During the early years of the colonies, most work was performed by new settlers, as well as European indentured servants. These servants would come for a number of years and work with no pay in exchange for passage, board, food and other basic necessities. At the end of their contract, they were free and able to make a living on their own. This system, however, proved to be insufficient as plantations developed. Tobacco became an extremely succesful cash crop, and this meant that more labor was needed. The colonists turned to African slaves to satisfy this need for workers.
The Chesapeake became a "slave society" rather than a "society with slaves" when slaves became the main laborers in the region. Moreover, this change occured when plantations were no longer sustained in any other way aside from slave labor.