================================================================================

                                    MEDFORD
                                  SAVINGS BANK

                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN


================================================================================


                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                               BASIC PLAN DOCUMENT

                                TABLE OF CONTENTS


                                    ARTICLE I

                                   DEFINITIONS

1.1   Actuarial Equivalent                                        1
1.2   Average Compensation                                        1
1.3   Beneficiary                                                 1
1.4   Board                                                       1
1.5   Compensation                                                1
1.6   Construction of Contract                                    1
1.7   Disability                                                  1
1.8   Early Retirement Age                                        1
1.9   Election                                                    1
1.10  Employee                                                    1
1.11  Employer                                                    1
1.12  Entry Date                                                  1
1.13  IRC                                                         1
1.14  Normal Form of Benefit                                      1
1.15  Normal Retirement Age                                       2
1.16  Normal Retirement Benefit                                   2
1.17  Participant                                                 2
1.18  Plan                                                        2
1.19  Plan Administrator                                          2
1.20  Plan Year                                                   2
1.21  Retirement Date                                             2
1.22  Social Security Benefit                                     2
1.23  Termination Date                                            2
1.24  Vested Benefit                                              2
1.25  Years of Service                                            2

                                   ARTICLE II

                                    BENEFITS

2.1   Accrued Benefit                                             3
2.2   Automatic Pension                                           3
2.3   Optional Forms of Payment                                   3
2.4   Payment of the Accrued Benefit                              3
2.5   Early Retirement Benefit                                    3
2.6   Late Retirement Benefit                                     3
2.7   Termination of Employment Benefit                           3
2.8   Denial of Benefits                                          3


                                   ARTICLE III

                                 DEATH BENEFITS

3.1   Death Benefit                                               4
3.2   Designation of Beneficiary                                  4
3.3   Death of Participant After Retirement or Termination of     4
      Employment

                                   ARTICLE IV

                               DISABILITY BENEFITS

4.1   Disability Benefits                                         5
4.2   Return to Work                                              5

                                    ARTICLE V

                                     FUNDING

5.1   Investment                                                  6

                                   ARTICLE VI

                                  MISCELLANEOUS

6.1   Alienability                                                7
6.2   Amendment by Employer                                       7
6.3   Expenses                                                    7
6.4   Limitation                                                  7
6.5   Change of Control                                           7
6.6   Violation of Agreement                                      8
6.7   For Cause Clause                                            8
6.8   Non-Compete Clause                                          8


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


ADOPTION AGREEMENT

APPENDIX A     Supplemental Executive Retirement Plan Agreement
APPENDIX B     Change of Beneficiary Form
APPENDIX C     Application for Plan Benefits
APPENDIX D     Sample ERISA Department of Labor Statement
APPENDIX E     Sample Votes of Board


                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                               BASIC PLAN DOCUMENT


                                    ARTICLE I

                                   DEFINITIONS

1.1   Actuarial Equivalent means any benefit under this Plan which, at any time,
      has the same present value as a straight life annuity commencing at Normal
      Retirement Age based on 6 percent interest and the 1971 Individual Annuity
      Mortality Table for males set back 3 years, discounted to the payment
      commencement date by 7 percent, or by interest rates and mortality
      specified in Section 2.3 of Article II, if applicable.

1.2   Average Compensation means the average of the Participant's highest 3
      consecutive Plan Years Compensation prior to his Retirement Date unless
      otherwise elected in Section A3 of the Adoption Agreement.

1.3   Beneficiary shall mean the person or persons designated by the Participant
      to receive benefits under the Plan after the death of the Participant.

1.4   Board shall mean the Board of Directors of the Employer.

1.5   Compensation means the definition elected in Section A3 of the Adoption
      Agreement.

1.6   Construction of Contract shall be made without regard to the gender or
      whether words are used in the singular or plural unless the context
      requires such interpretation.

