such share or shares, on the terms
and conditions set forth in this Clause (6), into fully paid and  non-assessable
shares of Common Stock except  that,  with respect to any shares of  Convertible
Exchangeable  Preferred Stock called for redemption or exchange,  the conversion
right shall  terminate  at the close of business  on the date of  redemption  or
exchange,  unless  default is made in the payment of the  redemption or exchange
price.  Each shares of the  Convertible  Exchangeable  Preferred  Stock shall be
convertible  into  6.62252  shares of Common Stock  (equivalent  to a conversion
price of $37.75  per  share);  provided;  however,  that the number of shares of
Common  Stock   issuable  on  conversion  of  each  share  of  the   Convertible
Exchangeable  Preferred  Stock  (the  "conversion  rate")  shall be  subject  to
adjustments  in accordance  with the  provisions  hereinafter  set forth in this
Clause (6).

                  (B)      Adjustment for Change in Capital Stock.  If the 
corporation

                  (i)      pays a dividend or makes a distribution on its Common
                           Stock, in shares of its Common Stock;

                  (ii)     subdivides  its  outstanding  shares of Common  Stock
                           into a greater number of shares;

                  (iii)    combines its outstanding  shares of Common Stock into
                           a smaller number of shares;

                  (iv)     makes a distribution on its Common Stock in shares of
                           its capital stock other than Common Stock; or


                                       28





                  (v)      issues by  reclassification  of its Common  Stock any
                           shares of its capital stock;

then the  conversion  privilege and the conversion  price in effect  immediately
before  such  action  shall be  adjusted  so that the holder of the  Convertible
Exchangeable  Preferred  Stock  thereafter  converted  may receive the number of
shares of capital stock of the corporation which he would have owned immediately
following such action if he had converted the Convertible Exchangeable Preferred
Stock  immediately  before the record date (or, if no record date, the effective
date) for such action.  The adjustment shall become effective  immediately after
the record date in the case of a dividend or distribution and immediately  after
the   effective   date  in  the   case   of  a   subdivision,   combination   or
reclassification.

         If  after  an  adjustment  a  holder  of the  Convertible  Exchangeable
Preferred  Stock upon conversion of it may receive shares of two or more classes
of  capital  stock of the  corporation,  the  corporation  shall  determine  the
allocation  of the  adjusted  conversion  price  between  the classes of capital
stock. After such allocation,  the conversion  privilege and conversion price of
each class of capital  stock shall  thereafter be subject to adjustment on terms
comparable to those applicable to Common Stock contained in this Clause (6).

                  (C)   Adjustment   for  Rights  Issue.   If  the   corporation
distributes  any rights or warrants to the holders of its Common Stock entitling
them for a period  expiring  within  sixty  (60)  days  after  the  record  date
mentioned  below to  purchase  shares of Common  Stock at a price per share less
than the current  market  price per share on that record  date,  the  conversion
price shall be adjusted in accordance with the formula:

                                            O + N x P
                                                -----
                           C1 = C x               M
                                            ---------
                                              O + N

where

C1       =        the adjusted conversion price.
C        =        the current conversion price.
O        =        the number of shares of Common Stock outstanding on the record
                  date.
N        =        the number of additional shares of Common Stock offered.
P        =        the offering price per share of the additional shares.
M        =        the current market price per share of Common Stock on the
                  record date.

         The adjustment shall become effective immediately after the record date
for the  determination  of  stockholders  entitled  to  receive  the  rights  or
warrants. Such adjustment shall be made successively whenever such a record date
is fixed;  and in the event that such rights or warrants are not exercised prior
to the expiration therefor, the conversion price shall again be

                                       29





adjusted to be the conversion price which would then be in effect if such record
date had not been fixed.

                  (D) Adjustment  For Other  Distributions.  If the  corporation
distributes  to the  holders  of its  Common  Stock  any of its  assets  or debt
securities or any rights or warrants to purchase  securities of the corporation,
the conversion price shall be adjusted in accordance with the formula:

                           C1 = C x M - F
                                    -----
                                      M

where

C1       =        the adjusted conversion price.
C        =        the current conversion price.
M                 = the  current  market  price  per  share of
                  Common  Stock on the record  date  mentioned
                  below.
F                 = the fair  market  value on the record date
                  of  the   assets,   securities,   rights  or
                  warrants  applicable  to one share of Common
                  Stock.  The corporation  shall determine the
                  fair market value.

         The adjustment shall become effective immediately after the record date
for the determination of stockholders entitled to receive the distribution. Such
adjustment shall be made successively  whenever such a record date is fixed; and
in the event that such  distribution is not so made, the conversion  price shall
again be adjusted to the conversion  price which would then be in effect if such
record date had not been fixed.

         This   Sub-Clause  (D)  does  not  apply  to  cash  dividends  or  cash
distributions  paid out of  earnings  or  surplus  as shown on the  books of the
corporation.  Also,  this  Sub-Clause  (D) does not apply to rights or  warrants
referred to in Sub-Clause (C) above.

                  (E)   Adjustment   for   Reorganization.   In   case   of  any
consolidation or merger of the corporation into another  corporation,  or in the
case of any merger of another  corporation  into the  corporation  (other than a
merger with a  corporation  in which merger the  corporation  is the  continuing
corporation  and  which  does not  result in any  reclassification,  conversion,
exchange or cancellation of outstanding  shares of Common Stock),  or in case of
any lease or transfer to another  corporation of all or substantially all of the
assets  of the  corporation,  the  holder  of  each  share  of  the  Convertible
Exchangeable  Preferred Stock then outstanding  shall have the right thereafter,
subject to the terms and  conditions  of this Clause (6), to convert  such share
into the kind and amount of shares of stock and other  securities  and  property
receivable upon such consolidation, merger, lease or transfer by a holder of the
number  of  shares  of  Common  Stock  into  which  such  share  of  Convertible
Exchangeable Preferred Stock might have been converted immediately prior to such
consolidation,  merger, lease or transfer; and effective provision shall be made
in the  Articles  of  Organization  or Charter  of the  resulting  or  surviving
corporation or otherwise so that the provisions set forth

                                       30





in this Clause (6) shall thereafter be applicable, as nearly as practicable,  to
any such other shares of stock and other  securities  and  property  deliverable
upon  conversion  of the  Convertible  Exchangeable  Preferred  Stock  remaining
outstanding or other  convertible  exchangeable  preferred stock received by the
holders in place thereof; and any such resulting or surviving  corporation shall
expressly assume the obligation to deliver,  upon the exercise of the conversion
privilege, such shares, securities or property as the holders of the Convertible
Exchangeable  Preferred  Stock  remaining  outstanding,   or  other  convertible
preferred  stock received by the holders in place  thereof,  may be entitled to,
and to make  provision  for the  protection  of the  conversion  right as herein
provided (unless the corporation assumes such obligation). In case securities or
property other than shares of Common Stock shall be issuable or deliverable upon
conversion as  aforesaid,  then all  reference in this  Sub-Clause  (E) shall be
deemed to apply,  so far as appropriate  and as nearly as  practicable,  to such
other  securities  or property.  The  provisions  of this  Sub-Clause  (E) shall
similarly apply to successive reorganizations,  consolidations,  mergers, leases
or transfers.

                  (F) Current Market Price.  For the purposes of any computation
under this Clause (6), the current market price per share of Common Stock at any
date  shall be deemed to be the  average  of the daily  closing  prices  for any
thirty (30) consecutive business days selected by the corporation commencing not
more than forty-five (45) business days before the date in question. The closing
price  for each  day  shall be the last  reported  sale of  Common  Stock on the
principal national  securities  exchange on which the Common Stock may be listed
or if such stock is not then so listed, the closing price of the Common Stock as
shown by the National  Association of Securities  Dealers,  Inc. National Market
or, if no such closing price is available,  at the average of the representative
last bid and asked prices of such Common Stock in the  over-the-counter  market,
as shown by the National  Association  of  Securities  Dealers,  Inc.  Automated
Quotation System Level I (or comparable  system) or in the absence of any of the
foregoing,  the fair market value as determined by the Board of Directors (whose
determination shall be conclusive).

                  (G) Fractional  Shares.  No fractional  shares of Common Stock
shall be issued on any conversion, but in lieu thereof the corporation shall pay
in cash an amount equal to the current market value of such fractional  interest
computed on the basis of the closing price as determined in accordance  with the
provision  of  Sub-Clause  (F) above,  on the last trading day prior to the date
upon which conversion is deemed to have been effected.  Any  determination  that
the corporation or the Board of Directors makes regarding  fractional  shares is
conclusive.

                  (H) When No Adjustment  Required.  No adjustment  need be made
for a transaction referred to in Sub-Clause (B), (C) or (D) above if the holders
of the  Convertible  Exchangeable  Preferred  Stock  are to  participate  in the
transaction on a basis and with notice that the Board of Directors determines to
be fair and  appropriate  in light of the basis and  notice on which  holders of
Common Stock participate in the transaction.


                                       31





         Notwithstanding  the  provisions of  Sub-Clauses  (B), (C), (D) and (E)
above,  no  adjustment  of the  conversion  rate shall be  required  unless such
adjustment would require an increase or decrease of at least 1% conversion rate,
but in such case any adjustment  that would otherwise be in the required then to
be made shall be carried  forward and shall be made at the time of and  together
with the next  subsequent  adjustment.  All  calculations  under this Clause (6)
shall be made and rounded to the nearest one-hundredth of a share or the nearest
cent, as the case may be.

         No payment or  adjustment  on account of  dividends  accumulated  or in
arrears upon shares of the Conversion  Exchangeable  Preferred  Stock, any other
series of Preferred Stock, or Common Stock, shall be made in connection with any
conversion,  except as may otherwise be provided at the  discretion of the Board
of  Directors  and  except  as  provided  hereinafter.   Shares  of  Convertible
Exchangeable  Preferred  Stock  surrendered  for  conversion  during  the period
between the date fixed as the record date for the payment of a dividend  and the
date fixed as the dividend  payment date must be  accompanied  by payment to the
corporation  of an amount  equal to the  dividend  payable on such shares on the
dividend payment date, provided,  however,  that if the corporation fixes a date
for  redemption  or for  exchange  of such  shares of  Convertible  Exchangeable
Preferred Stock which is after such record date for the payment of dividends and
before such  dividend  payment  date,  then shares of  Convertible  Exchangeable
Preferred  Stock  surrendered  for conversion  after such record date and before
such dividend payment date need not be accompanied by payment to the corporation
of an amount  equal to the  dividend  on such  shares  payable on such  dividend
payment date.

         No adjustment need be made for sales of Common Stock pursuant to a plan
for  reinvestment of dividends or interest and no adjustment need to be made for
a change in the par value of the Common Stock.

         No adjustment need be made in connection with the issuance of shares of
Common Stock upon conversion of the Convertible  Exchangeable Preferred Stock or
the  issuance  of  (including  the  issuance  of awards,  rights and  options to
purchase)  shares of Common Stock to employees or other eligible  persons of the
corporation under plans duly adopted by the stockholders of the corporation.

         The Board of Directors shall have the power to resolve any ambiguity or
correct any error in this Clause (6) and its action in so doing, as evidenced by
a Board resolution, shall be final and conclusive.

         The  certificate  of any  independent  firm of  public  accountants  of
recognized  standing  selected by the Board of Directors  shall be  satisfactory
evidence of the correctness of any computation made in this Clause (6).

                  (I)  Notice of  Adjustment.  Whenever  there is an  adjustment
requiring a change in the conversion  rate, the corporation  shall file with the
transfer agent, or transfer agents, for the Convertible  Exchangeable  Preferred
Stock, a statement signed by the Secretary

                                       32





of the  corporation,  describing  specifically  the  event  giving  rise to such
adjustment  and stating  the  adjustment  which shall be made to the  conversion
rate. The statement so filed shall be open to inspection by any holder of record
of shares of the Convertible Exchangeable Preferred Stock. The corporation shall
at that  time of  filing  any such  statement  mail  notice to the same at their
addresses  appearing on the books of the  corporation or supplied by them to the
corporation  for the  purpose of notice.  In  addition,  the  corporation  shall
include  a notice of the  conversion  rate with  each  dividend  payment  on the
Convertible  Exchangeable  Preferred  Stock or  otherwise  give  notice  thereof
promptly  after the due date for each such  dividend,  whenever there has been a
change in the conversion rate since the last previous dividend due date.

                  (J) Conversion Procedure. Upon surrender to the corporation at
the office of the  transfer  agent,  or  transfer  agents,  for the  Convertible
Exchangeable  Preferred Stock, or at such other place or places,  if any, as the
Board of Directors of the  corporation  may  determine,  of  certificates,  duly
endorsed to the corporation or in blank, for shares of Convertible  Exchangeable
Preferred  Stock to be  converted,  together  with  appropriate  evidence of the
payment of any transfer or similar tax, if required, and instructions in writing
to the corporation to convert such shares and specifying the name and address of
the  person,  corporation,  firm or other  entity to whom such  shares are to be
issued, the corporation will issue (i) the number of full shares of Common Stock
issuable on conversion  thereof as of the time of such surrender and as promptly
as practicable  thereafter will deliver  certificates  for such shares of Common
Stock,  and (ii) cash for any  remaining  fraction  of a share,  as  provided in
Sub-Clause  (G)  above.  The  corporation  shall pay any  documentary,  stamp or
similar  issue or transfer  tax due on the issue of shares of Common  Stock upon
conversion;  provided,  however, that the holder shall pay any such tax which is
due  because  such  shares  are to be issued in a name  other  than that of such
holder.

         The  corporation  shall at all times  after the Issue Date  reserve for
issuance  upon  conversion of the  Convertible  Exchangeable  Preferred  Stock a
sufficient  number of full  shares of Common  Stock for the  conversion  of each
outstanding  share of Convertible  Exchangeable  Preferred  Stock at the current
conversion rate.

