Role ambiguity as an antecedent to workplace bullying: Hostile work climate and supportive leadership as intermediate factors

Previous studies have shown role stress to be an important antecedent of workplace bullying. The present study investigated when and how a long-term effect of role ambiguity on exposure to bullying may be present. Based on the work environment hypothesis, we hypothesized that (a) there is a long-term effect of role ambiguity on exposure of bullying, (b) that this relationship is mediated by hostile work climate, and (c) moderated by supportive leadership. Using a three-wave design, with a time lag of 41-45 months, we showed support for all three hypotheses. The study underscores the importance of clear work-related roles as well as the importance of supportive leadership to prevent the onset of bullying following role stress and hostile climates.