Organization Behavior is the systematic study of behavior of employees working in the organization both individually & in groups. As an individual an employee has to play the role of superior, subordinate & peer. So he/she has to act differently. OB studies all the actions & reactions of employee as an individual. At the same time he/she has to work in groups & maintain mutual cooperation, coordination, proper communication, team work etc. Human behavior in organization ( job, absenteeism, employee turn over, productivity, working condition, motivation, employee satisfaction etc.) Individual & organizational interaction ( goal congruence ) Organization & its environment (PEST) OB is a derived subject & it has got its root from Sociology, Psychology, Social psychology, Anthropology, Political Science, Engineering & Management. Sociology – It is the systematic study of nature & development of society where human beings live & organizations grow. It is concerned with our customs, traditions, culture, structure, standard of behavior, group interaction etc. OB learns all these basic aspects from sociology & apply these in organizations. Psychology is the study of human mind & on that basis tries to understand their behavior. It consists of perception, thoughts, feelings, satisfaction, attitude, learning, leadership etc. OB focuses on all these aspects & on that basis helps to motivate employees, assign jobs & measure satisfaction. Sociology is the happy blending of both Sociology & Psychology. It deals with both individual interest & group interest. OB studies both aspects. Anthropology is the systematic study of human beings & their attitude. It helps to analyze the difference between national culture. Differences can be occurred on the basis of values, attitudes, religion & behavior. OB with the help of Anthropology studies cultures of different countries & prepares behavior standards. Political Science is the study of individual & group behavior within a particular political environment. It focuses on administrative process, allotment of position, power distribution, resource allocation, conflict resolution etc. OB applies all these aspects in organizations. Engineering is the work involved in designing & constructing engines & machinery or structures. OB wit the help of Engineering helps to design work structure & work in technical level. It also helps to set performance standards, motion study, piece-rate & time-rate system etc. Management is the systematic study of proper allocation & utilization of resources. It states getting things done through others. OB applies it in organizations in a successful manner.