This chapter aims to document what we know about workplace bullying. We describe the incidence, extent and types of bullying that occur in workplaces, as well as its conceptualization. Second, we review the empirical work that has investigated bullying and what has been found. With bullying being increasingly perceived as an organizational issue (e.g. Liefooghe and Mackenzie Davey, 2001), this chapter focuses more specifically on organizational level influences, and their impact on bullying behaviour. Third, we examine the intervention literature which attempts to suggest actions and strategies that might be used by victims and organizations in order to prevent or combat bullying or mobbing.