The provision in Factories Act 1948 is given below, but the definition of worker covers the entire workforce including the managerial personnel as well as contract labour. Pl reckon accordingly.
47. Shelters, rest rooms and lunch rooms
(1) In every factory wherein more than one hundred and fifty workers are ordinarily employed, adequate and suitable shelters or rest rooms and a suitable lunch room, with provision for drinking water, where workers can eat meals brought by them, shall be provided and maintained for the use of the workers:
PROVIDED that any canteen maintained in accordance with the provisions of section 46 shall be regarded as part of the requirements of this sub-section: