New York Labor Law Section 283 - Smoking.

  283.  Smoking.  1.  No person shall smoke in a factory. A notice of
  such prohibition stating the penalty for violation thereof shall be kept
  posted in every entrance hall, elevator, stairhall and room of a factory
  in English, and in such other languages as the fire commissioner of  the
  city  of  New  York  in  such  city and elsewhere the commissioner shall
  direct.
2. The board in its rules may permit smoking in protected portions  of
  a  factory,  or  in such classes of occupancies where in its opinion the
  safety of the  employees  will  not  be  endangered  thereby.  The  fire
  commissioner  of  the  city  of  New York in such city and elsewhere the
  commissioner may issue such permits in accordance with rules adopted  by
  the board.
3.  The  fire  commissioner  of  the city of New York in such city and
  elsewhere the commissioner shall enforce this section.

Last modified: February 3, 2019