Exhibit 10.2

                     SUPPLEMENTAL RETIREMENT PLAN AGREEMENT

      This sets forth an amendment and restatement of the Supplemental
Retirement Plan Agreement made effective as of April 1, 2002 between (i)
COMMUNITY BANK SYSTEM, INC., a Delaware corporation and registered bank holding
company, and COMMUNITY BANK, N.A., a national banking association, both having
offices located in Dewitt, New York (collectively, the "Employer"), and (ii)
SANFORD A. BELDEN, an individual currently residing at 9 Lynacres Boulevard,
Fayetteville, New York ("Employee"). This amended and restated Agreement
supersedes the April 1, 2002 version of this Agreement, and is entered into
pursuant to paragraph 4(d) of the Employment Agreement between the parties,
effective as of March 1, 2004 and as amended ("Employment Agreement"). This
amended and restated Agreement is effective as of March 1, 2004.

                                   WITNESSETH

            IN CONSIDERATION of the promises and mutual agreements and covenants
contained herein, and other good and valuable consideration, the parties agree
as follows:

      1. Supplemental Retirement Benefit.

            (a) Employer shall pay Employee an annual supplemental retirement
benefit equal to the product of (i) 5% times Employee's number of years of
service, considering only the Employee's first 10 years of service, plus 2%
times Employee's number of years of service in excess of ten years, times (ii)
Employee's final average compensation, with the product of (i) times (ii)
reduced by Employee's other retirement benefits. Notwithstanding the foregoing,

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except in the event of Employee's voluntary termination of employment prior to
July 1, 2006, the product of (i) times (ii) above shall not be less than the
product that would be derived if Employee remained employed pursuant to the
Employment Agreement through December 31, 2007 and received the Base Salary
(including increases) and Management Incentive Plan payments (assuming a minimum
50 percent incentive payment under Employer's Management Incentive Plan)
described in the Employment Agreement.

            (b) For purposes of this paragraph 1, and subject to paragraph 2,
"years of service" shall be credited to Employee in the same manner as years of
service are credited to Employee under the Community Bank System, Inc. Pension
Plan, as amended through December 31, 2001 ("Pension Plan"); and no more than 15
years of service will be taken into account under paragraphs 1 and 2.

            (c) For purposes of this paragraph 1, and except as provided in the
last sentence of paragraph 1(a) and in paragraph 2(a)(iii), Employee's "final
average compensation" shall be the annual average of Employee's Base Salary (as
defined in the Employment Agreement) and cash incentive payment awarded during
the five consecutive calendar years preceding Employee's termination.

            (d) For purposes of this paragraph 1, Employee's "other retirement
benefits" shall mean the sum of

                  (i) the annual benefit payable to Employee from the Pension
Plan, plus

                  (ii) 50 percent of the estimated annual benefit payable to
Employee pursuant to the Federal Social Security Act, plus


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<PAGE>

                  (iii) the annual benefit that could be provided by Employer
contributions (other than elective deferrals) made on Employee's behalf under
(A) the Community Bank System, Inc. 401(k) Employee Stock Ownership Plan, and
(B) the Deferred Compensation Plan for Certain Executive Employees of Community
Bank System, Inc., plus earnings on contributions under (A) and (B) at an
assumed rate of 8% per year, if such contributions and earnings were converted
to a benefit payable at the same time and in the same form as the benefit paid
under this paragraph 1, using the factors applied to determine actuarial
equivalents under the Pension Plan at the time payments begin under this
paragraph 1.

            (e) For purposes of paragraph 1, Employee's Social Security Benefit
("Benefit") will be valued by the actual Benefit Employee receives or is
qualified to receive at the time Employee elects to receive the supplemental
retirement benefit, or if Employee has not yet qualified for the Benefit, the
Benefit will be valued by the maximum benefit available to a then 62 year old
individual.

            (f) For the purposes of paragraph 1, Employee's Pension Plan Benefit
will be Employee's accrued benefit under the Plan, determined as of the date
Employee elects to receive the supplemental retirement plan benefit, adjusted
for the timing and form of benefit.

