AIM To investigate the disability due to musculoskeletal disorders of the upper extremities in heavy industry workers.METHODS The population under study consisted of 802 employees, both white-and blue-collar, working in a shipyard industry in Athens, Greece. Data were collected through the distribution of questionnaires and the recording of individual and job-related characteristics during the period 2006-2009. The questionnaires used were the Quick Disabilities of the Arm, Shoulder and Hand(QD) Outcome Measure, the Work Ability Index(WAI) and the ShortForm-36(SF-36) Health Survey. The QD was divided into three parameters-movement restrictions in everyday activities, work and sports/music activities-and the SF-36 into two items, physical and emotional. Multiple linear regression analysis was performed by means of the SPSS v.22 for Windows Statistical Package.RESULTS The answers given by the participants for the QD did not reveal great discomfort regarding the execution of manual tasks, with the majority of the participants scoring under 5%, meaning no disability. After conducting multiple linear regression, age revealed a positive association with the parameter of restrictions in everyday activities(b = 0.64, P = 0.000). Basic education showed a statistically significant association regarding restrictions during leisure activities, with b = 2.140(P = 0.029) for compulsory education graduates. WAI’s final score displayed negative charging in the regression analysis of all three parameters, with b =-0.142(P = 0.0), b =-0.099(P = 0.055) and b =-0.376(P = 0.001) respectively, while the physical and emotional components of SF-36 associated with movement restrictions only in daily activities and work. The participants’ specialty made no statistically significant associations with any of the three parameters of the QD.CONCLUSION Increased musculoskeletal disorders of the upper extremity are associated with older age, lower basic education and physical and mental/emotional health and reduced working ability. AIM To investigate the disability due to musculoskeletal disorders of the upper extremities in heavy industry workers. METHODS The population under study consisted of 802 employees, both white-and blue-collar, working in a shipyard industry in Athens, Greece. the distribution of questionnaires and the recording of individual and job-related characteristics during the period 2006-2009. The questionnaires used were the Quick Disabilities of the Arm, Shoulder and Hand (QD) Outcome Measure, the Work Ability Index (WAI) and the The QD was divided into three parameters-movement restrictions in everyday activities, work and sports / music activities-and the SF-36 into two items, physical and emotional. Multiple linear regression analysis was performed by means of the SPSS v.22 for Windows Statistical Package. RESULTS The answers given by the participants for the QD did not reveal great discomfort regarding the execution of manual tasks, After the multiple linear regression, age revealed a positive association with the parameter of restrictions in everyday activities (b = 0.64, P = 0.000). Basic education showed a significant significant WAI’s final score was negative charging in the regression analysis of all three parameters, with b = -0.142 (P = 0.0), b = - 1.14 (P = 0.029) for compulsory education graduates. While the physical and emotional components of SF-36 associated with movement restrictions only in daily activities and work. The participants’ specialty made no Sensible significant associations with any of the three parameters of the QD.CONCLUSION Increased musculoskeletal disorders of the upper extremity are associated with older age, lower basic education and physical and mental / emotionalhealth and reduced working ability.