This document provides an overview of organizational behaviour concepts. It discusses how organizational behaviour involves studying individual and group behavior within organizations and how that impacts organizational performance. It also summarizes several key approaches to organizational behaviour, including classical, human relations, and neo-human relations approaches. Specifically, it outlines concepts from theorists like Weber, Taylor, Mayo, Maslow, Herzberg, and McGregor and their views on bureaucracy, scientific management, motivation, and management styles.