"In modern society, having work or leisure may often seem a choice, but for most of humanity, work is an absolute necessity, and consequently most people are concerned with the real benefits they get from that work. They may accept a certain rate of exploitation of their labour as an inescapable condition for their existence, if they depend on a wage or salary, but beyond that, they will increasingly resist it. Consequently, a morality or legal norm develops in civil society which imposes limits for surplus-labour, in one form or another. Forced labour, slavery, gross mistreatment of workers etc. are no longer generally acceptable, although they continue to occur; working conditions and pay levels can usually be contested in courts of law."