2006 New York Code - Laundries.

 
    §  296.  Laundries. A shop, room or building where one or more persons
  are employed in doing public  laundry  work  by  way  of  trade  or  for
  purposes  of  gain  is  a factory within the meaning of this chapter and
  subject to the provisions relating to factories. No such public  laundry
  work  shall  be done in a room used for sleeping or living purposes. All
  such laundries shall be kept in a clean condition and free  from  vermin
  and  from  all  impurities  of an infectious or contagious nature.  This
  section shall not apply to a female doing custom  laundry  work  at  her
  home for regular family trade.