company shall withhold taxes from payments to contractor as required by law. upon payment of the amount withheld of the appropriate government entity or agency such amount withheld shall be deemed payment to the respective contractor and company shall have no further obligation to pay such amount to the respective contractor. production of a receipt or other evidence of withholding shall be conclusive proof between the parties of such withholding .upon written request from contractor, company shall provide a withholding tax receipt or other evidence of withholding to contractor