Occupational hygiene science and its application in occupational health policy, at home and abroad.

This paper examines the role of occupational hygiene in the overall framework of occupational health. It draws attention to the unique combination of required individual science subjects, and to the way in which occupational hygiene science contributes to the practice of occupational hygiene in the real world. It focuses in particular on occupational exposure standards. The paper provides, as an example, the specific case of occupational aerosol exposures. It is here that scientific research has made a notable impact on standards and led to a considerable degree of international harmonization. Finally, some broader insights into occupational exposure standards are given, based on experience gained during visits to a number of contrasting countries. The similarities and differences between the various national approaches help indicate what is generic in how standards are set. Such insights provide a basis for further international harmonization in the future. It is concluded that occupational exposure standards appear to be most effectively applied in countries where there are strong occupational hygiene cultures.