N.Y.C. Admin. Code § 13-613: § 13-613 Exemption from execution and process.

The moneys or other property of the relief and pension fund of the department of street cleaning and all pensions or relief moneys granted and payable from such fund shall be, and the same are, exempt from levy and sale under execution, and from all processes or proceedings to enjoin payment, or to recover such moneys or property, by or on behalf of any creditor or other person having or asserting any claim against, or debt or liability of any person entitled to such pension or relief.