OBJECTIVES: To set up a model for effective workplace health management as an occupational health service for employees of a steel factory in southern Taiwan.  METHODS: In compliance with the administrative regulation of the company's policy, 53 male employees with persistent blood pressure (BP) higher than 160/100 mmHg, and 23 male employees with persistent fasting blood sugar (FS) higher than 200 mg/dl during the last three consecutive annual employee health examination were identified through a process of cardiovascular risk assessment, and recruited into a health management program, which consisted of health education for diet control and regular exercise, mandatory weekly BP or postprandial blood sugar (PC) monitoring at company medical office for 3 months, and subject was required to submit proof of physician visit and drug treatment if the subject was noted to have BP higher than 140/90 mmHg or PC higher than 200 mg/dl in two consecutive measurements. Outcome evaluation was analyzed with descriptive statistics.  RESULTS:  At the end of the program, the mean systolic BP among the 53 hypertensive subjects decreased from 161 mmHg to 145 mmHg, diastolic BP from 104 mmHg to 94 mmHg, and 7 of them achieved satisfactory BP control under 120/80 mmHg. The mean PC among the 23 diabetic subjects decreased from 297 mg/dl to 240 mg/dl, and 5 of them achieved satisfactory PC control under 140mg/dl. Out of the 46 subjects who filled out the program satisfaction survey, 97.8% were satisfied with the dietary control component of the health education course, 93.5% were satisfied with the exercise component, 97.8% were satisfied with weekly BP or PC measurements, and 58.7% would recommend the same program to their colleagues in the future.  CONCLUSIONS: Company management policy is a key element in the success of workplace health management for the control of chronic diseases with high cardiovascular risk such as hypertension and diabetes.