Efforts are being made to seek and explore the most suitable forms of management for different work setting. Some of the theories have been developed 100 years ago that provide stable framework for an organization even to today. In this unit we are going to study classical as well as modern theories which would lead us towards enhancement of productivity, job satisfaction and conducive environment of an organization. • The management theories in detail. • Principles of scientific management theory. • Principles of bureaucratic management theory. • Strengths and limitations of classical management theories. • Components of systems theory. • Behavioral approach to management. • Participate management a new model in management theories.