The issue of depression as a cause of workplace difficulties was, until recently, a neglected topic. This is no longer the case, probably as a result of some major international (e.g. the World Health Organization's Global Burden of Disease Project) and national (e.g. the Kirby Report) initiatives.
The concern is filtering down, as seen in the recent series in the Globe and Mail (see below). This week, there was also some coverage by the Edmonton Journal, see here.