N.Y. WKC Law § 309

§ 309. Non-duplication. No compensation under the provisions of this\narticle shall be payable to any civil defense volunteer or to the\ndependents of a deceased civil defense volunteer otherwise entitled to\nreceive workers' compensation under the provisions of this chapter or of\nany other law, or volunteer firefighters' benefits or volunteer\nambulance workers' benefits under the provisions of the volunteer\nfirefighters' benefit law or the volunteer ambulance workers' benefit\nlaw or of any other law, or if the disabled civil defense volunteer or\nthe dependents of a deceased civil defense volunteer are entitled to\nreceive benefits under the disability benefits law or similar statute of\nany state or under any disability or retirement or insurance program of\nan employer who has contributed to the cost thereof or under any\nprovision of benefits by or under laws of the federal government or a\nstate or political subdivision thereof, except only as herein provided.\nCompensation payable under this article shall in such event, or any of\nthem, be reduced to an amount which, together with such other\ncompensation or benefits, shall not exceed in aggregate the amount of\ncompensation to which the claimant, or his dependents, would be entitled\nunder this article but for such other provision.\n