Exhibit 10(b)
                                          
                                 CABOT CORPORATION
                       KEY EMPLOYEE SEVERANCE PROTECTION PLAN
          
          WHEREAS, the Board of Directors (the "Board") of Cabot Corporation, 
a Delaware corporation (the "Company"), recognizes that the threat of an 
unsolicited takeover or other change in control of the Company may occur 
which can result in significant distractions of its key personnel because of 
the uncertainties inherent in such a situation; and

          WHEREAS, the Board has determined that it is essential and in the 
best interest of the Company and its stockholders to be able to retain the 
services of its key personnel in the event of a threat of a change in control 
of the Company, and following any change in control, to ensure their 
continued dedication and efforts in any such event without undue concern for 
their personal financial and employment security.

          NOW, THEREFORE, in order to fulfill the above purposes, the 
following plan has been developed and is hereby adopted.

                                  ARTICLE I

                            ESTABLISHMENT OF PLAN

          As of the Effective Date, the Company hereby establishes the Cabot 
Corporation Key Employee Severance Protection Plan (the "Plan") as set forth 
in this document.

                                     ARTICLE II

                                    DEFINITIONS

          As used herein, the following words and phrases shall have the 
following respective meanings unless the context clearly indicates otherwise.

          2.1 "Accrued Compensation" means an amount which shall include all 
amounts earned, accrued or otherwise payable to a Participant as of the 
Participant's Termination Date but not paid as of such Termination Date 
including (i) base salary, (ii) reimbursement for reasonable and necessary 
expenses incurred by the Participant on behalf of the Company during the 
period ending on the Termination Date, (iii) vacation pay, and (iv) bonuses 
and incentive compensation.



          2.2  "Affiliate" means, with respect to any person or entity, any 
entity, directly or indirectly, controlled by, controlling or under common 
control with such person or entity.  

          2.3  "Base Salary" means a Participant's annualized base salary 
(including any portion that the Participant may have elected to defer), 
calculated at the greater of the rate in effect (i) immediately prior to a 
Change in Control or (ii) as of the Participant's Termination Date. 

          2.4  "Board" means the Board of Directors of Cabot Corporation.

          2.5  "Bonus Amount" means an amount equal to the greater of (A) 
Participant's target bonus amount (including any portion that the Participant 
may have elected to defer), if any, under all Short-Term Incentive Plans for 
the fiscal year in which the Change in Control occurs or the fiscal year in 
which the Participant's Termination Date occurs, whichever is greater or (B) 
the highest bonus amount paid or payable to the Participant (including any 
portion that the Participant may have elected to defer) under all Short-Term 
Incentive Plans in respect of any of the three fiscal years preceding the 
fiscal year in which the Change in Control occurs.

          2.6  "Cause" means (a) the willful and continued refusal by the 
Participant to perform substantially his or her reasonably assigned duties 
with the Company (other than any such failure resulting from his or her 
physical or mental incapacity or any such actual or anticipated failure after 
the issuance of a Notice of Termination by the Participant for Good Reason) 
after a written demand for substantial performance is delivered to the 
Participant by the Company, which demand specifically identifies the manner 
in which the Company believes that the Participant has not substantially 
performed his or her duties, or (b) the willful engaging by the Participant 
in conduct which is demonstrably and materially injurious to the Company, 
monetarily or otherwise.  For purposes of this definition (i) no act, or 
failure to act, on the Participant's part shall be deemed "willful" unless 
done, or omitted to be done, by the Participant not in good faith and without 
reasonable belief that his or her action or omission was in the best interest 
of the Company and (ii) good faith errors in judgment by the Participant 
shall not constitute Cause or be considered in any determination of whether 
Cause exists.

