Analysis of work related and non-work related factors relationship with fatigue among stamping workers in automotive industry

Work related fatigue is a significant hazard in many industrial sectors for the impact it caused to workers’ ability to do their jobs safely. Workers in manufacture sector, which often applies 24-hour production system, are at risk for work related fatigue. This study aimed to review manufacturing workers’ fatigue level and analyze factors that may influence it. Cross-sectional was used as a design study to determine the relationship between the independent and dependent variables investigated in this study. Sample of this study were 110 workers from production department in PT. XYZ Stamping Plant. Data collecting was done subjectively by using questionaire. Workers’ fatigue level was rated by Subjective Self Rating Test from IFRC, sleep quantity and quality by Pittsburgh Sleep Quality Index, and NASA Task Load Index was used to rate workload. Meanwhile, noise level used were from the company’s secondary data. The result showed that 47,3% of total 110 repondents were experiencing fatigue in the last week and it was related significantly to their work duration, workload, sleep quantity and quality.