1.7   Disability means the Participant's entitlement to Social Security
      disability income benefits.

1.8   Early Retirement Age is the earliest of the ages elected in Section A4(b)
      of the Adoption Agreement.

1.9   Election means a written instrument executed by a Participant and filed
      with the Plan Administrator on or before its effective date, exercising
      one or more rights under this Plan.

1.10  Employee shall mean each current or future Employee of the Employer who is
      a member of a select group of management or otherwise highly compensated
      personnel as determined by the Board.

1.11  Employer means the Medford Savings Bank, its successors and assigns, any
      subsidiary or affiliated organizations authorized by the Board to
      participate in this Plan with respect to their Employees, and any
      organization into which the Employer may be merged or consolidated or to
      which all or substantially all of its assets may be transferred.

1.12  Entry Date means the date that an Employee satisfies the eligibility
      requirements set in Section A5 of the Adoption Agreement.

1.13  IRC means the Internal Revenue Code of 1986 and the appropriate section
      thereof is designated by the numbers following IRC.

1.14  Normal Form of Benefit means an annuity payable for the life of the
      Participant ceasing at his death.


                                        1


1.15  Normal Retirement Age means the age elected in Section A4(a) of the
      Adoption Agreement.

1.16  Normal Retirement Benefit means the Accrued Benefit payable to the
      Participant upon separation from service at Normal Retirement Age under
      the Plan.

1.17  Participant means an Employee who has satisfied the eligibility
      requirements contained in Section A5 of the Adoption Agreement.
      Participation will commence on the Employee's Entry Date. A terminated
      Employee who has a Vested Benefit or a Beneficiary entitled to benefits
      hereunder is an Inactive Participant.

1.18  Plan means the Employer's Supplemental Executive Retirement Plan.

1.19  Plan Administrator shall mean the individual designated by the Board to
      administer the Plan.

1.20  Plan Year means the period specified in Section A2 of the Adoption
      Agreement.

1.21  Retirement Date means the date that payment of a Participant's Accrued
      Benefit commences which shall be the first day of the month following
      Normal Retirement Age unless the Participant elects a different Retirement
      Date with the consent of the Employer.

1.22  Social Security Benefit means the monthly old age insurance benefit the
      Participant is first entitled to receive at his Social Security Retirement
      Age. Prior to his Social Security Retirement Age it will be assumed that
      the Participant will continue to earn the same annual Compensation which
      is in effect for him and that the Social Security law will not change
      thereafter, and by using his actual salary history, if available, or by
      estimating his prior Compensation using a 5% salary scale projected
      backwards.

1.23  Termination Date means the date a Participant ceases to be an Employee.

1.24  Vested Benefit means an Accrued Benefit which is non-forfeitable. An
      Accrued Benefit derived from Employer Contributions is 100% vested at the
      earliest of the Participant's Early Retirement Age, or at an earlier
      mandatory Retirement Age enforced by the Employer, or at his Disability or
      his death and prior thereto as set in Section A7 of the Adoption
      Agreement.

1.25  Years of Service shall be defined as elected in Section A6 of the Adoption
      Agreement.


                                        2


                                   ARTICLE II

                                    BENEFITS

2.1   Accrued Benefit means the benefit derived from Employer contributions that
      a Participant will begin to receive at Normal Retirement Age, as elected
      in A8 of the Adoption Agreement. For purposes of determining the amount of
      benefits payable under any qualified plan of the Employer, benefits
      attributable to Employee contributions, shall not be considered.

2.2   Automatic Pension means a straight life annuity for a Participant who is
      not married on the Retirement Date and an actuarially equivalent joint &
      survivor annuity for a Participant who is married on the Retirement Date.

2.3   Optional Forms of Payment. In lieu of the Automatic Pension, the
      Participant may elect, any time prior to the date specified in Section 2.5
      below, Actuarial Equivalent Optional Forms of Payment as provided in
      Sections A9, A11 and A12 of the Adoption Agreement.

      Lump sum payments of the defined benefit portion of the Accrued Benefit
      shall be based on the mortality table and interest rates in Section 1.1.

2.4   Payment of the Accrued Benefit shall begin effective with the first day of
      the month next following termination of employment and, unless the
      Participant elects otherwise and with the written approval of the Board,
      no later than 60 days after the later of the last day of the Plan Year in
      which the Participant:

      a)  attains Normal Retirement Age; or
      b)  terminates his service with the Employer.

2.5   Early Retirement Benefit. The amount payable to a Participant who
      terminates employment after attaining Early Retirement Age but before
      Normal Retirement Age is the Actuarial Equivalent of the Participant's
      Accrued Benefit payable at Normal Retirement Age. The Early Retirement
      Benefit is payable as provided in Sections 2.2 and 2.3 of the Plan.

2.6   Late Retirement Benefit. The amount payable to a Participant who continues
      working after Normal Retirement Age is the Participant's Accrued Benefit
      upon retirement. The Late Retirement Benefit is payable as provided in
      Sections 2.2 and 2.3 of this Plan.

2.7   Termination of Employment Benefit. The amount payable at the Termination
      Date to a Participant who terminates employment prior to Early Retirement
      Age and satisfies the Vesting requirement in A7 of the Adoption Agreement
      is the Actuarial Equivalent of the Accrued Benefit payable at Normal
      Retirement Age. The Termination of Employment Benefit is payable as
      provided in Sections 2.2 and 2.3 of this Plan.

2.8   Denial of Benefits. The Plan Administrator shall give a written
      explanation to the Participant, setting forth the specific reasons for the
      denial of any benefit.


                                        3


                                   ARTICLE III

                                 DEATH BENEFITS

3.1   Death Benefit. If a Participant dies prior to his Retirement Date, his
      designated Beneficiary will be paid, commencing on the first day of the
      month next following the Participant's death, (i) the Actuarial Equivalent
      value of his Accrued Benefit on the day he died, payable under any
      Optional Form of Payment provided in Section A9 of the Adoption Agreement.

      If a Beneficiary dies prior to receiving all benefits available under the
      Optional Form of Payment, the remaining benefits shall be made to the
      person or persons named by the Beneficiary to receive the benefits payable
      under such Optional Form of Payment or to the Beneficiary's estate if no
      such person is named. If the Participant is not survived by a named
      Beneficiary, or if the Board is in doubt as to the effective status of a
      Beneficiary designation, then the Death Benefit provided by this Section
      3.1 shall be paid to the Participant's estate in one lump sum.

3.1   Designation of Beneficiary. The Participant shall have the right to
      designate a Beneficiary, including a contingent beneficiary, entitled to
      receive the benefits payable under Section 3.1 in the event of his death.
      Such designation shall be made in writing and delivered to the Board. The
      Participant may change such designation from time to time and may revoke
      such designation.

3.3   Death of Participant After Retirement or Termination of Employment. Upon
      the death of the Participant after retirement or other termination of
      employment, no benefits will be payable to the Participant's Beneficiary
      or any other person so designated by the Participant unless the Automatic
      Pension or Optional Form of Payment in effect or elected under Section 2.3
      or 2.4 of this Plan provides a death benefit.


                                        4


                                   ARTICLE IV

                               DISABILITY BENEFITS

4.1   Disability Benefits. If the Participant is unable to continue in the
      employ of the Employer by reason of Disability, the Participant shall be
      entitled to receive a Disability Benefit, in lieu of all other benefits
      under the Plan, commencing on the first day of the month next following
      such determination of Disability, payable in monthly installments, in an
      amount equal to the amount elected in A10 of the Adoption Agreement.
      Distribution may be in any form provided in A11 of the Adoption Agreement.

4.2   Return to Work. In the event the Participant returns to work after
      receiving Disability Benefits, Disability Benefits shall cease and the
      Participant shall continue in this Plan as though such disability had not
      occurred. Accrued benefits payable under the Plan thereafter shall be
      determined on the basis of the Participant's total Years of Service and
      shall be adjusted to take into account the Actuarial Equivalent of the
      Disability Benefits, if any, previously paid to the Participant.


