What was "wage slavery" in company towns?

A system for holding workers to their jobs until debts were repaid.

Term used to relation between a slavery condition of dependence with the owner of a company.

Explanation:

The term wage slavery is concerned to a particular situation where a person's livelihoods depends of wage specially in a total and immediately way. Other concept handled is a term to draw an analogy between slavery and wage labor focusing on similarities between owning and renting a person.