New York Labor Law Section 4 - Work for a factory.

 4. Work for a factory. Work shall be deemed to be done for a factory
  whenever  it is done at any place upon the work of a factory or upon any
  of the materials entering into the product of the factory, whether under
  contract or arrangement with any person in charge of or  connected  with
  such  factory  directly or indirectly through one or more contractors or
  other third persons.

Last modified: February 3, 2019