law: Contact Labour (Regulation and Abolition) Act, 1970
  1. Short title, extent, commencement and application
  (1) This Act may be called the Contract Labor (Regulation and
  
  Abolition) Act, 1970
  (2) It extends to the whole of India.
  (3) It shall come into force on such date as the Central
  
  Government may, by notification in the Official Gazette, appoint and different
  
  dates may be appointed for different provisions of this Act.
  (4) It applies-
  (a) to every establishment in which twenty or
  
  more workmen are employed or were employed on any day of the preceding twelve
  
  months as contract labor;
  (b) to every contractor who employs or who
  
  employed on any day of the preceding twelve months twenty or more workmen:
  PROVIDED that the appropriate government may, after
  
  giving not less than two months' notice of its intention so to do, by
  
  notification in the Official Gazette, apply the provisions of this Act to any
  
  establishment or contractor employing such number of workmen less than twenty
  
  as may be specified in the notification.
  (5) (a) It shall not apply to establishments in which work only
  
  of an intermittent or casual nature is performed.
  (b) If a question arises whether work
  
  performed in an establishment is of an intermittent or casual nature, the
  
  appropriate government shall decide the question after consultation with the
  
  Central Board or, as the case may be, as State Board, and its decision shall be
  
  final.
  Explanation: For the purpose of this sub-section, work
  
  performed in an establishment shall not be deemed to be of an intermittent
  
  nature-
  (i) if it was performed for more than one hundred and twenty
  
  days in the preceding twelve months, or
  (ii) if it is of a seasonal character and is performed for more
  
  than sixty days in a year.