Emergency management is the generic name of an interdisciplinary field dealing with the strategic organizational management processes used to protect critical assets of an organization from hazard risks that can cause events like disasters or catastrophes and to ensure the continuance of the organization within their planned lifetime.

Emergencies, Disasters, and Catastrophes are not gradients, they are separate, distinct problems that require distinct strategies of response^{[citation needed]}. Disasters are events distinguished from everyday emergencies by four factors: Organizations are forced into more and different kinds of interactions than normal; Organizations lose some of their normal autonomy; Performance standards change, and; More coordinated public sector/private sector relationships are required.

Catastrophes are distinct from disasters in that: Most or all of the community built structure is heavily impacted; Local officials are unable to undertake their usual work roles; Most, if not all, of the everyday community functions are sharply and simultaneously interrupted, and; Help from nearby communities cannot be provided.