Exhibit 10.13

                     EXECUTIVE SUPPLEMENTAL RETIREMENT PLAN

                                    AGREEMENT

         This Agreement, made and entered into this_______ day of ___________,
2001, by and between Park West Bank and Trust Company, a bank organized and
existing under the laws of the Commonwealth of Massachusetts, hereinafter
referred to as "the Bank", and ______________, a key employee and an executive
officer of the Bank, hereinafter referred to as "the Executive".

         WHEREAS, the Executive has been in the employ of the Bank for several
years and has now and for years past faithfully served the Bank. It is the
consensus of the Board of Directors of the Bank (the Board) that the Executive's
services have been of exceptional merit, in excess of the compensation paid and
an invaluable contribution to the profits and position of the Bank in its field
of activity.

         ACCORDINGLY, it is the desire of the Bank and the Executive to enter
into this Agreement under which the Bank will agree to make certain payments to
the Executive upon the Executive's retirement and, alternatively, to the
Executive's beneficiary(ies) in the event of the Executive's death.

         FURTHERMORE, it is the intent of the parties hereto that this Agreement
be considered an arrangement maintained primarily to provide supplemental
retirement benefits for the Executive, as a member of a select group of
management or highly compensated employees of the Bank for purposes of the
Employee Retirement Security Act of 1974 (ERISA). The Executive is fully advised
of the Bank's financial status.

         THEREFORE, in consideration of the Executive's services performed in
the past and those to be performed in the future and based upon the mutual
promises and covenants herein contained, the Bank and the Executive, agree as
follows:

<PAGE>

1.       DEFINITIONS

         A.       Effective Date:
                  --------------

                  The Effective Date of this Agreement shall be _______,_______.

         B.       Plan Year:
                  ---------

                  Any reference to "Plan Year" shall mean a calendar year from
                  January 1 to December 31. In the year of implementation, the
                  term "Plan Year" shall mean the period from the effective date
                  to December 31 of the year of the effective date.

         C.       Retirement:
                  ----------

                  Retirement shall mean retirement from service with the Bank
                  which becomes effective when the Executive reaches the
                  Executive's sixty-fifth (65th) birthday or such later date as
                  the Executive may actually retire.

         D.       Termination of Service:
                  ----------------------

                  Termination of Service shall mean voluntary resignation of
                  service by the Executive or the Bank's discharge of the
                  Executive without cause ("cause" defined in Subparagraph III
                  (D) hereinafter), prior to the Normal Retirement Age
                  (described in Subparagraph I (F) hereinafter).

         E.       Change of Control:
                  -----------------

                  For purposes of this Agreement, Change in Control shall mean
                  and include the following with respect to the Bank or any
                  successor thereto:

                           (1)      The acquisition of "control" (within the
                                    meaning of Section 2(a)(2) of the Bank
                                    Holding Company Act of 1956, as amended, or
                                    of Section 602 of the Change in Bank Control
                                    Act of 1978) of Westbank Corporation by any
                                    person, company or other entity, or of the
                                    Bank by any person, company or entity other
                                    than Westbank Corporation;

                           (2)      Any "person" (as such term is used in
                                    Sections 13(d) and 14(d)(2) of the
                                    Securities Exchange Act of 1934) is or
                                    becomes the "beneficial owner" (as defined
                                    in Rule 13d-3 thereunder), directly or
                                    indirectly, of securities of Westbank
                                    Corporation representing 20% or more of the
                                    combined voting power of Westbank
                                    Corporation's then-outstanding securities;

                           (3)      Any such person becomes the beneficial
                                    owner, directly or indirectly, of securities
                                    of Westbank Corporation representing less
                                    than 20% of Westbank Corporation's
                                    then-outstanding securities, but is
                                    determined by a court or regulatory agency
                                    with jurisdiction over the matter to possess
                                    or to have exercised control over Westbank
                                    Corporation; or

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<PAGE>

                           (4)      During any period of two consecutive years,
                                    individuals who at the beginning of such
                                    period constitute the Board of Directors of
                                    Westbank Corporation cease for any reason to
                                    constitute at least a majority thereof
                                    unless the election or the nomination for
                                    election by Westbank Corporation's
                                    stockholders of each new director was
                                    approved by a vote of at least three-fourths
                                    of the directors of Westbank Corporation
                                    then still in office who were directors at
                                    the beginning of the period.

                           (5)      Any event which would be described in
                                    Subparagraph I (E)(1), (2), (3), or (4) if
                                    the term "Bank" were substituted for the
                                    term "Westbank Corporation" herein.

         F.       Normal Retirement Age:
                  ---------------------

                  Normal Retirement Age shall mean the date on which the
                  Executive attains age sixty-five (65).

