1. It appeared that according to the qualification of health care managers, nurses showed high performing rate in duty of health managerment and health planning, Industrial hygienist showed high performing rate relating to working environmemt managemant, and regarding their holding an additional post, the number of environmental managers held more an additionnal post than other qualified managers, thereby showing significant relatively, and however, no relation with qualification was there in decision making.

2. The performing rate relatiag to health management was significantly correlate with female, youth, unmarried, higher education, general affairs in post of duty, general employee in position, only duty of health, low monthly income and nurse. But, the performing rate relating to environmental management was significantly correlate with manufacturing industries, industrial health and safety committee, male, old age, married, long work duration, additional post, high monthly income, and hygienist and environmental managers. The performing rate relating to health planning was significantly correlate with the performing rate relating to health and environmental management, but the performing rate relating to health management was not significantly correlate with the performing rate relating to environmental management.

3. In multiple regression analysis, common major determinants of the performing duty relating to health management, environmental management and health planning were industrial health and safety committee, type of industry, education, and qualification of industry's health care managers. Additionally, age was selected as highly correlated with the performing duty relating to environmental management, and work duration and post of duty of health care managers in industry were selected as highly correlated with the performing duty relating to health planning, Based on the results indicated above, it could be understood that characteristics of the worksite-industrial health and safety committee, scale and types of industry, and characteristics of health care managers-age, education, post of duty, work duration and qualification had relations with their type of the duty. Therefore, it is required that the reference to the above-showing results such as guiding for them to precisely grasp their performing duty according to their qualification, heightening their participation in decision-making, extending the industrial health service, etc., operation and management of health care managers at the worksite should be made into being more efficient.