“…Healthcare providers are considered "knowledge workers" and see their abilities affected by symptoms of anxiety, depression, traumatic stress, and fatigue that can be detrimental to the health and safety of the workers themselves, the patients they treat, and the organizations they represent. In the results of a 2007-2008 Warren et al (Warren, 2009;Warren et al, 2011) online survey of a cross-sectional convenience sample of 226 nurses and pharmacists, levels of depression were reported that were higher than national norms of worker presenteeism (Warren, 2009;Warren et al, 2011). Among nurses, 22.7% indicated depressive symptoms, 17.5% reported anxiety, 26% said they had problems sleeping, and 17.5% reported chronic fatigue/low energy levels (Warren, 2009;Warren et al, 2011).…”