law: Contact Labour (Regulation and Abolition) Act, 1970
  12. Licensing of contractors
  (1) With effect from such date as the appropriate government
  
  may, by notification in the Official Gazette, appoint no contractor to whom
  
  this Act applies, shall undertake or execute any work through contract labor except
  
  under and in accordance with a license issued in that behalf by the licensing
  
  officer.
  (2) Subject to the provisions of this Act, a license under
  
  sub-section (1) may contain such conditions including, in particular,
  
  conditions as to hours of work, fixation of wages and other essential amenities
  
  in respect of contract labor as the appropriate government may deem fit to
  
  impose in accordance with the rules, if any, made under section 35 and shall be
  
  issued on payment of such fees and on the deposit of such sum, if any, as
  
  security for the due performance of the conditions as may be prescribed.