          2.7  "Change in Control" means:

               (a)  An acquisition of any voting securities of the Company 
(the "Voting Securities") by any "Person" as the term person is used for 
purposes of Section 13(d) or 14(d) of the Securities Exchange Act of 1934, as 
amended (the "Exchange Act"), immediately after which such Person has 
"Beneficial Ownership" (within the meaning of Rule 13d-3 promulgated under 
the Exchange Act) together with all affiliates and associates (as such terms 
are used in Rule 12b-2 of the General Rules and Regulations under the 
Exchange Act) of such person, directly or indirectly, of securities of the 

                                       2



Company representing thirty-five percent (35%) or more of the combined voting 
power of the Company's then outstanding Voting Securities; provided, however, 
in determining whether a Change in Control has occurred, Voting Securities 
which are acquired in a "Non-Control Acquisition" (as hereinafter defined) 
shall not constitute an acquisition which would cause a Change in Control.  A 
"Non-Control Acquisition" shall mean an acquisition (i) by an employee 
benefit plan (or a trust forming a part thereof) maintained (A) by the 
Company or (B) by any corporation or other Person of which a majority of its 
voting power or its voting equity securities or equity interest is owned, 
directly or indirectly, by the Company (for purposes of this definition, a 
"Subsidiary"), (ii) by the Company or its Subsidiaries or (iii) directly from 
the Company (A) by an underwriter in connection with an underwritten public 
offering or private placement, (B) of non-voting convertible debt or 
non-voting convertible preferred stock, in either case, until converted into 
Voting Securities or (C) by a Person who, in connection with such 
acquisition, enters into a standstill agreement with Company with a duration 
of at least two years and pursuant to which such Person agrees to vote the 
acquired securities on any matter either at the direction of the Board or in 
the same proportion as the Company's other stockholders vote on the matter; 
provided, however, that the expiration of the standstill agreement shall 
constitute an acquisition of the Voting Securities then Beneficially Owned by 
such Person.

               (b)  During any period of two years or less beginning on or 
after January 1, 1998, individuals who at the beginning of such period are 
members of the Board (the "Incumbent Board"), cease for any reason to 
constitute a majority of the members of the Board; provided, however, that if 
the election, or nomination for election by the Company's common 
stockholders, of any new director (other than a director designated by a 
person who has entered into an agreement with the Company to effect a 
transaction described in clause (d) of this definition) was approved by a 
vote of at least two-thirds of the Incumbent Board, such new director shall, 
for purposes of this Plan, be considered as a member of the Incumbent Board; 
provided further, however, that no individual shall be considered a member of 
the Incumbent Board if such individual initially assumed office through 
either an actual or threatened "Election Contest" (as described in Rule 
14a-11 promulgated under the Exchange Act) or other actual or threatened 
solicitation of proxies or consents by or on behalf of a Person other than 
the Board (a "Proxy Contest") including by reason of any agreement intended 
to avoid or settle any Election Contest or Proxy Contest; or 

               (c)  At any duly conducted election of directors at a special 
or annual meeting of stockholders of the Company, (a) two (2) or more 
nominees who are both: (i) nominees of, and endorsed by, the Company and (ii) 
not employees of the Company or any Affiliate of the Company at the time of 
such election are not elected to serve as directors, and (b) any person not a 
nominee of, and endorsed by, the Company is elected to serve as a director of 
the Company.

                                       3



               (d)  Approval by stockholders of the Company of:

                    (i)  A merger, consolidation or reorganization involving 
          the Company, unless such merger, consolidation or reorganization is 
          a "Non-Control Transaction."  A "Non-Control Transaction" shall 
          mean a merger, consolidation or reorganization of the Company 
          where: 

                         (A)  the stockholders of the Company, immediately 
                     before such merger, consolidation or reorganization, own 
                     directly or indirectly immediately following such 
                     merger, consolidation or reorganization, at least 
                     sixty-five percent (65%) of the combined voting power of 
                     the outstanding voting securities of the corporation 
                     resulting from such merger or consolidation or 
                     reorganization (the "Surviving Corporation") in 
                     substantially the same proportion as their ownership of 
                     the Voting Securities immediately before such merger, 
                     consolidation or reorganization,

                         (B)  the individuals who were members of the 
                     Incumbent Board immediately prior to the execution of 
                     the agreement providing for such merger, consolidation 
                     or reorganization constitute at least two-thirds of the 
                     members of the board of directors of the Surviving 
                     Corporation, or a corporation beneficially directly or 
                     indirectly owning a majority of the Voting Securities of 
                     the Surviving Corporation, and

                         (C)  no Person other than (i) the Company, (ii) any 
                     Subsidiary, or (iii) any employee benefit plan (or any 
                     trust forming a part thereof) maintained by the Company, 
                     the Surviving Corporation, or any Subsidiary, acquires 
                     Beneficial Ownership of thirty-five percent (35%) or 
                     more of the combined voting power of the Surviving 
                     Corporation's then outstanding voting securities.

