This research study assessed the extent to which non-physical violence is a risk factor for physical violence against workers in health care settings. More than 600 nursing staff, other clinical providers, and non-clinical staff in two health care settings completed a cross-sectional survey. For the preceding 12-month period, 72.8% of workers reported at least one incident of non-physical violence and 21.3% reported at least one incident of physical violence. Workers who had experienced non-physical violence were 7.17 times more likely to experience physical violence than those who had not. Both patients and employees were perpetrators of non-physical and physical violence. These results indicate efforts to prevent or reduce physical violence against health care workers need to focus on non-physical as well as physical violence and employee as well as patient perpetrators.