Ergonomic analysis of dynamic working postures among sewing machine operators

Purpose Sewing machine operators face a significant health risk in the form of work-related musculoskeletal disorders (WMSDs). Although the importance of adopting dynamic postures to alleviate musculoskeletal symptoms is researched, a substantial proportion of operators still experience WMSDs. This study aims to fill a gap in the literature by analysing the impact of dynamic posture, as opposed to static ones, on musculoskeletal symptoms among sewing machine operators. Design/methodology/approach A quantitative research approach was used for this study. Data were gathered from 1,543 sewing machine operators in Sri Lankan textile and apparel manufacturing sector, encompassing seated, standing and dynamic working postures. The participants were selected using stratified random sampling, and data collection was conducted via a pre-tested, interviewer-administered questionnaire based on the extended translated version of the Nordic Musculoskeletal Questionnaire. To analyse the data, a one-way analysis of variance was performed to examine the impact of current working postures on pain and discomfort, considering various demographic variables such as age and gender. Findings The results indicate that 58.24% of sewing machine operators reported suffering from pain/discomfort due to work activities. Individuals in dynamic postures (21%) reported the least pain (52.7%), while majority of female sewing machine operators declared of having pain/discomfort as a result of work activities they perform. However, foot/ankle pain was common across postures. In summary, the discussion reveals the nuanced relationship between working postures and musculoskeletal pain/discomfort among sewing machine operators. Originality/value Enhancing ergonomics through dynamic postures has implications that extend beyond the textile and apparel manufacturing industry, offering valuable insights applicable to a wide range of workplace environments. This study highlights the importance of further research, particularly in assessing the effectiveness of ergonomic interventions designed to reduce musculoskeletal symptoms among sewing machine operators. It also underscores the importance of incorporating anthropometric data, adopting a holistic approach that considers factors such as the work environment, equipment design and worker health, and ensuring a more balanced or gender-specific sample in future studies.