                    (ii) A complete liquidation or dissolution of the 
Company; or

                    (iii) An agreement for the sale or other disposition of 
          all or substantially all of the assets of the Company to any Person 
          (other than a transfer to a Subsidiary).

          Notwithstanding the foregoing, a Change in Control shall not be 
deemed to occur solely because any Person (the "Subject Person") acquired 
Beneficial Ownership of more than the permitted amount of the then 
outstanding Voting Securities as a result of the acquisition of Voting 
Securities by the Company which, by reducing the number of Voting Securities 
then outstanding, increases the percentage of shares

                                       4



Beneficially Owned by the Subject Person, provided that if a Change in 
Control would occur (but for the operation of this sentence) as a result of 
the acquisition of Voting Securities by the Company, and after such share 
acquisition by the Company, the Subject Person becomes the Beneficial Owner 
of any additional Voting Securities which increases the percentage of the 
then outstanding Voting Securities Beneficially Owned by the Subject Person, 
then a Change in Control shall occur.

          Notwithstanding anything to the contrary contained herein, if the 
employment of a Participant is terminated (i) at the request of a third party 
who has indicated an intention or taken steps reasonably calculated to effect 
a Change in Control and who effectuates a Change in Control or (ii) otherwise 
in connection with, or in anticipation of, a Change in Control which actually 
occurs, then for purposes of this Plan the date of a Change in Control with 
respect to that Participant shall be deemed to be the date immediately prior 
to the Participant's Termination Date. 

          2.8  "Company" means Cabot Corporation, a Delaware corporation.

          2.9  "Compensation Committee" means the Compensation Committee of 
the Board as such committee may be constituted from time to time.

          2.10 "Disability" shall occur if, as a result of a Participant's 
physical or mental incapacity due to illness, accident or otherwise, a 
Participant shall be unable to perform his or her duties with the Company.

          2.11 "Effective Date" means the date the Plan is approved by the 
Board or such other date as the Board shall designate in its resolution 
approving the Plan.

          2.12 "EIP" means the Cabot Corporation 1996 Equity Incentive Plan 
and any subsequently adopted plan which has been approved by the stockholders 
of the Company and which provides equity-based incentives to key employees of 
the Company; provided, however, that no subsequently adopted plan which is 
qualified under Section 401(a) of the Internal Revenue Code of 1986, as 
amended, shall be included in this definition.

          2.13 "Eligible Employee" means, as of any date, each employee of 
the Company or any Affiliate (i) who has been granted, within one year prior 
to such date,  an award under an EIP; (ii) who, at the time such employee was 
offered employment with the Company or Affiliate, was provided written notice 
from the Company to the effect he or she will be considered for participation 
in an EIP, provided that the duration of such eligibility under this clause 
(ii) shall be only from the employee's date of hire or notice (whichever 
occurs later) until the next annual grant of awards under an EIP; or (iii) 
who has been designated as an Eligible Employee by the Compensation Committee.

                                          5



          2.14 "Excluded Termination" has the meaning ascribed to it in 
Section 4.1(b).

          2.15 "Good Reason" means the occurrence after a Change in Control 
of any of the following events or conditions:

               (a)  the assignment to the Participant of any duties 
inconsistent with the position with the Company that the Participant held 
immediately prior to the Change in Control, or a substantial adverse 
alteration in the nature or status of the Participant's responsibilities from 
those in effect immediately prior to the Change in Control;

               (b)  a reduction in the Participant's annual base salary below 
the greater of the rate in effect (i) as of the date of the Change in Control 
or (ii) on any date following the Change in Control;

               (c)  the relocation of the offices of the Company or Operating 
Unit at which the Participant is principally employed to a location more than 
twenty-five (25) miles from the location of such offices immediately prior to 
the Change in Control, or the Company's requiring the Participant to be based 
anywhere other than such offices, except to the extent the Participant was 
not previously assigned to a principal location and except for required 
travel on the Company's business to an extent substantially consistent with 
the Participant's business travel obligations at the time of the Change in 
Control;

