“…Work hours can also play a role in affecting workplace stress and attitudes (for a review, see Sparks et al, 1997). Shift work can have a variety of negative effects, from disrupting sleep-wake cycles to more frequent exhaustion and fatigue (for examples, see Kecklund, 2010, andNethus, Hackworth, andBoquet, 2006). Shift length, among other shift-related factors, also has an important influence on health and well-being (Di Milia, 1998;Di Milia and Bowden, 2007;Smith et al, 1998).…”