<PAGE>

                                                                  Exhibit 10.(c)



                       AGREEMENT REGARDING AMENDMENT TO
                   EMPLOYMENT AGREEMENT AND RELATED MATTERS

                         Dated as of December 15, 1997


     Reference is made to that certain Employment Agreement dated August 15,
1997, effective as of October 11, 1995, between Glastonbury Bank & Trust Company
("GBT") and J. Gilbert Soucie ("Employee") (the "Employment Agreement"), that
certain Executive Deferred Compensation Plan, effective as of December 1, 1995
(the "Plan"), that certain Participation Agreement dated August 15, 1997,
entered into by and between GBT and Employee in connection with the Plan, and
that certain Trust Under Glastonbury Bank & Trust Company, Inc. Executive
Deferred Compensation Plan and Other Arrangements dated August 15, 1997 (the
"Trust").

     This agreement (referred to herein as this "Amendment") is intended to
amend certain provisions contained in the Employment Agreement and address
certain related matters pertaining to the Plan and the Trust, and is being
entered into as of the date set forth above by and among GBT, Employee and SIS
Bancorp, Inc. ("SIS"), in connection with, and subject to, the consummation of
the acquisition of GBT by SIS (the "Acquisition"), pursuant to that certain
Agreement and Plan of Reorganization dated August 18, 1997 by and between SIS
and GBT (the "Acquisition Agreement"). The Employment Agreement, as and to the
extent amended by this Amendment, is and shall continue to be in full force and
effect and shall not be affected by this Amendment except and only to the extent
specified herein. If, and to the extent that, the Acquisition Agreement is
terminated in accordance with its terms, and the Acquisition consequently is not
consummated as contemplated by the parties hereto, then this Amendment shall
become null and void, and shall have no further force or effect, as of the date
upon which such termination of the Acquisition Agreement occurs.

     In consideration of the premises and mutual premises and covenants
contained herein, and other good and valuable consideration, the receipt and
adequacy of which is hereby acknowledged, the parties hereby agree as follows:

     1.   The last sentence of Article III (Compensation) of the Employment
Agreement shall be and hereby is amended and restated in its entirety to read as
follows: "Said salary shall be payable in equal monthly installments commencing
the first of the month following the effective date or in accordance with such
other schedule as may be utilized by SIS Bancorp, Inc. ("SIS") generally for the
payment of annual salary to its salaried employees."

     2.   The last sentence of Article IV (Duties) of the Employment Agreement
shall be and hereby is amended and restated in its entirety to read as follows:
"Employee's duties, responsibilities and job location during the term of this
Agreement shall be substantially the same as they were during the twelve (12)
month period prior to the effective date of a change of control, taking into
account that Employer shall conduct its business and operations following the
date on which Employer is acquired by SIS (the "Acquisition") as a wholly owned
subsidiary of SIS and that Employee's duties, responsibilities and job location
may be subject to change as a result of Employer's having become a part of SIS's
consolidated business organization."

     3.   Article V (Benefits) shall be and hereby is amended and restated in
its entirety to read as follows:

          During the term of this Agreement, Employee shall be entitled to and
          shall receive all

<PAGE>

          benefits and conditions of employment available generally to employees
          of Employer at the same level and responsibility pursuant to Employer
          plans and policies then in effect during the twelve (12) month period
          prior to the effective date of the change of control or as such
          benefits and conditions may be amended or modified following the
          completion of the Acquisition in accordance with the terms of Section
          5.23(a) of the Agreement and Plan of Reorganization dated August 18,
          1997 by and between SIS and Employer. The employment benefits and
          conditions shall include by way of illustration, but not of
          limitation, medical and hospital insurance, life insurance, pension,
          profit sharing or retirement income plans, annual vacation, holidays,
          and disability insurance; provided, however; notwithstanding any other
          provision in this Agreement to the contrary, that Employee shall not,
          after his termination of employment, be entitled to additional
          benefits, including contributions, benefit accruals and additional
          service credit for any purpose, under any plans of the Employer or
          SIS, as the case may be, that are intended to comply with Section 401
          of the Internal Revenue Code of 1986, as amended, except as such plans
          shall otherwise provide.

     4.   The first paragraph of Article VII (Severance Pay/Benefits) shall be
     and hereby is amended and restated in its entirety to read as follows:

          If at any time during the term of this Agreement, Employee's
     employment is terminated upon the initiative of Employer at any time prior
     to an SIS Change of Control (as such term is defined herein) for any reason
     other than for cause, and such employment is not otherwise continued by SIS
     or any of its affiliates on terms at least as favorable to Employee in the
     aggregate as those in effect immediately prior to such termination, then
     Employee shall receive the following pay and benefits:


     A.   A total payment equal to 1/365 of the base amount (i.e., not including
          any annual bonus) of Employee's annual salary as in effect immediately
          prior to the date of termination multiplied by the number of calendar
          days remaining in the period commencing on the first calendar day
          following the day on which such termination of employment occurs and
          ending on the second anniversary of the date on which the Acquisition
          is completed.

     B.   Continuation of Employee in all medical and hospital insurance, life
          insurance, disability insurance, pension, profit sharing or retirement
          income plans, and deferred compensation plans at Employer's expense
          for the period commencing on the first calendar day following the date
          on which such termination occurs and ending on the second anniversary
          of the date on which the Acquisition is completed; provided, however,
          that the Employee shall not, after his termination of employment, be
          entitled to additional benefits, including contributions, benefit
          accruals and additional service credit for any purpose, under any
          plans of the Employer or SIS, as the case may be, that are intended to
          comply with Section 401 of the Internal Revenue Code of 1986, as
          amended, except as such plans shall otherwise provide.

     C.   Outplacement services including professional, secretarial and job
          search support for the period commencing on the first calendar day
          following the date on which such termination occurs and ending on the
          second anniversary of the date on which such Acquisition is completed
          at a total cost not to exceed the lesser of $12,000 or such smaller
          amount equal to the product of $12,000 multiplied by a fraction, the
          numerator of which is equal to the number of calendar days in the
          period commencing on the first calendar day following the date on
          which such termination occurs and ending on the second anniversary of
          the date on which the Acquisition is completed, and the denominator of
          which is 730.

<PAGE>

          Employee shall have the option of taking a lump sum payment, less
          applicable tax deductions, in lieu of such outplacement services.

If at any time during the term of this Agreement, Employee's employment is
terminated for any reason, other than for cause, death or voluntary leaving,
following the occurrence of an SIS Change of Control, then Employee shall
receive the following pay and benefits:

A.   A total payment equal to two times the base amount (i.e., not including any
     annual bonus) of Employee's annual salary as in effect immediately prior to
     the date of termination.

