Jeffrey V. Johnson

This study examined the impact of psychosocial work organization on cardiovascular disease (CVD) morbidity and the nine-year cumulative mortality incidence for a random sample of the male Swedish working population (N = 7219). A multiplicative measure was constructed to model the combined effects of psychological job demands, work-related social support and work control. Highly strained and isolated workers had a higher age-adjusted prevalence ratio for CVD morbidity and a higher age-adjusted risk ratio for CVD mortality when compared with those working under less strained and more collective conditions. Blue-collar workers showed the greatest risk for both morbidity and mortality when groups with highly isolated and strained conditions were compared to those in more collective and less strained conditions. Strained and isolated workers also had a substantially higher probability of developing and dying of CVD at a younger age than did those in less adverse environments.

This article introduces the special section on the American Psychological Association/National Institute for Occupational Safety and Health (APA/NIOSH) collaboration. The section includes an overview statement of National Institute for Occupational Safety and Health research by Linda Rosenstock and 5 competitively peer-reviewed articles submitted to the Journal of Occupational Health Psychology following their presentation in an earlier form at the 3rd APA/NIOSH conference in September 1995. This article provides a brief history of the APA/NIOSH collaboration forged at the turn of this decade.

BACKGROUND: The impact of long working hours on health has been of major concern since the late 19th Century. Working hours are again increasing in the US. METHODS: An overview of historical, sociological, and health-related research presented at an international conference on long working hours is discussed as an introduction to a special section in this issue. RESULTS: Research indicates that long working hours are polarizing along class lines with professionals working regular though longer hours and less well-educated workers having fewer though more irregular hours. Extended and irregular hours are associated with acute reactions such as stress and fatigue, adverse health behavior such as smoking, and chronic outcomes such as cardiovascular and musculoskeletal disorders. CONCLUSIONS: Improved methodologies are needed to track exposure to long working hours and irregular shifts longitudinally. Research should focus on the adverse impact that sleep-deprived and stressed workers may have on the health of the public they serve. A variety of protective efforts should be undertaken and evaluated.