Additionally, in this study, those who experienced violence at th

Additionally, in this study, those who experienced violence at their work sites were twice as likely to Copanlisib cost suffer from sleep problems as those who did not. A study of Nurses’ aides revealed that those who had been exposed to threats or violence at work had a 19 % increased risk of poor sleep compared to those without such exposures (Eriksen selleck products et al. 2008). With fear acting as a mediator, the experience of violence is known to adversely affect workers’ health both mentally and physically (Rogers

and Kelloway 1997). Even when an individual is not a direct victim of violence, being a witness to a threatening act has been reported to exert negative effects (anxiety, illness symptoms, and negative occupational outcomes) (Hall and Spector 1991). The result of this study corresponds with the notion and that workers who are exposed to threats of violence had an equivalent risk of sleep problems as those who actually had undergone violence at work. Work-life imbalance has become an emerging issue in Korea because of an increase in working hours (Park

et al. 2010). Work-family imbalance has been reported to be a risk factor for depression (Frone et al. 1996), reduced well-being (Grant-Vallone and Donaldson 2001), exhaustion (Demerouti et al. 2004), learn more and alcohol abuse (Wang et al. 2010). The work-life interface has also been reported to be related to sleep. Those who had difficulties combining work and private life had increased odds for sleep disorders (men adjusted OR 1.54, 95 % CI 1.12–2.10 and women adjusted OR 1.81, 95 % CI 1.31–2.49) (Hammig and Bauer 2009). Another study in medical residents showed that work-family conflict was associated with sleep deprivation (Geurts et al. 1999). Our study found that work-life imbalance is related to increased sleep problems

in Korean workers as well. Job satisfaction has been consistently associated 4-Aminobutyrate aminotransferase with sleep problems in earlier studies (Doi et al. 2003; Kuppermann et al. 1995; Nakata et al. 2004a, 2007, 2008; Scott and Judge 2006). The results of our study are in line with these findings. For example, Scott and Judge (2006) reported that insomnia is positively related to job dissatisfaction and this relationship is mediated by hostility, joviality, and attentiveness in US administrative employees (Scott and Judge 2006). Doi et al. (2003) found that job dissatisfaction is the second major factor for poor sleep quality, which resulted in a twofold increase in the prevalence of disturbed sleep among white-collar employees in Japan (Doi et al. 2003). Another study in Japan revealed that low job satisfaction created a significantly increased risk for insomnia including difficulty maintaining sleep (DMS) after adjusting for multiple confounding factors (Nakata et al. 2004a). Our study, together with those from other countries, indicates that job dissatisfaction is a risk factor associated with sleep problems.

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