What principle is defined by 'one supervisor'?

• A. Chain of command
• B. Unity of command
• C. Delegation principle
• D. Standard operating procedure

Answer: (B)

The principle defined by "one supervisor" is known as unity of command. This principle asserts that each individual in an organization should have only one direct supervisor. By having a single supervisor, it minimizes confusion regarding command, responsibility, and accountability. This structure ensures that employees know to whom they report and eliminates conflicting instructions that could arise from multiple supervisors. Unity of command is vital in emergency services, including firefighting, where clear lines of authority and responsibility are crucial for effective decision-making and coordination during operations.

In contrast, chain of command refers to the hierarchical structure that outlines who reports to whom within an organization, and while it is related to unity of command, it encompasses a broader framework. Delegation principle involves assigning authority to others, which does not specifically relate to the singular supervisory relationship stipulated by unity of command. Standard operating procedure refers to established procedures that guide actions but does not pertain to supervisory relationships. Thus, the concept of having only one supervisor is most explicitly captured by the principle of unity of command.