Public institutions are funded, invested or financially supported by the government to deliver a public or government service, though not as a ministerial department, state or local government. There are various types of public institutions, from those whose businesses are as commercial as private enterprises, to those that function as government agencies. Such characteristics nay vary depending on each institution’s roles and financial structure. In general, public institutions deliver public goods and services on behalf of the government while they overcome the operational constraints of government agencies. In doing so, public institutions have made various contributions to the national economy through various activities. They help facilitate economic development, by venturing into new markets which private enterprises find it difficult to enter. They operate as natural monopolies to supply public goods and services at and affordable price. They build and maintain public infrastructure(SOC) such as roads, railroads and airports that form the basic foundations of economic growth and industrial development.