N.Y. Mil. Law § 243-D
Non-contributory retirement service credit for members of the New York state and local retirement systems, the New York city retirement systems or the New York state teachers' retirement system called to active military duty on or after September eleventh, two thousand one.
Notwithstanding any other provision of law, any member of the New York state and local employees' retirement system, the New York city retirement systems, the New York state and local police and fire retirement system, or the New York state teachers' retirement system who is called to active military duty on or after September eleventh, two thousand one and prior to January first, two thousand six, who is not receiving his or her full salary from a participating employer and is otherwise eligible to receive retirement service credit in such system for such active military duty pursuant to section two hundred forty-two or two hundred forty-three of this article, shall not be required to make member contributions to receive such credit.
N.Y. Mil. Law § 243-D