               (d)  the failure by the Company to pay to the Participant any 
portion of the Participant's current compensation or to pay to the 
Participant any portion of an installment of deferred compensation under any 
deferred compensation program of the Company in which the Participant 
participated, within seven (7) days of the date such compensation is due;

               (e)  the failure by the Company to continue in effect any 
material compensation or benefit plan in which the Participant participated 
immediately prior to the Change in Control, unless an equitable arrangement 
(embodied in an ongoing substitute or alternative plan providing compensation 
and benefits not materially less favorable than those provided to the 
Participant immediately prior to the Change in Control) has been made with 
respect to such plan, or the failure by the Company to continue the 
Participant's participation therein (or in such substitute or alternative 
plan) on a basis not materially less favorable, both in terms of the amount 
of benefits provided and the level of the Participant's participation 
relative to other Participants, as existed immediately prior to the Change in 
Control;

               (f)  the failure by the Company to continue to provide the 
Participant with benefits substantially similar to those enjoyed by the 
Participant under 

                                       6



any pension, life insurance or death benefit, medical, health and accident, 
or disability plan in which the Participant participated immediately prior to 
the Change in Control, the taking of any action by the Company which would 
directly or indirectly materially reduce any of such benefits, or the failure 
by the Company to provide the Participant with the number of paid vacation 
days to which the Participant is entitled by reason of agreement or 
understanding with the Company or on the basis of years of service with the 
Company in accordance with the normal vacation policy of the Company in 
effect immediately prior to the Change in Control;

               (g)  the failure of the Company to obtain a satisfactory 
agreement from any successor, enforceable by the Participant, to assume and 
agree to honor and perform the Company's obligations under this Plan; or

               (h)  any purported termination of the Participant's employment 
by the Company which is not effected pursuant to the requirements of Article 
V.

          2.16 "Operating Unit" means any subsidiary, division, or other 
business unit of the Company or any Affiliate.

          2.17 "Participant" means an Eligible Employee who meets the 
eligibility requirements of Article III.

          2.18 "Plan" means the Cabot Corporation Key Employee Severance 
Protection Plan.

          2.19 "Pro-Rata Bonus" means, with respect to the fiscal year in 
which a Participant's Termination Date occurs, an amount equal to the Bonus 
Amount multiplied by a fraction the numerator of which is the number of days 
that have elapsed in such fiscal year through the Termination Date and the 
denominator of which is 365.

          2.20 "Short-Term Incentive Plan" means any bonus or incentive 
compensation plan, policy, program or other arrangement pursuant to which 
awards payable in cash are made to a Participant in respect of an award 
period of one year or less.

          2.21 "Severance Benefit" means the benefit payable in accordance 
with Article IV of the Plan.

          2.22 "Termination Date" means the date of termination of a 
Participant's employment as set forth in Article V.

                                       7



                                    ARTICLE III

                                    ELIGIBILITY

          3.1  Participation.  For purposes of this Plan (i) each individual 
who is an Eligible Employee as of the Effective Date shall automatically be a 
Participant under this Plan as of the Effective Date, without further action 
and (ii) each individual who becomes an Eligible Employee after the Effective 
Date shall simultaneously become a Participant under this Plan as of the date 
he or she becomes an Eligible Employee, without further action.

          3.2  Duration of Participation.  Any individual who is a 
Participant as of the occurrence of a Change in Control shall continue as a 
Participant until the date on which the Participant has received the entire 
amount of the Severance Benefit, if any, payable to such Participant under 
the Plan.  Any individual who, after becoming a Participant but before the 
occurrence of a Change in Control, (i) ceases to be an Eligible Employee 
(including ceasing to be an Eligible Employee by reason of an Excluded 
Termination) or (ii) is removed from participation in the Plan by action of 
the Compensation Committee shall cease to be a Participant under the Plan one 
year from the date such individual ceases to be an Eligible Employee in 
accordance with clause (i) of this sentence, or is removed from participation 
in the Plan in accordance with clause (ii) of this sentence, as the case may 
be.  

