Results of this study indicate that shift work was associated with increased social stress, work discontent, and sleep complaints. In turn, shift workers reported decreased use of primary healthcare. Moreover, stress was associated with increased sleep complaints and lower scores in perceived health. The interplay between stress and shift work did not produce any significant effects. Workforce health promotion should make attempts to reduce chronic stress, while occupational health physicians should emphasize the diagnosis of undetected sleep disorders. The study examined how a specific shift system was associated with stress, sleep and health among police officers. Moreover, this study investigated whether gender moderated the association between shift work and stress, sleep, and health. Additional analyses were performed to find out how stress and shift work interact in explaining sleep and health. The findings are based on a cross-sectional survey. A written questionnaire was sent to all employees of a local police force. Four hundred and sixty police officers volunteered to take part in the study. Two hundred and fifty-one subjects were shift workers (54.6 percent). Tables and references