title: Presenteeism among self-employed workers: Korean working conditions survey.
abstract: OBJECTIVE
  Presenteeism has become a public concern recently. Thus, we aimed to understand the relationship between self-employed workers and presenteeism using a nationally representative sample of Korean workers.
  
  
  METHODS
  Using data from the Korean Working Conditions Survey conducted in 2011, a total of 43,392 workers including paid employees and self-employed workers were analyzed. The effect of employment status on presenteeism was analyzed using logistic regression analysis. The independent variables were socioeconomic characteristics, working conditions, and working environments.
  
  
  RESULTS
  Among the 43,392 workers, 34,783 were paid and 8,609 were self-employed. Self-employed workers were more likely to exhibit presenteeism than were paid workers. An elevated odds ratio of 1.27 (95% CI 1.19-1.36) was found for presenteeism among self-employed workers.
  
  
  CONCLUSIONS
  Being self-employed was significantly related with exhibiting presenteeism. Additional research should investigate whether other factors mediate the relationship between employment status and presenteeism as well as ways to reduce presenteeism among self-employed workers.
authors: Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea.
authors: Min-Su
authors: MS
authors: Kim
authors: Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea.
authors: Jae Bum
authors: JB
authors: Park
authors: Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea.
authors: Kyoung-Bok
authors: KB
authors: Min
authors: Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea.
authors: Kyung-Jong
authors: KJ
authors: Lee
authors: Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea.
authors: Kimin
authors: K
authors: Kwon
keywords: Absenteeism; Korean working conditions survey; Presenteeism; Self-employed