Every officer or person designated as an inspector of or having supervision over the work to be performed under any such contract, in order to aid in enforcing the fulfillment thereof, shall, upon observation or investigation, report to the corporate authorities of the political subdivision, or agency thereof, which let the contract, all violations of minimum wage stipulations, together with the name of each laborer or mechanic who has been paid a wage less than that prescribed by the specifications, and the day or days of such violation.
43 P.S. § 157