                  (K)      Notice of Certain Transactions.  If

                  (i)      the  corporation  takes any action that would require
                           an  adjustment  in the  conversion  rate  pursuant to
                           Sub-Clauses (B), (C), (D) and (E) of this Clause (6);
                           or

                  (ii)     there  is a  voluntary  or  involuntary  liquidation,
                           dissolution or winding-up of the corporation;

the  corporation  shall provide notice in the manner set forth in Sub-Clause (I)
of this  Clause (6) of such  action,  stating  therein the  proposed  date for a
distribution or the effective date of a reclassification, consolidation, merger,
lease, transfer, liquidation, dissolution or winding-up,

                                                        33





at least  fifteen (15) days in advance of such date.  Failure to mail the notice
or any defect therein shall not affect the validity of the transaction.

                  (L)  Reduction of  Conversion  Price Below Par Value of Common
Stock.  Before  taking any action which would cause an  adjustment  reducing the
conversion  price  below  the  then  par  value  (if  any) of the  Common  Stock
deliverable upon conversion of the Convertible Exchangeable Preferred Stock, the
corporation  will take any  corporate  action  which may,  in the opinion of its
counsel,  be  necessary  in order that the  corporation  may validly and legally
issue  fully paid and  non-assessable  shares of Common  Stock at such  adjusted
conversion price.

                  (M) Decrease in Conversion Price. The corporation from time to
time may decrease the  conversion  price by any amount for any period of time if
the period is at least 20 days and if the  decrease  is  irrevocable  during the
period.  Whenever the conversion price is decreased,  the corporation shall give
notice  of the  decrease  at  least 15 days  prior  to the  date  the  decreased
conversion price takes effect,  in the manner set forth in Sub-Clause (I) above,
which notice shall state the decreased  conversion  price and the period it will
be in effect. A decrease in the conversion price pursuant to this Sub-Clause (M)
shall not otherwise  change or adjust the conversion  price  otherwise in effect
for purposes of this Clause (6).

         (7) Liquidation Rights. In the event of any liquidation, dissolution or
winding up of the  corporation,  the  holders  of the shares of the  Convertible
Exchangeable  Preferred  Stock shall be entitled to receive out of the assets of
the  corporation   available  for  distribution  to  stockholders,   before  any
distribution  of assets is made to holders of Common Stock or any other stock of
the corporation ranking junior to the Convertible  Exchangeable  Preferred Stock
as to  liquidation,  distributions  in an  amount  equal to the then  applicable
redemption  price, as set forth in Clause (4) hereof, in the case of a voluntary
liquidation,  dissolution  or  winding  up,  or in the  case  of an  involuntary
liquidation,  dissolution  or winding up an amount  equal to Two  Hundred  Fifty
Dollars  ($250)  per  share,  plus  in  either  case,  an  amount  equal  to the
accumulated and unpaid dividends thereon.

         If upon  voluntary or involuntary  liquidation,  dissolution or winding
upon of the  corporation,  the amounts  payable with respect to the  Convertible
Exchangeable  Preferred  Stock and any other shares of stock of the  corporation
ranking  as  to  any  such   distribution  on  a  parity  with  the  Convertible
Exchangeable  Preferred  Stock  are  not  paid  in  full,  the  holders  of  the
Convertible  Exchangeable  Preferred  Stock and of such other shares shall share
ratably in any such  distribution  of assets of the corporation in proportion to
the full  respective  preferential  amounts  to which they are  entitled.  After
payment  of the full  amount  of  liquidating  distribution  to  which  they are
entitled,  the holders of shares of  Convertible  Exchangeable  Preferred  Stock
shall not be entitled to any further participation in any distribution of assets
by the corporation.

         Neither the  consolidation  of nor merging of the  corporation  with or
into any other corporation nor corporations, nor the lease or transfer of all or
substantially all of the assets of

                                       34





the corporation shall be deemed to be a liquidation, dissolution or a winding up
of the  corporation  within the meaning of any of the  provisions of this Clause
(7).

         (8) Status of Shares  Redeemed,  Exchanged or Converted.  All shares of
Convertible  Exchangeable  Preferred  Stock  redeemed,  exchanged  or  converted
pursuant  to Clause  (4),  (5) or (6) hereof  and all shares of the  Convertible
Exchangeable  Preferred  Stock  otherwise  reacquired  by  the  corporation  and
subsequently canceled shall be restored to the status of authorized and unissued
Preferred Stock  undesignated as to series subject to reissuance by the Board of
Directors.

         (9)  Subdivision  of  Shares.  The Board of  Directors  may at any time
subdivide  the  shares  of  Convertible  Exchangeable  Preferred  Stock as of an
effective date fixed by the Board of Directors.  Except as otherwise provided by
law,  notice of the proposed  subdivision and the effective date shall be mailed
to each holder of record of Convertible  Exchangeable  Preferred  Stock not less
than fifteen (15) days before the effective date. The dividend rate,  conversion
rate and liquidation rights in effect immediately prior to the close of business
on the effective date of such subdivision shall be proportionately reduced as of
the close of business on the effective date of such division.

         (10)  "Common  Stock"  Defined.  Whenever  reference  is herein made to
"Common  Stock,"  "Common  Stock"  shall  mean  any  stock  of any  class of the
corporation  which has no  preference  in  respect  of  dividends  or of amounts
payable in the event of any voluntary or involuntary liquidation, dissolution or
winding-up  of the  corporation  and which is not subject to  redemption  by the
corporation.  However,  Common Stock issuable upon conversion of the Convertible
Exchangeable  Preferred Stock shall include only shares of the class  designated
as Common Stock as of the original date of issuance of shares of the Convertible
Exchangeable  Preferred  Stock,  or  shares of the  corporation  of any class or
classes resulting from any  reclassification  or  reclassifications  thereof and
which have no  preference  in respect of dividends or of amounts  payable in the
event of any voluntary or involuntary liquidation,  dissolution or winding-up of
the  corporation  and which are not subject to  redemption  by the  corporation;
provided that if at any time there shall be more than one such resulting  class,
the shares of each such class then so  issuable  shall be  substantially  in the
proportion  which the total number of shares of such class  resulting  from such
reclassifications  bears to the total number of shares of all classes  resulting
from all such reclassifications.

         (11) No Preemptive Rights. The holders of the Convertible  Exchangeable
Preferred Stock shall not have any preemptive rights.

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS
                 OFFICE OF THE MASSACHUSETTS SECRETARY OF STATE
                       MICHAEL JOSEPH CONNOLLY, Secretary
              One Ashburton Place, Boston, Massachusetts 02108-1512


                                       35





                      Federal Identification No. 04-1717070

                        CERTIFICATE OF VOTE OF DIRECTORS
                    ESTABLISHING A SERIES OF A CLASS OF STOCK

                     General Laws, Chapter 156B, Section 26


         We, David B. Perini,  President and Richard E. Burnham, Clerk of Perini
Corporation located at 73 Mt. Wayte Avenue,  Framingham,  Massachusetts 01701 do
hereby  certify that at a meeting of the  directors of the  corporation  held on
January 10, 1997, the following vote  establishing and designating a series of a
class of stock and determining  the relative rights and preferences  thereof was
duly adopted:

That  pursuant  to the  authority  vested  in the  Board  of  Directors  of this
Corporation  in  accordance  with the  provisions  of its  Restated  Articles of
Organization,  as amended, a series of Preferred Stock (the "Series B Cumulative
Convertible  Preferred  Stock") of the Corporation be, and it hereby is, created
and that the designation  and amount thereof and the voting powers,  preferences
and relative, participating,  optional and other special rights of the shares of
such series, and the qualifications, limitations and restrictions thereof are as
set forth on Exhibit A hereto.

                                    EXHIBIT A

                 Series B Cumulative Convertible Preferred Stock

         1.  Designation and Amount.  There shall be a series of Preferred Stock
designated as "Series B Cumulative  Convertible  Preferred Stock" and the number
of shares  constituting such series shall be 500,000,  of which 150,150 shall be
issued initially (the date of such issuance,  the "Original Issue Date") and the
remainder  shall be reserved  for  issuance as  dividends  pursuant to Section 3
below.  The  number of  shares  designated  as  shares  of  Series B  Cumulative
Convertible Preferred Stock may be decreased (but not increased) by the Board of
Directors without a vote of stockholders;  provided,  however,  that such number
may not be decreased  without the approval of the holders of 66-2/3% of the then
outstanding shares of Series B Cumulative Convertible Preferred Stock.

         2.       Preemptive Rights.  Holders of shares of Series B Cumulative
Convertible Preferred Stock are not entitled to any preemptive or subscription
rights in respect of any securities of the Corporation.

                                       36






         3.       Dividends.

                  (a) The holders of shares of Series B  Cumulative  Convertible
Preferred  Stock  shall be  entitled  to  receive,  when and as  authorized  and
declared by the Board of Directors  out of funds at the time  legally  available
therefor,  dividends at the Cash Dividend  Rate (defined  below) per annum times
the Liquidation  Preference  (defined below in Section 4(a)) if paid in cash, or
at the In-Kind  Dividend  Rate (defined  below) per annum times the  Liquidation
Preference  if paid in  additional  shares  of Series B  Cumulative  Convertible
Preferred Stock, and no more, which shall be fully cumulative, shall accrue with
respect to any such  share  from the  original  date of  issuance  of such share
without interest and shall be payable quarterly in arrears on March 15, June 15,
September  15  and  December  15 of  each  year  (a  "Dividend  Payment  Date"),
commencing March 15, 1997 (except that if any such date is a Saturday, Sunday or
legal holiday, then such dividend shall be payable on the next day that is not a
Saturday,  Sunday or legal holiday) to holders of record as they appear upon the
stock transfer books of the Corporation on each March 1, June 1, September 1 and
December 1 immediately preceding the payment dates, or such other dates as shall
be  fixed at the  time of the  authorization  and  declaration  by the  Board of
Directors  (or, to the extent  permitted by  applicable  law, a duly  authorized
committee  thereof),  which  date  shall not be less than ten (10) nor more than
sixty (60) days  preceding  the relevant  dividend  payment  date.  For purposes
hereof,   the  term  "legal  holiday"  shall  mean  any  day  on  which  banking
institutions  are  authorized  to close in New  York,  New York.  The  amount of
dividends payable per share of Series B Cumulative  Convertible  Preferred Stock
for each  quarterly  dividend  period  shall be computed by dividing  the annual
dividend  amount by four and shall  include  fractional  shares.  The  amount of
dividends  payable for the initial dividend period and any period shorter than a
full quarterly  period during which shares are outstanding  shall be computed on
the basis of a 360-day  year of twelve  30-day  months and the actual  number of
days  elapsed in the period in which  payable.  No interest  shall be payable in
respect of any dividend payment on the Series B Cumulative Convertible Preferred
Stock or any other Parity Dividend Stock (as  hereinafter  defined) which may be
in arrears.  The "Cash  Dividend Rate" shall be 9 percent per annum if a Special
Default  (defined  below) has occurred and is  continuing at any time during the
applicable  Annual Payment Period (defined  below) or Semiannual  Payment Period
(defined  below),  and shall be 7 percent  per  annum at all  other  times.  The
"In-Kind  Dividend Rate" shall be 12 percent per annum if a Special  Default has
occurred and is  continuing  at any time during the  applicable  Annual  Payment
Period or Semiannual  Payment  Period,  and shall be 10 percent per annum at all
other times.


                                               37





                  (b) Any dividend  payments may be made, in the sole discretion
of the Board of Directors,  as follows (for purposes of this determination,  the
Designated Directors (defined below in Section 13) shall not vote):

                  (i)      Prior to December 15, 1999:

                  (1) on or  prior  to the  Original  Issue  Date  and  prior to
         December  15, 1997 and 1998,  the Board of  Directors  shall  determine
         whether  dividend  payments  payable on the next four Dividend  Payment
         Dates beginning December 15 (each, an "Annual Payment Period") shall be
         paid in (i) cash or (ii)  additional  shares  of  Series  B  Cumulative
         Convertible  Preferred Stock valued at the Liquidation  Preference (but
         not in any  combination  of cash  and  additional  shares  of  Series B
         Cumulative  Convertible Preferred Stock);  provided,  however, that the
         first Annual  Payment Period shall commence March 15, 1997, and run for
         three  Dividend  Payment  Dates if the  Original  Issue Date is between
         December 15, 1996 and March 15, 1997;

                  (2) in the event that,  during an Annual  Payment  Period when
         the Board has  elected  to pay  dividends  on the  Series B  Cumulative
         Convertible   Preferred  Stock  in  cash,  the  Corporation   fails  to
         authorize,  declare and pay in cash on a Dividend Payment Date the full
         amount of the cash dividend due at the Cash Dividend Rate,  then, on or
         prior to such Dividend Payment Date, the Board shall authorize, declare
         and pay a supplemental  stock dividend in shares of Series B Cumulative
         Convertible  Preferred  Stock  (valued at the  Liquidation  Preference)
         equal to the difference  between the dividend that would have been paid
         in-kind  at the  In-Kind  Dividend  Rate  (assuming  that the Board had
         elected to pay  dividends  for such period  in-kind and assuming that a
         Special Default  existed) and the cash dividend  actually  declared and
         paid on such Dividend Payment Date and on the previous Dividend Payment
         Date during such Annual Payment Period, if any.

                  (ii)     On or after December 15, 1999:

                  (1) On or prior to  December  15, 1999 and on or prior to each
         June 15 and  December  15  thereafter,  the  Board of  Directors  shall
         determine  whether dividend  payments accruing on the next two Dividend
         Payment  Dates  beginning  on  such  Dividend   Payment  Date  (each  a
         "Semiannual  Payment  Period")  shall  be  paid  in (i)  cash  or  (ii)
         additional  shares of Series B Cumulative  Convertible  Preferred Stock
         valued at the  Liquidation  Preference  (but not in any  combination of
         cash and additional shares of Series B Cumulative Convertible Preferred
         Stock);


                                       38





                  (2) in the event that, during a Semiannual Payment Period when
         the Board has  elected  to pay  dividends  on the  Series B  Cumulative
         Convertible   Preferred  Stock  in  cash,  the  Corporation   fails  to
         authorize,  declare and pay in cash on a Dividend Payment Date the full
         amount of the cash  dividend due at the Cash  Dividend  Rate,  then, on
         such Dividend Payment Date, the Board shall authorize,  declare and pay
         a  supplemental  stock  dividend  in  shares  of  Series  B  Cumulative
         Convertible  Preferred  Stock  (valued at the  Liquidation  Preference)
         equal to the difference  between the dividend that would have been paid
         in-kind  at the  In-Kind  Dividend  Rate  (assuming  that the Board had
         elected to pay  dividends  for such period  in-kind and assuming that a
         Special Default  existed) and the cash dividend  actually  declared and
         paid on such Dividend Payment Date and on the previous Dividend Payment
         Date during such Semiannual Payment Period, if any.

