Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 37 1 2008 03 15 83 91 E Habibi M Fereidan A Molla aghababai S Pourabdian 2015 10 03 Background: The study aims at clarifying prevalence of work-related musculoskeletal disorders (WMSDs) among steel mak­ing workers and employees as well as associated lost work days. Methods: A detailed questionnaire based on Nordic ergonomic questionnaire describing work history, ergonomic condi­tions at work, sign and symptoms of musculoskeletal system with in previous12 months was applied to the investigation among1030 male workers and employees in a steel making plant in Isfahan, Iran, 2004. Results: The prevalence of low back pain ranked top, regardless of job titles followed by knee pain. The age groups (24-35) and (34-45) manifested the most frequent number of (MSDs) and MSDs related lost workdays. Conclusion: This is almost in harmony with the prevalence of MSDs among general population and statistics presented by Bu­reau of Labor Statistics, the U.S Department of Labor. https://ijph.tums.ac.ir/index.php/ijph/article/view/2076 https://ijph.tums.ac.ir/index.php/ijph/article/download/2076/2057