Armand Imbert (1850-1922), was appointed as a doctor of medical physics at the Faculty of Medicine in Montpellier after aggregation. This enabled him to be in contact, in particular, with the subject of accidents at the Hospital of Santo Elói in the same city. Before 1898, accidents at work were considered, like other accidents, to be life events by chance. In this way, falling out of a roof was seen as an occupational risk for the workers concerned. E...