                  (iii)    All  shares  of  Series  B   Cumulative   Convertible
                           Preferred  Stock issued as a dividend with respect to
                           the Series B Cumulative  Convertible  Preferred Stock
                           shall thereupon be duly  authorized,  validly issued,
                           fully paid and nonassessable.

                  (c) In the case of shares of Series B  Cumulative  Convertible
Preferred Stock issued on the Original Issue Date, dividends shall accrue and be
cumulative  from such  date.  In the case of shares of Series B  Cumulative  Con
vertible  Preferred  Stock issued as a dividend on shares of Series B Cumulative
Convertible  Preferred Stock,  dividends shall accrue and be cumulative from the
dividend payment date in respect of which such shares were (or should have been)
issued as a dividend.

                  (d) Each fractional  share of Series B Cumulative  Convertible
Preferred Stock outstanding shall be entitled to a ratably  proportionate amount
of all  dividends  accruing with respect to each  outstanding  share of Series B
Cumulative  Convertible  Preferred Stock, and all such dividends with respect to
such outstanding fractional shares shall be cumulative and shall accrue (whether
or not  declared),  and shall be payable in the same manner and at such times as
provided for above with respect to dividends on each outstanding share of Series
B Cumulative  Convertible  Preferred  Stock.  Each fractional  share of Series B
Cumulative  Convertible  Preferred Stock outstanding shall also be entitled to a
ratably  proportionate  amount of any other  distributions  made with respect to
each outstanding share of Series B Cumulative  Convertible  Preferred Stock, and
all such distributions  shall be payable in the same manner and at the same time
as distributions on each  outstanding  share of Series B Cumulative  Convertible
Preferred Stock.

                  (e)      No dividends or other distributions shall be 
authorized, declared, paid or set apart for payment on any shares of Common
Stock or

                                       39





other stock of the  Corporation  ranking  junior as to dividends to the Series B
Cumulative  Convertible  Preferred  Stock  (collectively,  the "Junior  Dividend
Stock") except for dividends or distributions that are not Extraordinary  Equity
Payments (defined below in Section 8(h)).

                  (f) If at any  time any  dividend  on the  $21.25  Convertible
Exchangeable  Preferred Stock (the "$21.25  Preferred Stock") or any other stock
of the Corporation hereafter issued ranking senior as to dividends to the Series
B Cumulative Convertible Preferred Stock (collectively with the $21.25 Preferred
Stock, the "Senior  Dividend  Stock") shall be in arrears,  in whole or in part,
then (except to the extent allowed by the terms of such Senior  Dividend  Stock)
no cash dividend shall be authorized, declared, paid or set apart for payment on
the Series B Cumulative Convertible Preferred Stock unless and until all accrued
and unpaid  dividends with respect to the Senior  Dividend Stock for all payment
periods ending on or prior to the date of payment of the current dividend on the
Series B  Cumulative  Convertible  Preferred  Stock shall have been  authorized,
declared  and paid or set apart for  payment.  Dividends  payable in  additional
shares of Series B Cumulative  Convertible Preferred Stock are permitted and not
subordinated in payment to payment of dividends on the Senior Dividend Stock.

                  (g) No dividends or other  distributions  shall be authorized,
declared,  paid  or  set  apart  for  payment  on any  class  or  series  of the
Corporation's stock heretofore or hereafter issued ranking, as to dividends,  on
a parity with the Series B Cumulative  Convertible  Preferred Stock (the "Parity
Dividend  Stock") for any period unless full cumulative  dividends have been, or
contemporaneously  are, authorized,  declared and paid or set apart in trust for
such  payment on the Series B  Cumulative  Convertible  Preferred  Stock for all
dividend payment periods  terminating on or prior to the date of payment of such
full cumulative  dividends.  No full dividends (other than dividends  payable in
additional shares of Series B Cumulative  Convertible  Preferred Stock) shall be
authorized,  declared,  paid or set apart for payment on the Series B Cumulative
Convertible Preferred Stock for any period unless full cumulative dividends have
been, or contemporaneously  are, authorized,  declared and paid or set apart for
payment on the Parity Dividend Stock for all dividend periods  terminating on or
prior to the date of payment of such full  cumulative  dividends.  When  accrued
dividends are not paid in full on the Series B Cumulative  Convertible Preferred
Stock and the Parity Dividend Stock, all cash dividends authorized, declared and
paid or set apart for payment on the Series B Cumulative  Convertible  Preferred
Stock and the Parity Dividend Stock shall be authorized,  declared,  paid or set
apart for payment pro rata so that the amount of dividends authorized, declared,
paid or set apart for payment per share on the Series B  Cumulative  Convertible
Preferred  Stock and the Parity  Dividend  Stock shall in all cases bear to each
other the same ratio that accrued and unpaid dividends per

                                       40





share on the  Series B  Cumulative  Convertible  Preferred  Stock and the Parity
Dividend Stock bear to each other.

         4.       Liquidation Preference.

                  (a) The  liquidation  preference  of the  Series B  Cumulative
Convertible  Preferred  Stock  shall be  $200.00  per  share  (the  "Liquidation
Preference").  Subject to the full payment of the liquidation preferences of the
$21.25  Preferred  Stock and the  shares of stock of the  Corporation  hereafter
issued  ranking  senior  as to  liquidation  rights to the  Series B  Cumulative
Convertible  Preferred Stock (the "Senior Liquidation Stock"), in the event of a
liquidation,  dissolution or winding up of the Corporation, whether voluntary or
involuntary,  the holders of shares of Series B Cumulative Convertible Preferred
Stock shall be entitled to receive out of the assets of the Corporation, whether
such assets are stated capital or surplus of any nature,  an amount equal to the
dividends accrued and unpaid on such shares on the date of final distribution to
such holders, whether or not declared, without interest, plus a sum equal to the
Liquidation  Preference,  and no more,  before any payment  shall be made or any
assets  distributed  to the holders of shares of Common Stock or any other class
or series of the  Corporation's  stock  hereafter  issued  ranking  junior as to
liquidation  rights  to the  Series B  Cumulative  Convertible  Preferred  Stock
(collectively, the "Junior Liquidation Stock").

                  (b) The assets of the Corporation  available for  distribution
after the liquidation  preferences of the Senior Liquidation Stock are fully met
shall be  distributed  ratably  among the  holders  of the  Series B  Cumulative
Convertible  Preferred Stock and any other class or series of the  Corporation's
stock  hereafter  issued ranking on a parity as to  liquidation  rights with the
Series B Cumulative  Convertible Preferred Stock in proportion to the respective
preferential  amounts to which each is entitled  (but only to the extent of such
preferential  amounts);  provided,  however,  that after  payment in full of the
Liquidation  Preferences,  the holders of the shares of the Series B  Cumulative
Convertible  Preferred Stock shall not be entitled to any further  participation
in any  distribution of assets by the  Corporation.  Neither a consolidation  or
merger of the Corporation  with or into another  corporation nor a merger of any
other corporation with or into the Corporation, nor a sale or transfer of all or
any part of the  Corporation's  assets for cash,  securities or other  property,
will be considered a liquidation, dissolution or winding up of the Corporation.

                                       41






         5. Limitation on Share Repurchase.  If at any time any dividends on the
Series B  Cumulative  Convertible  Preferred  Stock  shall be in  arrears or the
Corporation  shall  have  failed  to make any  purchase  of  shares  of Series B
Cumulative Convertible Preferred Stock tendered to it pursuant to Section 7, the
Corporation  shall  not -- and  the  Corporation  shall  not  permit  any  other
corporation or legal entity directly or indirectly controlled by the Corporation
(collectively, the "subsidiaries") to -- repurchase, redeem, retire or otherwise
acquire any shares of Junior Dividend Stock,  Junior  Liquidation  Stock, or any
warrants,  rights,  calls or options  exercisable  for or  convertible  into any
shares  of  Junior  Dividend  Stock  or  Junior  Liquidation  Stock,  except  by
conversion  into or  exchange  for  shares  of Junior  Dividend  Stock or Junior
Liquidation  Stock  and  other  than  purchases,  redemptions,   retirements  or
acquisitions  made  pursuant  to and as  required  by the terms of any  employee
incentive  or  benefit  plan  of  the  Corporation  or  any  subsidiary  of  the
Corporation  in  effect  on  July  24,  1996 or as  amended  or  adopted  by the
Corporation  with  approval  of the  Executive  Committee  of  the  Corporation.
Notwithstanding the preceding sentence,  any subsidiary which is wholly owned by
the Corporation may repurchase,  redeem,  retire or otherwise  acquire shares of
its stock.

         6.       Redemption at Option of the Corporation.

                  (a) So long as shares of Common Stock shall have traded on the
Primary  Exchange  (defined below) (i) for at least forty (40) of the forty-five
(45)  trading  days  (each of which  trading  days  shall  be  after  the  third
anniversary  of the Original Issue Date (the "Third  Anniversary"))  immediately
preceding the  Determination  Date (defined below),  and (ii) on each of the ten
(10)  consecutive  trading  days  immediately  prior to the  Determination  Date
(defined  below),  at a Closing Price (as hereinafter  defined) in excess of the
Hurdle Percentage (defined below) of the conversion price then in effect for the
Series B Cumulative  Convertible Preferred Stock for each such trading day, all,
but not less than all, of Series B Cumulative  Convertible  Preferred  Stock may
thereafter  be redeemed at the  election of the Board of  Directors  made on any
date (the  "Determination  Date") on or after  the  Third  Anniversary,  for the
Redemption  Price (defined below in Section 7(b)),  plus an amount in cash equal
to accrued and unpaid dividends thereon,  whether or not authorized or declared,
to  but  excluding  the  date  fixed  for   redemption.   For  purposes  of  the
determination of the Board called for in the preceding sentence,  the Designated
Directors  (defined  below in Section 13) shall not vote. The date on which such
shares shall be redeemed  shall be a date that is at least ten (10), but no more
than thirty (30),  business  days after the  Determination  Date  (during  which
period the holders of the Series B Cumulative  Convertible  Preferred Stock may,
but shall not be required to, convert such stock into Common Stock).  The Hurdle
Percentage shall be 150% from and after the Third Anniversary, and to the fifth

                                       42





anniversary of the Original Issue Date; thereafter,  the Hurdle Percentage shall
be 125%. "Primary Exchange" shall mean the American Stock Exchange or such other
principal national  securities  exchange or quotation system on which the Common
Stock of the Corporation is quoted or listed or admitted to trading.


                  (b) Not more than thirty (30) nor less than ten (10)  business
days  prior  to the  redemption  date  fixed  by the  Board  of  Directors,  the
Corporation  shall give  notice by hand or  overnight  courier to the holders of
record of shares of the Series B Cumulative  Convertible  Preferred  Stock to be
redeemed,  addressed to such  holders at their last  addresses as shown upon the
stock transfer books of the  Corporation.  Each such notice of redemption  shall
specify the date fixed for  redemption;  the Redemption  Price (defined below in
Section  7(b))  plus an amount in cash equal to  accrued  and  unpaid  dividends
thereon,  whether or not authorized or declared, to but excluding the date fixed
for redemption;  the place or places of payment;  that payment will be made upon
presentation  and  surrender  of the shares of Series B  Cumulative  Convertible
Preferred  Stock;  that on and after the redemption date dividends will cease to
accrue on such shares;  the then effective  conversion price pursuant to Section
8; and that the right of  holders  to  convert  shares  of  Series B  Cumulative
Convertible  Preferred  Stock  shall  terminate  at the close of business on the
business day prior to the redemption  date (unless the  Corporation  defaults in
the payment of the Redemption  Price plus an amount in cash equal to accrued and
unpaid  dividends  thereon,  whether  or  not  authorized  or  declared,  to but
excluding the date fixed for redemption).

                  (c) Any notice as herein  provided shall be deemed to be given
when delivered to the address  specified in the preceding  section.  On or after
the date  fixed for  redemption  as stated in such  notice,  each  holder of the
shares called for  redemption,  unless such holder has  exercised  such holder's
right to convert shares of Series B Cumulative  Convertible  Preferred  Stock as
provided above, shall surrender the certificate  representing such shares to the
Corporation  at the place  designated  in such  notice  and shall  thereupon  be
entitled to receive  payment of the  Redemption  Price (defined below in Section
7(b))  plus an amount in cash equal to accrued  and  unpaid  dividends  thereon,
whether or not  authorized  or  declared,  to but  excluding  the date fixed for
redemption.  If less  than all the  shares  evidenced  by any  such  surrendered
certificate are redeemed,  a new certificate  shall be issued  representing  the
unredeemed shares. Notice having been given as aforesaid,  if, on the date fixed
for redemption,  funds necessary for the redemption shall be available  therefor
and shall have been irrevocably  deposited or set aside in trust for the holders
of the  shares  of  Series  B  Cumulative  Convertible  Preferred  Stock,  then,
notwithstanding  that the  certificates  representing  any  shares so called for
redemption shall not have been surrendered, dividends with respect to the

                                       43





shares so called shall cease to accrue after the date fixed for redemption, such
shares shall no longer be deemed outstanding, the holders thereof shall cease to
be stockholders of the Corporation and all rights whatsoever with respect to the
shares so called for redemption  (except the right of the holders to receive the
Redemption  Price plus an amount in cash equal to accrued  and unpaid  dividends
thereon,  whether or not authorized or declared, to but excluding the date fixed
for redemption,  without interest upon surrender of their certificates therefor)
shall terminate.  If funds legally available for such purpose are not sufficient
for redemption of the shares of Series B Cumulative  Convertible Preferred Stock
to be redeemed,  then the certificates  representing such shares shall be deemed
not to be  surrendered,  such shares shall remain  outstanding and the rights of
holders of shares of Series B Cumulative  Convertible Preferred Stock thereafter
shall continue to be only those of a holder of shares of the Series B Cumulative
Convertible Preferred Stock.

