Below are a few trusted resources I refer to in my work. The list is updated periodically. I recommend them highly in hopes that they will prove to be as useful to you as they have been to me.
Association of Threat Assessment Professionals
American Society of Safety Engineers
Corporate Alliance to End Partner Violence Website
Hostile Work Environment (employeeissues.com)
International Association for Healthcare Security & Safety
Internet Security and the Disgruntled Employee -The New Emerging Threat
The Leper in the Room: Workplace Violence: Women in Business
Occupational Safety and Health Administration
PowerPoint on “Domestic Violence Managing and Preventing a Workplace Spillover Incident”
Society for Human Resource Management
US Department of Justice, Special Report: Workplace Violence 1993-2009
Your Biggest Risk Is Disgruntled Insider
DOD Internal Review of the WNY Shooting – 20 Nov 2013
Independent Review of the WNY Shooting – 14 Nov 2013