subjection, subjugation - forced submission to control by others

bonded labor - an illegal practice in which employers give high-interest loans to workers whose entire families then labor at low wages to pay off the debt

servitude - state of subjection to an owner or master or forced labor imposed as punishment; "penal servitude"

serfdom, serfhood, vassalage - the state of a serf

practice, pattern - a customary way of operation or behavior; "it is their practice to give annual raises"; "they changed their dietary pattern"

labor, toil, labour - productive work (especially physical work done for wages); "his labor did not require a great deal of skill"