Indentured Servitude: basically a form of slavery that binds a worker to a company in order to pay back debt.
The following video illustrates a vivid example of Indentured Servitude occurring to today in the Middle Eastern Country of Qatar. The labour is being used to construct stadiums and other buildings for the 2022 World Cup of Soccer.
This form of slavery has occurred in Canada in a couple of occasions. One example is the use of Chinese Labour to help build railways in Canada, primarily in British Columbia. The following video dramatizes life as a Chinese labourer.