A hypertension control program established by the Massachusetts Mutual Life Insurance Company in 1977 included education, on-site case finding, and referral to community physicians with a company-based follow-up system facilitated by assumption of all costs by the company. Ninety-eight percent (2, 463) of the employees were screened; 11% (277) had hypertension. Of these, 59% were in treatment and 36% were controlled at entry. More than 84% of the hypertensives accepted referral to care and 79% fulfilled all program requirements. By the fifth program year, 70% had achieved blood pressure control. Mean blood pressure declined from 150/93 to 142/88 mm Hg. Absenteeism for all hypertensives averaged 4.7 in the three years before and 5.7 during the four years of the program. Employees active in the program had fewer average days of absenteeism (4.7) than inactive participants (6.8). Modest cost and a favorable employee/physician response has made this a highly acceptable as well as an effective company health program.