Which management principle was NOT one of the 14 principles of management proposed by Fayol?

The principle that is not one of the 14 principles of management proposed by Henri Fayol is staffing and motivation. Fayol's principles concentrated on broader managerial guidelines for organizational efficiency and effectiveness, without directly specifying practices related to staffing and motivation as distinct principles.

Fayol outlined principles such as unity of command, which indicates that an employee should receive orders from only one superior to avoid confusion, and equity, which emphasizes fairness and justice in dealing with employees. Foresight, another principle, relates to the management practice of planning for the future needs of the organization, ensuring preparedness for upcoming challenges and opportunities.

In contrast, staffing and motivation refer more to operational tactics and HR practices, which, while essential to management, do not align neatly with Fayol’s overarching principles that guide the overall organization. Therefore, this reason establishes why the inclusion of "staffing and motivation" as a standalone principle is not valid within Fayol's framework.