                                     ARTICLE IV

                                 SEVERANCE BENEFITS

          4.1  Right to Severance Benefit.

               (a)  A Participant shall be entitled to receive from the 
Company a Severance Benefit in the amount provided in Section 4.2 if (i) a 
Change in Control has occurred and (ii) within the three (3) year period 
commencing on the date of the Change in Control, the Participant's employment 
with the Company and its Affiliates terminates for any reason other than (A) 
Cause, (B) Disability, (C) the Participant's death, (D) a termination 
initiated by the Participant without Good Reason or (E) an Excluded 
Termination.  

               (b)  Sale of Business or Assets.  If, following a Change in 
Control,  a Participant's employment with the Company and its Affiliates is 
terminated in connection with the sale, divestiture or other disposition of 
any Operating Unit (or part thereof), such termination shall not be a 
termination of employment of the Participant for purposes of the Plan and the 
Participant shall not be entitled to a Severance Benefit as a result of such 
termination of employment, provided that (i) the Participant is offered 

                                          8



employment by the Operating Unit or the acquiror of such Operating Unit (or 
part thereof), as appropriate, on terms and conditions that would not 
constitute "Good Reason" as defined in Section 2.15 (substituting the 
Operating Unit or acquiror for the Company, as appropriate) and (ii) the 
Company obtains an agreement from such acquiror or the Operating Unit, as 
appropriate, enforceable by the Participant, to provide severance pay and 
benefits (A) at least equal to the Severance Benefit and (B) payable upon a 
termination of the Participant's employment with the acquiror or the 
Operating Unit, as appropriate, and its Affiliates under the same 
circumstances as they would have been payable under this Plan substituting 
the acquiror or the Operating Unit, as appropriate, and its Affiliates for 
the Company and its Affiliates (such a termination of employment is herein 
referred to as an "Excluded Termination").  In such circumstances, the 
Participant shall not be entitled to receive any Severance Benefit under this 
Plan whether or not the Participant becomes so employed. This provision shall 
not be construed or interpreted so as to give any Participant an entitlement 
to any Severance Benefit under any circumstances prior to a Change in Control 
or in connection with any termination of employment prior to a Change in 
Control.

          4.2  Amount of Severance Benefit.  If a Participant's employment is 
terminated in circumstances entitling him or her to a Severance Benefit as 
provided in Section 4.1, such Participant shall be entitled to the following:

               (a)  the Company shall pay to the Participant all Accrued 
Compensation within ten (10) days after the Participant's Termination Date;

               (b)  the Company shall pay to the Participant a Pro-Rata Bonus 
within thirty (30) days after the Participant's Termination Date;

               (c)  the Company shall pay to the Participant, as severance 
pay and in lieu of any further salary for periods subsequent to the 
Participant's Termination Date, in a single payment (without any discount for 
accelerated payment, but subject to applicable withholding taxes) within 
thirty (30) days after the Participant's Termination Date, an amount in cash 
equal to one (1) times the sum of (A) the Participant's Base Salary and (B) 
the Participant's Bonus Amount;

               (d)  for the one (1) year period commencing on the 
Participant's Termination Date (the "Continuation Period"), the Company shall 
at its expense (and without contribution by the Participant) continue on 
behalf of the Participant and his or her dependents and beneficiaries (i) 
medical, health, dental and prescription drug benefits, (ii) long-term 
disability coverage and (iii) life insurance and other death benefits 
coverage.  The coverages and benefits (including deductibles, if any) 
provided under this Section 4.2(d) during the Continuation Period shall be no 
less favorable to the Participant and his or her beneficiaries than the most 
favorable of such coverages and benefits provided the Participant and his or 
her dependents during the 90-day period immediately 

