What organizational principle indicates that each employee should report to only one supervisor?

The principle that indicates each employee should report to only one supervisor is known as "Unity of Command." This concept is fundamental in organizational structure as it helps to establish clear lines of authority within an organization. When each employee reports to a single supervisor, it clarifies who is responsible for directing their activities, making accountability straightforward.

By adhering to this principle, organizations can reduce confusion and conflict that may arise when employees receive instructions or feedback from multiple supervisors. It streamlines decision-making and communication, enabling an efficient workflow and fostering a more organized and cohesive working environment. Unity of Command is particularly vital in emergency services, where clear leadership can significantly impact teamwork and outcomes during critical situations.

In contrast, other principles like Span of Control, Division of Labor, and Chain of Command serve different purposes. Span of Control deals with the number of subordinates that one supervisor can effectively manage; Division of Labor focuses on task specialization to increase efficiency; and Chain of Command outlines the hierarchy of authority in an organization, but does not specifically dictate reporting relationships like Unity of Command does.