                  (d)  Except as  provided  in Section 7, the shares of Series B
Cumulative  Convertible Preferred Stock shall not be subject to the operation of
any mandatory purchase, retirement or sinking fund.

         7.       Mandatory Repurchase and Repurchase at Option of the Holder.

                  (a) On the eighth  anniversary of the Original Issue Date, the
Corporation  shall  purchase  from each holder of shares of Series B  Cumulative
Convertible  Preferred  Stock  one-third of the number of shares of the Series B
Cumulative  Convertible  Preferred  Shares  held by such  holder on such  eighth
anniversary.   On  the  ninth  anniversary  of  the  Original  Issue  Date,  the
Corporation  shall  purchase  from each holder of shares of Series B  Cumulative
Convertible  Preferred  Stock  one-half  of the number of shares of the Series B
Cumulative  Convertible  Preferred  Shares  held by such  holder  on such  ninth
anniversary.   On  the  tenth  anniversary  of  the  Original  Issue  Date,  the
Corporation  shall  purchase  from each holder of shares of Series B  Cumulative
Convertible  Preferred  Stock the  number of shares of the  Series B  Cumulative
Convertible  Preferred  Shares  held by such  holder on such tenth  anniversary.
Repurchases  made  pursuant  to this  Section  7(a)  shall be  effected  on such
anniversary date (or such other day as the holder and the Corporation may agree)
and shall be for the  Redemption  Price  (defined below in Section 7(b)) plus an
amount in cash equal to the accrued and unpaid dividends thereon, whether or not
authorized  or declared,  to but excluding  the date fixed for  repurchase.  Any
shares of Series B  Cumulative  Convertible  Preferred  Stock  which  would have
accrued  but have not been paid on any shares  tendered  for  purchase  shall be
deemed to be tendered for purchase.

                  (b)      (i)      If one or more Special Defaults shall occur
at any time or from time to time on or after the Original Issue Date, each
holder of

                                       44





shares of the Series B  Cumulative  Convertible  Preferred  Stock shall have the
right, at such holder's option exercisable at any time within 120 days after the
happening of each such Special  Default,  to require the Corporation to purchase
all or any part of the shares of Series B Cumulative Convertible Preferred Stock
then  held by such  holder as such  holder  may  elect at the  Redemption  Price
(defined  below) plus,  in each case, an amount in cash equal to the accrued and
unpaid  dividends  thereon,  whether  or  not  authorized  or  declared,  to but
excluding  the date  fixed for  redemption.  Any  shares of Series B  Cumulative
Convertible  Preferred  Stock which would have accrued but have not been paid on
any shares  tendered for purchase  shall be deemed to be tendered for  purchase.
The "Redemption Price" shall be the Liquidation Preference where there have been
no Special Defaults, and -- after there has been one or more Special Defaults --
shall be 130% of the greater of the  Liquidation  Preference or the market value
of the  Common  Stock  (valued  at the  average  of the  Closing  Prices  on the
preceding  twenty (20) trading days  immediately  prior to the occurrence of the
Special Default) into which the Series B Cumulative  Convertible Preferred Stock
would then be  convertible  assuming such shares to be  immediately  convertible
(whether or not such shares were then actually convertible);

                           (ii)     A "Special Default" shall mean any of the
following  events  which occur after the  Original  Issuance  Date and while any
shares of the Series B Cumulative Convertible Preferred Stock are outstanding:

                  (1) the disbanding or other restructuring,  reorganization, or
         reconstitution  (including  without  limitation change in the number of
         members)  of the  Executive  Committee  of the Board  without the prior
         written  approval  of a  majority  of  the  members  of  the  Executive
         Committee  who were members  prior to such change (and,  for so long as
         the  holders of the Series B  Cumulative  Convertible  Preferred  Stock
         shall  have the  right to  designate  more  than  one  director  to the
         Executive  Committee  pursuant to Section  13(b) below,  including  the
         members  so  designated  by the  holders  of the  Series  B  Cumulative
         Convertible Preferred Stock);

                  (2)  the  taking  of  any  of  the  following  actions  by the
         Corporation  or the Board  without  the  approval  of a majority of the
         members of the  Executive  Committee of the Board  (whether or not such
         action was taken by the Board in view of its fiduciary  duties pursuant
         to  the  last  sentence  of  Section  3.3(A)  of  the  By-Laws  of  the
         Corporation,  as  amended):  (A)  any  borrowing  or  guarantee  by the
         Corporation  exceeding $15 million, (B) except for issuance of stock or
         stock  options  pursuant to the  Corporation's  incentive  compensation
         plans or programs,  any issuance of stock (whether common or preferred,
         whether voting or non-voting,  whether junior, pari passu, or senior to
         the Series B Cumulative Convertible Preferred Stock) other than

                                       45





         Common  Stock  of the  Corporation   in  an   aggregate   amount not
         exceeding  five  percent  (5%) of the Common  Stock of the  Corporation
         issued and  outstanding  on the Original  Issue Date, (C) any strategic
         alliance (other than a construction  joint venture) involving a capital
         commitment by the Corporation  exceeding $5 million, (D) any asset sale
         by the Corporation or lease as lessor  exceeding $5 million (other than
         equipment  dispositions  in the  normal  course of  business);  (E) any
         redemption or amendment of the Rights  (defined below) or the preferred
         stock of the Corporation  issuable upon the exercise of such Rights, or
         any  amendment of the Rights  Agreement  (defined  below),  and (F) any
         termination of (other than a termination  upon expiration) or amendment
         to the management  agreement  among the  Corporation,  Ronald Tutor and
         Tutor-Saliba Corporation;  provided, however, that for purposes of this
         Section  8(b)(ii)(2),  approval of the Executive Committee shall not be
         required  for any  decision  by the Board of  Directors  to redeem  the
         Series B Cumulative  Convertible  Preferred  Stock  pursuant to Section
         6(a);

                  (3) any change by the  Corporation  in the  composition of the
         Executive  Committee  of the Board  which  results  in  members of such
         Committee   selected  by  the  holders  of  the  Series  B   Cumulative
         Convertible Preferred Stock pursuant to Section 13(b) below being fewer
         than  the  number  of  directors  that  the  holders  of the  Series  B
         Cumulative  Convertible  Preferred Stock are then entitled to designate
         pursuant  to  that  provision  or the  failure  of the  Corporation  to
         nominate  for  director  the persons  designated  by the holders of the
         Series B Cumulative  Convertible  Preferred  Stock in  accordance  with
         Section 13(a) below; or

                  (4)  solely  for  purposes  of the  right to elect  additional
         directors  pursuant to Section  9(b) and not for  purposes of any other
         Section, the failure of the Corporation to authorize,  declare, and pay
         dividends  payable in Series B Cumulative  Convertible  Preferred Stock
         when due in accordance with Section 3.

                  (c) The date fixed for each such  repurchase  shall be (x) the
anniversary of the Original Issue Date  immediately  succeeding the notice given
pursuant to Section 7(a),  or (y) the 121st day following the  occurrence of the
Special Default giving rise to a repurchase  pursuant to Section 7(b). The place
of  payment  shall be at an  office or agency  in  Boston,  Massachusetts  fixed
therefor by the Corporation or, if not fixed, at the principal  executive office
of the Corporation.

                  (d) The Corporation shall, within 20 days of the occurrence of
a Special  Default,  give a written  notice  thereof by  registered or certified
mail,  postage prepaid,  return receipt  requested,  to the holders of record of
shares of the Series B Cumulative Convertible Preferred Stock, addressed to

                                       46





such holders at their last  addresses as shown upon the stock  transfer books of
the  Corporation.  Each such notice shall specify the Special  Default which has
occurred and the date of such  occurrence,  the place or places of payment,  the
then  effective  conversion  price  pursuant  to Section  8, the then  effective
repurchase  price  and the  date  the  right  of such  holder  to  require  such
repurchase shall  terminate.  Any notice that is mailed as herein provided shall
be conclusively  presumed to have been duly given,  whether or not the holder of
shares of Series B Cumulative  Convertible Preferred Stock receives such notice;
and failure to give such notice by mail,  or any defect in such  notice,  to the
holders of any shares shall not affect the validity of the  proceedings  for the
repurchase  of any other  shares of Series B  Cumulative  Convertible  Preferred
Stock.

                  (e) (i) On the date fixed for any such repurchase, each holder
of shares of Series B Cumulative  Convertible Preferred Stock who elects to have
shares of Series B Cumulative  Convertible  Preferred Stock held by it purchased
shall surrender the certificate  representing  such shares to the Corporation at
the place  designated  in such  notice  together  with an  election to have such
purchase  made and shall  thereupon  be  entitled  to receive  payment  therefor
provided in this Section 7. If less than all the shares  represented by any such
surrendered  certificate  are  repurchased,  a new  certificate  shall be issued
representing  the  unpurchased  shares.  Dividends with respect to the shares of
Series B Cumulative  Convertible  Preferred  Stock so  purchased  shall cease to
accrue  after  the date so  purchased,  such  shares  shall no  longer be deemed
outstanding  after  such  date  and  the  holders  thereof  shall  cease  to  be
stockholders of the  Corporation  and all rights  whatsoever with respect to the
shares so purchased shall terminate.

                 (ii) If the funds legally available for such purchase are  not
sufficient  to  purchase  all the  shares  of  Series B  Cumulative  Convertible
Preferred Stock tendered to the Corporation for purchase,  the Corporation shall
purchase  the  greatest  number  of whole  shares  for which  such  funds are so
available on a pro rata basis among all tendering  holders based on the ratio of
the number of shares  tendered  by each of them to the  aggregate  amount of all
shares so tendered,  and the certificates  representing  the unpurchased  shares
shall be deemed not to be surrendered for repurchase,  such  unpurchased  shares
shall  remain  outstanding  and the rights of the  holders of shares of Series B
Cumulative  Convertible Preferred Stock thereafter shall continue to be those of
a holder of shares  of the  Series B  Cumulative  Convertible  Preferred  Stock;
provided,  however,  the Corporation  shall thereafter be required to repurchase
all such  remaining  shares at the first date it has  sufficient  funds  legally
available  for such  purpose  at the  price it would  have paid at the date such
shares were actually tendered and the Corporation shall give notice as aforesaid
to each holder whose shares were not repurchased for such reason and such holder
shall

                                       47





thereafter  have  the  right  to elect to have  such  shares  repurchased,  such
election to be made within 30 days of receipt of such  notice.  For  purposes of
this  Section,  the  Corporation  shall be deemed not to have  sufficient  funds
legally  available  for any such  purchase if the Board of Directors  reasonably
determines  that  immediately  after such  repurchase the  Corporation  would be
insolvent.

                           (iii)  For so long as there remain shares of Series 
B Cumulative Convertible Preferred Stock that have been surrendered for 
repurchase in  accordance with this Section 7 that have not been so repurchased
by the Corporation:(1) the number of members of the Board of Directors shall be
increased by such number as is necessary to allow the election of the  directors
specified  in clause (2) of this  Section,  and (2) the  holders of the Series B
Cumulative Convertible Preferred Stock, voting separately as a class, shall have
the right to elect an  additional  number of directors to the Board of Directors
such that the Designated Directors (defined below in Section 13) who are serving
on the Board of Directors,  plus the directors elected by such holders voting as
a class under this  clause,  constitute  a majority  of Board.  The right of the
holders of the Series B Cumulative  Convertible Preferred Stock to vote for such
additional  directors  shall  terminate  when shares of the Series B  Cumulative
Convertible  Preferred Stock properly  tendered for repurchase  pursuant to this
Section 7 have been repurchased.  The term of office of all directors so elected
shall terminate  immediately upon the termination of the right of the holders of
the Series B Cumulative  Convertible Preferred Stock to vote for such additional
directors,  and  the  number  of  directors  of the  Board  of  Directors  shall
immediately thereafter be reduced.

                           (iv)     The foregoing right of the holders of the 
Series B Cumulative Convertible Preferred Stock with respect to the election of
additional  directors may be exercised at each annual meeting of stockholders or
at any special  meeting of stockholders  held for such purpose.  If the right to
elect  additional  directors  shall have  accrued to the holders of the Series B
Cumulative  Convertible Preferred Stock more than thirty (30) days preceding the
date established for the next annual meeting of  stockholders,  the President of
the  Corporation  shall,  within  five  (5)  days  after  the  delivery  to  the
Corporation at its principal  office of a written  request for a special meeting
signed by the holders of at least 10% of all outstanding  shares of the Series B
Cumulative Convertible Preferred Stock, call a special meeting of the holders of
the Series B Cumulative  Convertible  Preferred  Stock to be held as promptly as
practicable  after the delivery of such request for the purpose of electing such
additional directors.

                           (v)      The holders of the Series B Cumulative
Convertible  Preferred  Stock  voting as a class  shall have the right to remove
with or without cause at any time and replace any directors such holders shall

                                       48





have  elected  pursuant to this Section 7 and the holders of each other class of
stock of the Corporation shall not have the right to remove any such directors.

         8.       Conversion.

                  (a) Right of  Conversion.  Each  share of Series B  Cumulative
Convertible  Preferred Stock, whether issued originally or in-kind as a dividend
payment,  shall be convertible at the option of the holder thereof,  at any time
(provided, however, that where the Corporation has elected to redeem such stock,
the option of the holder  described in this  section must be exercised  prior to
the close of business on the business day prior to the date fixed for redemption
of such share as herein provided),  into fully paid and nonassessable  shares of
Common Stock and such other securities and property as hereinafter  provided, at
the rate of that number of shares of Common  Stock for each full share of Series
B  Cumulative  Convertible  Preferred  Stock  that is equal  to the  Liquidation
Preference  plus an amount in cash equal to the  accrued  and  unpaid  dividends
thereon, whether or not authorized or declared,  divided by the conversion price
applicable  per share of Common Stock.  For purposes of this Section  8(a),  the
"conversion price" applicable per share of Common Stock shall initially be equal
to Nine Dollars and Sixty-Eight and Two-Hundred Nineteen  One-Thousandths  Cents
($9.68219),   and  shall  be   adjusted   from  time  to  time  to  the  nearest
one-thousandth  of a cent after the Original  Issue Date in accordance  with the
provisions of this Section 8.

