OSHA defines workplace violence as “any act or threat of physical violence, harassment, intimidation, or other threatening disruptive behavior that occurs at the work site”. Importantly, this definition not only applies to worker-on-worker violence, but any violent act in the workplace. Therefore, businesses are required to put measures in place to mitigate the risk of physical, verbal, or psychological abuse instigated by anybody who may be present in the workplace – i.e., not only colleagues and managers, but also customers, patients, visitors, or passengers.