title: Organizational factors associated with work-related sleep problems in a nationally representative sample of Korean workers.
abstract: OBJECTIVE
  The purpose of this study was to assess the association of organizational factors with work-related sleep problems (WRSP) among Korean workers.
  
  
  METHODS
  The data were derived from the First Korean Working Conditions Survey conducted in 2006 with a representative sample of the Korean working population (n = 10,039).
  
  
  RESULTS
  The overall prevalence of WRSP was 5.1% (95% confidence interval (CI) 4.7-5.5). Those who experienced sexual harassment at work (adjusted odds ratio (aOR) 3.47: 95% CI 1.77-6.81), discrimination due to sex (aOR 2.44: 95% CI 1.36-4.36) or age (aOR 2.22: 95% CI 1.52-3.23), violence at work (aOR 1.98: 95% CI 1.06-3.68), threat of violence (aOR 1.96: 95% CI 1.05-3.66), poor work-life balance (aOR 1.78: 95% CI 1.44-2.20), low job satisfaction (aOR 1.69: 95% CI 1.37-2.09), high cognitive (OR 1.64: 95% CI 1.32-2.03) and emotional (aOR 1.53: 95% CI 1.22-1.91) demands, job insecurity (aOR 1.32: 95% CI 1.07-1.63), and high work intensity (aOR 1.55: 95% CI: 95% CI 1.25-1.92) had an increased risk of WRSP compared to their respective counterparts (p < 0.01). Low social support was not significantly associated with WRSP (aOR 0.88: 95% CI 0.67-1.15).
  
  
  CONCLUSIONS
  The results revealed that poor psychosocial working conditions may be related to a high prevalence of WRSP among representative Korean workers.
authors.affiliation: Department of Occupational and Environmental Medicine, School of Medicine, Ajou University, Suwon, South Korea.
authors.forename: Jae Bum
authors.initials: JB
authors.lastname: Park
authors.forename: Akinori
authors.initials: A
authors.lastname: Nakata
authors.forename: Naomi G
authors.initials: NG
authors.lastname: Swanson
authors.forename: Heekyoung
authors.initials: H
authors.lastname: Chun
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D007588:Job Satisfaction; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D056910:Republic of Korea; D012737:Sex Factors; D012893:Sleep Wake Disorders / Q000453:epidemiology* / Q000209:etiology / Q000523:psychology*; D063508:Social Discrimination / Q000523:psychology; D012944:Social Support; D013315:Stress, Psychological / Q000453:epidemiology; D014754:Violence / Q000523:psychology; D014940:Work Schedule Tolerance / Q000523:psychology; D016526:Workload / Q000523:psychology; D017132:Workplace / Q000458:organization & administration* / Q000523:psychology*; D055815:Young Adult