N.Y. Comp. Codes R. & Regs. tit. 12, § 380-10.1
(a) In the event that a public employer as defined in section 212-b of the Workers’ Compensation Law elects to offer family leave benefits to public employees who are not represented by an employee organization as described in section 212-b of the Workers’ Compensation Law, such entity shall:
(4) provide 12 months written notice to the chair and all public employees who have been making contributions in accordance with section 209 of the Workers’ Compensation Law of any decision by the entity to discontinue the provision of voluntary coverage;
(b) In the event that a public employer and employee organization as defined in section 212-b of the Workers’ Compensation Law agree, pursuant to collective bargaining, to offer family leave benefits to public employees who are members of an employee organization as defined in section 212-b of the Workers’ Compensation Law, the public employer, or if agreed to, the employee organization, shall: