Analysis of physiological productivity levels in workers before and after ergonomics intervention of lightweight brick cutting tools

Brick cutting is a critical activity that requires precision and physical strength. Using brick-cutting tools that are not ergonomically designed often leads to unnatural working postures, such as hunching or bending over for prolonged periods. This study aims to analyze the effects of ergonomic interventions on reducing musculoskeletal complaints and increasing physiological productivity among lightweight brick-cutting workers. The sample consisted of five male workers, with an average age of 30, who worked 6 hours per day. Ergonomics interventions included redesigning the pedal switch for easy access, adding a footrest, and improving the work chair with a backrest and foam cushion. Results showed a 49.34% reduction in average musculoskeletal complaints (from 62.8 to 31.8) and a 4.08% increase in physiological productivity (from 275.2 to 286.4 pcs/6 hours). Improvements in tool design increase comfort, postural stability, and movement efficiency, thereby reducing physiological stress and increasing productivity. It was concluded that applying ergonomics principles to lightweight brick-cutting tools significantly improved comfort and work efficiency.