N.Y. Work. Comp. Law § 166

§ 166. Liability of employer and insurance carrier. The employer in\nwhose employment an employee participated in World Trade Center rescue,\nrecovery and clean-up operations shall be liable for any claim for a\nqualifying condition that is causally related to such participation\nprovided that such participation arose out of and in the course of such\nemployment. For the purpose of determining which carrier has insurance\ncoverage of such claim, the date of accident shall be considered the\nlast day of such participation.\n