Which organizational principle refers to the maximum number of subordinates that any one supervisor can effectively control?

The principle that refers to the maximum number of subordinates that any one supervisor can effectively control is known as the span of control. This concept is essential in organizational management, particularly in the fire service and other emergency services. It ensures that supervisors have a manageable number of direct reports, allowing them to provide adequate oversight, guidance, and support. When the span of control is too wide, a supervisor may struggle to effectively manage their team, leading to decreased performance and accountability.

In practice, a well-defined span of control helps maintain clear communication and enhances operational efficiency. It is crucial for ensuring that each member of a team receives the attention they require and can successfully contribute to the organization's objectives. This principle works in tandem with other concepts like unity of command—whereby each subordinate reports to only one supervisor—to create a structured and effective command system. However, it specifically focuses on the quantity of those being supervised rather than the reporting relationships or task assignments found in other principles.