Section 379. Dressing rooms

In every mercantile establishment or restaurant
  where  more  than  five  women are employed and in every terminal or car
  barn where  more  than  five  women  employees  of  a  street,  surface,
  electric,  subway  or  elevated  railroad  report  for duty a sufficient
  number of dressing rooms conveniently  located  shall  be  provided  for
  their  use.  All  dressing rooms shall be separated from waterclosets by
  partitions, shall have adequate floor space in proportion to the  number
  of  employees,  shall be provided with seats and with suitable means for
  hanging clothes and shall be constructed,  heated,  ventilated,  lighted
  and maintained in accordance with the rules of the board.