                                        5


                                    ARTICLE V

                                     FUNDING

5.1   Investment. All payments of amounts under the Plan shall be paid from the
      general funds of the Employer and no special or separate fund shall
      necessarily be established and no other segregation of assets shall
      necessarily be made to assure the payment of such amounts. Neither
      Participants nor their beneficiaries or estates shall have any right,
      title, or interest whatever in or to any investments, including any
      "Applicable Policy", which the Employer may make to aid it in meeting its
      obligation hereunder. To the extent that any person acquires any right to
      receive payments from the Employer under the Plan, such right shall be no
      greater than the right of an unsecured general creditor of the Employer.
      Notwithstanding the foregoing, nothing in the Plan document shall preclude
      the Employer from contributing to or making Plan payments from a Rabbi
      Trust, as elected in the Adoption Agreement.


                                        6


                                   ARTICLE VI

                                  MISCELLANEOUS

6.1   Alienability. The right of a Participant to receive any amount credited to
      the Participant under the Plan shall not be transferable or assignable by
      the Participant. No person shall be entitled to anticipate any payment by
      assignment, alienation, sale, pledge, encumbrance or transfer in any form
      or manner prior to actual or constructive receipt thereof.

6.2   Amendment by Employer. The Employer may amend the Adoption Agreement by
      selecting any of its elective provisions. The amendment may not reduce the
      Accrued Benefit as elected in A8 of the Adoption Agreement. Any such
      amendment shall be delivered to the Participants and Beneficiaries and to
      the Plan Administrator.

6.3   Expenses. The Employer will pay all Expenses of the Plan.

6.4   Limitation. The establishment of this Plan, or the payment of benefits,
      shall not give any Participant or Employee any legal or equitable right
      against the Employer. This Plan shall not give any Participant or Employee
      the right to be retained in the service of the Employer.

      This Plan shall be governed by, and shall be construed and interpreted in
      accordance with, applicable federal law and with the laws of the
      Commonwealth of Massachusetts.

      The Accrued Benefit of any individual under the Plan shall be reduced by
      the amount, if any, by which the cash value or the death proceeds under
      any Applicable Policy maintained by the Employer with respect to such
      individual's benefits is reduced as a result of any misstatement or other
      action or omission by the Participant to which such Applicable Policy
      relates or by any such other individual.

      In the event that any one or more of the provisions of this Plan shall be
      held to be invalid, illegal or unenforceable, the validity, legality and
      enforceability of the remaining provisions shall not in any way be
      affected or impaired thereby and the invalidated provision shall be
      automatically amended to the extent necessary to make it valid consistent
      with the intent of the Employer hereunder.

6.5   Change of Control. A Participant shall be immediately vested in the total
      amount credited to his Accrued Benefit in the event of a change of control
      of the Employer, and such amount will be immediately distributable to the
      Participant. A change of control for this purpose shall be deemed to occur
      upon the purchase or other acquisition by any person, entity, or group of
      persons, within the meaning of section 13(d) or 14(d) of the Securities
      Exchange Act of 1934 ("Act"), or any comparable successor provisions, of
      beneficial ownership (within the meaning of Rule 13d-3 promulgated under
      the Act) of 50 percent or more of either the outstanding shares of common
      stock or the combined voting power of the Employer's then outstanding
      voting securities entitled to vote generally, or the approval by the
      stockholders of the Employer of a reorganization, merger, or
      consolidation, in each case, with respect to which persons who were
      stockholders of the Employer immediately prior to such reorganization,
      merger, or consolidation, do not immediately thereafter, own more than 50
      percent of the combined voting power entitled to vote generally in the
      election of directors of the reorganized, merged, or consolidated
      Employer's then outstanding securities, or a liquidation or dissolution of
      the Employer of the sale


                                        7


      of all or substantially all of the Employer's assets.

