N.Y. Work. Comp. Law § 45

§ 45. Notice to employers. The employer to whom notice of death or\ndisability is to be given, or against whom claim is to be made by the\nemployee, shall be the employer who last employed the employee in the\nemployment to the nature of which the disease was due and such notice\nand claim shall be deemed seasonable as against prior employers. The\nrequirements as to notice as to occupational disease and death resulting\ntherefrom shall be the same as required in section eighteen of this\nchapter, except that the notice shall be given to the employer within\ntwo years after the disablement or after the claimant knew or should\nhave known that the disease is due to the nature of the employment,\nwhichever is the later date.\n