The following points might illustrate the importance of service sector in economy:-
1- The tertiary sector provides the basic services like public transportation, medical care, electricity, banking, post office etc under the control of the government.
2- The tertiary sector creates a huge area for employment even for uneducated and unskilled workers.
3- The tertiary sector distributes the consumer goods to different suppliers
4- The tertiary sector accounts for most of the national income and per capita income.