Client violence and workplace safety are relevant issues for all social workers across practice settings. This entry addresses why and how social workers may be targets for a client's violent behavior, and what we know about who is at risk of encountering violence. Understanding violence from a biopsychosocial perspective, identifying risk markers associated with violent behavior, and an introduction to guidelines for conducting a risk assessment will be discussed. The entry concludes by identifying and describing some general strategies for the prevention of client violence.