Correlation between individual characteristics, physical workload, and mental workload on operational workers in terminal Jamrud Surabaya

Introduction: Work fatigue is a condition experienced by the workforce that can lead to a decrease in vitality and work productivity. There are several causes of fatigue, including age, length of service, nutritional status, physical workload, and mental workload. Based on observations at PT Pelindo Multi Terminal's Jamrud Terminal, many operational workers complain of work fatigue due to the heavy workload at work. Therefore, the purpose of this study is to determine the factors associated with fatigue to serve as the basis for the preparation of interventions. Methods: This quantitative research was carried out through analytical observational design. The number of samples taken was 25 people using total sampling. In this case, the independent variables measured were age, work period, nutritional status, physical workload, and mental workload. Meanwhile, the dependent variable studied was work fatigue using reaction timer tool. Results: The research results show that the age variable has a weak relation with work fatigue at 0.106, work period at 0.161, nutritional status at 0,212, and mental workload at 0.042. Meanwhile, the physical workload has a moderate relation with work fatigue at 0,306. Conclusion: The physical workload has the strongest relation with work fatigue.