         G.       Benefit Accounting:
                  ------------------

                  The Bank shall account for the benefit provided herein using
                  the regulatory accounting principles of the Bank's primary
                  federal regulator. The Bank shall establish an accrued
                  liability retirement account for the Executive into which
                  appropriate reserves shall be accrued.

         H.       Single Life Annuitized Value:
                  ----------------------------

                  Single Life Annuitized Value means the annual benefit, payable
                  in the form of a single life annuity, that is actuarially
                  equivalent in value to a specified lump sum amount where
                  actuarial equivalence is determined on the basis of the
                  mortality table prescribed by the Internal Revenue Service for
                  purposes of section 417(e)(3) of the Internal Revenue Code of
                  1986 at the time of the determination and an interest rate
                  equal to the bond-equivalent yield on Treasury Securities with
                  a Constant Maturity of 30 years, as published by the Board of
                  Governors of the Federal Reserve System in its H-15 Release
                  for the most recent calendar month to end at least ninety (90)
                  days prior to the date of determination. If such mortality
                  table and/or interest rate assumption are not available at the
                  time of the determination, then the Bank shall in good faith
                  select another mortality table that purports to reflect
                  current mortality trends and/or another interest rate that
                  purports to reflect prevailing market rates for fixed income
                  securities with a term to maturity of thirty years that
                  present little or no credit risk.

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<PAGE>

         I.       Final Compensation:
                  ------------------

                  Final Compensation means as of any date the Executive's annual
                  base salary actually paid during the period of twelve (12)
                  consecutive calendar months in which the Executive's base
                  salary was at the highest annual rate achieved during or prior
                  to such date.

         J.       Social Security Benefit:
                  -----------------------

                  Social Security Benefit means the Executive's primary old-age
                  insurance benefit payable to the Executive beginning at the
                  age at which such benefit may be paid without reduction for
                  early payment or increase for late payment. If it shall be
                  necessary to determine the Executive's Social Security Benefit
                  before the Executive has attained the age at which such
                  benefit may be paid without reduction, the Executive's Social
                  Security Benefit shall be deemed to be equal to the highest
                  primary old-age insurance benefit payable to any person who
                  reaches the age at which such benefit may be paid on an
                  unreduced basis in the year in which the determination is
                  being made.

II.      EMPLOYMENT

         The Bank agrees to employ the Executive in such capacity as the Bank
         may from time to time determine. The Executive will continue in the
         employ of the Bank in such capacity and with such duties and
         responsibilities as may be assigned to him, and with such compensation
         as may be determined from time to time by the Board of Directors of the
         Bank.

         No provision of this Agreement shall be deemed to restrict or limit any
         existing employment agreement by and between the Bank and the
         Executive, nor shall any conditions herein create specific employment
         rights to the Executive nor limit the right of the Employer to
         discharge the Executive with or without cause. In a similar fashion, no
         provision shall limit the Executive's rights to voluntarily sever his
         employment at any time.

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<PAGE>

III.     BENEFITS

         A.       Retirement Benefits:
                  -------------------

                  Should the Executive continue to be employed by the Bank until
                  "Normal Retirement Age" defined in Subparagraph I (F), the
                  Executive shall be entitled to receive the benefits set forth
                  in this Subparagraph III (A).

                  An annual benefit equal to 75% of Final Compensation at
                  retirement, less 50% of the Social Security Benefit and the
                  Single Life Annuitized Value of the Executive's account
                  balances derived from employer provided contributions under
                  all qualified and non-qualified defined contribution plans
                  maintained by the Bank. The payment of this annual benefit
                  shall commence within thirty (30) days of the Executive's
                  retirement.

         B.       Termination of Service:
                  ----------------------

                  Subject to Subparagraph III (D), should the Executive suffer a
                  Termination of Service [Subparagraph I (D)], the Executive
                  shall be entitled to receive the benefits set forth in this
                  Subparagraph III (B).

                  A benefit equal to the amount of the accrued liability
                  retirement account maintained pursuant to Subparagraph I(G) at
                  said Termination of Service to be paid within thirty (30) days
                  of the Termination of Service.

         C.       Death:
                  -----

                  Upon the death of the Executive, the Executive shall be
                  entitled to receive the benefits set forth in this
                  Subparagraph III(C).

                  A benefit equal to the amount of the accrued liability
                  retirement account maintained pursuant to Subparagraph I(G)
                  existing on the date of the Executive's death to be paid
                  within thirty (30) days of the date of the Executive's death.

         D.       Discharge for Cause:
                  -------------------

                  Should the Executive be discharged for cause at any time, all
                  benefits under this Agreement shall be forfeited. The term
                  "for cause" shall mean the conviction of a felony that results
                  in any adverse effect on the Bank. If a dispute arises as to
                  discharge "for cause", such dispute shall be resolved by
                  arbitration as set forth in this Agreement.

