There are several good reasons to combat social dumping in public procurements.
Social dumping has serious social and economic consequences, which also extend beyond those directly affected. The more widespread social dumping becomes in a sector/industry, the harder it will be to uphold the workplace rights that are built up over time.
When dishonest suppliers win tenders based on unacceptable pay and working conditions, this obstructs competition on equal terms. Reliable suppliers could eventually be squeezed out of the market. In the experience of the Norwegian Labour Inspection Authority, there is often a correlation between social dumping and the uncovering of criminal situations/networks.
Working with suppliers who breach regulations also represents a significant reputational risk to your organisations
Contracting authorities have a particular responsibility to combat social dumping. Although pay and working conditions are primarily the responsibility of the direct employers, contracting authorities have a duty to check compliance with these requirements in connection with their contracts.