“…In the short term, shift workers suffer from insomnia and/or excessive sleepiness, performance decrements, and mood swings (Boudreau et al, 2013;Drake et al, 2004;Rajaratnam et al, 2013). In the long term, workers may develop shift work disorder and a variety of other physical and mental health-related problems (Roth, 2012;Wright et al, 2013). Higher incidence rates of metabolic syndrome, cardiovascular disease, mood disorders, and cancer among shift workers have been well documented (Puttonen et al, 2010;Vogel et al, 2012;Wang et al, 2011).…”