                  (b)      Conversion Procedures.

                           (i)      Any holder of shares of Series B Cumulative
Convertible  Preferred  Stock  desiring to convert such shares into Common Stock
shall  surrender the  certificate or  certificates  representing  such shares of
Series B Cumulative  Convertible  Preferred  Stock at the office of the transfer
agent for the Series B Cumulative Convertible Preferred Stock, which certificate
or certificates,  if the Corporation shall so require, shall be duly endorsed to
the Corporation or in blank, or accompanied by proper instruments of transfer to
the  Corporation or in blank,  accompanied by irrevocable  written notice to the
Corporation  that the  holder  elects  so to  convert  such  shares  of Series B
Cumulative  Convertible  Preferred  Stock and specifying the name or names (with
address or addresses) in which a certificate or certificates  evidencing  shares
of Common Stock are to be issued.

                           (ii)   Subject to Section 8(k) hereof, no payments or
adjustments in respect of dividends on shares of Series B Cumulative Convertible
Preferred Stock  surrendered for conversion or on account of any dividend on the
Common Stock issued upon  conversion  shall be made upon the  conversion  of any
shares of Series B Cumulative Convertible Preferred Stock.

                                       49






            (iii) The Corporation shall, as soon as practicable after
such  deposit  of  certificates  representing  shares  of  Series  B  Cumulative
Convertible  Preferred  Stock  accompanied  by the written notice and compliance
with any  other  conditions  herein  contained,  deliver  at such  office of the
transfer  agent  to the  person  for  whose  account  such  shares  of  Series B
Cumulative  Convertible Preferred Stock were so surrendered or to the nominee or
nominees of such person  certificates  representing the number of full shares of
Common Stock to which such person shall be entitled as aforesaid,  together with
a cash  adjustment  in respect  of any  fraction  of a share of Common  Stock as
hereinafter  provided.  Subject to the following  provisions of this  paragraph,
such  conversion  shall  be  deemed  to have  been  made as of the  date of such
surrender of the shares of Series B Cumulative Convertible Preferred Stock to be
converted,  and the  person or persons  entitled  to  receive  the Common  Stock
deliverable  upon conversion of such Series B Cumulative  Convertible  Preferred
Stock shall be treated for all purposes as the record  holder or holders of such
Common Stock on such date.

                  (c) Adjustment of Conversion  Price.  The conversion  price at
which a share of Series B Cumulative  Convertible Preferred Stock is convertible
into Common Stock shall be subject to adjustment from time to time as follows:

                           (i)  (1) In case the Corporation shall pay or make a
dividend or other  distribution on its Common Stock  exclusively in Common Stock
or shall pay or make a  dividend  or other  distribution  on any other  class of
stock of the Corporation which dividend or distribution includes Common Stock or
shall exchange outstanding Rights (as defined in Section 8(j) hereof) for shares
of Common Stock,  the  conversion  price in effect at the opening of business on
the day following the date fixed for the determination of stockholders  entitled
to receive such dividend or other  distribution or to exchange such Rights shall
be reduced  by  multiplying  such  conversion  price by a fraction  of which the
numerator shall be the number of shares of Common Stock outstanding at the close
of business on the date fixed for such  determination  and the denominator shall
be the sum of such number of shares and the total number of shares  constituting
such  dividend or other  distribution  or  exchange,  such  reduction  to become
effective  immediately  after the opening of business on the day  following  the
date fixed for such determination.

                                    (2)   In case the Corporation shall issue or
otherwise  sell or  distribute  shares of Common Stock for a  consideration  per
share in cash or property  less than the most recent  Closing Price prior to the
time of such issuance (and, if shares are issued,  sold, or distributed pursuant
to the exercise or conversion of options,  warrants,  convertible securities, or
other  rights,  the exercise or  conversion  price  thereof  when such  options,
warrants,

                                       50





convertible  securities,  or rights  were  granted  or issued  was less than the
Closing  Price  (defined  below in Section  8(h) at the time of issuance of such
options,  warrants,  convertible  securities,  or other rights),  the conversion
price then in effect shall be reduced by multiplying  such conversion price by a
fraction of which the  numerator  shall be the number of shares of Common  Stock
outstanding  immediately  prior to such issuance,  sale or distribution plus the
number of shares of Common Stock which the aggregate  consideration  received by
the Corporation for such issuance, sale or distribution (such consideration,  if
other than cash, as determined  by the Board of Directors,  whose  determination
shall be conclusive  and  described in a vote of the Board of  Directors)  would
purchase at the current market price per share and the denominator  shall be the
number of shares of Common Stock outstanding  immediately after giving effecting
to such issuance, sale or distribution.

                           (ii)     In case the Corporation shall pay or make a
dividend or other distribution on its Common Stock consisting exclusively of, or
shall otherwise issue to all or  substantially  all holders of its Common Stock,
rights or warrants  entitling  the holders  thereof to subscribe for or purchase
shares of Common  Stock at a price per share less than the then  current  market
price per share  (determined as provided in  subparagraph  (vii) of this Section
8(c))  of  the  Common  Stock  on  the  date  fixed  for  the  determination  of
stockholders  entitled to receive such rights or warrants,  the conversion price
in effect at the  opening of business  on the day  following  the date fixed for
such  determination  shall be reduced by multiplying  such conversion price by a
fraction of which the  numerator  shall be the number of shares of Common  Stock
outstanding  at the close of business  on the date fixed for such  determination
plus the number of shares of Common  Stock which the  aggregate  of the offering
price of the total number of shares of Common Stock so offered for  subscription
or purchase  would  purchase at such current  market  price and the  denominator
shall be the  number  of  shares of  Common  Stock  outstanding  at the close of
business on the date fixed for such  determination  plus the number of shares of
Common Stock so offered for  subscription or purchase,  such reduction to become
effective  immediately  after the opening of business on the day  following  the
date fixed for such determination. In case any rights or warrants referred to in
this  subparagraph  (ii) in respect of which an adjustment  shall have been made
shall expire  unexercised,  the conversion price shall be readjusted at the time
of such expiration to the conversion  price that would have been in effect if no
adjustment  had been made on account of the  distribution  or  issuance  of such
expired rights or warrants. For the purposes of this Section 8(c)(ii), if both a
Distribution  Date and a Section  11(a)(ii)  Event (as such terms are defined in
the Rights  Agreement by and between the Corporation and the First National Bank
at Boston,  dated as of September 23, 1988, as amended (the "Rights Agreement"))
shall have occurred, then the later to occur of such events shall

                                       51





be deemed to constitute an issuance of rights to purchase shares of Common
Stock.

             (iii) In case outstanding shares of Common Stock shall
be subdivided  into a greater  number of shares of Common Stock,  the conversion
price in effect at the  opening of business  on the day  following  the day upon
which such subdivision becomes effective shall be proportionately  reduced,  and
conversely,  in case  outstanding  shares of Common Stock shall each be combined
into a smaller number of shares of Common Stock,  the conversion price in effect
at the  opening  of  business  on the day  following  the day  upon  which  such
combination becomes effective shall be proportionately increased, such reduction
or  increase,  as the case may be, to  become  effective  immediately  after the
opening of business on the day following the day upon which such  subdivision or
combination becomes effective.

                           (iv)  (1) In case the Corporation shall, by dividend
or otherwise,  make a Section  8(c)(iv)  Distribution  (defined below in Section
8(h)) to all or  substantially  all holders of its Common Stock,  the conversion
price  shall be  reduced so that the same shall  equal the price  determined  by
multiplying the conversion  price in effect  immediately  following the close of
business on the Determination Date (as defined in Section 8(h)) by a fraction of
which the numerator  shall be the current market price per share  (determined as
provided in subparagraph  (vii) of this Section 8(c)) of the Common Stock on the
Determination  Date less the fair market  value (as  determined  by the Board of
Directors, whose determination shall be conclusive and described in a resolution
of the Board of Directors), on the date of such effectiveness, of the portion of
the Section  8(c)(iv)  Distribution  so  distributed  applicable to one share of
Common Stock and the denominator shall be such current market price per share of
the Common Stock,  such reduction to become effective  immediately  prior to the
opening of business on the day following the Determination Date. If the Board of
Directors so determines  as aforesaid the fair market value of any  distribution
for purposes of this subparagraph (iv) by reference to the actual or when-issued
trading market for any securities comprising such distribution, it must in doing
so consider the prices in such market over the same period used in computing the
current market price per share of Common Stock pursuant to subparagraph (vii) of
this Section 8(c).

                                    (2)    Notwithstanding the foregoing, if the
Corporation  elects to reserve,  for distribution to the holders of the Series B
Cumulative  Convertible  Preferred  Stock upon the  conversion  of the shares of
Series  B  Cumulative   Convertible   Preferred  Stock,  the  evidences  of  the
Corporation's  indebtedness,  shares of any class of stock, or assets that would
have been  distributed  to the  holders of the Series B  Cumulative  Convertible
Preferred Stock if they had converted their shares into shares of Common Stock

                                       52





so that any such holder  converting  shares of Series B  Cumulative  Convertible
Preferred Stock will receive upon such conversion,  in addition to the shares of
the Common Stock to which such holder is  entitled,  the amount and kind of such
evidences of the  Corporation's  indebtedness,  shares of any class of stock, or
assets  which such holder  would have  received if such holder had,  immediately
prior to the Determination  Date for such distribution of securities,  converted
its shares of Series B Cumulative Convertible Preferred Stock into Common Stock,
the fair market value of the securities shall, for purposes of this subparagraph
(iv), be deemed to be zero.

                           (v) Subject to the last sentence of this subparagraph
(v),  in case the  Corporation  shall,  by dividend  or  otherwise,  at any time
distribute  to  all  holders  of its  Common  Stock  cash  (excluding  any  cash
representing  an amount per share of  capital  stock of the  Corporation  to the
extent such cash does not  constitute  an  Extraordinary  Equity  Payment),  the
conversion  price  shall be  reduced  so that the same  shall  equal  the  price
determined by multiplying the conversion  price in effect  immediately  prior to
the  effectiveness  of the  conversion  price  reduction  contemplated  by  this
subparagraph  (v) by a  fraction  of which the  numerator  shall be the  current
market price per share  (determined  as provided in  subparagraph  (vii) of this
Section 8(c)) of the Common Stock on the  Determination  Date less the amount of
cash so distributed  and not excluded as above provided  applicable to one share
of Common Stock and the denominator shall be such current market price per share
of the Common Stock, such reduction to become effective immediately prior to the
opening of business on the day following the Determination Date. Notwithstanding
the foregoing,  if the Corporation  elects to reserve the cash to be distributed
for distribution to the holders of the Series B Cumulative Convertible Preferred
Stock  upon the  conversion  of the  shares of Series B  Cumulative  Convertible
Preferred Stock so that any such holder converting shares of Series B Cumulative
Convertible  Preferred Stock will receive upon such  conversion,  in addition to
the shares of the Common Stock to which such holder is  entitled,  the amount of
cash which such holder would have received if such holder had, immediately prior
to the Determination Date for such distribution of cash, converted its shares of
Series B Cumulative  Convertible  Preferred  Stock into Common  Stock,  then the
conversion price shall not be so reduced.

                           (vi)   In case a tender or exchange offer made by the
Corporation or any subsidiary of the  Corporation  for all or any portion of the
Corporation's  Common Stock shall expire and such tender or exchange offer shall
involve the payment by the Corporation or such subsidiary of  consideration  per
share of Common Stock having a fair market value (as  determined by the Board of
Directors, whose determination shall be conclusive and described in a resolution
of the Board of Directors) at the last time (the

                                       53





"Expiration  Time")  tenders or exchanges may be made pursuant to such tender or
exchange  offer (as it shall have been amended) that exceeds the current  market
price per share  (determined as provided in  subparagraph  (vii) of this Section
8(c)) of the Common  Stock on the Trading  Day next  succeeding  the  Expiration
Time,  the  conversion  price  shall be reduced so that the same shall equal the
price determined by multiplying the conversion price in effect immediately prior
to the Expiration  Time by a fraction of which the numerator shall be the number
of shares of Common  Stock  outstanding  (including  any  tendered or  exchanged
shares) on the Expiration  Time multiplied by the current market price per share
(determined  as  provided in  subparagraph  (vii) of this  Section  8(c)) of the
Common  Stock on the Trading Day next  succeeding  the  Expiration  Time and the
denominator  shall  be the sum of (x)  the  fair  market  value  (determined  as
aforesaid) of the aggregate  consideration  payable to stockholders based on the
acceptance  (up to any maximum  specified in the terms of the tender or exchange
offer) of all shares  validly  tendered or exchanged and not withdrawn as of the
Expiration  Time (the shares deemed so accepted,  up to any such maximum,  being
referred  to as the  "Purchased  Shares")  and (y) the  product of the number of
shares of Common Stock outstanding (less any Purchased Shares) on the Expiration
Time  and the  current  market  price  per  share  (determined  as  provided  in
subparagraph  (vii) of this Section 8(c)) of the Common Stock on the Trading Day
next  succeeding  the  Expiration  Time,  such  reduction  to  become  effective
immediately prior to the opening of business on the day following the Expiration
Time.