6.6   Violation of Agreement. In the event that the Participant violates any of
      the terms of this Plan, the Employer, in addition to any other rights
      which it may have, shall be relieved of the liability to make any further
      payments under the Plan to, or on behalf of, the Participant and shall
      have the right to specifically enforce this Plan by proceedings in equity.

6.7   For Cause Clause. As elected in Section A13(a) of the Adoption Agreement,
      all of a Participant's benefits under this Plan will be forfeited if the
      Participant's employment is terminated for cause. The Corporation shall
      have "cause" to terminate the Participant's employment hereunder because
      of the Participant's personal dishonesty, incompetence, willful
      misconduct, breach of fiduciary duty involving personal profit,
      intentional failure to perform stated duties, willful violation of any
      law, rule or regulation involving moral turpitude or final cease and
      desist order, or material breach of any provision of this Agreement. For
      purposes of this Section, no act or failure to act on the Participant's
      part will be considered "willful" unless done, or admitted to be done, by
      him in bad faith and without reasonable belief that his action or omission
      was in the best interests of the Employer; provided that any act or
      omission to act by the Participant in reliance upon an opinion of counsel
      to the Employer shall not be deemed to be willful. Notwithstanding the
      foregoing, the Participant shall not be deemed to have been terminated for
      cause unless and until there shall have been delivered to him a copy of a
      certification by the Clerk of the Corporation that three-fourths (3/4) of
      the entire Board of Directors of the Employer found in good faith that the
      Participant was guilty of conduct which is deemed to be Cause as defined
      above and specifying the particulars thereof, after reasonable notice to
      the Participant and an opportunity for him together with his counsel, to
      be heard before such majority.

6.8   Non-Compete Clause. If the Non-Compete Clause is elected in Section A
      13(b) of the Adoption Agreement, the Participant must not violate the
      terms of this Section 6.8.

      After becoming a Participant in this Plan, and for the period after
      termination of employment with the Employer as elected in Section A13(b)
      of the Adoption Agreement, the Participant may not be an employee or
      consultant of, or hold any other position with, or directly or indirectly
      assist, any bank in connection with any banking activities by said bank in
      the same county where the Participant's Employer has a branch; nor will
      the Participant attempt to hire any employee of the Employer, assist in
      such hiring by any other person or entity, encourage any such employee to
      terminate his or her relationship with the Employer, or solicit or
      encourage any customer of the Employer to terminate its relationship with
      the Employer or to conduct with any other person or entity any business or
      activity which such customer conducts or could conduct with the Employer;
      provided, however, that nothing herein shall prohibit the Participant from
      owning up to 2% of the shares of common stock of any bank whose shares are
      publicly traded on a national securities exchange or in the
      over-the-counter market.


                                        8


                              MEDFORD SAVINGS BANK
                     SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                               ADOPTION AGREEMENT

The undersigned Employer adopts this Plan for the exclusive benefit of its
eligible employees and beneficiaries to provide retirement and pre-retirement
benefits.

The Plan shall operate in accordance with the Basic Plan Document and the
Adoption Agreement provisions as elected.

                                          Medford Savings Bank
PLAN NAME:                                Supplemental Executive Retirement Plan
                                          --------------------------------------
EMPLOYER NAME:                            Medford Savings Bank
                                          --------------------------------------
FEDERAL IDENTIFICATION NUMBER:            04-1609330
                                          --------------------------------------
PLAN ADMINISTRATOR:                       Phillip W. Wong, S.V.P.
                                          --------------------------------------

A1.   EFFECTIVE DATE OF PLAN:             11-01-94
                                          --------------

A2.   PLAN YEAR:

             a) The Plan Year is the calendar year.
      ------
         x   b) The Plan Year is a 12 month period beginning on    11-01     .
      ------                                                    -------------

A3.   COMPENSATION AND AVERAGE COMPENSATION:

      a)  COMPENSATION
        x    1)  Reported W-2 earnings.
      ------
             2)  As defined in IRC 415(c)(3).
      ------     (elect 1) or 2))

             3)  Compensation as defined in 1) or 2) shall exclude bonuses.
      ------

             4)  Including ____ not including ____ amounts contributed pursuant
      ------     to a Salary Reduction Agreement and which is not included in
                 the participant's gross income under IRC 125, 402(a)(8),
                 402(H) or 403(b).

