title: The Association between Job-Related Psychosocial Factors and Prolonged Fatigue among Industrial Employees in Taiwan.
abstract: OBJECTIVE
  Prolonged fatigue is common among employees, but the relationship between prolonged fatigue and job-related psychosocial factors is seldom studied. This study aimed (1) to assess the individual relations of physical condition, psychological condition, and job-related psychosocial factors to prolonged fatigue among employees, and (2) to clarify the associations between job-related psychosocial factors and prolonged fatigue using hierarchical regression when demographic characteristics, physical condition, and psychological condition were controlled.
  
  
  METHODS
  A cross-sectional study was employed. A questionnaire was used to obtain information pertaining to demographic characteristics, physical condition (perceived physical health and exercise routine), psychological condition (perceived mental health and psychological distress), job-related psychosocial factors (job demand, job control, and workplace social support), and prolonged fatigue.
  
  
  RESULTS
  A total of 3,109 employees were recruited. Using multiple regression with controlled demographic characteristics, psychological condition explained 52.0% of the variance in prolonged fatigue. Physical condition and job-related psychosocial factors had an adjusted R2 of 0.370 and 0.251, respectively. Hierarchical multiple regression revealed that, among job-related psychosocial factors, job demand and job control showed significant associations with fatigue.
  
  
  CONCLUSIONS
  Our findings highlight the role of job demand and job control, in addition to the role of perceived physical health, perceived mental health, and psychological distress, in workers' prolonged fatigue. However, more research is required to verify the causation among all the variables.
authors.affiliation: Department of Occupational Medicine, Changhua Christian Hospital, Changhua, Taiwan.|Department of Leisure Services Management, Chaoyang University of Technology, Taichung, Taiwan.
authors.forename: Feng-Cheng
authors.initials: FC
authors.lastname: Tang
authors.affiliation: Department of Psychology, Chung-Shan Medical University, Taichung, Taiwan.
authors.forename: Ren-Hau
authors.initials: RH
authors.lastname: Li
authors.affiliation: Department of Psychology, Chung-Shan Medical University, Taichung, Taiwan.|Room of Clinical Psychology, Chung-Shan Medical University Hospital, Taichung, Taiwan.
authors.forename: Shu-Ling
authors.initials: SL
authors.lastname: Huang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D004651:Employment / Q000523:psychology*; D005221:Fatigue / Q000523:psychology*; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D009784:Occupational Diseases / Q000523:psychology*; D012044:Regression Analysis; D013315:Stress, Psychological / Q000523:psychology*; D011795:Surveys and Questionnaires; D013624:Taiwan; D014937:Work / Q000523:psychology*; D055815:Young Adult