Which principle states that communications should go upward through established channels in an organization?

The principle that dictates communications should flow upward through established channels in an organization is line authority and chain of command. This principle emphasizes the hierarchical structure of an organization, where each level has a defined authority and responsibility. By adhering to established channels, communication remains clear and organized, ensuring that information moves efficiently from subordinates to superiors. This structured flow helps maintain order, accountability, and clarity in decision-making processes.

The other principles, while important to organizational dynamics, do not specifically address the direction of communication in the same way. Span of control focuses on the number of subordinates a supervisor can effectively manage. Delegation of authority pertains to assigning responsibilities to others while maintaining oversight. Unity of command refers to the concept that each employee should have only one direct supervisor, which helps avoid confusion in reporting relationships but does not inherently address the specific direction of communication.