B.   Continuation of Employee in all medical and hospital insurance, life
     insurance, disability insurance, pension, profit sharing or retirement
     income plans, and deferred compensation plans at Employer's expense for the
     period commencing on the first calendar day following the date on which
     such termination occurs and ending on the second anniversary of such;
     provided, however, that the Employee shall not, after his termination of
     employment, be entitled to additional benefits, including contributions,
     benefit accruals and additional service credit for any purpose, under any
     plans of the Employer or SIS, as the case may be, that are intended to
     comply with Section 401 of the Internal Revenue Code of 1986, as amended,
     except as such plans shall otherwise provide.

C.   Outplacement services including professional, secretarial and job search
     support for the period commencing on the first calendar day following the
     date on which such termination occurs and ending on the second anniversary
     of such date at a total cost not to exceed $12,000. Employee shall have the
     option of taking a lump sum payment, less applicable tax deductions, in
     lieu of such outplacement services.

For purposes of this Article VII, the term "SIS Change of Control" shall mean a
change of control as defined in the second sentence of Article II of this
Agreement, except that the term "SIS" shall be substituted for the term
"Employer" in each instance in which the term "Employer" is used in such
definition, the reference to "the purchase of Employer's assets" shall mean the
purchase of all or substantially all of such assets and the reference to "Board
of Directors" as used in such definition shall mean the SIS Board of Directors.

     5.   SIS does hereby confirm that, from and after the date on which the
Acquisition is completed, SIS shall cause GBT, as its wholly owned subsidiary,
to honor the terms and conditions of the Plan in accordance with the
Participation Agreement.

     6.   Each of GBT and Employee hereby confirms and acknowledges that the
terms of the Trust have been amended as of the date hereof to the effect that
the definition of "Change of Control" contained in Section 13(d) of the Trust
pertains to a Change of Control affecting SIS and not GBT.

     7.   Each of GBT and Employee represents and warrants to SIS that attached
to this Amendment are true and complete copies of (i) the Employment Agreement,
the Plan and the Participation Agreement, as each is in full force and effect on
the date hereof, and (ii) the amendment to the Trust referred to in paragraph 6
above, which is in full force and effect on the date hereof

     IN WITNESS WHEREOF, GBT and SIS have caused this Amendment to be executed
and delivered by their duly authorized officers and Employee has executed and
delivered this Amendment in his individual capacity, all as of the day and year
first above written.

<PAGE>

                                SIS BANCORP, INC.


                                By:  /s/  Henry J. McWhinnie
                                     -----------------------
                                     Name: Henry J. McWhinnie
                                     Title: SVP Human Resources


                                GLASTONBURY BANK & TRUST COMPANY

                                By:  /s/  J. Gilbert Soucie
                                     ----------------------
                                     Name: J. Gilbert Soucie
                                     Title: President & CEO


                                EMPLOYEE:

                                /s/ J. Gilbert Soucie
                                    -----------------
                                    J. Gilbert Soucie


<PAGE>

                             EMPLOYMENT AGREEMENT
                             --------------------

     Agreement effective as of October 11, 1995, between Glastonbury Bank and
Trust Company Incorporated, with its principal office at 2461 Main Street,
Glastonbury, Connecticut 06033, (hereinafter referred to as "Employer") and J.
Gilbert Soucie of 39 South Mill Drive, Glastonbury, Connecticut, 06033
(hereinafter referred to as "Employee").

                                  WITNESSETH:

     WHEREAS Employer desires to retain the services of Employee on the terms
hereinafter set forth;

      WHEREAS, Employer also recognizes the continuing possibility that a third
party could acquire Employer or a substantial part of its business, or obtain
through ownership of voting common stock of Employer a position of controlling
influence with respect to Employer;

      WHEREAS Employer further desires to manifest its concern for Employees'
fair treatment and welfare in the event of a change of control and to be assured
that Employee will be available to advise Employer in such circumstances without
being influenced by the impact of a change of control on Employees' future role
with Employer;

     WHEREAS, Employee desires to continue to render services to Employer and
has foregone other employment opportunities and compensation in reliance on the
promises contained in this Agreement;

     NOW THEREFORE, in consideration of the premises and the mutual promises
herein contained, the parties agree as follows:


                                   Article I
                                  Employment

     Employer hereby employs Employee in the position of President and Employee
hereby accepts such employment upon the terms and conditions hereinafter set
forth.

                                  Article II
                                     Term


     The term of this Agreement shall begin on the effective date of a change of
control and will continue for twenty four (24) months thereafter unless sooner
terminated by mutual written agreement of the parties.  For purposes of this
Agreement the term "change of control shall mean (i) the purchase or acquisition
of controlling interest in Employer's common stock or the purchase of Employer's
assets by any person or entity; or (ii) Regulatory Agency action which initiates
effectively causes a change in management of Employer; or (iii) a change in the
majority of the Board of Directors on or after the effective date of this
Agreement.  "Effective date" shall mean the date said change of control shall
take effect based on the purchase or closing documents, change majority of the
Board of Directors, or the Regulatory Agency action as the case may be.

     Notwithstanding the foregoing, if change of control shall occur at any time
within a period of twelve (12) months after the termination of Employee before
the change of control occurs for any reason other than "for cause" as defined in
Article VII of this Agreement, then the Employee shall receive all of the
severance pay and benefits set forth in Article VII upon a change of control.

<PAGE>

                                  Article III
                                 Compensation

     For all services rendered by Employee under this Agreement, Employer shall
pay Employee an annual salary at least equal to Employee's annual salary during
the twelve (12) month period prior to the effective date of the change of
control.  Said salary shall be payable in equal monthly installments commencing
the first of the month following the effective date.

                                  Article IV
                                    Duties

     Employee shall be employed as President during the term of this Agreement.
Employee agrees to devote his entire working time to Employer as directed by the
Board of Directors, provided nothing herein shall prohibit Employee from
personally, and for his own account, investing or trading in real estate,
stocks, bonds, securities, commodities or other forms of investment for his own
benefit. Employee's duties, responsibilities and job location during the term of
this Agreement shall be substantially the same as they were during the twelve
(12) month period prior to the effective date of a change of control.

                                   Article V
                                   Benefits

     During the term of this Agreement, Employee shall be entitled to and shall
receive all benefits and conditions of employment available generally to
employees of Employer at the same level and responsibility pursuant to Employer
plans and policies then in effect during the twelve (12) month period prior to
the effective date of the change of control including by way of illustration,
but not of limitation, Medical and Hospital Insurance, Life Insurance, Pension,
Profit Sharing, or Retirement Income Plans, Annual Vacation, Holidays,
Disability Insurance, Automobile and gas allowance.

