law: Payment of Gratuity Act, 1972
  15.Power to make rules.-
  (1) The appropriate Government may, by notification, make rules
  
  for the purpose of carrying out the provisions of this Act.
  (2) Every rule made by the Central Government under this Act
  
  shall be laid, as soon as may be after it is made, before each House of
  
  Parliament while it is in session, for a total period of thirty days which may
  
  be comprised in one session or in two or more successive sessions, and if,
  
  before the expiry of the session immediately following the session or the
  
  successive sessions aforesaid, both Houses agree in making any modification in
  
  the rule or both Houses agree that the rule should not be made, the rule shall,
  
  thereafter, have effect only in such modified form or be of no effect, as the
  
  case may be; so, however, that any such modification or annulment shall be
  
  without prejudice to the validity of anything previously done under that rule.