EG The practice of "hiring out" was one feature of urban slavery that gave the enslaved a route to independence in their daily lives. Through this process, slave owners rented slaves to others. Enslaved people could, by arrangement with their owners, also hire themselves out. They then resided in or near the renter, who was officially, if not in practice, required to refrain from mistreating his leased property. Money earned from hiring out went into the owners' pockets, but oftentimes the laborer got to keep some himself. In this way, a slave might save enough not only to live on his own, but also to buy his freedom. http://www.pbs.org/wnet/slavery/experience/living/history.html And another http://library.sc.edu/digital/slaveryscc/the-hiring-out-system.html