This chapter introduces organizational behavior as the study of how individuals and groups act within organizations. It discusses how organizations influence employee behavior and the forces reshaping management like technology, globalization, and diversity. The origins of management are explored through the scientific management principles of Taylor and Fayol's functions of management. Key topics in organizational behavior are identified like leadership, structure, change, and individual/group behavior. The chapter emphasizes that an organization's success relies on effectively managing its human resources.