                                  Article VI
                                     Bonus

     During the term of this Agreement, Employee shall receive an annual bonus
equal to or greater than the bonus paid Employee during the twelve (12) month
period prior to the effective date of the change of control.

                                  Article VII
                            Severance Pay/Benefits

     If during the term of this Agreement Employee's employment terminates for
any reason other than for cause, death or voluntary leaving, Employee shall
receive the following pay and benefits:

     A.  A payment in Twenty four (24) monthly installments equal to two (2)
     times what the Employee's salary has been for the Twelve (12) months prior
     to the date of termination, commencing on the first of the month following
     the date of termination;

     B.  Continuation of Employee in all Medical, Hospital, Life Insurance,
     Disability, Profit-sharing, Retirement Income Plans, Executive Deferred
     Compensation Plan and automobile and gas allowances at Employer's expense
     for Twenty four (24) months from the date of termination;

<PAGE>

     C.  Out-placement Services including professional, secretarial, and job
     search support for Twenty four (24) months from the date of termination at
     a total cost not to exceed $12,000.00. Employee shall have the option of
     taking a lump sum payment less applicable tax deductions in lieu of
     outplacement;

     For the purpose of this Article, the term "for cause" is defined as the
commission of a felony by employee or the deliberate refusal to render the
services specified in Article IV, provided in the latter case Employer has given
Employee 30 days prior written notice and the opportunity to cure. The term
"voluntary leaving" is defined to be the Employees' leaving employment with
Employer without any work related cause. Work related cause includes, but shall
not be limited to, any change of duties, change of reporting relationship,
change of location of work or other conditions which materially change the
employment relationship that existed during the twelve (12) month period prior
to the effective date of the change of control. Employee shall not be required
to render additional services for the payments referenced above nor shall
Employer restrict Employee's post-termination employment in any manner as a
condition of these payments.

     If the application of this Section, upon a change of control shall cause
the payments under this Agreement, together with other payments the Employee may
be due, to exceed the golden parachute deductibility limits of Section 280g of
the Internal Revenue Code, as amended, or to be a violation of the golden
parachute provisions of Section 18 of the Federal Deposit Insurance Act or an
unsafe or unsound banking practice as provided pursuant to the Comptroller of
Currency Regulations, the payments shall be restricted or spread out to
eliminate the respective problem.  The Board of Directors of the Employer shall
make the determination after it appears the change of control will occur, but
before it actually occurs. The determination of a violation of the golden
parachute provisions of the Federal Deposit Insurance Act or an unsafe or
unsound banking practice shall be triggered by a finding by the Federal Deposit
Insurance Corporation. If such a finding is proposed after a change of control,
the Trustee of the Rabbi Trust under the Executive Deferred Compensation Plan
shall be responsible to make the determination. The Employee shall be notified
of any restriction or potential adverse finding by the Federal Deposit Insurance
Corporation. He shall be given a reasonable opportunity to present his position
to the contrary in person, with representation, before the decision maker.

                                 Article VIII
                               Disability/Death

      If Employee dies or is totally and permanently disabled due to either
mental or physical causes during the term of this Agreement, Employer shall pay
the compensation and benefits specified in Article VII less sickness,
disability, or worker's compensation benefits Employee receives during said
period. Employer shall be furnished with acceptable medical evidence of
Employee's disability. Acceptable medical evidence shall be certification by a
physician satisfactory to both Employer and Employee, certifying that Employee
is then incapable of performing his duties under the Agreement. If the parties
cannot agree upon a physician to make the necessary examination and
certification, the parties shall submit the matter to the President of the local
medical society nearest to the place where the Employee is then physically
located to have a physician designated to make such examination and
certification, which shall be binding. Employer shall pay for all expenses
relating to said examination and certification. Employer shall implement the
provisions of Article VII as of the date of certification of the disability. In
the case of Employee's death during the term of the Agreement, all remaining
severance pay shall be paid to his estate and the Executive Deferred
Compensation Plan benefits shall be paid in accordance with the Plan provisions.

<PAGE>

                                   Article IX
                                 Applicable Law

      This Agreement is made and entered into in the State of Connecticut, and
the laws of Connecticut shall govern its validity and interpretation and the
performance by the parties hereto of their respective duties and obligations
hereunder. The parties agree that jurisdiction and venue for any legal action
arising hereunder shall vest in Courts within the County of Hartford, State of
Connecticut.

                                   Article X
                                     Notice

      Any notice, request, demand or other communication hereunder shall be in
writing and shall be deemed to be duly given when personally delivered to an
officer of the Employer or to the Employee, as the case may be, or when
delivered by mail at the following address:


     For Employee                   For Employer
     ------------                   ------------

     Mr. J. Gilbert Soucie        Chairman
     39 South Mill Drive          Glastonbury Bank & Trust Company
     Glastonbury, CT 06033        2461 Main Street
                                  Glastonbury, CT 06033

                                  Article XI
                                  Arbitration

     Any controversy, claim or dispute arising out of or relating to this
Agreement or breach thereof, may be settled at the option of Employer or
Employee by arbitration in Hartford, Connecticut in accordance with the
expedited Arbitration Rules of the American Arbitration Association, Hartford,
Connecticut office and judgment upon the award rendered by the arbitrator may be
entered in any court having jurisdiction thereof. In reaching his or her
decision, the arbitrator shall have no authority to change or modify any
provision of this Agreement.

                                  Article XII
                               Successors/Assigns

     The terms of this Agreement shall be binding upon and inure to the benefit
of the parties hereto and their respective personal representatives, successors
and assigns and the holders from time to time of any of the stock of Employer.


                                  Article XIII
                                Entire Agreement

     This Agreement supersedes all prior Agreements between the parties
concerning the subject matter hereof and this Agreement constitutes the entire
Agreement between the parties with respect thereto. This Agreement may be
modified only with a written instrument duly executed by each of the parties. No
person has any authority to make any representation or promise on behalf of any
of the parties not set forth herein and this Agreement has not been executed in
reliance upon any representation or promise except those contained herein. No
waiver by any party of any breach of this Agreement shall be deemed to be a
waiver of any preceding or succeeding breach.


<PAGE>

                                  Article XIV
                            Attorneys Fees and Costs

     Should either party be required to pursue action in a Court of Law or
Equity to enforce the terms of this Agreement, the other party shall be required
to reimburse the prevailing party for reasonable attorneys fees and costs of
enforcement, upon judgment, however this provision shall not apply to
arbitration under Article XI in which case each party shall pay for its own
attorneys fees and expenses but Employer shall pay for all costs and fees of any
Arbitrator.

