Any violation of any of the contract stipulations required by section 351(a)(1) or (2) or of section
351(b) of this title shall render the party responsible therefor liable for a sum equal to the amount of any deductions, rebates, refunds, or underpayment of compensation due to any employee engaged in the performance of such contract. So much of the accrued payment due on the contract or any other contract between the same contractor and the Federal Government may be withheld as is necessary to pay such employees. Such withheld sums shall be held in a deposit fund. On order of the Secretary, any compensation which the head of the Federal agency or the Secretary has found to be due pursuant to this chapter shall be paid directly to the underpaid employees from any accrued payments withheld under this chapter.