This document provides an overview of organizational behavior. It defines organizational behavior as relating to the process of conducting managerial work. Studying organizational behavior provides benefits such as skill development, personal growth through understanding human behavior, enhancing organizational and individual effectiveness, and sharpening common sense. The document then summarizes several important approaches in organizational behavior history, including classical management, the Hawthorne studies, the human relations movement, contingency approach, and positive organizational behavior. It outlines three levels of analyzing organizational behavior: individual, group, and organizational levels. Key topics in each level are also listed. [/SUMMARY]