                                          9



preceding the Change in Control or as of any date following the Change in 
Control but preceding the Participant's Termination Date.  The obligation 
under this Section 4.2(d) with respect to the foregoing benefits shall be 
limited if the Participant obtains any such benefits pursuant to a subsequent 
employer's benefit plans, in which case the Company may reduce or eliminate 
the coverage and benefits it is required to provide the Participant hereunder 
as long as the aggregate coverages and benefits of the combined benefit plans 
is no less favorable to the Participant than the coverages and benefits 
required to be provided hereunder.  Any period during which benefits are 
continued pursuant to this Section 4.2(d) shall be considered to be in 
satisfaction of the Company's obligation to provide "continuation coverage" 
pursuant to Section 4980B of the Internal Revenue Code of 1986, as amended, 
and the period of coverage required under said Section 4980B shall be reduced 
by the period during which benefits were provided pursuant to this Section 
4.2(d); and

               (e)  the Company shall pay or reimburse the Participant for 
the costs, fees and expenses of outplacement assistance services (not to 
exceed fifteen percent (15%) of the Participant's Base Salary) provided by an 
outplacement agency selected by the Participant. 

          4.3  Mitigation.  The Participant shall not be required to mitigate 
the amount of any payment or benefit provided for in this Plan by seeking 
other employment or otherwise and no such payment or benefit shall be offset 
or reduced by the amount of any compensation or benefits provided to the 
Participant in any subsequent employment, except to the extent provided in 
Section 4.2(d).

          4.4  Other Benefits; Non-Exclusivity of Rights.  Nothing in this 
Plan shall prevent or limit the Participant's continuing or future 
participation in any benefit, bonus, incentive or other plan or program 
provided by the Company or any of its Affiliates and for which the 
Participant may qualify, nor shall anything herein limit or reduce such 
rights as any Participant may have under any other agreements with the 
Company or any of its Affiliates; provided, however, that to the extent the 
Participant may be entitled under any such other plan, program or agreement 
or pursuant to any applicable law or regulation to benefits of the types 
enumerated in Section 4.2, the provision of such benefits pursuant to such 
other plan, program or agreement or in satisfaction of such legal requirement 
shall count toward the Company's obligation to provide the enumerated 
benefits pursuant to this Plan, it being the intention of this Plan to 
provide the enumerated benefits at least at the level specified herein, but 
not to provide such benefits on a duplicative basis.  Without limiting the 
generality of the foregoing, any benefits provided by the Company to a 
Participant pursuant to the Company's Senior Management Severance Protection 
Plan shall count toward the Company's obligations to provide similar benefits 
to such Participant pursuant to this Plan.  Nothing herein shall be deemed to 
limit, supersede or restrict any rights that any Participant may have to

                                       10



accelerated vesting of any right or benefit under change in control 
provisions of any plan, program, agreement or otherwise.

                                     ARTICLE V

                             TERMINATION OF EMPLOYMENT

          5.1  Termination by Company for Cause.  Following a Change of 
Control, any purported termination by the Company of a Participant's 
employment for Cause shall be communicated by written notice of termination 
to the Participant. Written notice of termination to the Participant shall 
include (i) the specific facts and circumstances which the Company asserts 
constitute Cause, (ii) the Participant's termination date, which date shall 
be not less than five (5) business days from the date the written notice of 
termination is given to the Participant, and (iii) a specific reference to 
Section 2.6 and to this Section of the Plan.  A copy of this Plan shall be 
delivered to the Participant with such notice of termination.  No facts or 
circumstances other than those set forth in the written notice of termination 
given to the Participant by the Company as the facts and circumstances 
constituting Cause may be relied upon by the Company thereafter as Cause for 
such termination.  Any termination of a Participant's employment by the 
Company other than in accordance with a written notice of termination as 
required by this Section 5.1 shall not be a termination for Cause.

          5.2  Termination by Company for Disability.  Following a Change in 
Control, any termination by the Company of a Participant's employment for 
Disability shall be in accordance with the following procedure.  If as a 
result of Disability, a Participant shall have been absent from the 
performance of his or her duties with the Company for six (6) consecutive 
months, and the Participant is unable to return to his or her duties (on the 
same basis, full-time or part-time, as the case may be, as the Participant 
was working immediately prior to such absence) even with reasonable 
accommodations on the part of the Company, the Company may give the 
Participant written notice of a proposed termination of the Participant's 
employment for Disability.  Such notice shall state that the Participant 
shall be terminated for Disability unless the Participant returns to the 
performance of his or her duties by a date stated in such notice, which shall 
be not less than thirty (30) days after the receipt of such notice by the 
Participant.  Such termination shall be effective as a termination for 
Disability if, and only if, the Company has made all reasonable 
accommodations required to permit the Participant to return to work and the 
Participant has not returned to the performance of his or her duties (on the 
same basis, full-time or part-time, as the case may be, as the Participant 
was working immediately prior to such absence) prior to the date therefor 
stated in such notice, in which case such date shall be the Termination Date.

