law: Contact Labour (Regulation and Abolition) Act, 1970
  20. Liability of principal employer in certain cases
  (1) If any amenity required to be provided under section 16,
  
  section 17, section 18, or section 19 for the benefit of the contract labor
  
  employed in an establishment is not provided by the contractor within the time
  
  prescribed therefor, such amenity shall be provided by the principal employer
  
  within such time as may be prescribed.
  (2) All expenses incurred by the principal employer in providing
  
  the amenity may be recovered by the principal employer from the contractor
  
  either by deduction from any amount payable to the contractor under any
  
  contract or as a debt payable by the contractor.