                           (vii)    For purposes of any computation under this
section, the current market price per share of Common Stock on any date shall be
deemed to be the  volume-weighted  average trading price of the Common Stock for
the five-day  period before the earlier of the day in question and the "ex" date
with  respect  to any  issuance  or  distribution  requiring  such  computation;
provided,  however,  that for  purposes  of clause  (3) of this  paragraph,  the
current  market  price per share  shall be  deemed  to be the  volume-  weighted
average  trading price of the Common Stock for the five-day period after the "ex
date." For purposes of this  subparagraph  (vii),  the term "ex" date,  (1) when
used with respect to any issuance or distribution, means the first date on which
the Common Stock trades regular way on the relevant  exchange or in the relevant
market from which the Closing  Price was  obtained  without the right to receive
such issuance or distribution,  (2) when used with respect to any subdivision or
combination of shares of Common Stock,  means the first date on which the Common
Stock  trades  regular way on such  exchange or in such market after the time at
which such subdivision or combination becomes effective,  and (3) when used with
respect  to any  tender or  exchange  offer,  means the first  date on which the
Common  Stock  trades  regular way on such  exchange or in such market after the
Expiration Time of such offer.


                                       54





                          (viii) The Corporation may make such reductions in the
conversion  price,  in addition to those  required by  subparagraphs  (i), (ii),
(iii),  (iv), (v) and (vi) of this Section 8(c), as it considers to be advisable
to avoid or  diminish  any income  tax to  holders of Common  Stock or rights to
purchase  Common Stock  resulting from any dividend or distribution of stock (or
rights to  acquire  stock)  or from any event  treated  as such for  income  tax
purposes.

                           (ix)   No adjustment in the conversion price shall be
required  unless  such  adjustment  would  require an increase or decrease of at
least 1% in the conversion price; provided,  however, that any adjustments which
by reason of this subparagraph (ix) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment.

                           (x)      Notwithstanding any other provision of this
Section 8 and without  implication that the contrary would otherwise be true, no
issuance,  dividend or distribution requiring adjustment of the conversion price
pursuant to Section  8(c) hereof  shall be deemed to have  occurred in the event
that, upon,  following or in connection with the redemption or expiration of the
Rights or the termination of the Rights Agreement or otherwise,  the Corporation
enters  into a new  agreement  that is  comparable  in purpose and effect to the
Rights Agreement (as determined by the Board of Directors,  whose  determination
shall be conclusive)  and  distributes  rights to purchase  Preferred  Stock (or
other similar stock  purchase  rights under such  agreement that are attached to
the Common Stock) to the holders of Common Stock.

                           (xi)     Whenever the conversion price is adjusted as
herein provided:

                  (1)      the Corporation shall compute the adjusted conversion
                           price and shall prepare a  certificate  signed by the
                           Treasurer  of  the  Corporation   setting  forth  the
                           adjusted  conversion  price and showing in reasonable
                           detail the acts upon which such  adjustment is based,
                           and such  certificate  shall  forthwith be filed with
                           the  transfer  agent  for  the  Series  B  Cumulative
                           Convertible Preferred Stock; and

                  (2)      a  notice  stating  the  conversion  price  has  been
                           adjusted and setting  forth the  adjusted  conversion
                           price shall  forthwith  be  required,  and as soon as
                           practicable  after it is required,  such notice shall
                           be mailed by the Corporation to all record holders of
                           shares of Series B Cumulative  Convertible  Preferred
                           Stock at their last  addresses  as they shall  appear
                           upon the stock transfer books of the Corporation.

                  (d)      No Fractional Shares.  No fractional shares or scrip
representing fractional shares of Common Stock shall be issued upon conversion

                                       55





of Series B Cumulative Convertible Preferred Stock. If more than one certificate
representing shares of Series B Cumulative  Convertible Preferred Stock shall be
surrendered  for  conversion at one time by the same holder,  the number of full
shares  issuable upon  conversion  thereof shall be computed on the basis of the
aggregate number of shares of Series B Cumulative Convertible Preferred Stock so
surrendered.  Instead  of any  fractional  share  of  Common  Stock  that  would
otherwise  be  issuable  upon  conversion  of any shares of Series B  Cumulative
Convertible  Preferred  Stock,  the  Corporation  shall pay a cash adjustment in
respect of such  fractional  interest in an amount equal to the same fraction of
the  market  price  per share of Common  Stock  (as  determined  by the Board of
Directors or in any manner prescribed by the Board of Directors,  which, so long
as the Common  Stock is listed on the Primary  Exchange,  shall be the  reported
last sale price regular way on the Primary Exchange) at the close of business on
the day of conversion.

                  (e)  Reclassification,   Consolidation,  Merger,  or  Sale  of
Assets. If any capital  reorganization or  reclassification of the capital stock
of the  Corporation,  or consolidation or merger of the Corporation with another
corporation,  or the sale of all or  substantially  all of its assets to another
corporation  shall be effected in such a way that  holders of Common Stock shall
be entitled to receive stock, securities, cash or other property with respect to
or in exchange for Common Stock,  then,  as a condition of such  reorganization,
reclassification,  consolidation,  merger or sale, lawful and adequate provision
shall  be made  whereby  the  holders  of the  Series B  Cumulative  Convertible
Preferred  Stock shall have the right to acquire and receive upon  conversion of
the Series B Cumulative  Convertible  Preferred Stock, which right shall be pari
passu  with the rights of  holders  of Parity  Dividend  Stock and senior to the
rights of the holders of Junior Dividend Stock and Junior Liquidation Stock (but
after and subject to the rights of holders of Senior  Dividend  Stock and Senior
Liquidation  Stock,  if any),  such shares of stock,  securities,  cash or other
property issuable or payable (as part of the  reorganization,  reclassification,
consolidation, merger or sale) with respect to or in exchange for such number of
outstanding  shares of Common Stock as would have been received upon  conversion
of the Series B Cumulative  Convertible  Preferred Stock at the conversion price
then in effect,  whether or not such stock is then convertible.  The Corporation
will not  effect any such  consolidation,  merger or sale,  unless  prior to the
consummation  thereof the successor  corporation (if other than the Corporation)
resulting from such  consolidation or merger or the corporation  purchasing such
assets shall assume by written  instrument  in  reasonable  and  customary  form
mailed or  delivered  to the  holders  of the  Series B  Cumulative  Convertible
Preferred  Stock at the last address of each such holder  appearing on the books
of the Corporation, the obligation to deliver to each such holder such shares of
stock,  securities  or assets as, in accordance  with the foregoing  provisions,
such holder may be entitled to purchase.

                                       56






                  (f)      Reservation of Shares; Transfer Taxes; Etc.

                  (i)      The  Corporation  shall at all times reserve and keep
                           available,  out of its authorized and unissued stock,
                           solely for the purpose of effecting the conversion of
                           the Series B Cumulative  Convertible Preferred Stock,
                           such  number of shares of its Common  Stock or Common
                           Stock free of preemptive rights as shall from time to
                           time be  sufficient  to effect the  conversion of all
                           shares of Series B Cumulative  Convertible  Preferred
                           Stock from time to time outstanding.  The Corporation
                           shall from time to time, in accordance  with the laws
                           of the State of Massachusetts, increase the number of
                           authorized  shares of Common Stock if at any time the
                           number of shares of  authorized  and unissued  Common
                           Stock   shall  not  be   sufficient   to  permit  the
                           conversion  of all the  then  outstanding  shares  of
                           Series B Cumulative Convertible Preferred Stock.

                  (ii)     If any shares of Common Stock required to be reserved
                           for purposes of conversion of the Series B Cumulative
                           Convertible   Preferred   Stock   hereunder   require
                           registration  with or  approval  of any  governmental
                           authority  under any Federal or State law before such
                           shares may be issued upon conversion, the Corporation
                           will in good faith and as  expeditiously  as possible
                           endeavor to cause such  shares to be duly  registered
                           or approved,  as the case may be. If the Common Stock
                           is listed on the American Stock Exchange or any other
                           national  securities  exchange or national  quotation
                           service, the Corporation will list and keep listed on
                           such exchange,  upon official notice of issuance, all
                           shares of Common Stock  issuable  upon  conversion of
                           the  shares  of  Series  B   Cumulative   Convertible
                           Preferred Stock.

                  (iii)    The Corporation  shall pay any and all issue or other
                           taxes  that may be payable in respect of any issue or
                           delivery of shares of Common Stock on  conversion  of
                           the Series B Cumulative  Convertible Preferred Stock.
                           The Corporation  shall not,  however,  be required to
                           pay any tax which may be  payable  in  respect of any
                           transfer  involved in the issue or delivery of Common
                           Stock (or other securities or assets) in a name other
                           than that in which the shares of Series B  Cumulative
                           Convertible   Preferred   Stock  so  converted   were
                           registered,  and no such issue or  delivery  shall be
                           made  unless  and until the  person  requesting  such
                           issue has paid to the  Corporation the amount of such
                           tax or has  established,  to the  satisfaction of the
                           Corporation, that such tax has been paid.

                                       57




                  (g)      Prior Notice of Certain Events. In case:

                  (i)      the   Corporation   shall   declare  or  authorize  a
                           redemption or repurchase of in excess of five percent
                           of the then outstanding shares of Common Stock; or

                  (ii)     the  Corporation  shall authorize the granting to all
                           holders  of Common  Stock of rights  or  warrants  to
                           subscribe  for or purchase any shares of stock of any
                           class or of any other rights or warrants  (other than
                           pursuant to the Rights  Agreement  or,  following the
                           redemption   or  expiration  of  the  Rights  or  the
                           termination   of  the  Rights   Agreement,   any  new
                           shareholder  rights  agreement  that is comparable in
                           purpose and effect to the Rights Agreement); or

                  (iii)    of any reclassification of Common Stock (other than a
                           subdivision or combination of the outstanding  Common
                           Stock, or a change in par value, or from par value to
                           no par value, or from no par value to par value),  or
                           of  any   consolidation   or   merger  to  which  the
                           Corporation  is a party and for which approval of any
                           stockholders of the Corporation shall be required, or
                           of the sale or transfer of all or  substantially  all
                           of the assets of the Corporation or of any compulsory
                           share exchange  whereby the Common Stock is converted
                           into other securities, cash or other property; or

                  (iv)     of  the   voluntary   or   involuntary   dissolution,
                           liquidation or winding up of the Corporation;

then the  Corporation  shall cause to be filed with the  transfer  agent for the
Series B Cumulative Convertible Preferred Stock, and shall cause to be mailed to
the holders of record of the Series B Cumulative Convertible Preferred Stock, at
their last  addresses as they shall appear upon the stock  transfer books of the
Corporation,  at  least  fifteen  days  prior  to  the  applicable  record  date
hereinafter specified, a notice stating, as the case may be, (x) the record date
(if any) for the purpose of such dividend, distribution,  redemption, repurchase
or granting of rights or warrants  or, if no record date is to be set,  the date
as of which the  holders  of  Common  Stock of  record  to be  entitled  to such
dividend,  distribution,  redemption, rights or warrants are to be determined or
(y) the  date on  which  such  reclassification,  consolidation,  merger,  sale,
transfer, share exchange, dissolution,  liquidation or winding up is expected to
become effective,  and the date, if any, as of which it is expected that holders
of shares of Common Stock of record  shall be entitled to exchange  their shares
of  Common  Stock  for  securities  or  other  property  deliverable  upon  such
reclassification,   consolidation,   merger,  sale,  transfer,  share  exchange,
dissolution,  liquidation  or winding up (but no failure to mail such  notice or
any defect therein or in the

                                       58





mailing thereof shall affect the validity of the corporate action required to be
specified in such notice).

                  (h)      Definitions. The following definitions shall apply to
                           terms used in this Section 8:

                  (i)      "Closing  Price"  on any day shall  mean the  closing
                           sale  price  regular  way on such day or,  in case no
                           such sale takes place on such day, the average of the
                           reported closing bid and asked prices regular way, in
                           each case on the Primary Exchange,  or, if not quoted
                           or listed or  admitted  to  trading  on any  national
                           securities  exchange or quotation system, the average
                           of the  closing  bid and asked  prices of the  Common
                           Stock on the  over-the-counter  market  on the day in
                           question as reported by the National Quotation Bureau
                           Incorporated,   or  a  similarly  generally  accepted
                           reporting  service,  or if not so  available  in such
                           manner,  as furnished by any American  Stock Exchange
                           member firm  selected  from time to time by the Board
                           of Directors of the Corporation for that purpose.

                  (ii)     "Determination  Date" shall mean, with respect to any
                           dividend,  distribution or other transaction or event
                           in which the  holders of Common  Stock have the right
                           to receive any cash,  securities or other property or
                           assets  or  in  which  the  Common  Stock  (or  other
                           applicable  security) is  exchanged  for or converted
                           into any  combination  of cash,  securities  or other
                           property,   the  date  fixed  for   determination  of
                           stockholders   entitled   to   receive   such   cash,
                           securities or other property or assets  (whether such
                           date  is  fixed  by  the  Board  of  Directors  or by
                           statute, contract or otherwise).

                  (iii)    "Extraordinary Equity Payment" shall mean:

                           (1)      the  declaration  or payment on or after the
                                    Original Issue Date by the  Corporation,  or
                                    any of its  subsidiaries  of any dividend or
                                    distribution  on any  class or series of its
                                    stock other than:

                                    (A) any  dividend or  distribution  from one
                           subsidiary  of  the  Corporation  to  a  wholly-owned
                           subsidiary of the Corporation or from a subsidiary of
                           the Corporation to the Corporation; provided that all
                           of such dividend paid or  distribution  made,  net of
                           applicable  withholding  taxes,  is  received  by the
                           Corporation, or such recipient subsidiary;

                                    (B) any regularly  scheduled (whether or not
                           overdue)   periodic   cash  dividend  on  the  $21.25
                           Preferred  Stock and Series B Cumulative  Convertible
                           Preferred  Stock in accordance with the terms thereof
                           as in effect on the Original Issue Date;


                                       59





                                    (C) any cash  dividends  on the Common Stock
                           or other capital  stock after  September 1, 2001 that
                           do not  exceed in  aggregate  more  than  twenty-five
                           percent (25%) of the  Corporation's  consolidated net
                           income   available   for   distribution   to   common
                           shareholders (after preferred  dividends);  provided,
                           however, that the Corporation shall have elected, for
                           the  preceding  four  fiscal  quarters,  to pay  cash
                           dividends  on the  Series  B  Cumulative  Convertible
                           Preferred  Stock  and  shall  have  paid in full such
                           dividends in cash when due;

                           (2)      any repurchases, redemptions, retirements or
                                    other acquisitions directly or indirectly by
                                    the  Corporation or any of its  subsidiaries
                                    on or after the  Original  Issue Date of any
                                    stock  of  the  Corporation  or  any  of its
                                    subsidiaries   (other  than  a  wholly-owned
                                    subsidiary)   (other  than   redemptions  or
                                    repurchases   of  the  Series  B  Cumulative
                                    Convertible  Preferred  Stock in  accordance
                                    with Sections 6 and 7).

