law: Contact Labour (Regulation and Abolition) Act, 1970
  9. Effect of non-registration
  No principal employer of an establishment, to which this Act
  
  applies, shall-
  (a) in the case of an establishment required
  
  to be registered under section 7, but which has not been registered within the
  
  time fixed for the purpose under that section;
  (b) in the case of an establishment the
  
  registration in respect of which has been revoked under section 8, employ
  
  contract labor in the establishment after the expiry of the period referred to
  
  in clause (a) or after the revocation of registration referred to in clause
  
  (b), as the case may be.