Ergonomic Risk among Production Employees at Polawat Engine Co., Ltd.

Abstract

This research aimed to study the physical condition and working conditions of production employees, assess environmental work risks, injury risks, and evaluate ergonomic work risks of production employees at Polawat Engine Co., Ltd. The research population consisted of 31 individuals, with a sample size of 19 individuals. The sample was purposive sampling from the employees in the diesel engine production line, totaling 8 people, and 11 people from the power generator production line. The research instrument was a questionnaire validated by three experts with a reliability coefficient of 0.785. Work posture risks were assessed using the Rapid Entire Body Assessment (REBA) method. Data analysis uses percentage, mean, and standard deviation. The results of the study on physical condition and working conditions showed that all production workers were physically normal, healthy, and free from chronic diseases. The majority were aged 25-29 years. Employees work that requires physical effort and repetitive movements. Work conditions that pose a risk of injury include standing or walking continuously for more than 20 minutes and repetitive straining of the arms or wrists, resulting in post-work fatigue. The most frequently injured body part was the shoulder. Regarding the work environment, it was found that all employees were at high risk in all four areas: repetitive movements, work posture, general conditions, and lifting. Additionally, it was found that all employees have a low level of injury risk. The ergonomic risk assessment using the REBA method showed a high to very high-risk level (10-12 points), indicating an urgent need to improve working conditions.