Administrative structures refer to the organized systems and frameworks that govern how an organization operates. These structures define roles, responsibilities, and the hierarchy within an organization, ensuring that tasks are completed efficiently. Common types of administrative structures include hierarchical, flat, and matrix models, each with its own advantages and disadvantages. In a hierarchical structure, authority flows from the top down, creating clear lines of command. A flat structure, on the other hand, has fewer levels of management, promoting open communication and collaboration. The matrix structure combines elements of both, allowing for flexibility and teamwork across different departments, enhancing overall productivity.