                 Compensation as elected means Compensation which is actually
                 paid to a Participant during the Plan Year and earned from the
                 Participant's Entry Date.

b)    AVERAGE COMPENSATION is _______________________________________________
      (If left blank, the definition of Average Compensation in Plan Section 1.2
      shall apply.)


A4.   DATES:

      a)    NORMAL RETIREMENT AGE IS   65  .
                                      -----
      b)    EARLY RETIREMENT AGE IS   62  .
                                     -----


                                       AA1


A5.   ELIGIBILITY

             a)   Class of employees (i.e., Exec. V.P. and above/employees
      -----       earning over $150,000 or IRC 401(a)(17)).  (please define)

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

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

        x    b)   Individuals by name. (please define)
      -----
                  Arthur H. Meehan
                  ---------------------------------------------------------

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

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

             c)   Other, (please define)
      -----
                  ---------------------------------------------------------

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

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

A6.   YEARS OF SERVICE

        x    a)   Same as SBERA Pension Plan.
      -----
             b)   Same as SBERA Defined Contribution Plan.
      -----
             c)   Other
      -----
                  ---------------------------------------------------------

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

A7.   VESTING

      a) Minimum Age of    60   .
                        --------
      b)  Minimum years of service of    3   .
                                      -------

A8.   BENEFITS (select all applicable formulas)

        x    a)   Make up benefits which will be lost under defined benefit
      -----       plans due to the reduction in the IRC 401(a)(17) compensation
                  ceiling to $150,000 effective 11/1/94. (The amount lost will
                  be computed by applying the IRC 401(a)(17) cost of living
                  adjustment as a percentage, compounded each year, to the IRC
                  401(a)(17) limit effective 12/31/93).

             b)   Make up benefits lost under defined benefit plans due to all
      -----       IRC 401(a)(17) compensation ceilings. (Includes compensation
                  in excess of $200,000 for plan years beginning in 1989 and in
                  excess of $150,000 for plan years beginning in 1994; i.e.
                  there is no limit on the compensation used.)

             c)   Make up all benefits which will be lost under defined
      -----       contribution plans due to the reduction in the IRC 401(a)(17)
                  compensation ceiling to $150,000 effective 1/1/94. (The amount
                  lost will be computed by applying the IRC 401(a)(17) cost of
                  living adjustment as a percentage, compounded each year, to
                  the IRC 401(a)(17) limit effective 12/31/93.)


                                       AA2


             d)   Make up benefits lost under defined contribution plans due to
      -----       all IRC 401(a)(17) compensation ceilings. (Includes
                  compensation in excess of $200,000 for plan years beginning in
                  1989 and in excess of $150,000 for plan years beginning in
                  1994; i.e. there is no limit on the compensation used.)

             e)   Allow different benefit formulas (please define - for example,
      -----       Normal Retirement Benefit of ____% of Final Average
                  Compensation times Years of Service offset by Accrued Benefit
                  under the defined benefit plan and further offset by ____% of
                  the Participant's Social Security Benefit.)

