law: Industrial Disputes Act, 1947
  40. Power to amend Schedules
  
  
  (1) The appropriate government may, if it is of opinion that it
  
  is expedient or necessary in the public interest so to do, by notification in
  
  the Official Gazette, add to the First Schedule any industry, and on any such
  
  notification being issued, the First Schedule shall be deemed to be amended
  
  accordingly.
  (2) The Central Government may, by notification in the Official
  
  Gazette, add to or alter or amend the Second Schedule or the Third Schedule and
  
  on any such notification being issued, the Second Schedule or the Third
  
  Schedule, as the case may be, shall be deemed to be amended accordingly.
  (3) Every such notification shall, as soon as possible after it
  
  is issued, , be laid before the Legislature of the State, if the notification
  
  has  been issued by a State Government, or before Parliament, if the
  
  notification has been issued by the Central Government.]