law: Beedi and Cigar Workers (Conditions of Employment) Act, 1966
  17.Working hours .- 
  No employee shall be required or allowed to
  
  work in any industrial premises for more than nine hours in any day or for more
  
  than forty-eight hours in any week:
  
  Provided that any audit employee may
  
  be allowed to work in such industrial premises for any period in excess of the
  
  limit fixed under this section subject to the payment of overtime wages if the
  
  period of work, including overtime work, does not exceed ten hours in any day
  
  and in the aggregate fifty-four hours in any week.