Author(s): Mohammad Karim and Farhana Islam

Abstract: The construction industry is among the most hazardous workplaces, with musculoskeletal disorders (MSDs) and other injuries contributing significantly to economic losses and adverse health outcomes for workers. This study aimed to evaluate the impact of ergonomic design improvements on reducing workplace injuries in construction settings. The objectives were to identify ergonomic hazards, assess the effectiveness of existing interventions, and implement tailored ergonomic solutions to mitigate risks. Five active construction sites were selected for the study, involving 100 participants performing diverse construction tasks. A three-phase approach was adopted: (1) assessment of ergonomic risks using Rapid Upper Limb Assessment (RULA), force measurement devices, and postural analysis; (2) implementation of ergonomic interventions such as redesigned tools, mechanical lifters, and optimized workstation layouts; and (3) evaluation of outcomes over six months through injury rates, MSD incidences, and worker satisfaction. Statistical analyses included paired t-tests and ANOVA for significance testing. Additionally, this study identifies gaps such as the short evaluation period and the need for cost-benefit analysis and psychosocial considerations, suggesting these as essential components for future research. The results demonstrated a 40% reduction in workplace injuries and a 31.8% decrease in MSD incidences post-intervention, with statistically significant improvements (p<0.05). Worker satisfaction scores increased from 2.8 to 4.1 on a 5-point Likert scale, and task efficiency improved by 20%. Among interventions, workstation optimization and mechanical lifters showed the greatest impact. The study confirmed that tailored ergonomic interventions significantly enhance workplace safety, reduce injury risks, and improve worker satisfaction in construction environments. These findings align with prior research but highlight the need for longer evaluation periods and integration of psychosocial factors for comprehensive risk management. Future research should explore the cost-benefit analysis and scalability of ergonomic solutions across diverse construction settings.

Pages: 25-28 | Views: 120 | Downloads: 62

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