Work Related Musculoskeletal Disorder and Stress among Online Delivery Personnel in Chennai-A Cross-Sectional Study

Abstract

Background: Delivery personnel frequently work long hours under time pressure and irregular schedules, increasing their vulnerability to work-related musculoskeletal disorders (WRMSDs) and workplace stress. This study evaluated the frequency and determinants of WRMSDs and occupational stress among delivery personnel in Chennai. Methods: A cross-sectional study was carried out with 200 delivery workers who were selected using snow-ball sampling. Structured interviews were used to gather information. WRMSDs were assessed using the Nordic Musculoskeletal Questionnaire and workplace stress using the Workplace Stress Scale (score >20 indicat-ing high stress). Logistic regression and chi-square tests were analysed. Results: WRMSDs were reported by 54% of participants, predominantly involving the lower back and workplace stress was identified in 46%. Significant predictors of workplace stress included full-time employment (AOR: 3.88; 95%CI: 1.66-9.05), working >8 hours/day (AOR: 3.52; 95%CI: 1.41-8.76), and sleeping <6 hours (AOR: 3.99; 95%CI: 2.04-7.79). WRMSDs were associated with low-income (AOR: 2.86; 95%CI: 1.16-7.05), inadequate sleep (AOR: 7.29; 95%CI: 3.57-14.88), and <2 years of experience (AOR: 0.46 95%CI: 0.22-0.96). Conclusion: Delivery personnel face considerable WRMSDs and workplace stress, influenced mainly by long work hours and inadequate rest.