                                   Article XV
                                     Usage

      Any term used in the singular, plural, masculine, feminine or neuter form
shall be singular, plural, masculine, feminine of neuter as proper reading
requires.

                                  Article XVI
                                 Miscellaneous

      Sections and other headings contained in this Employment Agreement are for
reference purposes only and shall not affect in any way the meaning or
interpretation of this Employment Agreement.

      Should any valid Federal or State Law or final determination of
administrative agency or Court of competent jurisdiction affect any provision of
this Agreement the provision or provisions so affected should be automatically
conformed to the law or determination and otherwise the Agreement shall continue
in full force and effect.

     Dated at Glastonbury, Connecticut this 15th day of August, 1997.


Subscribed and Sworn to before me this         EMPLOYEE
15th day of August, 1997                       J. Gilbert Soucie

/s/  Helen P. LaPlante                         /s/  J. Gilbert Soucie
----------------------                         ----------------------
Notary Public                                  (Signature)

Subscribed and Sworn to before me this         EMPLOYER
15th day of August, 1997                       Glastonbury Bank & Trust Company

/s/  Adelina G. Guaschino                      /s/  Ronald E. Bourbeau
-------------------------                      -----------------------
Notary Public                                  Ronald E. Bourbeau,
                                               Chairman, Duly Authorized

Subscribed and Sworn to before me this
15th Day of August, 1997

/s/  Adelina G. Guaschino                      /s/  Grace C. Nome
-------------------------                      ------------------
Notary Public                                  Grace C. Nome,
                                               Chairman, Personnel Committee
  Duly Authorized


<PAGE>

                      THE GLASTONBURY BANK & TRUST COMPANY



                      EXECUTIVE DEFERRED COMPENSATION PLAN



<PAGE>

                      THE GLASTONBURY BANK & TRUST COMPANY
                      ------------------------------------



                      EXECUTIVE DEFERRED COMPENSATION PLAN
                      ------------------------------------



                               TABLE OF CONTENTS
                               -----------------



                                   ARTICLE I
                                   ------- -



                      Purpose of the Plan - Effective Date
                      ------------------------------------



            1.01  Purpose                                      1

            1.02  Effective Date                               1



                                   ARTICLE II
                                   ----------



                                  Definitions
                                  -----------

            2.01  Active Participant                           1

            2.02  Beneficiary                                  1
            2.03  Board of Directors                           1
            2.04  Cause                                        2
            2.05  Change of Control                            2
            2.06  Committee                                    2
            2.07  Earlier Retirement Date                      2
            2.08  Employee                                     2

            2.09  Employer                                     2

            2.10  Executive Officer                            2
            2.11  Insurance Company                            2
            2.12  Normal Retirement Date                       2
            2.13  Participant                                  2
            2.14  Participation Agreement                      3
            2.15  Plan                                         3
            2.16  Policy                                       3
            2.17  Retirement Pension Plan                      3
            2.18  Total Disability                             3
            2.19  Voluntary Leaving                            3


<PAGE>

                                  ARTICLE III
                                  -----------



                                 Administration
                                 --------------



            3.01  Administration                               3





                                   ARTICLE IV
                                   ----------



                         Eligibility for Participation
                         -----------------------------



           4.01   Selection of Executive Officers to be
                  Included in the Plan                         4



                                   ARTICLE V
                                   ---------



                                    Benefits
                                    --------

            5.01  Normal Retirement Benefits                   4

            5.02  Earlier Retirement Benefits                  5
            5.03  Benefits Upon Termination of Employment      5
            5.04  Change in Targeted Amount                    5
            5.05  Payment Options                              6
            5.06  Disability Benefits                          6
            5.07  Termination For Cause                        7


                                 Death Benefits
                                 --------------



            6.01  Pre-Retirement                               7

            6.02  Post Retirement                              7




                                  ARTICLE VII
                                  -----------



                       Discretionary Purchase of Policies
                       ----------------------------------



            7.01  Discretionary Purchase of Policies           7

            7.02  Interest of Participant                      8


<PAGE>

                                  ARTICLE VIII
                                  ------------



                           Termination and Amendment
                           -------------------------



            8.01  Termination and Amendment                    8



                                   ARTICLE IX
                                   ----------



                                Claims Procedure
                                ----------------

            9.01  Determination                                8

            9.02  Review                                       8

            9.03  Decision Binding                             9



                                   ARTICLE X
                                   ---------



                            Miscellaneous Provisions
                            ------------------------


            10.01  No Guarantee of Employment                  9

            10.02  Nonalienation of Benefits                   9

            10.03  Withholding                                 9

            10.04  Gender and Number                           9

            10.05  Titles and Headings                         9

            10.06  Governing Law                              10

            10.07  Separability Clause                        10



<PAGE>

                      THE GLASTONBURY BANK & TRUST COMPANY
                      ------------------------------------



                      EXECUTIVE OEFERRED COMPENSATION PLAN
                      ------------------------------------



                                   ARTICLE I
                                   ---------



                      Purpose of the Plan - Effective Date
                      ------------------------------------



Section 1.01 - Purpose -
------------   -------



          The purpose of this p1an, which shall be known as the "The Glastonbury
Bank & Trust Company Executive Deferred Compensation Plan" (hereinafter referred
to as the "Plan"), is to provide for the payment of death and supplemental
retirement benefits to or in respect to Executive Officers of The Glastonbury
Bank & Trust Company (hereinafter referred to as "Glastonbury"). This Plan is
intended to assist Glastonbury in attracting and retaining Executive Officers of
outstanding ability.



Section 1.02 - Effective Date -
------------   --------------



                 This Plan shall be effective December 1, 1995.



                                   ARTICLE II
                                   ----------



                                  Definitions
                                  -----------



Section 2.01 - Active Participant -
------------   ------------------



          Shall mean an Executive Officer who becomes covered under this Plan as
provided in ARTICLE IV and remains covered until his participation ceases upon
retirement or termination of employment with Glastonbury, or termination of the
Plan.



Section 2.02 - Beneficiary -
------------   -----------



          Shall mean any one or more persons, corporations or trusts last
designated by the Participant to receive the death benefits provided the
Participant under this Plan.   All such designations shall be by written
instrument filed with, and in form satisfactory to, the Chairman of the Board of
Glastonbury.  All such designations shall be revocable at any time by the
Participant, without the consent of any Beneficiary, by written instrument filed
with the Chairman of the Board of Glastonbury.  If no designation is in effect
when any death benefits payable under this Plan become due, the Beneficiary
shall be the spouse of the Participant, or if no spouse is living, the
representatives of the Participant's estate.