         E.       Death Benefit:
                  -------------

                  Except as set forth above, there is no death benefit provided
                  under this Agreement.

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<PAGE>

IV.      RESTRICTIONS UPON FUNDING

         The Bank shall have no obligation to set aside, earmark or entrust any
         fund or money with which to pay its obligations under this Agreement.
         The Executive, the Executive's beneficiary(ies) or any successor in
         interest to the Executive shall have the status of a general unsecured
         creditor of the Bank in the same manner as any other unsecured creditor
         having a general claim against the Bank. This Agreement constitutes a
         mere promise by the Bank to make benefit payments in the future as
         described in this Agreement.

         The Bank reserves the absolute right, at its sole discretion, to either
         fund the obligations undertaken by this Agreement or to refrain from
         funding the same and to determine the exact nature and method of such
         funding. Should the Bank elect to fund this Agreement, in whole or in
         part, through the purchase of life insurance, mutual funds, disability
         policies or annuities, the Bank reserves the absolute right, in its
         sole discretion, to terminate such funding at any time, in whole or in
         part unless the Bank and the Executive agree otherwise in a separate
         written instrument. At no time shall the Executive be deemed to have
         any lien or right, title or interest in or to any specific funding
         investment or to any assets of the Bank.

         It is the intention of the parties to this Agreement that the
         arrangements under this Agreement be unfunded for tax purposes and for
         purposes of Title I of ERISA.

V.       CHANGE OF CONTROL

Upon the Executive's Termination of Service after a Change of Control (as
defined in Subparagraph I (E) herein), the Executive shall be entitled to
receive one hundred percent (100%) of the benefits set forth in Subparagraph III
(B) of this Agreement to be paid, at the option of the Executive, said option to
be exercised at least one (1) year prior to said Change of Control, either: (i)
in a lump sum paid within thirty (30) days following the Executive's Termination
of Service [Subparagraph I (D)] subsequent to said Change of Control or (ii) in
monthly installments beginning within thirty (30) days following the Executive's
Termination of Service. If no election is made the benefit will be payable
pursuant to clause (i) of the previous sentence. The Executive will also remain
eligible for all promised death benefits in this Agreement. An Executive who
continues employment with the Bank, or any successor thereto, after a Change of
Control will continue to accrue benefits pursuant to this Agreement until his
Termination of Service or Retirement from the Bank or any successor thereto.
Upon a Change of Control this Agreement shall be irrevocable during the lifetime
of the Executive and shall be binding upon the Bank and any successor thereto.
This Agreement may only be modified by the mutual written assent of the
Executive and the Bank or any successor thereto.

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<PAGE>

VI.      MISCELLANEOUS

         A.       Alienability and Assignment Prohibition:
                  ---------------------------------------

                  Neither the Executive, his/her surviving spouse nor any other
                  beneficiary under this Agreement shall have any power or right
                  to transfer, assign, anticipate, hypothecate, mortgage,
                  commute, modify or otherwise encumber in advance any of the
                  benefits payable hereunder nor shall any of said benefits be
                  subject to seizure for the payment of any debts, judgments,
                  alimony or separate maintenance owed by the Executive or the
                  Executive's beneficiary(ies), nor be transferable by operation
                  of law in the event of bankruptcy, insolvency or otherwise. In
                  the event the Executive or any beneficiary attempts
                  assignment, commutation, hypothecation, transfer or disposal
                  of the benefits hereunder, the Bank's liabilities shall
                  forthwith cease and terminate.

         B.       Binding Obligation of Bank and Any Successor in Interest:
                  --------------------------------------------------------

                  This Agreement shall be binding upon the parties hereto, their
                  successors, beneficiary(ies), heirs and personal
                  representatives.

         C.       Revocation:
                  ----------

                  It is agreed by and between the parties hereto that, during
                  the lifetime of the Executive, this Agreement may be amended
                  or revoked at any time or times, in whole or in part, by the
                  mutual written assent of the Executive and the Bank.

         D.       Gender:
                  ------

                  Whenever in this Agreement words are used in the masculine or
                  neuter gender, they shall be read and construed as in the
                  masculine, feminine or neuter gender, whenever they should so
                  apply.

         E.       Effect on Other Bank Benefit Plans:
                  ----------------------------------

                  Nothing contained in this Agreement shall affect the right of
                  the Executive to participate in or be covered by any qualified
                  or non-qualified pension, profit-sharing, group, bonus or
                  other supplemental compensation or fringe benefit plan
                  constituting a part of the Bank's existing or future
                  compensation structure. If, after the date of this Agreement,
                  the Bank adopts or implements any tax-qualified or
                  non-qualified defined contribution or defined benefit plan
                  that provides retirement benefits for the Executive in
                  addition to or in substitution for the plans in effect on the
                  date of this Agreement, the benefits provided by such new plan
                  or plans shall be applied to offset the benefits payable under
                  this Agreement in such manner as the Bank shall determine to
                  be comparable to the offsets provided for plans in effect on
                  the date hereof unless the Bank and the Executive expressly
                  agree otherwise in writing.

