Overview and perspective of occupational health from the international viewpoint.

Occupational health can mean many different things, but fundamentally it is concerned with the effect of work on health and the effect of health on the capacity for work. Many disciplines are involved at the professional level, including medicine, nursing, hygiene, and ergonomics. These are brought together in an international organisation, the Permanent Commission and International Association on Occupational Health. Administratively the United Nations specialised agencies, the International Labour Organisation and the World Health Organization, provide an international forum for policy making. National patterns of occupational health reflect variations in industrial history, methods of administration and health resourses, which result in occupational health services becoming the responsibility, either of the Department of Health or the Department of Labour.