It 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. OB studies 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)