Decentralization is the systematic delegation of managerial authority to middle and lower level management according to their weightage of responsibility. In practical, it is not possible to delegate absolute authority to the lower level management. Top level management can delegate only substantial power to the lower level management. Therefore, every organization has to decide how much authority should be centralized and how much should be decentralized. Decentralization depends on the size and nature of the organization and responsibility vested on the lower level. The top level management has to delegate such degree of authority to the lower level so that quick decisions and their implementation are possible.
Therefore, decentralization may be known as the philosophy of scientific and systematic delegation of managerial authority to the middle and lower level managers in accordance with their responsibility. This philosophy states that the top level management should keep limited authority and delegate maximum authority to operating levels. Top management has to play the role of supervisor.