We outline a conceptual framework developed to meet the needs of public health professionals in the province of Ontario for incident management system-related education and training. By using visual models, this framework applies a public health lens to emergency management, introducing concepts relevant to public health and thereby shifting the focus of emergency preparedness from a strict “doctrine” to a more dynamic and flexible approach grounded in the traditional principles of incident management systems. These models provide a foundation for further exploration of the theoretical foundations for public health emergency preparedness in practice. (Disaster Med Public Health Preparedness. 2015;9:415–422)

Canada is moving forward quickly with plans to ensure that it is prepared to deal with emergencies. The National Framework for Health Emergency Management, released Nov. 26, 2004, recommends that a National Health Incident Management System (IMS) be developed. However, although most communities have successfully implemented IMS in the emergency services sector, many are still struggling with the integration of IMS into their health care systems. It is essential that all health care workers, regardless of profession or position, understand at least the basic concepts of emergency preparedness because of the wide variety of roles they may be asked to fulfill in an emergency situation. This article will review the basic concepts in emergency preparedness and management with a specific focus on IMS in health care.