What management concept dictates that each person has only one supervisor?

The management concept that dictates that each person has only one supervisor is known as Unity of Command. This principle is essential in organizational structures as it helps to clearly define authority and responsibility. When an individual reports to a single supervisor, it minimizes confusion regarding instructions and accountability, which is crucial in emergency services like firefighting. This clarity ensures that decisions can be made more efficiently and effectively since communication flows in a straightforward manner.

In contexts such as firefighting, where quick and decisive action is critical, having a single point of command helps to maintain operational effectiveness and prevents conflicting directions from multiple supervisors. This ultimately supports a cohesive and coordinated response during incidents, leading to improved safety and performance overall.