Introduction: Musculoskeletal disorders, premature tiredness caused by work and so on are arisen from different requirements of every job. According to the statistics provided by the World Health Organization (WHO), the most important cause of the loss of working time is the prevalence of musculoskeletal disorders in work environments.

Method: A cross sectional study with randomized sampling was conducted to determine the relationship between the physical work requirements and upper limbs disorders such as shoulders, wrist, elbow, and hand. data was gathered by using of a questionnaire consist of demographic data and   TMW (Tools for Modified Work) for physical work requirement and Maastricht Upper Extremity Questionnaire for upper limbs musculoskeletal disorders.

Results: Results showed that there was significant relationship between musculoskeletal disorder and the physical work requirements. In other words musculoskeletal disorders in all upper limb have been increased by deficiency in providing the physical work requirement 

Conclusion: This study confirmed that physical work requirement has a crucial role in musculoskeletal disorder especially in upper limbs. And it is essential to give full attention to provide standard requirements for workers.

Key words: Physical work requirement; Musculoskeletal disorder; Upper limb; Metal product  
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