Section 2.03 - Board of Directors -
------------   ------------------



           Shall mean the Board of Directors of Glastonbury, sometimes referred
to as the Board.






<PAGE>

Section 2.04 - Cause -
------------   -----



           Shall mean the occurrence of any event defined as "cause" in the
Executive Officer's Employment Agreement.



Section 2.05 - Change of Control -
------------   -----------------



          Shall mean the occurrence of any event defined as a "change  of
control"  in  the  Executive  Officer's  Employment Agreement.



Section 2.06 - Committee -
------------   ---------



          Shall mean the Executive Committee of the Board of Directors.  After a
change of control, it shall mean the Trustee under the "Rabbi Trust" under this
Plan.



Section 2.07 - Earlier Retirement Date -
------------   -----------------------



          Shall mean the Participant's Earlier Retirement Date as determined
under the Executive Officer's Participation Agreement.



Section 2.08 - Employee -
------------   --------



           Shall mean a person, including an Executive Officer, employed by
Glastonbury.



Section 2.09 - Employer -
------------   --------



           Shall mean The Glastonbury Bank & Trust Company.

Section 2.10 - Executive Officer -
------------   -----------------



          Shall mean any officer of Glastonbury who has an Employment Agreement
and who is designated as an Executive Officer for purposes of this Plan by the
Chairman of the Board of Glastonbury or the Committee.



Section 2.11 - Insurance Company -
------------   -----------------



          Shall mean any legal reserve life insurance company which shall issue
a Policy in accordance with ARTICLE VII of this Plan.



Section 2.12 - Normal Retirement Date -
------------   ----------------------

           Shall mean the Participant's sixty-fifth (65th) birthday.

Section 2.13 - Participant -
------------



          Shall mean the individual Participants in the Plan as selected by the
Chairman of the Board or the Committee, and shall be limited to Executive
Officers.



<PAGE>

Section 2.14 - Participation Agreement -
------------   -----------------------



          Shall mean the document used by an Executive Officer and Glastonbury
to evidence the Executive Officer's participation in this Plan.



Section 2.15 - Plan
------------

           Shall mean this "Executive Deferred Compensation Plan".

Section 2.16 - Policy -
------------   ------



           Shall mean any life insurance policy purchased by Glastonbury on the
life of a Participant.



Section 2.17 - Retirement Pension Plan -
------------   -----------------------



          Shall mean Glastonbury's defined benefit retirement pension plan as
currently in effect and as the same may be amended from time to time, and any
successor thereto or replacement thereof.



Section 2.18 - Total Disability -
------------   ----------------



          For purposes of this Plan, a Participant shall be considered totally
disabled if he is eligible to receive disability payments under any long term
disability program maintained by the Employer.



Section 2.19 - Voluntary Leaving -
------------   -----------------



             Shall mean the occurrence of any event defined as "Voluntary
   Leaving" in the Executive Officer's Employment Agreement.



                                  ARTICLE III
                                  -----------



                                 Administration
                                 --------------



   Section 3.01 - Administration -
   ------------   --------------



             This Plan will be administered by and under the direction of the
   Chairman of the Board.  The Chairman of the Board shall adopt, and may from
   time to time modify or amend, such rules and guidelines consistent herewith
   as he may deem necessary or appropriate for carrying out the provisions and
   purposes of the Plan, which, upon his adoption and so long as in effect,
   shall be deemed a part hereof to the same extent as if set forth in the Plan
   (hereinafter referred to as the "Administrative Guidelines") .  Any
   interpretation and construction by the Chairman of the Board of any provision
   of, and the determination of any question arising under, the Plan; the
   Administrative Guidelines, and any Participation Agreement under the Plan,
   shall be final and conclusive.



<PAGE>

                                   ARTICLE IV
                                   ----------



                         Eligibility for Participation
                         -----------------------------



   Section 4.01 - Selection of Executive Officers to be Included in the Plan -
   ------------   ----------------------------------------------------- ----



   Employees included in the Plan will be those Executive Officers who are
   selected by the Chairman of the Board and approved by the Board of Directors
   or the Committee.  It is intended that Participants in the Plan will include
   only those Executive Officers who, in the opinion of the Chairman of the
   Board of the Committee, are most likely to make a substantial contribution to
   the success of Glastonbury.  Participation in the Plan shall be evidenced by
   a Participation Agreement between the Chairman of the Board (or his
   delegate), in the name of and on behalf of Glastonbury, and the Executive
   Officer in such form and substance as shall be approved from time to time by
   the Chairman.



                                   ARTICLE V
                                   ---------



                                    Benefits
                                    --------



Section 5.01 - Normal Retirement Benefits -
------------   --------------------------



           (a)  Upon termination of employment with Glastonbury the Participant
                has attained his Normal Retirement Date, or at such later time
                as both Glastonbury and the Participant shall agree, the
                Participant shall be entitled to a Normal Retirement Benefit
                under this Plan. The annual amount of the Participant's Normal
                Retirement Benefit shall be equal to the amount specified in the
                Participation Agreement.  Glastonbury shall pay such benefit to
                the Participant in equal monthly installments for the life of
                the Participant with one hundred percent (100%) of the
                Participant's monthly benefit continuing to be paid upon his
                death to his spouse, if such spouse were married to him at the
                date benefit payments commence and at the date of his death and
                such spouse survives him.



           (b)  The Normal Retirement Benefit payable to a Participant who
                continues in employment after his Normal Retirement Date shall
                not be actuarially increased to take account of the commencement
                of such benefits after the Participant's Normal Retirement Date.



           (c)  The first installment of Normal Retirement Benefits under this
                Plan shall be paid on the first day of the month coincident with
                or next following the date on which the Participant's retirement
                occurs, and subsequent installments shall be paid on the first
                day of each subsequent month.



<PAGE>

Section 5.02 - Earlier Retirement Benefits -
------------   ---------------------------



           (a)  Upon termination of employment with Glastonbury on or after the
                Participant's Earlier Retirement Date and before his Normal
                Retirement Date, a Participant who elects to retire on Earlier
                Retirement under the Retirement Pension Plan shall be considered
                to have elected Earlier Retirement under this Plan, and shall be
                entitled to an Earlier Retirement Benefit under this Plan if he
                meets the requirements contained in his Participation Agreement
                for Earlier Retirement Benefits.  The annual amount of the
                Participant's Earlier Retirement Benefit shall be determined in
                accordance with his Participation Agreement.  Glastonbury shall
                pay such benefit to the Participant in equal monthly
                installments for the life of the Participant with one hundred
                percent (100%) of the Participant's monthly benefit continuing
                to be paid upon his death to his spouse, if such spouse were
                married to him at the date benefit payments commence and at the
                date of his death and such spouse survives him.


