N.Y. Lab. Law § 220-H
The advertised specifications for every contract for the construction, reconstruction, maintenance and/or repair of public work to which the state or a municipality is a party, where the total cost of all work to be performed under the contract is at least two hundred fifty thousand dollars, shall contain a provision requiring that all laborers, workers, and mechanics employed in the performance of the contract on the public work site, either by the contractor, sub-contractor or other person doing or contracting to do the whole or a part of the work contemplated by the contract, shall be certified prior to performing any work on the project as having successfully completed a course in construction safety and health approved by the United States department of labor's occupational safety and health administration that is at least ten hours in duration.
N.Y. Lab. Law § 220-H