This document summarizes several theories of organizational structure and behavior in public administration. It discusses Weber's bureaucratic model, Taylor's scientific management approach, the human relations school focusing on noneconomic motivations. More modern theories examined include systems theory, information theory, game theory, and theories emphasizing learning organizations, communication, coordination, and alternative structures like centralized vs decentralized and tall vs flat hierarchies. The document aims to outline the evolution of thinking around organizational structures and dynamics in public administration.