This document provides an overview of organizational behavior. It defines organizational behavior as a field that investigates how individuals, groups, and organizational structure impact behavior in organizations. It discusses key topics in OB like the Hawthorn studies, complementing intuition with systematic study, and that there are few absolutes in OB due to contingency factors. The document also outlines individual, group, and organizational independent variables that can impact dependent variables like productivity, absenteeism, and job satisfaction. Finally, it discusses challenges and future trends in OB like responding to globalization, improving quality and productivity, and reengineering organizations.