Tertiary activities are tasks that provide services instead of producing tangible goods. Their economic role in a modern economy is summarized below :
1. Major Source of Employment : In both developed and developing nations, a significant portion of the workforce is employed in the service sector (e.g., trade, transport, administration). As economies evolve, there is a clear shift from primary to tertiary sectors.
2. Infrastructure Development : Services like transport and communication form the backbone of economic development. They facilitate the movement of raw materials to industries and finished products to markets.
3. Knowledge-Based Economy : Services like education, health, and banking build human capital. It not only improves the standard of living but also earns foreign exchange through sectors like tourism.
4. Boosting Production and Efficiency : Skilled professional services (such as consultancy and advertising) help in increasing the efficiency and profitability of the primary and secondary sectors.