The Effect of Work Posture and Body Mass Index on Work Productivity through Musculoskeletal Disorders Complaints in Operators

Introduction: Work productivity is the ratio between output, which is the result achieved against input, which is the resources used. Companies need to realise that the workforce as human resources is an important asset that must be maintained. The factors that directly affect work effectiveness and production efficiency are aspects of Occupational Safety and Health (K3). One of the occupational diseases that has a significant impact on productivity is Musculoskeletal Disorders (MSDs). Objectives: The aims of this study were to analyzed the direct and indirect effects between work posture and body mass index on work productivity through MSDs complaints in operators. Methods: This type of research is quantitative research with an analytical observational approach using a cross sectional study design conducted in January - February 2025. The total sample in the study was 170 operators consisting of RTG, QCC, RS, and HT operators. Data analysis used SPSS to analyze univariate, bivariate, and multivariate. Results: The results showed that there was no direct effect between work posture and IMT on work productivity (p = 0.830 and 0.775), there was a direct effect of work posture and IMT on MSDs complaints (p = 0.000), there was a direct effect of MSDs complaints on work productivity (p = 0.009), there was a direct effect of work posture and IMT on work productivity through MSDs complaints (p = 0.009 and 0.042). Conclusions: The recommendation for the company is to conduct ergonomics training for operators to raise awareness of the importance of good work posture and operators routinely carry out stretching exercises between work hours, conduct periodic BMI checks regularly, implement a regular diet by controlling eating emotions and consuming nutritious foods, and conduct continuous and more accurate ergonomic evaluations from certain parties.