“…Moreover, in recent years, a multitude of studies has concluded that mental health is associated with working conditions and more particularly with psychosocial constraints at work. These constraints help to explain in part the differences observed according to occupational categories, although the specific proportion attributable to working conditions remains imprecise [Stansfeld et al, 1998[Stansfeld et al, , 1999Van der Doef et al, 1999;Tennant, 2001;Wilhelm et al, 2004;Ylipaavalniemi et al, 2005;Rugulies et al, 2006;Stansfeld and Candy, 2006].…”