Background: Work-related musculoskeletal disorders are considered as one of the most common occupational diseases and injuries. The high prevalence of the disorders has been reported in automobile industries due to numerous risk factors. This study was conducted to determine the prevalence of musculoskeletal disorders and the work-related risk factors in an automobile factory in Tehran.

Materials and Methods: This cross-sectional study was performed on 145 workers in an automobile factory in Tehran during 2009-10. The prevalence of disorders was evaluated with standard Nordic questionnaire and work-related risk factors with KIM index. Data analyzed using chi-square test.

Results: Musculoskeletal disorders were most commonly seen in tire installing (92.8%) and exhaust storage installing (88.4%) units. It was least common in door installing (43.7%) unit. Awkward posture, load lifting, back bending and torsional movements were the most important work-related risk factors for the disorders. A significant relationship was observed between prevalence of musculoskeletal disorders and occupational risk level (P<0.05).

Conclusion: Ergonomics programs and specific ergonomic interventions are necessary to correct work-related problems in the work stations of this industry.