Historically Organizational Development is based on psychology peofessor Kurt Lewin researches and philosophy Lewin founded
Group Dynamics Research Center at Massachusetts Institute of Technology in 1944. Organizational Development researchers inherited
his two main opinions. The first is field theory and the second is Group Dynamics concept. According to field
theory, organizations are in a state of equilibrium as a result of struggles between groups who drive the change
and resist against it. Group dynamics are related to changing behaviors in groups. In this change concept thereational problems. Fourth Organizational Development is design, enforcement and strengthening the change. Finally, the Organizational Development is
focused on increasing organizational efficiency (Cummings and Worley, 2008).