law: Building and Other Construction Workers (Regulation of Employment and Conditions of Service) Act, 1996 
  
  9.Appeal.-
  (1) Any person aggrieved by an order made
  
  under section 8 may, within thirty days from the date on which the order is
  
  communicated to him, prefer an appeal to the appellate officer who shall be a
  
  person nominated in this behalf by the appropriate Government;
  
  Provided that the appellate officer may entertain the appeal after the
  
  expiry of the said period of thirty days if he is satisfied that the appellant
  
  was prevented by sufficient cause from filing the appeal in time.
  (2) On receipt of an appeal under sub-section (1), the appellate officer shall,
  
  after giving the appellant an opportunity of being heard, confirm modify or
  
  reverse the order of revocation as expeditiously as possible.