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<PAGE>

         F.       Headings:
                  --------

                  Headings and subheadings in this Agreement are inserted for
                  reference and convenience only and shall not be deemed a part
                  of this Agreement.

         G.       Applicable Law:
                  --------------

                  The validity and interpretation of this Agreement shall be
                  governed by the internal laws of the Commonwealth of
                  Massachusetts applicable to contracts to be performed wholly
                  within the Commonwealth of Massachusetts among parties all of
                  whom are citizens and residents of the Commonwealth of
                  Massachusetts.

         H.       Fringe Benefits:
                  ---------------

                  The benefits provided by this Agreement are granted by the
                  Bank as a fringe benefit to the Executive and are not part of
                  any salary reduction plan or an arrangement deferring a bonus
                  or a salary increase, and shall in no event be construed to
                  effect nor limit the Executive's current or prospective salary
                  increases, cash bonuses, or profit-sharing distribution or
                  credits. The Executive has no option to take any current
                  payment or bonus in lieu of these benefits except as may be
                  set forth hereinafter.

VII.     ERISA PROVISION

         A.       Named Fiduciary and Plan Administrator:
                  --------------------------------------

                  The "Named Fiduciary and Plan Administrator" of this Executive
                  Plan shall be Park West Bank and Trust Company until its
                  resignation or removal by the Board. As Named Fiduciary and
                  Plan Administrator, the Bank shall be responsible for the
                  management, control and administration of the Executive Plan.
                  The Named Fiduciary may delegate to others certain aspects of
                  the management and operation responsibilities of the Executive
                  Plan including the employment of advisors and the delegation
                  of ministerial duties to qualified individuals.

         B.       Claims Procedure and Arbitration:
                  --------------------------------

                  In the event a dispute arises over benefits under this
                  Agreement and benefits are not paid to the Executive (or to
                  his beneficiary in the case of the Executive's death) and such
                  claimants feel they are entitled to receive such benefits,
                  then a written claim must be made to the Plan Administrator
                  named above within ninety (90) days from the date payments are
                  refused. The Plan Administrator shall review the written claim
                  and if the claim is denied, in whole or in part, they shall
                  provide in writing within ninety (90) days of receipt of such
                  claim their specific reasons for such denial, reference to the
                  provisions of this Agreement upon which the denial is based
                  and any additional material or information necessary to
                  perfect the claim. Such written notice shall further indicate
                  the additional steps to be taken by claimants if a further
                  review of the claim denial is desired. A claim shall be deemed
                  denied if the Plan Administrator fails to take any action
                  within the aforesaid ninety-day period.

                                        8
<PAGE>

                  If claimants desire a second review they shall notify the Plan
                  Administrator in writing within ninety (90) days of the first
                  claim denial. Claimants may review this Agreement or any
                  documents relating thereto and submit any written issues and
                  comments they may feel appropriate. In its sole discretion,
                  the Plan Administrator shall then review the second claim and
                  provide a written decision within ninety (90) days of receipt
                  of such claim. This decision shall likewise state the specific
                  reasons for the decision and shall include reference to
                  specific provisions of this Agreement upon which the decision
                  is based.

                  If claimants continue to dispute the benefit denial based upon
                  completed performance of this Agreement or the meaning and
                  effect of the terms and conditions thereof, then claimants may
                  submit the dispute to a Board of Arbitration for final
                  arbitration. Said Board shall consist of one member selected
                  by the claimant, one member selected by the Bank, and the
                  third member selected by the first two members. The Board
                  shall operate under any generally recognized set of
                  arbitration rules. The parties hereto agree that they and
                  their heirs, personal representatives, successors and assigns
                  shall be bound by the decision of such Board with respect to
                  any controversy properly submitted to it for determination.

                  Where a dispute arises as to the Bank's discharge of the
                  Executive "for cause", such dispute shall likewise be
                  submitted to arbitration as above described and the parties
                  hereto agree to be bound by the decision thereunder.

                                        9
<PAGE>

         IN WITNESS WHEREOF, the parties hereto acknowledge that each has
carefully read this Agreement and executed the original thereof on the first day
set forth hereinabove and that, upon execution, each has received a conforming
copy.


                                               PARK WEST BANK AND TRUST COMPANY
                                               West Springfield, MA

                                               By:
------------------------------                     -----------------------------
Witness                                            (Title)


------------------------------                     -----------------------------
Witness                                             Executive

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