Work is the field in which adults, and sometimes children, spend a large part of our lives. Occupational health hazards have evolved with the world of work. In addition to the physical, chemical and biological risks, there are new risks arising from globalization, the dominance of the free market, or new technologies. Teleworking, staff downsizing, outsourcing, the increase in working hours and precariousness led to a threat to physical, mental and social health: psychosocial risks.