[The informal economy: an occupational health issue].

Informal economy must be differentiated from concepts such as informal employment and the informal sector, each with its own characteristics. There are several types of informal workers that are grouped into several categories according to their work. The families of these workers are grouped into vulnerable job, which is also not beneficial for health coverage. Informal working conditions mean great morbidity resulting in economic losses and a large number of quality-adjusted life year, especially among young populations and women. Health policies are needed to reduce socio-economic inequalities, improve the training of health professionals and the accessibility of health services to these workers.