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This study presents findings from an updated retrospective cohort mortality study of male police officers from January 1, 1950 to December 31, 1990 (n = 2,593; 58,474 person‐years; 98% follow‐up). Significantly higher than expected mortality rates were found for all cause mortality (Standardized mortality ratio [SMR] = 110; 95% confidence interval [95% CI] = 1.04–1.17), all malignant neoplasms (SMR = 125; 95%CI = 1.10–1.41), cancer of the esophagus (SMR = 213; 95%CI = 1.01–3.91), cancer of the colon (SMR = 187; 95%CI = 1.29–2.59), cancer of the kidney (SMR = 208, 95%CI = 1.00–3.82), Hodgkin's disease (SMR = 313; 95%CI = 1.01–7.29), cirrhosis of the liver (SMR = 150; 95%CI = 1.00–2.16), and suicide (SMR = 153; 95%CI = 1.00–2.24). All accidents were significantly lower (SMR = 53; 95%CI = 0.34–0.79). Mortality by years of police service showed higher than expected rates for (1) all malignant neoplasms in the 1‐ to 9‐years‐of‐service group; (2) all causes, bladder cancer, leukemia, and arteriosclerotic heart disease in the 10 to 19‐year group; and (3) colon cancer and cirrhosis of the liver in the over 30 years of service group. Hypotheses for findings are discussed. Am. J. Ind. Med. 33:366–373, 1998. © 1998 Wiley‐Liss, Inc.