            (g) The supplemental retirement benefit described in paragraph 1
shall be payable commencing on the first day of the month following the later of
(i) Employee's receipt of all payments due under the terms of his Employment
Agreement, or (ii) termination of employment as an employee of Employer.


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<PAGE>

            (h) The supplemental retirement benefit described in this paragraph
1 shall be paid in the form of an actuarially reduced Joint and 100% Survivor
benefit with Employee's spouse as survivor annuitant; provided, however, that:

                  (i) If Employee simultaneously commences receipt of Employee's
Pension Plan benefit, then the benefit under this paragraph 1 shall be paid in
the same form as Employee's Pension Plan benefit;

                  (ii) If Employee shall receive payment of Employee's benefit
under the Pension Plan in a form other than a single life annuity for Employee's
life, then the supplement retirement benefit under this paragraph 1 shall be
converted to the same form of payment, using the factors applied to determine
actuarial equivalents under the Pension Plan at the time payments begin; and

                  (iii) If Employee or his beneficiaries shall receive payment
of Employee's benefit under the Pension Plan prior to Employee's attainment of
age 62, then the supplement retirement benefit under this paragraph 1 shall be
subject to the same early retirement reduction, using the factors applied to
determine early retirement benefits under the Pension Plan at the time payments
begin.

      Notwithstanding the foregoing, if Employee dies prior to commencing
receipt of payments under this paragraph 1, Employee's surviving spouse shall
receive an actuarially reduced 100% survivor benefit determined as if Employee
retired on the day prior to his death and immediately commenced receipt of
payments under both this paragraph 1 (including any adjustment required by the
last sentence of paragraph 1(a)) and the Pension Plan in the form of an
actuarially reduced Joint and 100% Survivor benefit with his spouse as survivor
annuitant. If


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<PAGE>

Employee has no spouse at the time of Employee's death, no survivor benefits
shall be paid pursuant to this paragraph 1.

            (i) Employer shall establish a "grantor trust" (as that term is
defined in Internal Revenue Code Section 671) to aid it in the accumulation and
payment of the supplemental retirement benefit described in this paragraph 1;
provided that the trust shall be established with the intention that the
creation and funding of the trust shall not result in the recognition of gross
income by Employee of any amount credited under the trust prior to the date the
amount is paid or made available. Assets of the trust, and any other assets set
aside by Employer to satisfy its obligations under this Agreement, shall remain
at all times subject to the claims of Employer's general creditors. Employee and
his beneficiaries shall not have any rights under this paragraph 1 that are
senior to the claims of general unsecured creditors of Employer. Notwithstanding
any other term or provision of this Agreement or the trust, within ten business
days following Employee's termination of employment with Employer due to
Employee's retirement (including Employee's voluntary early retirement),
disability or death, or, if earlier, immediately prior to the effective date of
a "Change of Control" (as defined in the Employment Agreement), Employer shall
fully fund the trust (using the same actuarial assumptions used to establish
funding in the Pension Plan) for all benefits earned pursuant to this Agreement
through the date of Employee's termination of employment or the effective date
of the Change of Control, as applicable.

            (j) The right to receive the supplemental retirement benefit
described in this paragraph 1 shall not be subject in any manner to
anticipation, alienation, sale, transfer, assignment, pledge or encumbrance, nor
subject to attachment, garnishment, levy, execution or


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<PAGE>

other legal or equitable process for the debts, contracts or liabilities of
Employee or his beneficiaries.

