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Modeling the influence of individual and employment factors on musculoskeletal disorders in fabrication industry

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Human Factors and Ergonomics in Manufacturing & Service Industries

Published online on

Abstract

This study was designed to identify the individual and employment factors that influence highly frequent, less severe self‐reported musculoskeletal disorder pain incidences among welders. A self‐reporting questionnaire to measure two individual factors (age and experience), six employment factors (physical workload, working hours, shift work, nature of employment, mode of apprenticeship training, and association with present employer), along with a modified Nordic questionnaire response sheet was used to collect data. The survey was conducted among welders employed in a fabrication cluster in a southern part of India. A total of 987 completed questionnaires (response rate: 66%) were analyzed using the SPSS program. The analysis showed that two employment factors, “shift work” and “mode of apprenticeship training” significantly influence self‐reported musculoskeletal disorder pain. The mode of apprenticeship training was found to influence musculoskeletal disorder pain in the neck region for annual prevalence and causes annual disability in neck and upper back regions. Similarly, shift work was found to influence musculoskeletal disorder pain in the shoulder and neck regions for weekly and annual prevalence and causes annual disability in shoulder, wrist/hands, upper back, and hip/thigh/buttock regions among welders. These factors can be considered as points for targeting intervention efforts.