law: Payment of Gratuity Act, 1972
  1.Short title, extent, application and commencement.-
  (1) This Act may be called the Payment of Gratuity Act, 1972.
  (2) It extends to the whole of India :
  Provided that in so far as it relates to plantations or
  
  ports, it shall not extend to the State of  Jammu and Kashmir .
  (3) It shall apply to-
  (a) every factory, mine, oilfield, plantation,
  
  port and railway company;
  (b) every shop or establishment within the
  
  meaning of any law for the time being in force in relation to shops and
  
  establishments in a State, in which ten or more persons are employed, or were
  
  employed, on any day of the preceding twelve months;
  (c) such other establishments or class of
  
  establishments, in which ten or more employees are employed, or were employed,
  
  on any day of the preceding twelve months, as the Central Government may, by
  
  notification, specify in this behalf.
  (4) It shall come into force on such date as the Central
  
  Government may, by notification, appoint.