The purpose of this study is to clarify the age differences of health behavior and health status of the white color male workers. The data used in this study is obtained from a survey of 1131 male workers in a major national computer manufacturing company in 1988. 1) After controlling for section, position, income, and education, age affects on most of health behavior and health status of the white color male workers, excepting regular eating habitation, the number of absent days, stress feeling, and general fatigue. 2) The 24-29 year old group has the most problematic health behavior which is caused by longer working hours and therefore sitting up till late at night. They complaints cumulative fatigue symptoms more frequently and hold lower job morale than the higher age groups. 3) Health behaviors of the 30-39 year old group are also problematic. Frequent coffee intakes and smoking, restlessness, and lack of exercise are observed among this group. These damaging behaviors are caused by the greatest responsibility for their jobs and family. 4) The 40-49 year old group shows more improved health behaviors such as having enough exercise and rest than the previous groups. However, they tend to drink much because of "settai" or business dinner and complaint gastroenteric disorder most frequently in all age workers. 5) Health behaviors of the 50-53 year old group are generally well organized and health damaging effects from their work are not observed. Also their subjective health status measured with feeling of fatigue is the most desirable in all age groups. However, owing to their advanced age, they have geriatric disorder most frequently in all age groups.