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

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

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

A9.   DISTRIBUTION OPTIONS AT DEATH AND AT EARLY, NORMAL AND LATE RETIREMENT
      (select desired options)

             a)   Lump Sum
      -----
             b)   Annual Installments over ______ (specify options) years
      -----
             c)   Life Annuity
      -----
        x    d)   Joint and   100  % (specify options) Survivor Annuity
      -----

A10.  DISABILITY RETIREMENT BENEFIT

        x    a)   Accrued Benefit (unreduced for early commencement)
      -----
             b)   Actuarially Equivalent Accrued Benefit (reduced for early
      -----       commencement)
             c)   Accrued Benefit with payment deferred to _______________
      -----
             d)   None
      -----
             e)   Other
      -----
                  ---------------------------------------------------------

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

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

A11.  DISTRIBUTION OPTIONS AT DISABILITY RETIREMENT (select desired options)

             a)   Lump Sum
      -----
             b)   Annual Installments over ______ (specify options) years
      -----
             c)   Life Annuity
      -----
        x    d)   Joint and   100  % (specify option) Survivor Annuity
      -----
             e)   No Distribution
      -----

A12.  DISTRIBUTION OPTIONS DUE TO TERMINATION OF EMPLOYMENT, IF VESTED
      (select desired options)

             a)   Lump Sum
      -----
             b)   Annual Installments over ______ (specify options) years
      -----
             c)   Life Annuity
      -----
        x    d)   Joint and   100  % (specify option) Survivor Annuity
      -----


                                       AA3


A13.  FORFEITURE CLAUSE

        x    a)   For cause
      -----
             b)   Non-compete clause within the Commonwealth of Massachusetts
      -----       which shall be applicable for years after the Participant
                  terminates employment with the Employer.

A14.  CONTROLLING STATE LAW
      The laws of The Commonwealth of Massachusetts shall control this Plan.



                                                Employer:

                                                      Medford Savings Bank
                                                ------------------------------
                                                FID #  04-1609330
                                                      ------------------------
         January 1, 1995                        BY: /s/ William Rivers
- -------------------                                 --------------------------


                                       AA4


                SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN AGREEMENT

I hereby acknowledge that, as an Employee, I have been offered an opportunity to
participate in the Supplemental Executive Retirement Plan (the "Plan") providing
the Supplemental Benefits specified in Section A8 of the Adoption Agreement
(which Plan and Adoption Agreement are attached hereto and made a part hereof),
and that I hereby elect to participate in the Plan.

I further acknowledge that neither the Employer nor any of its subsidiaries,
affiliated companies, employees or agents has any responsibility or liability
whatsoever for any changes which I may make in personal plans or programs as a
result of my decision to participate in the Plan and I recognize that the
Employer has the right to terminate, amend or modify the Plan at any time.

I here designate as Primary Beneficiary under the Plan:

   Jeanne M. Meehan
- --------------------------------------------------------------------------------

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

I hereby designate as Secondary Beneficiary under the Plan:

   Arthur H. Meehan Family Trust
- --------------------------------------------------------------------------------

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

      I understand that Beneficiary means the Primary Beneficiary if the Primary
      Beneficiary survives me, and the Secondary Beneficiary if the Primary
      Beneficiary does not survive me and means my estate if neither the Primary
      Beneficiary nor the Secondary Beneficiary survives me. I reserve the right
      to change the Primary and/or Secondary Beneficiary from time to time in
      the manner as required by the Plan, and I agree that no change in
      Beneficiary shall be effective unless received by the Employer while I am
      living and until acknowledged in writing by the Employer.

Notices to me (Participant) shall be sent as follows:

      Name    Arthur H. Meehan
           ---------------------------------------------------------------------

      Street Address or
      Post Office Box No.     5 Fox Run Road
                          ------------------------------------------------------

      City and State          Dover, MA                      Zip Code  02030
                     ---------------------------------------          ------


                                        1


IN WITNESS WHEREOF, the Employer and I have executed this acceptance as of the
1st day of January , 1995.


                                          EMPLOYEE:


                                          /s/ Arthur H. Meehan
                                          -----------------------------
                                                  (Signature)


                                              Arthur H. Meehan
                                          -----------------------------
                                          (Type or Print Name Under Signature)


ACCEPTED



          Medford Savings Bank
     -------------------------------
By:       /s/ William Rivers
     -------------------------------
            Authorized Signature


                                        2