          5.3  Termination by Participant for Good Reason.  Following a 
Change in Control, a Participant having Good Reason shall have the right to 
terminate his or her 

                                          11



employment without prior notice to the Company, and shall not be required to 
give any notice in order to perfect his or her rights under this Plan upon a 
termination for Good Reason, except as provided in this Section 5.3.  Within 
thirty (30) days after receipt by the Participant of (a) a written request by 
the Company for a statement of any facts and circumstances relied upon by the 
Participant as constituting Good Reason for such termination, which request 
shall specifically refer to this Section and to Section 2.15, accompanied by 
(b) a copy of this Plan, the Participant shall (if the Participant has not 
already done so) provide the Company with a written statement setting forth 
in reasonable detail all facts and circumstances relied upon by the 
Participant as constituting Good Reason for such termination.  The 
Participant shall have the right to amend and supplement such statement (or 
any statement provided prior to such notice) until thirty (30) days after 
receipt of such request from the Company; and no facts or circumstances not 
set forth in such statement, as the same may be amended and supplemented as 
provided herein, may be relied upon by the Participant thereafter as Good 
Reason for such termination.

          5.4  Other Terminations.  Any termination, other than for Cause, 
Disability or Good Reason, shall not require any particular procedures. 

                                     ARTICLE VI

                          LIMITATION ON SEVERANCE BENEFITS

          6.   Excise Tax Limitation.

               (a)  Notwithstanding anything contained in the Plan to the 
contrary, to the extent that the Severance Benefit provided to a Participant 
would be subject to the excise tax (the "Excise Tax") imposed under Section 
4999 of the Internal Revenue Code of 1986, as amended (the "Code"), the 
Severance Benefit shall be reduced (but not below zero) if and to the extent 
that a reduction in the Severance Benefit would result in the Participant 
retaining a larger amount, on an after-tax basis (taking into account 
federal, state and local income taxes and the Excise Tax), than if the 
Participant received the entire amount of such Severance Benefit.  Unless the 
Participant shall have given prior written notice specifying a different 
order to the Company to effectuate the foregoing, the Company shall reduce or 
eliminate the Severance Benefit, by first reducing or eliminating the portion 
of the Severance Benefit which is not payable in cash and then by reducing or 
eliminating cash payments, in each case in reverse order beginning with 
payments or benefits which are to be paid the farthest in time from the 
Determination (as hereinafter defined).

               (b)  The initial determination of whether the Severance 
Benefit shall be reduced as provided in Section 6(a) and the amount of such 
reduction shall be made at the Company's expense by an accounting firm 
selected by the Company from 

                                       12



among the six largest accounting firms in the United States (the "Accounting 
Firm").  The Accounting Firm shall provide its determination (the 
"Determination"), together with detailed supporting calculations and 
documentation to the Company and the Participant within ten (10) days of the 
Termination Date.  If the Accounting Firm determines that no Excise Tax is 
payable by the Participant with respect to a Severance Benefit, it shall 
furnish the Participant with an opinion reasonably acceptable to the 
Participant that no Excise Tax will be imposed with respect to any such 
Severance Benefit, and such Determination shall be binding, final and 
conclusive upon the Company and the Participant.  If the Accounting Firm 
determines that an Excise Tax would be payable, the Participant shall have 
the right to accept the Determination of the Accounting Firm as to the extent 
of the reduction, if any, pursuant to Section 6(a), or to have such 
Determination reviewed by an accounting firm selected by the Participant, at 
the expense of the Company, in which case the determination of such second 
accounting firm shall be binding, final and conclusive upon the Company and 
Participant.

