law: Dock Workers (Safety, Health and Welfare) Act, 1986 
  12. Power to exempt. – 
  The appropriate
  
  Government may, by notification in the Official Gazette, exempt from all of any
  
  or the provisions of this Act and of' the regulations, or such conditions, if
  
  any, as it thinks fit-
  a.     
  
    Any
  
  port or place, dock, wharf, quay or similar premises, if that Government is
  
  satisfied that dock work is only occasionally carried on or the traffic is
  
  small and confined to small ships and fishing vessels at such port, dock,
  
  wharf, quay or similar premises; or
  b.    
  
    Any,
  
  specified ship or class of ships, if that Government is satisfied, having
  
  regard to the features of such ship or ships, the nature, quantum and
  
  periodicity of dock work carried thereon and all other relevant factors, that
  
  it is necessary so to do:
  Provided that the
  
  appropriate Government shall not grant exemption under this section unless it
  
  is satisfied, that such exemption will not adversely affect the health, safety,
  
  and welfare of dock workers.