Factors Related to Work Fatigue in Heavy Equipment Operators in the Raw Material Warehouse at PT X in 2026

Abstract

Work fatigue is one of the occupational safety and health (OSH) issues that can reduce alertness and increase the risk of accidents, particularly among heavy equipment operators. This study aimed to determine the factors associated with work fatigue among heavy equipment operators in the raw material warehouse at PT X in 2026. This study employed a quantitative approach with a cross-sectional design. The study sample consisted of 126 operators selected using a total sampling technique. Data were collected using a respondent characteristics questionnaire, the Industrial Fatigue Research Committee (IFRC) questionnaire, the Pittsburgh Sleep Quality Index (PSQI), and noise measurements using a Sound Level Meter. Data were analyzed using univariate and bivariate analyses with the Chi-Square test. The results showed that 63.5% of respondents experienced moderate work fatigue. There were significant associations between age (p=0.004), nutritional status (p=0.037), sleep quality (p=0.012), length of service (p=0.020), and work shift (p=0.000) and work fatigue. There was no significant association between working hours and work fatigue (p=0.810), while noise exposure could not be analyzed because all respondents were exposed to noise levels of ≤85 dBA. The company should provide education on sleep hygiene, monitor workers' nutritional status, and strengthen safety talks as consistent efforts to prevent work fatigue. The company is also recommended to conduct regular fatigue monitoring, optimize work shift and rest period arrangements, and implement fatigue screening before work to maintain operator safety and readiness.