                                 ARTICLE VII

                            SUCCESSORS TO COMPANY

          7.1 Successors. 

               (a)  This Plan shall be binding upon the Company, its 
successors and assigns and the Company shall require any successor or assign 
to expressly assume and agree to perform this Plan in the same manner and to 
the same extent that the Company would be required to perform it if no such 
succession or assignment had taken place.  The term "Company" as used herein 
shall include such successors and assigns.  The term "successors and assigns" 
as used herein shall mean a corporation or other entity acquiring all or 
substantially all the assets and business of the Company whether by operation 
of law or otherwise.

               (b)  Neither this Plan nor any right or interest hereunder 
shall be assignable or transferable by a Participant or his or her 
beneficiaries or legal representatives, except by will or by the laws of 
descent and distribution. This Plan shall inure to the benefit of and be 
enforceable by a Participant's legal personal representative.

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                                    ARTICLE VIII

                      DURATION, AMENDMENT AND PLAN TERMINATION

          8.1  Duration.  This Plan shall continue in effect until terminated 
in accordance with Section 8.2.  

          8.2  Amendment and Termination.  Prior to a Change in Control, the 
Plan may be amended or modified in any respect, and may be terminated, by 
resolution adopted by two-thirds of the Board; provided, however, that no 
such amendment, modification or termination, which would adversely affect the 
benefits or protections hereunder of any individual who is a Participant as 
of the date such amendment, modification or termination is adopted shall be 
effective as it relates to such individual unless no Change in Control occurs 
within one year after such adoption, any such attempted amendment, 
modification or termination adopted within one year prior to a Change in 
Control being null and void ab initio as it relates to all individuals who 
were Participants prior to such adoption; provided, further, however, that 
the Plan may not be amended, modified or terminated, (i) at the request of a 
third party who has indicated an intention or taken steps to effect a Change 
in Control and who effectuates a Change in Control or (ii) otherwise in 
connection with, or in anticipation of, a Change in Control which actually 
occurs, any such attempted amendment, modification or termination being null 
and void ab initio.  From and after the occurrence of a Change in Control, 
the Plan (i) may not be amended or modified in any manner that would in any 
way adversely affect the benefits or protections provided to any individual 
hereunder and (ii) may not be terminated until the later of (a) the third 
anniversary of the Change in Control or (b) the date that all Participants 
who have become entitled to a Severance Benefit hereunder shall have received 
such payments in full.  

          8.3  Form of Amendment.  Any amendment or termination of the Plan 
shall be effected by a written instrument signed by a duly authorized officer 
or officers of the Company, certifying that the amendment or termination has 
been approved by the Board.

                                     ARTICLE IX

                                   MISCELLANEOUS

          9.1 Legal Fees and Expenses.  The Company shall pay all legal fees 
and related expenses (including the costs of experts, evidence and counsel) 
reasonably incurred by a Participant as they become due as a result of (a) 
the Participant's termination of employment (including all such fees and 
expenses, if any, incurred in contesting or disputing in good faith any such 
termination of employment) or (b) the Participant seeking to obtain or 
enforce any right or benefit provided by this Plan or by 

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any other plan or arrangement maintained by the Company under which the 
Participant is or may be entitled to receive benefits upon or following his 
or her termination of employment; provided, however, that the circumstances 
set forth in clauses (a) and (b) occurred on or after a Change in Control.

          9.2  Employment Status.  This Plan does not constitute a contract 
of employment or impose on the Company any obligation to retain any 
Participant as an employee or to change any employment policies of the 
Company.

          9.3  Validity and Severability.  The invalidity or unenforceability 
of any provision of the Plan shall not affect the validity or enforceability 
of any other provision of the Plan, which shall remain in full force and 
effect, and any prohibition or unenforceability in any jurisdiction shall not 
invalidate or render unenforceable such provision in any other jurisdiction.

          9.4  Settlement of Claims.  The Company's obligation to make the 
payments provided for in this Plan and otherwise to perform its obligations 
hereunder shall not be affected by any circumstances, including, without 
limitation, any set-off, counterclaim, defense, recoupment, or other right 
which the Company may have against a Participant or others.

          9.5  Governing Law.  The validity, interpretation, construction and 
performance of the Plan shall in all respects be governed by the laws of the 
Commonwealth of Massachusetts, without giving effect to the conflict of law 
principles thereof.


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