@reflex @dansup Forcing people to perform labor without pay or consent isn't a form of slavery? It is not chattel slavery but there are other definitions that this would meet.
I think it hits all four of the British definitions from Collins:
slavery in British English
(ˈsleɪvərɪ IPA Pronunciation Guide )
noun
1. the state or condition of being a slave; a civil relationship whereby one person has absolute power over another and controls his or her life, liberty, and fortune
2. the subjection of a person to another person, esp in being forced into work without pay
3. the condition of being subject to some influence or habit
4. work done in harsh conditions for low or no pay
And two out of four from the American side:
slavery in American English
(ˈsleɪvəri , ˈsleɪvri )
noun
1. the owning or keeping of enslaved people as a practice or institution; slaveholding
2. the condition of being an enslaved person; bondage; servitude
3. a condition of submission to or domination by some influence, habit, etc.
4. hard work or toil like that done by slaves; drudgery