                  (iv)  "Fundamental  Change"  shall mean the  occurrence of any
         transaction  or event in connection  with a plan or agreement to which,
         in either case,  the  Corporation  is a party  pursuant to which all or
         substantially all of the shares of Common Stock shall be exchanged for,
         converted into,  acquired for or constitute solely the right to receive
         cash,  securities,  property  or other  assets  (whether by means of an
         exchange  offer,  liquidation,  tender  offer,  consolidation,  merger,
         combination,   reclassification,    recapitalization   or   otherwise);
         provided,  however,  in the case of a plan involving more than one such
         transaction  or event,  for purposes of  adjustment  of the  conversion
         price,  such  Fundamental  Change shall be deemed to have occurred when
         substantially  all of the  shares  of Common  Stock of the  Corporation
         shall be exchanged  for,  converted  into or acquired for or constitute
         solely the right to receive cash, securities, property or other assets,
         but the  adjustment  shall be based  upon the  consideration  which the
         holders of Common  Stock  received  in such  transaction  or event as a
         result  of which  more than 50% of the  shares  of Common  Stock of the
         Corporation shall have been exchanged for,  converted into, or acquired
         for or  constitute  solely  the  right  to  receive  cash,  securities,
         property or other assets;  provided,  further,  that such term does not
         include  (i) any such  transaction  or event in which  the  Corporation
         and/or  any of its  subsidiaries  are  the  issuers  of all  the  cash,
         securities,  property or other assets exchanged,  acquired or otherwise
         issued in such  transaction or event,  or (ii) any such  transaction or
         event in which the holders of Common  Stock  receive  securities  of an
         issuer  other  than the  Corporation  if,  immediately  following  such
         transaction  or event,  such holders hold a majority of the  securities
         having the power to vote  normally in the election of directors of such
         other issuer  outstanding  immediately  following  such  transaction or
         other event.


                                       60





                           (v)      "Section 8(c)(iv) Distribution" shall mean
evidences of the  Corporation's  indebtedness,  shares of any class of stock, or
assets,  including securities,  but excluding any rights or warrants referred to
in  subparagraph  (ii) of Section 8(c),  excluding any dividend or  distribution
paid in  cash,  and  excluding  any  dividend  or  distribution  referred  to in
subparagraph (i) of Section 8(c).

                           (vi)     "Trading Day" shall mean a day on which the
national  securities  exchange  or the NASDAQ  National  Market  System  used to
determine  the  Closing  Price is open for the  transaction  of  business or the
reporting of trades.

                  (i) Dividend or Interest  Reinvestment Plans.  Notwithstanding
the foregoing provisions, the issuance of any shares of Common Stock pursuant to
any plan  providing  for the  reinvestment  of dividends or interest  payable on
securities of the Corporation and the investment of additional  optional amounts
in shares of Common Stock under any such plan, and the issuance of any shares of
Common  Stock or options  or rights to  purchase  such  shares  pursuant  to any
employee  benefit plan or program of the  Corporation or pursuant to any option,
warrant,  right or exercisable,  exchangeable or convertible  security issued or
outstanding on the Original Issue Date (except as expressly  provided in Section
8(c)(i) or 8(c)(ii) with respect to certain events under the Rights  Agreement),
and any  issuance  of Rights  (defined  below) or other  rights  referred  to in
Section 8(c)(x),  shall not be deemed to constitute an issuance of Common Stock,
options,   warrants,   rights,  or  exercisable,   exchangeable  or  convertible
securities by the  Corporation  or any of its  subsidiaries  to which any of the
adjustment  provisions  described  above in this Section 8 applies.  There shall
also be no  adjustment  of the  conversion  price in case of the issuance of any
stock  (or  options,   warrants,  rights,  or  securities  convertible  into  or
exchangeable or exercisable for stock) of the Corporation except as specifically
described  in this  Section 8. If any action  would  require  adjustment  of the
conversion  price pursuant to more than one of the provisions  described  above,
only one  adjustment  shall be made and such  adjustment  shall be the amount of
adjustment  which has the  highest  absolute  value to the  holders  of Series B
Cumulative Convertible Preferred Stock.

                  (j)  Preferred  Share  Purchase  Rights.  So long as Preferred
Share Purchase Rights, of the kind authorized and declared on September 23, 1988
and  distributed by the  Corporation in September 1988 as the same have been and
may hereafter be amended  ("Rights"),  are attached to the outstanding shares of
Common  Stock  of the  Corporation,  each  share of  Common  Stock  issued  upon
conversion  of the shares of Series B  Cumulative  Convertible  Preferred  Stock
prior to the  earliest  of any  Distribution  Date  (as  defined  in the  Rights
Agreement), the date of redemption of the Rights or the date of

                                       61





expiration  of the Rights  shall be issued with Rights in an amount equal to the
amount of Rights then attached to each such outstanding share of Common Stock.

                  (k) Certain  Additional Rights. In case the Corporation shall,
by dividend  or  otherwise,  authorize,  declare or make a  distribution  on its
Common Stock referred to in Section 8(c)(iv) or Section  8(c)(v),  the holder of
each  share  of  Series  B  Cumulative  Convertible  Preferred  Stock,  upon the
conversion thereof subsequent to the close of business on the date fixed for the
determination of stockholders entitled to receive such distribution and prior to
the  effectiveness  of the  conversion  price  adjustment  in  respect  of  such
distribution pursuant to Section 8(c)(iv) or Section 8(c)(v),  shall be entitled
to  receive  for each  share of Common  Stock  into which such share of Series B
Cumulative  Convertible  Preferred  Stock  is  converted,  the  portion  of  the
evidences  of  indebtedness,  shares of stock,  cash and  assets so  distributed
applicable  to one  share of  Common  Stock;  provided,  however,  that,  at the
election of the Corporation  (whose election shall be evidenced by a vote of the
Board of Directors)  with respect to all holders so converting,  the Corporation
may, in lieu of distributing to such holder any portion of such distribution not
consisting of cash or securities of the  Corporation,  pay such holder an amount
in cash equal to the fair market value  thereof (as  determined  by the Board of
Directors,  whose  determination  shall be conclusive and described in a vote of
the Board of  Directors).  If any  conversion  of a share of Series B Cumulative
Convertible  Preferred  Stock described in the  immediately  preceding  sentence
occurs prior to the payment date for a  distribution  to holders of Common Stock
which the holder of the share of Series B Cumulative Convertible Preferred Stock
so converted is entitled to receive in accordance with the immediately preceding
sentence,  the  Corporation  may  elect  (such  election  to be  evidenced  by a
resolution  of the Board of  Directors)  to distribute to such holder a due bill
for the evidences of indebtedness, shares of stock, cash or assets to which such
holder is so  entitled;  provided  that  such due bill (i) meets any  applicable
requirements of the principal  national  securities  exchange or other market on
which the Common Stock is then traded and (ii)  requires  payment or delivery of
such evidences of  indebtedness,  shares of stock,  cash or assets no later than
the date of payment or  delivery  thereof to holders of Common  Stock  receiving
such  distribution.  The rights  provided in this  Section  8(k) with respect to
distribution referred to in Section 8(c)(iv) or Section 8(c)(v) shall be in lieu
of,  and not in  addition  to,  the  rights  accorded  to  holders  of  Series B
Cumulative Convertible Preferred Stock in those Sections.

                  (l) Other. Notwithstanding any other provision in this Section
8 to  the  contrary,  if  the  Corporation  shall,  by  dividend  or  otherwise,
authorize,  declare or make a  distribution  on its Common Stock  referred to in
Section 8(c)(iv) and such distribution shall include shares of stock of one or

                                       62





more  corporations that immediately prior to such distribution was or would have
been a  subsidiary  (a  "Spin-Off"),  the  holder  of each  share  of  Series  B
Cumulative Convertible Preferred Stock shall be entitled to receive its pro rata
share of the  securities  distributed in the Spin-Off as if such holder had been
the  holder of record of the  number of shares of Common  Stock  into  which the
Series B Cumulative  Convertible  Preferred Stock would be convertible  (but for
any restrictions on convertibility  contained in this Certificate of Vote) as of
the record date for such distribution.  The rights provided in this Section 8(l)
with  respect  to  Spin-Offs  shall be in lieu of, and not in  addition  to, the
rights  accorded to holders of Series B Cumulative  Convertible  Preferred Stock
with respect to Spin-Offs in Section 8(c)(iv).

         9.       Voting Rights.

                  (a)  General.  The  holders  of shares of Series B  Cumulative
Convertible  Preferred  Stock shall each  initially  have Twenty and  Sixty-Five
Thousand Six Hundred and Forty-Eight  Hundred-Thousandths  (20.65648)  votes for
each share held, which such shares shall be voted as a class with the holders of
the Common  Stock on all matters on which the Common  Stock may vote,  except as
set forth below.  Upon the  occurrence of any event that causes an adjustment to
the conversion  price pursuant to Section 8(c), the number of votes possessed by
each share of Series B Cumulative  Convertible Stock shall be adjusted such that
the number of votes  possessed  by each such share  immediately  after the event
giving rise to the adjustment under Section 8(c) shall be the number, rounded to
the nearest one-hundred thousandth,  equal to the Liquidation Preference divided
by the conversion  price  immediately  after such event.  Any shares of Series B
Cumulative  Convertible  Preferred  Stock held by the  Corporation or any entity
controlled by the Corporation  shall not have voting rights  hereunder and shall
not be counted in determining the presence of a quorum.

                  (b)      Special Default Voting Rights.

                      (i)      Whenever a Special Default exists, (1) the number
of members of the Board of  Directors  shall be  increased  by such number as is
necessary  to allow the election of the  directors  specified in clause (2), and
(2) the holders of the Series B Cumulative  Convertible  Preferred Stock, voting
separately  as a class,  shall have the right to elect an  additional  number of
directors to the Board of Directors such that Designated  Directors  selected by
the holders of the Series B Cumulative  Convertible  Preferred  Stock,  plus the
directors  elected  by  such  holders  voting  as a  class  under  this  clause,
constitute a majority of Board.  Notwithstanding  the  foregoing  sentence,  the
holders  of  the  Series  B  Cumulative   Convertible  Preferred  Stock  (voting
separately as a class) will not have the right to vote for additional  directors
pursuant to this Section

                                       63





9(b) where (x) such  holders  have  exercised  their  right to elect  additional
directors  pursuant  to Section  7(e)(iii),  and (y) such  additional  directors
continue to serve as such.  The right of the holders of the Series B  Cumulative
Convertible  Preferred  Stock  to  vote  for  such  additional  directors  shall
terminate  at the  earlier to occur of (A) when such  Special  Default no longer
exists or (ii) two years after the election of directors  pursuant to clause (2)
of the first  sentence of this  Section.  The term of office of all directors so
elected shall  terminate  immediately  upon the  termination of the right of the
holders of the Series B Cumulative  Convertible Preferred Stock to vote for such
additional  directors,  and the number of  directors  of the Board of  Directors
shall immediately thereafter be reduced.

                     (ii)     The foregoing right of the holders of the Series B
Cumulative   Convertible  Preferred  Stock  with  respect  to  the  election  of
additional  directors may be exercised at each annual meeting of stockholders or
at any special  meeting of stockholders  held for such purpose.  If the right to
elect  directors  shall have  accrued to the holders of the Series B  Cumulative
Convertible  Preferred  Stock  more than  thirty  (30) days  preceding  the date
established  for the next annual meeting of  stockholders,  the President of the
Corporation shall, within five (5) days after the delivery to the Corporation at
its principal  office of a written  request for a special  meeting signed by the
holders of at least 10% of all  outstanding  shares of the  Series B  Cumulative
Convertible Preferred Stock, call a special meeting of the holders of the Series
B Cumulative  Convertible  Preferred Stock to be held as promptly as practicable
after the delivery of such request for the purpose of electing  such  additional
directors.

                           (iii)    The holders of the Series B Cumulative
Convertible  Preferred  Stock referred to above voting as a class shall have the
right to remove with or without cause at any time and replace any directors such
holders shall have elected pursuant to this Section 9(c) and the holders of each
other class of stock of the  Corporation  shall not have the right to remove any
such directors.

                  (c) Class Voting Rights. So long as any shares of the Series B
Cumulative  Convertible  Preferred Stock are outstanding,  the Corporation shall
not,  directly or  indirectly,  without the  affirmative  vote or consent of the
holders of at least 66 2/3% (unless a higher  percentage  shall then be required
by applicable law or the  Corporation's  Articles) of all outstanding  shares of
the Series B  Cumulative  Convertible  Preferred  Stock voting  separately  as a
class: (i) amend, alter or repeal any provision of the Articles,  Certificate of
Vote, or the bylaws of the Corporation, if such amendment,  alteration or repeal
would alter the contract rights,  as expressly set forth herein, of the Series B
Cumulative Convertible Preferred Stock or otherwise to adversely affect the

                                       64





rights of the holders  thereof or the holders of the Common Stock,  (ii) create,
authorize  or  issue,  or amend the terms of in a manner  adversely  affect  the
rights of the holders the Series B Cumulative  Convertible  Preferred  Stock, or
reclassify  shares of any authorized stock of the Corporation  into, or increase
the authorized amount of, any Senior Dividend Stock,  Senior  Liquidation Stock,
Parity Dividend Stock, or Parity  Liquidation Stock or any security  convertible
into such senior or Parity Stock, or (iii) approve a Fundamental Change.

