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Exhibit 10.15 Alcan Pension Plan for Officers, dated 1 January 2006, as amended and restated.
 
 ALCAN INC.
 ALCAN PENSION PLAN
FOR OFFICERS




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ARTICLE I: INTRODUCTION
 1.01
    
    This document sets out the terms of the Alcan Pension Plan for Officers (Plan), amended and
restated as of 1 January 2006.1.02
    
    The Plan provides a pension based on your earnings in excess of the cap on earnings set under
your home country pension plan (HCPP).1.03
    
    The effective date of the Plan is 1 January 2003.
 ARTICLE II: ELIGIBILITY
 2.01
    
    You participate in the Plan if you are an officer of Alcan Inc. and the Human Resources
Committee of the Board of Alcan Inc. (HRC) designates you a participant.2.02
    
    Your participation in the Plan begins on the first day of the month and year determined by
the HRC and ends on the last day of the month and year determined by the HRC or if occurring
before, on the last day of the month following either your death, retirement or termination of
employment.
 ARTICLE III: PENSION CALCULATION
 3.01
    
    The pension formula set out below is the basis on which your pension payable under the Plan
is calculated. It takes into account the following three elements:
 
    
    your pensionable earnings which are your basic salary plus guideline Executive
Performance Award (EPA) subject to a maximum fixed from time to time by the HRC;
    
    your highest average earnings (HAE) which is the annual average of your 60 highest
consecutive months of pensionable earnings as defined above in excess of your highest
average earnings for the purpose of your HCPP. Your HAE is determined as of the date
that your participation in the Plan ends in accordance with section 2.02;
    
    your years (including fractional years) of participation in the Plan;
 3.02
    
    The pension formula is the following:
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3.03
    
    Your annual pension calculated in accordance with the pension formula in section 3.02 is
reduced by 10% for each year that your years of service with the Alcan group of companies is
less than ten at your retirement, termination or death.
 The HRC may, in its sole discretion, waive in whole or in part the reduction contemplated by
this section.
 ARTICLE IV: PENSION PAYMENT
 4.01
    
    Notwithstanding anything to the contrary contained in the Plan, your pension entitlement is
conditional on your continued employment with Alcan Inc. or any Alcan Group Company until your
entitlement to a vested pension under your HCPP.4.02
    
    If you retire or terminate employment on or after age 60 and with ten years or more of
service with the Alcan group of companies, your annual pension is calculated according to the
provisions of Article III and is payable from the first day of the month next following in
equal monthly installments during your lifetime with the last payment due on the first day of
the month of your death.4.03
    
    If you retire or terminate employment before age 60 or with less than ten years of service
with the Alcan group of companies, your annual pension is calculated according to the
provisions of Article III and is payable from the first day of the month next following your
attainment of age 65 in equal monthly installments during your lifetime with the last payment
due on the first day of the month of your death.At your request, payment of your pension shall be made to begin on the same date as your
HCPP pension in which case the amount of the monthly payments shall be adjusted based on an
actuarially determined equivalent stream of payments.4.04
    
    If you die before payment of your pension begins, the actuarial value of your pension
entitlement shall be paid to the beneficiary designated by you for the purpose of the Plan or
where there is no such beneficiary, to your beneficiary designated under your HCPP or where
there is no such beneficiary, to the legal representative of your estate.4.05
    
    At your request, payment of your pension shall be made to correspond to one of the optional
forms elected by you for payment of your HCPP pension in which case the amount of the monthly
payments shall be adjusted based on an actuarially determined equivalent stream of payments.4.06
    
    Your pension under the Plan shall be calculated and paid in United States dollars and at your
request shall be paid in the currency of your HCPP converted at the rate of exchange
prevailing at determination of the pension.4.07
    
    Any request made by you pursuant to either section 4.03, 4.05 or 4.06 shall be irrevocable.
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ARTICLE V: OTHER PROVISIONS
 5.01
    
    The Plan may be amended or terminated at any time by the HRC provided that such amendment or
termination shall not reduce any rights which you have acquired prior to the amendment or
termination date. Your acquired rights shall be determined on the basis of your years of
participation and your earnings at that date.5.02
    
    Unless otherwise determined by the HRC, the Plan shall remain an unfunded obligation of Alcan
Inc. or of any Alcan Group Company and all pensions payable under the Plan represent merely
unfunded, unsecured promises of Alcan Inc. or any Alcan Group Company to pay or cause to be
paid a sum of money in the future. No funds will be contributed by any person to a third
party or otherwise set aside to secure pensions under the Plan.5.03
    
    The administration of the Plan shall be managed jointly by Alcans Human Resources (Executive
Compensation) Department and Alcan Adminco (2000) Inc. Any question arising in the
administration of the Plan or the construction of any term of the Plan shall be resolved by
the HRC, in its sole discretion.5.04
    
    The administrators of the Plan shall keep accurate and detailed records of participation in
the Plan and upon request shall provide to a participant a statement of benefits.5.05
    
    Nothing in the Plan shall be deemed to give a participant the right to be retained in the
service of any Alcan group company or to interfere with the rights of any Alcan group company
to terminate a participants employment at any time.5.06
    
    Unless otherwise determined by the HRC, all pensions payable under the Plan shall not be
subject to any periodic or ad hoc increases according to an index.5.07
    
    The Plan shall be governed by the laws of the Province of Quebec and the laws of Canada. If
any part of the Plan is determined to be void or unenforceable, the validity and
enforceability of remaining parts of the Plan shall not be affected as a consequence.
 
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