Saddling people with debt, then paying them a minimum wage. Effectively they become slaves unable to leave their employer due to dependencies on things such as lunch programs, health insurance, leave benefits.

This system of wage-slavery is enforced today through police, lawyers, bankers and politicians working in accidental concert to ensure that you must go into debt (by renting or buying a house), and that you must work for whatever wages you can attract (because no money means no place to live), or be thrown in gaol for the sin of being poor.

There are towns in the USA re-introducing debtors prisons ("poor houses") where people who have defaulted on debt repayments can live in penury, having their wages garnished by the state before they get hold of the money themselves.

You mig have other rationalisations for it.