This guide is a field-ready resource for violence prevention and Behavioral Threat Assessment & Management (BTAM) professionals who routinely collaborate with Human Resources. It explains why BTAM and HR must work in tandem to reduce risk while preserving employee rights, and it centers a critical reality: “protected” information does not automatically mean “prohibited” from sharing. The guide clarifies when health and mental health information may be lawfully disclosed, including scenarios involving serious and imminent risk, fitness-for-duty and workplace safety assessments, and reasonable accommodation processes. It also outlines what should not occur, even when risk is present, so teams avoid overreach, punitive reflexes, and preventable legal exposure. Finally, it provides practical tools to support defensible decision-making: a good-faith/rational-basis framework, a quick “sharing self-check,” and documentation guidance to help teams act effectively, ethically, and with legal confidence.