Psychiatric patient assaults on healthcare staff are a worldwide occupational hazard. This present 20-year, retrospective study examined the characteristics of these staff victims in one public-sector, health care system and assessed the psychological support provided to these victims by the post-incident Assaulted Staff Action Program (ASAP). An additional analysis compared the victim characteristics in this same health care system at 10-, 15-, and 20-year intervals. The findings were consistent with earlier, worldwide studies. Staff victims tend to be younger, less formally educated, less experienced, and less trained mental health workers, residential house counselors, and trainees of differing disciplines. ASAP provided needed support to staff victims. Risk management strategies for safety, methodological issues, and the problem of denial in fielding a post-incident crisis intervention program for staff victims were discussed.