Under feudalism, peasants were forced to hand over a portion of their crops to the lord–or they were obligated to work part of the time on the lord’s land. Under capitalism, the class relationship is disguised by the fact that there is a “free” exchange of goods on the market. Nevertheless, a handful of large corporations owns the means of production, and the vast majority of people are deprived of those means. Workers are therefore compelled (not by the whip, but by the economic whip of survival) to sell their ability to work–their labor power–to the bosses.