           (b)  The first installment of Earlier Retirement Benefits under this
                Plan shall be paid on the first day of the month coincident with
                or next following the date on which the Participant's retirement
                occurs, and subsequent installments shall be paid on the first
                day of each subsequent month.



Section 5.03 - Benefits Upon Termination of Employment -
------------   ---------------------------------------



           (a)  Upon termination of employment with Glastonbury before the
                Participant's Normal Retirement Date or Earlier Retirement Date,
                a Participant shall be entitled to a benefit under this Plan to
                the extent he meets the vesting requirements contained in the
                Termination of Employment Benefit provisions of his
                Participation Agreement. Glastonbury shall pay such benefit to
                the Participant in equal monthly installments for the life of
                the Participant with one hundred percent  (100%) of the
                Participant's monthly benefit continuing to be paid upon his
                death to his spouse, if such spouse were married to him at the
                date benefit payments commence and at the date of his death and
                such spouse survives him.


           (b)  The first installment of Termination of Employment Benefits
                under this Plan shall be paid on the first day of the month
                coincident with or next following the date on which the
                Participant's Normal Retirement Date occurs, and subsequent
                installments shall be paid on the first day of each subsequent
                month.



Section 5.04 - Change in Targeted Amount -
------------   -------------------------



          A Participant shall execute a new Participation Agreement if the
targeted amount specified in his Participation Agreement is to be increased or
decreased because of a change in his office or for any other reason.  The
effective date of his participation as specified in his new Participation
Agreement shall be the effective date  of  his  participation as specified in
his original Participation Agreement.



<PAGE>

Section 5.05 - Payment Options -
------------   ---------------



          Benefits under this paragraph shall be paid in accordance with the
payment method specified in Sections 5.01, 5.02 and 5.03, unless a Participant
                            -------------  ----     ----
elects (in accordance with the second paragraph of this Section) an optional
method of payment described in the third paragraph of this Section.  An optional
method of payment may be elected at any time prior to the Participant's
scheduled benefit commencement date under this Plan.  The amount of the benefit
under any such optional method of payment shall be the Actuarial Equivalent (as
determined under the fourth paragraph of this Section) of the amount of the
benefit that would otherwise have been payable under Sections 5.01, 5.02, and
                                                     -------------- ----
5.03.
----



          An optional method of payment may be elected by written instrument
filed with, and in form satisfactory to, the Chairman of the Board of
Glastonbury.  All such elections shall be revocable at any time prior to the
Participant's scheduled benefit commencement date under this Plan by the
Participant by written instrument filed with the Chairman of the Board of
Glastonbury.



           The following shall be the available optional methods of payment
under the Plan:



           (a)  10 Years Certain and Life Option -
                --------------------------------



                This option provides a monthly benefit for the life of the
                Participant but in no case for less than one hundred twenty
                (120) months.  If the Participant dies before he has received at
                least one hundred twenty (120) monthly payments, monthly
                payments will be continued to his Beneficiary until a total of
                one hundred twenty (120) monthly payments has been made to the
                Participant and his Beneficiary.



           (b)  50% Joint and Survivor Spouse Option -
                ------------------------------------



                This option provides a monthly benefit for the life of the
                Participant with fifty percent (50%) of the Participant's
                monthly benefit continuing to be paid upon his death to his
                spouse, if such spouse were married to him at the date benefit
                payments commence and at the date of his death and such spouse
                survives him.  This option shall be effective only if the
                Participant and his spouse are alive on the date benefit
                payments commence.



          For purposes of this  Section,  the term "Actuarial Equivalent" shall
mean a benefit of equivalent value to the benefit that would otherwise have been
provided to the Participant determined on the basis of the following actuarial
assumptions: (a) interest at seven percent (7%); and (b) the UP-1984 Mortality
Table.



Section 5.06 - Disability Benefits -
------------   -------------------



          If a Participant incurs a Total Disability during his employment or
while on leave of absence approved by the Employer, the Participant will
continue to be eligible for all retirement benefits provided by the Plan.  The
period of his disability shall be considered as service and active participation
in this Plan for purposes of Sections 5.01, 5.02 and 5.03.
                             -------------  ----     ----






<PAGE>

Section 5.07 - Termination For Cause -
------------   ---------------------



          If a Participant's employment with Glastonbury is terminated for Cause
at any time, his benefits under this Plan shall be forfeited, and neither the
Participant nor his Beneficiary or any other person shall have any further
rights under this Plan.



                                   ARTICLE VI
                                   ----------



                                 Death Benefits
                                 --------------



Section 6.01 - Pre-Retirement -
------------   --------------



          If a Participant who is an Employee of Glastonbury dies before his
actual retirement or termination of employment, or while he is on a leave of
absence approved by the Employer, or while he is on Total Disability,
Glastonbury shall pay to the Participant's Beneficiary the pre-retirement death
benefit specified in the Participant' S Participation Agreement.



Section 6.02 - Post-Retirement -
------------   ---------------



(a)
           If a Participant dies after he has separated from the employ of
             Glastonbury and  before the commencement of the payment of benefits
             under this Plan, Glastonbury shall pay to the Participant's
             Beneficiary an annual benefit equal to the amount determined in
             accordance with his Participation Agreement as of the Participant's
             date of retirement or other termination of employment.  If his
             death occurs before his Earlier Retirement Date, the amount of
             benefit shall be reduced actuarially under the provisions of  the
             last paragraph of Section 5.05 for payment before his Normal
                               ------------
             Retirement Date.  Such benefit shall be payable monthly beginning
             on the first day of the month coincident with or next following the
             month in which the Participant's death occurs, and shall continue
             for the Beneficiary's life.



           (b)  If a Participant dies after benefit payments have begun,
                Glastonbury shall pay the remaining benefits payable, if any,
                under the method of payment in effect at the date of his death.



                                  ARTICLE VII
                                  -----------



                        Discretionary Purchase of Policies
                        ----------------------------------



Section 7 .01 - Discretionary Purchase of Policies -
-------------   ----------------------------------



Glastonbury may, but shall not be required to, offset its obligations under this
Plan through the purchase of life insurance on the life of each Participant.
Each Participant agrees to cooperate in the securing of life insurance on the
Participant's life by furnishing such information as Glastonbury and the
Insurance Company may require, taking such physical examinations as may be
necessary and taking any other such action as may be requested by Glastonbury
and the Insurance Company to obtain such insurance coverage.  If the Participant
refuses to cooperate in the securing of life insurance, Glastonbury shall have
no further obligation under this Plan.

