N.Y. Retire. & Soc. Sec. Law § 110-C
Notwithstanding any other provision of law, a retired member shall have the right, at any time after the retiree's retirement, to execute and file a deduction authorization card with the comptroller authorizing the deduction from the retired member's retirement allowance of membership dues and such retired member's share of the cost for employee organization-sponsored benefit plans and the payment thereof to a retiree organization of which the retired member is then a member and which is then affiliated with either an employee organization certified or recognized as the collective bargaining representative of all employees in the negotiating unit of which the retired member was a part prior to his or her retirement or with an employee organization with which such employee organization is then affiliated. The comptroller shall thereafter deduct from the retirement allowance of such retired member the amount of membership dues and such amounts required to be paid by such retired member for such authorized employee organization-sponsored benefit plans, and shall transmit the sum so deducted to said retiree organization. Such authorization shall continue in effect until revoked in writing by such retired member. For purposes of this section the term "employee organization-sponsored benefit plans" shall include any and all insurance plans and/or other benefit plans sponsored by such retiree organization whether provided by (a) a not-for-profit corporation licensed under article forty-three of the insurance law; (b) any insurance company authorized to do business in this state; (c) a health maintenance organization issued a certificate of authority pursuant to article forty-four of the public health law; or (d) a self-insurance arrangement, welfare fund or benefit fund.
N.Y. Retire. and Soc. Sec. Law § 110-C