Occupational injury: any personal injury, disease or death resulting from an occupational accident, an occupational injury is therefore distinct from an occupational disease, which is a disease contracted as a result of an exposure over a period of time to risk factors arising from work activity. If a person is injured in more than one occupational accident during the reference period, each case of injury to that person should be counted separately. Incapacity for work: inability of the victim, due to an occupational injury, to perform the normal duties of work in the job or post occupied at the time of the occupational accident. Nonfatal occupational injury: a nonfatal injury caused by an occupational accident.