Relationship Work Fatigue Related to Work Stress on Circadian Rythm Night Shift Operator Employee PT. Indonesia Bulk Terminal Kotabaru, South Kalimantan, Indonesia

Abstract

1.IntroductionNight shift worker adaptability to changing circadian rhythms influenced by environmental factors (Martiana,1999). Work rotation system commonly applied, then the coal mine workers have the same risk for decreased immune response due to changes in circadian rhythms. Work environment in a more closed mine very big influence on the speed of the decline immune response.Circadian rhythm closely related to melatonin levels. Circadian rhythm directly influence the normality of melatonin levels that naturally in the body. Melatonin is a hormone that normally can be found in animals, humans and other organisms (Reiter et al, 2001). Naturally, melatonin have the ability as an antioxidant. Unlike other antioxidants, the role of melatonin as a natural antioxidant in the human body is closely related to the elimination of free radicals (oxidants) and assist in the recovery of the negative effects of inflammation. Melatonin activity of as a antioxidant start to be a concern since of these substances are known oxidized through the photocatalytic mechanism involving free radical (Hardeland, Fuhrberg, 1996). Fatigue can reduce working capacity and endurance of work that characterized by the sensation of fatigue, decreased motivation, decreased activity. If there is no balance between the physical and mental work will lead to decreased of concentration, ability, and effectiveness. These are the signs of fatigue and exhaustion that continues lead to work stress.Time to restore the freshness from fatigue that caused by work to be an important part in the preparation of the work shift. This involves schedules and working hours. According to Jensen, et al (2003), and the schedule of working hours will be related to the needs of the freshness restore differ between men and women. According to Berger and Hobbs (2006), to reduce the error rate suggestwed doing naps in night shift workers, eliminating overtime over 12 hours and up to the task before 4 am for night shift. According to Galinsky, et al (2000), time off can also reduce musculoskeletal discomfort (MSD), eye disorders, mood and performance of workers.2.Problem StatementAccording to Arsenault and Dolan (1983) that work stress is an unpleasant psychological condition that arising because employees feel threatened, which is characterized by a mismatch between the individual and the demands of the job. Work stress is distress experienced by employees in dealing with the work. Work stress is evident from the symptoms, such as emotional instability, feelings worried, aloof, sleeplessness, excessive smoking, can not relax, anxiety, tension, nervousness, increased blood pressure, and digestive disorders. Sources of physical stress associated with the physical environment, such as lighting, noise, vibration, and so on. Sources of psychosocial stress related to environment of social organization. Sources of stress are included in this category include organizational climate, management style, job design, and role conflict.Based on preliminary observations, there are 54 employees of the operators that are divided into three groups that rotate in 2 shifts. Interview results suggest that almost majority operator experienced fatigue so this study wanted to determine the effect of work fatigue with work stress on the operator employees of PT. Indonesia Bulk Terminal (IBT) Mekarputih pulau Laut Kotabaru South Kalimantan Indonesia.3.Research QuestionsIs there a relationship of work fatigue with work stress on employees of the operator PT. Indonesia Bulk Terminal (IBT) Mekarputih Kotabaru South Kalimantan Indonesia.4.Purpose of the StudyDetermine the effect of work fatigue with work stress on employees of the operator PT. Indonesia Bulk Terminal (IBT) Mekarputih Kotabaru South Kalimantan Indonesia.5. Research MethodsResearch design using observational analytic type , cross sectional approaching method. The research population is all employees of the operator ,130 people. …