<PAGE>

Section 7.02 - Interest of Participant -
------------   -----------------------



          Neither the Participant nor any Beneficiary shall have any interest in
any Policy purchased as provided in Section 7.01 nor in any other assets of
                                    ------------
Glastonbury.  The Participant's and Beneficiary's only interest hereunder shall
be the right to receive the benefits set forth herein.   Nothing in this Plan
shall be construed as the creation by Glastonbury of an escrow account or trust
fund or as any other form of asset segregation, it being the intention and
understanding of the parties that Glastonbury's obligations under this Plan
shall be unfunded and that the Participant and any Beneficiary shall, as to
claims under this Plan, be no more than a general creditor of Glastonbury.



                                  ARTICLE VIII
                                  ------------



                        Termination and Amendment
                        -------------------------



Section 8.01 - Termination and Amendment -
------------   -------------------------



          The Board of Directors of Glastonbury reserves in its sole and
exclusive discretion the right at any time, and from time to time, to amend this
Plan in any respect or terminate this Plan without restriction and without the
consent of any Participant or Beneficiary; provided, however, that neither an
amendment nor termination of the Plan may, without written approval of a
Participant, reduce or terminate any accrued benefit to or in respect of a
Participant, or eliminate any optional method of payment, except that after a
Change of Control an action of the Board of Directors of Glastonbury to amend or
terminate the Plan shall be effective only if all affected Participants give
their written approval to such action.



                                   ARTICLE IX
                                   ----------



                                Claims Procedure
                                ----------------



Section 9.01 - Determination -
------------   -------------



          The Chairman shall be responsible for determining all claims for
benefits under this Plan.  Within ninety (90) days after receiving a claim, the
Chairman shall notify a claimant of his decision.  If the decision is adverse to
the claimant, the Chairman shall advise him of the reasons for the decision, of
the Plan provision involved, of any additional information he must provide to
perfect his claim and of his right to request a review of the decision.
Regardless, after a change of control, the Trustee of the Rabbi Trust shall act
in place of the Chairman and the Committee under the Claims Procedure.



Section 9.02 - Review -
------------   ------



          A claimant may request a review of an adverse decision by written
request to the Committee made within sixty (60) days after receipt of the
decision.  The claimant or his attorney may review pertinent documents and
submit written issues and comments. Within sixty (60) days after receiving a
request for review, the Committee shall notify the claimant in writing of (a)
its decision, (b) the reasons therefor, and (c) the Plan provisions upon which
it is based.



<PAGE>

Section 9.03 - Decision Binding -
------------   ----------------



          The decision of the Committee after such review shall be made in the
Committee's sole and absolute discretion, and shall be final and binding upon
Glastonbury and the claimant.



                                   ARTICLE X
                                   ---------



                         Miscellaneous Provisions
                         ------------------------



Section 10.01 - No Guarantee of Employment -
-------------   --------------------------



          Nothing contained herein shall be deemed to give any individual the
right to be retained in the service of the Employer or to interfere with the
rights of the Employer to discharge any individual at any time, with or without
cause.



Section 10.02 - Nonalienation of Benefits -
-------------   -------------------------



          No benefits payable hereunder may be assigned, pledged, mortgaged or
hypothecated and, to the extent permitted by law, no such benefits shall be
subject to legal process or attachment for the payment of any claims against any
person entitled to receive the same. Regardless of the preceding sentence, if at
any time payments are to be made in accordance with the provisions of this Plan
and the Participant or the Beneficiary or both are in default under any
indebtedness to the Employer, then the payments remaining to be made to the
Participant or the Beneficiary or both may, at the discretion of the Board of
Directors of the Employer, be reduced by the amount of such indebtedness;
provided, however, that an election by the Employer not to reduce any such
payment or payments shall not constitute a waiver of its claim for such
indebtedness.


Section 10.03 - Withholding -
-------------   -------------



          Retirement payments made by Glastonbury under this Plan shall be
subject to withholding at the time of such payment, as shall be required under
any income tax or other law, whether of the United States or any other
jurisdiction.



Section 10.04 - Gender and Number -
-------------   -----------------



          The masculine pronoun wherever used herein shall include the feminine
gender and the feminine the masculine, and the singular number as used herein
shall include the plural and the plural the singular, unless the context clearly
indicates a different meaning.



Section 10.05 - Titles and-Headings -
-------------   -------------------



          The titles to ARTICLES and headings of Section or subsection of this
Plan are for convenience of reference and, in case of any conflict, the text of
the Plan, rather than titles and headings, shall control.



<PAGE>

Section.10.06 - Governing Law -
-------------   -------------



          The validity, construction and effect of the provisions of this Plan
in all respects shall be governed and regulated according to and by the laws of
the State of Connecticut and to the extent the laws of the State of Connecticut
are superseded by the laws of the United States of America, by the laws of the
United States of America.



Section 10.07 - Separability Clause -
-------------   -------------------



          The invalidity or unenforceability of any provision of this Plan shall
in no way affect the validity or enforceability of any other provision.



<PAGE>

                     THE GLASTONBURY BANK & TRUST COMPANY
                     ------------------------------------

                     EXECUTIVE DEFERRED COMPENSATION PLAN
                     ------------------------------------


                            PARTICIPATION AGREEMENT
                            -----------------------

          The undersigned, J. Gilbert Soucie (hereinafter referred to  as  the
"Executive Officer"),  having been selected by the Chairman (hereinafter
together with his authorized representatives, referred to as the "Chairman") of
the Board of Directors of The Glastonbury Bank and Trust Company (hereinafter
referred to as "Glastonbury") or the Committee as a Participant, and approved by
the Board of Directors as a Participant, pursuant to the provisions thereof, in
the "Glastonbury Bank & Trust Company Executive Deferred Compensation Plan"
(hereinafter referred to as the "Plan") , and Glastonbury, hereby agree as
follows:


     (a) Executive Officer, effective as of December 1, 1995, shall became a
         Participant in the Plan (a copy of which is attached hereto and
         incorporated by reference).

     (b) Executive Officer agrees and covenants that the Executive Officer's
         participation in the Plan shall be subject to (and that the Executive
         Officer shall be bound by) all the terms and conditions of the Plan,
         and any and all rules and guidelines adopted thereunder by the
         Chairman, as the same may be amended from time to time; Executive
         Officer expressly acknowledges and agrees that any interpretation and
         construction by the Chairman and/or the Committee of any provisions of,
         and the determination of any question arising under the Plan and this
         Agreement shall be final, binding, and conclusive.

