Leadership Lessons From Implementing a Mental Health Emergency Services Unit in a Canadian Emergency Department

Emergency departments are access points for people experiencing mental health and substance use crises, yet conventional emergency environments and workflows are often poorly aligned with psychiatric crisis care. Dedicated psychiatric emergency and crisis models are increasingly being implemented, including across Canadian hospitals. Drawing on the implementation of the Mental Health Emergency Services Unit at North York General Hospital and relevant literature, this article identifies five leadership lessons: treat environment as clinical infrastructure; bring mental health expertise to the front of the emergency pathway through concurrent care; build mental health capability beyond the specialized unit; integrate community partnerships into the clinical model; and embed evaluation throughout implementation. These lessons emphasize that redesign extends beyond physical capacity to include workforce, workflow, community relationships, and learning systems. Dedicated mental health emergency services should be approached as part of emergency mental health redesign, with implementation shaped by specific local context.