Repetitive strain injuriesof the upper extremities refer to pain in the forearm, wrist and hand, caused by excessive strain. Diagnoses include tenosynovitis, epicondylitis and carpal tunnel syndrome. Treatment is aimed at alleviating pain, restoring normal physical functioning and maintain ability to work. Preventive interventions have shown some attenuation of discomfort but no effects on disease prevalance or sick leave days. Return to work interventions seem to decrease length of sickness absences. Part time work has hastened return to work and decreased sickness absences in musculoskeletal disorders.