“…First, we examine role ambiguity as an inhibitor of OCB, with a central focus on when this resource-depleting work condition might be less likely to exert a negative effect. We accordingly respond to calls for more applications of contingency approaches to study role stress outcomes (Chen, Takeuchi, & Shum, 2013;De Clercq & Belausteguigoitia, 2017b;Ralston et al, 2010) and for explications of how resourcedraining work conditions may prevent employees from performing voluntary work behaviours (Naseer, Raja, Syed, Donia, & Darr, 2016;Noblet et al, 2006;PaillĂ©, 2011). We postulate that employees' negative responses to unclear role descriptions, in the form of reduced OCB, may be mitigated by two distinct personal resources: their capabilities to cope with workplace adversity (i.e., political skill; Ferris, Treadway, PerrewĂ©, Brouer, Douglas, and Lux, 2007) and their positive 2…”