The document discusses key elements of organizational structure including work specialization, departmentalization, chain of command, span of control, centralization and decentralization, and formalization. It describes common organization designs such as simple structures, bureaucracies, matrix structures, team structures, virtual organizations, and boundaryless organizations. The document also examines why organizational structures differ based on factors like strategy, size, technology, and environment. Finally, it discusses research findings on how aspects of organizational structure like work specialization and participative decision making impact employee behavior.