(Source : « Mieux vivre en entreprise », P. Angel, P. Amar, MJ Gava, Brigitte Vaudolon, Dunod 2010)

Burn-out was first identified in the health care sector (doctors, nurses).
It usually occurs after an important personal and emotional investment, when this investment becomes too heavy to handle. People threatened by burn-out are often too demanding vis-a-vis themselves and their entourage.

Burn-out comprises three phases: