Overweight and obesity are progressively associated with lower work ability in the general working population: cross-sectional study among 10,000 adults
Obesity is associated with many diseases and functional limitations. Workplaces are not always designed to accommodate this challenge. This study investigated the association between body mass index (BMI) and work ability in the general working population.
Currently employed wage earners (N = 10,427) from the 2010 round of the Danish Work Environment Cohort Study (DWECS) replied to questions about work and health. Cumulative logistic regression analyses controlling for age, gender, physical and psychosocial work factors, lifestyle, and chronic diseases modeled the associations between BMI and work ability.
BMIs above the normal range were progressively associated with lower work ability in relation to the physical demands of the job. Odds ratios for having lower work ability were 1.11 (95% CI 1.01–1.22), 1.17 (95% CI 1.01–1.34), 1.43 (95% CI 1.09–1.88), 1.69 (95% CI 1.10–2.62) for overweight and obesity classes I, II, and III, respectively. In subgroup analyses, the associations between BMI and work ability were more pronounced among individuals with mainly sedentary work than among those with physically active work. BMI was not associated with work ability in relation to the mental demands of the work.
BMIs above the normal range are progressively associated with lower work ability in relation to the physical demands of the job, especially among individuals with mainly sedentary work. Ergonomic research on how to optimally design workstations for workers with obesity are needed.
KeywordsOverweight Obesity Underweight Lifestyle disease Work ability index Adults BMI
The authors are grateful to colleagues Elsa Bach and Ebbe Villadsen at NRCWE for valuable discussions and assistance with access to data from the Danish Work Environment Cohort Study.
Compliance with ethical standards
Conflict of interest
The authors declare that there is no conflict of interest regarding the publication of this paper.
The Danish Work Environment Cohort Study (DWECS) was funded by the Danish Government as part of the surveillance of the Danish working environment. No external funding was obtained for the specific analyses or writing of the present article. No commercial associations, current and over the past 5 years, that might pose a conflict of interest.
- Bach E, Andersen LL, Bjørner JB (2010) Arbejdsmiljø og helbred i Danmark 2010. http://www.arbejdsmiljoforskning.dk/da/nyheder/arkiv/2011/samlet-rapport-om-arbejdsmiljoe-og-helbred-i-danmark-2010. Accessed 20 Oct 2016
- Committee System on Biomedical Research Ethics (2017) Committee System on Biomedical Research Ethics guidelines about notification. http://www.nvk.dk/~/media/NVK/Dokumenter/Vejledning_Engelsk.pdf. Accessed 27 June 2017
- Finnish Institute of Occupational Health (2014) Background of the Work Ability Index. http://www.ttl.fi/en/health/wai/background/pages/default.aspx. Accessed 15 Aug 2016
- James PT, Rigby N, Leach R, International Obesity Task Force (2004) The obesity epidemic, metabolic syndrome and future prevention strategies. Eur J Cardiovasc Prev Rehabil Off J Eur Soc Cardiol Work Groups Epidemiol Prev Card Rehabil Exerc Physiol 11:3–8Google Scholar
- The Danish Data Protection Agency (2017) The Danish Data Protection Agency standard terms for research projects. https://www.datatilsynet.dk/erhverv/forskere-og-medicinalfirmaer/standard-terms-for-research-projects/. Accessed 11 Aug 2016
- Tuomi K, Eskelinen L, Toikkanen J et al (1991) Work load and individual factors affecting work ability among aging municipal employees. Scand J Work Environ Health 17(Suppl 1):128–134Google Scholar
- Williams MJ, Hunter GR, Kekes-Szabo T et al (1997) Regional fat distribution in women and risk of cardiovascular disease. Am J Clin Nutr 65:855–860Google Scholar
- World Health Organization (2016) Global database on body mass index. http://apps.who.int/bmi/index.jsp?introPage=intro_3.html. Accessed 11 Aug 2016