N.Y. Work. Comp. Law § 31

§ 31. Agreement for contribution by employee void. No agreement by an\nemployee to pay any portion of the premium paid by his employer to the\nstate insurance fund or to contribute to a benefit fund or department\nmaintained by such employer or to the cost of mutual insurance or other\ninsurance, maintained for or carried for the purpose of providing\ncompensation as herein required, shall be valid, and any employer who\nmakes a deduction for such purpose from the wages or salary of any\nemployee entitled to the benefits of this chapter shall be guilty of a\nmisdemeanor.\n