With labor slavery, I was referring to heavy work slavery, like it was 400-500 years ago with africans and native americans. That kind of slavery is still present in our days, not much time ago, people here from Portugal were promised a good work and payment (not office work and that stuff, obviously) in Spain, but when they got there, they worked and were treated as pure slaves. They got lucky thought, the police found out about it eventually. There is probably more out there.