     (c) Executive Officer shall furnish to the Chairman all information
         requested by him with respect to the Plan.

     (d) Executive Officer shall execute such other or additional documents
         and/or instruments and take such actions as the Chairman may require in
         connection with his administration of the Plan.

    (e)  Executive Officer shall answer truthfully and fully any and all
         questions and supply any and all information which the Chairman deems
         necessary or desirable for the proper administration of the Plan,
         without any reservations whatsoever.

    (f)  Executive Officer shall cooperate with the Chairman, appropriate
         officers and employees of Glastonbury and any Insurance Company or
         Companies selected by Glastonbury, without any reservations whatsoever,
         with respect to any Policy or Policies purchased by Glastonbury in
         connection with some or all of its obligations under the Plan and this
         Agreement or any other program of deferred compensation; Glastonbury
         shall be the owner of and possess all incidents of ownership as to any
         such Policy or Policies which are part of the Plan, and the Executive
         Officer shall have no right, title, or interest in or to any such
         Policy.

    (g)  Neither the adoption of the Plan nor its operation shall in any way
         affect the right and power of the Employer to dismiss or otherwise
         terminate the employment or change the terms of employment or amount of
         compensation of the Executive Officer, at any time for any reason with
         or without cause.

    (h)  Glastonbury shall pay to the Executive Officer at his Normal Retirement
         Date, subject to the reduction in the targeted amount contained in
         Sections 5.02 and 5.03 of the Plan and this Participation Agreement, if
         -------------     ----
         any, $60,000.00 per year, at the time and in the form specified in the
         Plan.


<PAGE>

    (i)  Early Retirement Benefits. Participant may elect in writing to commence
         receiving payments as of the first of any month on or after his sixty-
         third (63rd) birthday but before his Normal Retirement Date with a 5/12
         of 1% reduction for each month earlier than his Normal Retirement Date
         at any time no later than thirty (30) days following his retirement.

    (j)  Termination of Employment Benefits. The Executive Officer shall be
         entitled to the percentage specified below of the benefit specified in
         (h) of this Agreement, upon termination of employment at the ages
         specified below, payable at his Normal Retirement Date:

         Age                    Vested Interest
         ---                    ---------------

         58                           50%
         59                           60%
         60                           70%
         61                           80%
         62                           90%
         63                          100%


    (k)  Glastonbury shall pay a pre-retirement death benefit to the Executive
         Officer's Beneficiary upon the death of the Executive Officer, subject
         to the requirements of Section 6.01 of the Plan, in a lump sum amount
         equal to $1,500,000.00.

    (l)  Executive Officer hereby designates the Beneficiary and Contingent
         Beneficiary with respect to the death benefits provided for in Sections
                                                                        --------
         6.01 and 6.02 of the Plan.
         ----     ----

    Beneficiary(ies):


         Name:  /s/  Joyce B. Soucie
                --------------------

         Social Security Number:
                                  -------------------------------

         Address:  39 S. Mill Drive
                   ----------------

                   S. Glastonbury, CT 06073
                   ------------------------


         Contingent Beneficiary(ies):

             Name:
                    ------------------------------------------

             Social Security Number:
                                      ------------------------

             Address:
                         -----------------------------------------

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

         The Executive Officer may change the Beneficiary or Beneficiaries or
         Contingent Beneficiary or Contingent Beneficiaries in this Agreement by
         delivering in writing to the Chairman notice of a change of Beneficiary
         on a form provided by the Chairman.

         (m)  The Chairman, in his discretion, may terminate an Executive
              Officer's participation in the Plan and entitlement to any
              benefits thereunder to or in respect of the Executive Officer,
              upon the failure of the Executive Officer to fully and completely
              comply with the provisions of this


<PAGE>

          Agreement.


     (n)  This Agreement shall be binding upon the Executive Officer and the
          Executive Officer's heirs, representatives, administrators, executors,
          and successors.

     (o)  Any term defined in the Plan shall have in this Agreement the same
          meaning given to it in the Plan, unless the context clearly indicates
          a different meaning.

     IN WITNESS WHEREOF, the Executive Officer and The Glastonbury Bank & Trust
Company have executed this Agreement this 15th day of  August, 1997.


Witness:                    THE GLASTONBURY BANK & TRUST COMPANY


/s/  Adelina G. Guaschino               /s/  Ronald E. Bourbeau
-------------------------               -----------------------
                                        Ronald E. Bourbeau,
                                        Chairman, Duly Authorized

/s/  Adelina G. Guaschino        By:    /s/  Grace C. Nome
-------------------------               ------------------
                                        Grace C. Nome
                                        Chairman, Personnel Committee

/s/  Helen P. LaPlante                  /s/  J Gilbert Soucie
----------------------                  ---------------------
                                        J. Gilbert Soucie


<PAGE>

                   AMENDMENT TO TRUST UNDER GLASTONBURY BANK
                   AND TRUST COMPANY, INC. EXECUTIVE DEFERRED
                    COMPENSATION PLAN AND OTHER ARRANGEMENTS
                    ----------------------------------------

     Pursuant to Section 12(a) of the Trust Agreement dated August 15, 1997, the
Company, Trustee and Participants agree that Section 13(d) of the Trust
Agreement shall be and hereby is amended and restated in its entirety to read as
follows:

           (d) For purposes of this Trust, Change of Control shall mean: (i) the
     purchase or acquisition of a controlling interest in the common stock of
     SIS Bancorp, Inc. ("SIS") or the purchase of all or substantially all of
     SIS's assets by any person or entity; or (ii) Regulatory Agency action
     which initiates or effectively causes a change in management of SIS; or
     (iii) a change in the majority of the Continuing Directors of SIS on or
     after the date on which SIS's acquisition of 100% of the common stock of
     Employer is consummated.  The term "Continuing Director" means those
     persons who either serve on the SIS Board of Directors as of the date on
     which SIS acquires 100% of the common stock of Employer or who are
     nominated or elected to serve on the SIS Board of Directors by a majority
     of the Continuing Directors then in office.


                                  GLASTONBURY BANK & TRUST COMPANY

December 16, 1997            By:  /s/  Harvey A. Katz
-----------------                 -------------------
Date                              Harvey A. Katz, Director


                             By:  /s/  Alden A. Ives
                                  ------------------
                                  Alden A. Ives, Director

                             TRUST COMPANY OF CONNECTICUT, TRUSTEE

December 16, 1997            By:  /s/  David B. Payne
-----------------                 -------------------
Date                              David B. Payne, President