         10.  Outstanding  Shares. For purposes of this Certificate of Vote, all
shares  of  Series  B  Cumulative  Convertible  Preferred  Stock  issued  by the
Corporation  shall be  deemed  outstanding  except  (i) from the date  fixed for
redemption  pursuant  to  Section 6 hereof,  all  shares of Series B  Cumulative
Convertible  Preferred  Stock  that  have been so called  for  redemption  under
Section 6, to the extent provided thereunder; (ii) from the date of surrender of
certificates  representing shares of Series B Cumulative  Convertible  Preferred
Stock, all shares of Series B Cumulative  Convertible  Preferred Stock converted
into Common Stock or  repurchased  pursuant to Section 7 hereof;  and (iii) from
the date of  registration  of  transfer,  all  shares  of  Series  B  Cumulative
Convertible   Preferred   Stock  held  of  record  by  the  Corporation  or  any
majority-owned subsidiary of the Corporation.

         11.      Transfer Restrictions.

                  (a) Legends on Series B Cumulative Convertible Preferred Stock
and Common Stock.  The certificates  representing  shares of Series B Cumulative
Convertible  Preferred Stock shall,  unless  otherwise agreed by the Corporation
and the holders of any such  certificates,  bear a legend  substantially  to the
following effect:

         "THE SHARES REPRESENTED BY THIS CERTIFICATE AND ANY SECURITIES ISSUABLE
         UPON  CONVERSION  OR EXCHANGE  HEREOF MAY NOT BE OFFERED OR SOLD EXCEPT
         PURSUANT  TO  (i)  AN  EFFECTIVE   REGISTRATION   STATEMENT  UNDER  THE
         SECURITIES   ACT  OF  1933,  OR  (ii)  AN  APPLICABLE   EXEMPTION  FROM
         REGISTRATION  THEREUNDER.  ANY  SALE  PURSUANT  TO  CLAUSE  (ii) OF THE
         PRECEDING  SENTENCE  MUST  BE  ACCOMPANIED  BY AN  OPINION  OF  COUNSEL
         REASONABLY  SATISFACTORY TO PERINI  CORPORATION TO THE EFFECT THAT SUCH
         EXEMPTION FROM  REGISTRATION IS AVAILABLE IN CONNECTION WITH SUCH SALE.
         IN  ADDITION,  THE  VOTING,  SALE,  ASSIGNMENT,   TRANSFER,  PLEDGE  OR
         HYPOTHECATION OF THE SHARES REPRESENTED BY

                                       65





         THIS  CERTIFICATE  IS  FURTHER  SUBJECT  TO  RESTRIC  TIONS  WHICH  ARE
         CONTAINED  IN  THE  RESTATED   ARTICLES  OF   ORGANIZATION   OF  PERINI
         CORPORATION, IN THE CERTIFICATE OF VOTE GOVERNING THESE SHARES AND IN A
         STOCK PURCHASE  AGREEMENT DATED AS OF JULY 24, 1996, AS AMENDED, A COPY
         OF EACH OF  WHICH  IS ON  FILE  WITH  PERINI  CORPORATION  AND  WILL BE
         FURNISHED BY THE  CORPORATION TO THE STOCKHOLDER ON REQUEST AND WITHOUT
         CHARGE."

                  (b) Transfer Agent Requirements. The transfer agent (which may
be the  Corporation)  for the Series B Cumulative  Convertible  Preferred  Stock
shall not be  required  to accept for  registration  of  transfer  any shares of
Series B Cumulative  Convertible Preferred Stock bearing the legend contained in
paragraph  (a) above,  except  upon  presentation  of evidence  satisfactory  to
transfer  agent  that the  restrictions  on  transfer  of shares of the Series B
Cumulative  Convertible  Preferred  Stock referred to in the legend in paragraph
(a) have been complied with, all in accordance with such reasonable  regulations
as the  Corporation  may from time to time  agree  with the  transfer  agent for
shares of the Series B Cumulative Convertible Preferred Stock.

         12.  Status  of  Acquired   Shares.   Shares  of  Series  B  Cumulative
Convertible Preferred Stock redeemed or repurchased by the Corporation, received
upon conversion  pursuant to Section 8 or otherwise  acquired by the Corporation
will be restored to the status of  authorized  but unissued  shares of Preferred
Stock, without designation as to class, and may thereafter be issued, but not as
shares of Series B Cumulative Convertible Preferred Stock.

         13.      Special Covenants.

                  (a)  Nomination  of  Directors.  Effective  as of the Original
Issue  Date,  the  Corporation  shall  elect  to the  board of  directors  three
directors designated by the holders of such stock (such directors, together with
their replacements as provided below, the "Designated  Directors"),  one of whom
shall be a Class I director,  one of whom shall be a Class II director,  and one
of whom shall be a Class III director. The holders of a majority of the Series B
Cumulative  Convertible  Preferred  Stock  shall  designate  the classes of such
initial Designated Directors.

                           (i)   In the event that any Designated Director shall
resign,  be unable to serve, or be removed (a "Replaced  Designated  Director"),
the holders of a majority of the Series B Cumulative Convertible Preferred Stock
shall have the right to designate a replacement to serve as Designated

                                       66





Director until the next meeting of  shareholders  at which directors of the same
class as the Replaced Designated  Director are elected.  Any Designated Director
may be  removed  from the  Board,  with or without  cause,  by the  holders of a
majority of the Series B Cumulative Convertible Preferred Stock.

                           (ii)   Except as provided below, at any time when the
term of a Designated  Director  shall have ended and there shall be a meeting of
shareholders  of the  Corporation  to elect  directors,  the  Corporation  shall
nominate  for  election  to  the  board  of  directors,  as a  successor  to any
Designated  Director  serving  pursuant  to Section  13(a) or clause (i) of such
provision,  such  person as is  designated  to be a  Designated  Director by the
holders of a majority of the Series B Cumulative Convertible Preferred Stock.

                           (iii)  In the event that the holders of the Series B
Cumulative  Convertible  Preferred  Stock  dispose of such  stock or  Conversion
Shares (defined below)  representing more than sixty-six and two-thirds  percent
(66-2/3%) and less than or equal to eighty  percent (80%) of the voting power of
the Series B Cumulative Convertible Preferred Stock issued on the Original Issue
Date (plus any payment-in-kind dividends paid thereon), the number of Designated
Directors  shall be reduced to two.  If there are then more than two  Designated
Directors  serving on the  board,  the  holders  of a  majority  of the Series B
Cumulative Convertible Preferred Stock shall remove one such Designated Director
and the holders of such stock shall not have any right,  pursuant to clause (ii)
or otherwise,  to cause the  Corporation  to nominate a designated  successor to
such removed director.

                           (iv)    In the event that the holders of the Series B
Cumulative  Convertible  Preferred  Stock  dispose of such  stock or  Conversion
Shares representing more than eighty percent (80%) and less than or equal ninety
percent  (90%) of the  voting  power  of the  Series  B  Cumulative  Convertible
Preferred  Stock  issued on the  Original  Issue Date (plus any  payment-in-kind
dividends paid thereon),  the number of Designated Directors shall be reduced to
one. If there is then more than one  Designated  Director  serving on the board,
the holders of a majority of the Series B Cumulative Convertible Preferred Stock
shall remove all but one such Designated  Director and the holders of such stock
shall not have any right,  pursuant  to clause (ii) or  otherwise,  to cause the
Corporation to nominate a designated successor to such removed director(s).

                           (v)     In the event that the holders of the Series B
Cumulative  Convertible  Preferred  Stock  dispose of such  stock or  Conversion
Shares  representing  more than ninety  percent (90%) of the voting power of the
Series B Cumulative  Convertible  Preferred  Stock issued on the Original  Issue
Date (plus any payment-in-kind dividends paid thereon), there shall be no

                                       67





Designated  Directors  and any  Designated  Directors  then serving on the board
shall be removed,  and their terms in office shall immediately  expire,  without
any further action of the holders of such stock.

                           (vi) The right to nominate directors pursuant to this
provision  is in addition  to, and not in  limitation  of, any other  rights and
powers  of the  Series  B  Cumulative  Convertible  Preferred  Stock.  Directors
nominated by the holders of the Series B Cumulative  Convertible Preferred Stock
in their  capacity  as  holders  of  capital  stock of the  Corporation  and not
pursuant to clause (i),  (ii), or (iii) above are not  Designated  Directors for
purposes of this Certificate of Vote.

                           (vii)  The vote of the holders of Series B Cumulative
Convertible  Preferred  Stock  referred to in this Section may be exercised at a
meeting  of such  holders or by written  consent of holders  with the  requisite
percentage of the voting power outstanding.

                           (viii)Upon the reasonable request of the Corporation,
the holders of the Series B Cumulative Convertible Preferred Stock shall certify
in writing to the Corporation their holding of Conversion Shares.

                           (ix)     For purposes of this Section:

                                    (1) "voting  power" shall mean the number of
                           votes each such share  possesses  in the  election of
                           directors; and

                                    (2)  "Conversion   Shares"  shall  mean  the
                           shares of Common Stock which are both (A) issuable or
                           issued  upon  conversion  of the Series B  Cumulative
                           Convertible  Preferred Stock pursuant to the terms of
                           this  Certificate of Vote of Directors,  and (B) held
                           by a person who either (x) acquired the shares of the
                           Series B Cumulative  Convertible Preferred Stock from
                           which the  shares  referred  to in clause (A) of this
                           definition  were  converted  and has held such Common
                           Stock  continuously  thereafter,  or (y) acquired the
                           shares  referred to in clause (A) of this  definition
                           from a person  referred  to in clause  (B)(x) of this
                           definition through a distribution to the partners by,
                           or dissolution of, a partnership.

                  (b)      Appointment to Executive Committee.  At any time at
which the holders of the Series B Cumulative Convertible Preferred Stock shall
have the right to nominate directors for election to the board pursuant to 
Section 13(a) hereof, such holders shall also have the right to designate a like
number of persons from among the members of the board of directors to be 
members of the Executive Committee of the board (the "Designated Executive 
Committee Members"). In the event that any Designated Executive Committee Member

                                       68





shall resign,  be unable to serve,  or be removed,  the holders of a majority of
the Series B  Cumulative  Convertible  Preferred  Stock  shall have the right to
designate a replacement  Designated  Executive  Committee Member. Any Designated
Executive Committee Member may be removed from the Executive Committee,  with or
without  cause,  by the  holders  of a  majority  of  the  Series  B  Cumulative
Convertible Preferred Stock.

                  (c) Approval of Certain  Actions.  Neither the Corporation nor
the Board shall take any of the  following  actions  without  the  approval of a
majority  of the  members  of the  Executive  Committee  of the  Board:  (A) any
borrowing or guarantee by the Corporation  exceeding $15 million, (B) except for
issuance of stock or stock options pursuant to (x) the  Corporation's  incentive
compensation  plans and programs,  (y) any warrants  outstanding on the Original
Issue  Date,  or (z) the  Rights,  any  issuance  of stock  (whether  common  or
preferred,  whether voting or non-voting,  whether junior, pari passu, or senior
to the Series B Cumulative  Convertible Preferred Stock) other than Common Stock
in an  aggregate  amount not  exceeding  five  percent  (5%) of the Common Stock
issued and  outstanding on the Original  Issue Date, (C) any strategic  alliance
(other than a construction  joint venture) involving a capital commitment by the
Corporation exceeding $5 million, (D) any asset sale by the Corporation or lease
by it as lessor  exceeding $5 million (other than equipment  dispositions in the
normal course of business); (E) any redemption or amendment of the Rights or the
preferred stock of the Corporation issuable upon the exercise of such Rights, or
any amendment of the Rights Agreement;  and (F) any termination of (other than a
termination upon expiration) or amendment to the management  agreement among the
Corporation, Ronald Tutor and Tutor-Saliba Corporation;  provided, however, that
for purposes of this Section 13(c),  approval of the Executive  Committee  shall
not be required  for any decision by the Board of Directors to redeem the Series
B   Cumulative   Convertible   Preferred   Stock   pursuant  to  Section   6(a).
Notwithstanding  the  foregoing   sentence,   the  board  of  directors  of  the
Corporation may take any of the actions specified in the preceding  sentence if,
after having consulted with and considered the advice of outside counsel, it has
reasonably  determined  in good faith that the failure of the board to take such
action  would be likely  to cause  the  members  of such  board to breach  their
fiduciary duties under applicable law.

         14.  Severability  of  Provisions.  Whenever  possible,  each provision
hereof  shall be  interpreted  in a manner as to be  effective  and valid  under
applicable  law,  but if any  provision  hereof is held to be  prohibited  by or
invalid under  applicable law, such provision  shall be ineffective  only to the
extent of such  prohibition or  invalidity,  without  invalidating  or otherwise
adversely  affecting the remaining  provisions  hereof.  If a court of competent
jurisdiction  should  determine  that a  provision  hereof  would  be  valid  or
enforceable  if a period of time were  extended  or  shortened  or a  particular
percentage were

                                       69




increased  or  decreased,  then  such  court  may make  such  change as shall be
necessary  to render  the  provision  in  question  effective  and  valid  under
applicable law.


IN WITNESS WHEREOF AND UNDER THE PENALTIES OF PERJURY, we have hereto signed our
names this 15th day of January in the year 1997.


/s/ David B. Perini, President
- ------------------------------


/s/ Richard E. Burnham, Clerk
- -----------------------------

- --------------------------------------------------------------------------------


                        THE COMMONWEALTH OF MASSACHUSETTS

                  Certificate of Vote of Directors Establishing
                          A Series of a Class of Stock

                    (General Laws, Chapter 156B, Section 26)

                           I hereby  approve  the within  certificate  and,  the
                           filing fee in the amount of $100.00 having been paid,
                           said  certificate  is hereby  filed  this 16th day of
                           January 1997.


                                      /s/William Francis Galvin
                                      William Francis Galvin
                                      Secretary of the Commonwealth


                           Photocopy of Certificate to Be Sent

                           To:

                           Richard A. Soden, Esq.
                           Goodwin, Procter & Hoar  LLP
                           Exchange Place
                           Boston, MA 02109
                           Tel: (617) 570-1000


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