It's not slavery, but it's a certain amount of Unfree labor.
Unfree labor is a more apt term to describe what you are talking about since it includes: "destitution, detention, violence including death, compulsion,[1] or other forms of extreme hardship to either themselves or members of their families."[1]
Unfree labor is a more apt term to describe what you are talking about since it includes: "destitution, detention, violence including death, compulsion,[1] or other forms of extreme hardship to either themselves or members of their families."[1]
1. https://en.wikipedia.org/wiki/Forced_labour