N.Y. Comp. Codes R. & Regs. tit. 4 § 28-3.8
During the effective period of an applicable donation exchange agreement between the Governor's Office of Employee Relations and an employee organization, recognized or certified pursuant to article 14 of the Civil Service Law to represent a bargaining unit of State employees, providing for donation of vacation credits, pursuant to an authorized leave donation program, to and from employees subject to this Subpart and employees subject to the leave donation program for that bargaining unit, such vacation credits may be donated by an employee who is subject to this Subpart to the benefit of an employee within the bargaining unit so represented, or received by an employee subject to this Subpart from an employee within such bargaining unit. Such vacation credits shall be donated, transferred and utilized in accord with the applicable donation exchange agreement and this Subpart or any such bargained program as applicable. Any donation exchange agreement shall be effective upon filing with the President of the Civil Service Commission and shall terminate 10 days after notice in writing by either party is served upon the president and the other party to the agreement.
N.Y. Comp. Codes R. & Regs. Tit. 4 § 28-3.8