law: Factories Act, 1948 
  19. Latrines and urinals 
  (1) In every factory- 
  (a) sufficient latrine and urinal
  
  accommodation of prescribed types shall be provided conveniently situated and
  
  accessible to workers at all times while they are at the factory;
  (b) separate enclosed accommodation shall be
  
  provided for male and female workers;
  (c) such accommodation shall be adequately
  
  lighted and ventilated, and no latrine or urinal shall, unless specially
  
  exempted in writing by the Chief Inspector, communicate with any workroom
  
  except through an intervening open space or ventilated passage;
  (d) all such accommodation shall be maintained
  
  in a clean and sanitary condition at all times;
  (e) sweepers shall be employed whose primary
  
  duty it would be to keep clean latrines, urinals and washing places.
  (2) In every factory wherein more than two hundred and fifty
  
  workers are ordinarily employed- 
  (a) all latrine and urinal accommodation shall
  
  be of prescribed sanitary types;
  (b) the floors and internal walls, up to a
  
  height of 39[ninety centimeters], of the latrines and urinals and
  
  the sanitary blocks shall be laid in glazed tiles or otherwise finished to
  
  provide a smooth polished impervious surface;
  (c) without prejudice to the provisions of
  
  clauses (d) and (e) of sub-section (1), the floors, portions of the walls and
  
  blocks so laid or finished and the sanitary pans of latrines and urinals shall
  
  be thoroughly washed and cleaned at least once in every seven days with
  
  suitable detergents or disinfectants or with both.
  (3) The State Government may prescribe the number of latrines
  
  and urinals to be provided in any factory in proportion to the numbers of male
  
  and female workers ordinarily employed therein, and provide for such further
  
  matters in respect of sanitation in factories, including the obligation of
  
  workers in this regard, as it considers necessary in the interest of the health
  
  of the workers employed therein.