      2. Change of Control

            (a) If Employee's employment with Employer shall cease for any
reason, including Employee's voluntary termination for "good reason," but not
including Employee's termination for "cause" or Employee's voluntary termination
without "good reason," within 2 years following a "Change of Control", (as those
quoted terms are defined in the Employment Agreement), Employer shall:

                  (i) Credit Employee under this Agreement with the greater of 3
years of service or the years of service Employee is retained as a consultant
under the terms of paragraph 6 of the Employment Agreement for purposes of
determining Employee's supplemental retirement benefit described in paragraph 1;
and

                  (ii) Credit Employee under this Agreement with two additional
years of service for purposes of determining Employee's supplemental retirement
benefit described in paragraph 1; and

                  (iii) Determine Employee's "final average compensation" under
paragraph 1(c) by considering the years of service Employee is retained as a
consultant under the terms of the Employment Agreement as service that precedes
Employee's termination and considering amounts paid to Employee during that
period as Base Salary and cash incentive payments to Employee.

            (b) Subject to paragraph 2(c) below, if any portion of the amounts
paid to, or value received by, Employee following a "Change of Control"
constitutes an "excess parachute


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<PAGE>

payment" within the meaning of Internal Revenue Code Section 280G, then the
parties shall negotiate a restructuring of payment dates and/or methods (but not
payment amounts) to minimize or eliminate the application of Internal Revenue
Code Section 280G. If an agreement to restructure payments cannot be reached
within 60 days of the date the first payment is due under this Agreement, then
payments shall be made without restructuring. The amount of any payment shall be
increased to the extent necessary to hold Employee harmless from all income and
excise tax liability attributable to such payment.

            (c) Notwithstanding the foregoing of this paragraph 2, if the Board
of Directors of Employer elects to make a single lump sum payment to Employee
pursuant to paragraph 6(a)(vi) of the Employment Agreement, Employer shall pay
all benefits due Employee pursuant to this Agreement in an actuarial equivalent
single lump sum payment within 90 days following a Change of Control and
Employee's termination of employment with Employer. In the event a single lump
sum payment is made pursuant to the foregoing sentence, the amount of the
payment shall be increased to the extent necessary to hold Employee harmless
from all income and excise tax liability attributable to such single lump sum
payment.

      3. Construction and Severability.

            The invalidity of any one or more provisions of this Agreement or
any part thereof, all of which are inserted conditionally upon their being valid
in law, shall not affect the validity of any other provisions to this Agreement;
and in the event that one or more provisions contained herein shall be invalid,
as determined by a court of competent jurisdiction, this instrument shall be
construed as if such invalid provisions had not been inserted.


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<PAGE>

      4. Governing Law. This Agreement was executed and delivered in New York
and shall be construed and governed in accordance with the laws of the State of
New York.

      5. Assignability and Successors. This Agreement may not be assigned by
Employee or Employer, except that this Agreement shall be binding upon and shall
inure to the benefit of the successor of Employer through merger or corporate
reorganization.

      6. Miscellaneous. This Agreement constitutes the entire understanding and
agreement between the parties with respect to the subject matter hereof and
shall supersede all prior understandings and agreements, including the April 1,
2002 version of this Agreement. This Agreement cannot be amended, modified, or
supplemented in any respect, except by a subsequent written agreement entered
into by the parties hereto.

      7. Counterparts. This Agreement may be executed in counterparts (each of
which need not be executed by each of the parties), which together shall
constitute one and the same instrument.

      8. Jurisdiction, Venue and Fees. The jurisdiction of any proceeding
between the parties arising out of, or with respect to, this Agreement shall be
in a court of competent jurisdiction in New York State, and venue shall be in
Onondaga County. Each party shall be subject to the personal jurisdiction of the
courts of New York State. If Employee is a party in a proceeding to collect
payments due pursuant to this Agreement and prevails in collecting payments due
in the proceeding or settlement of the proceeding, Employer shall reimburse
Employee for reasonable attorneys' fees incurred by Employee in connection with
such proceeding.


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<PAGE>

            The foregoing is established by the following signatures of the
parties.

                                        COMMUNITY BANK SYSTEM, INC.

                                        By:____________________________

                                        Its:___________________________


                                        COMMUNITY BANK, N.A.

                                        By:____________________________

                                        Its:___________________________


                                        _______________________________
                                               SANFORD A. BELDEN


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