What do you understand by occupational structure?

Occupational structure refers to the distribution of the working age population (between 15 -59 years) in the various occupations available in the primary, secondary and tertiary sectors. It is an important indicator for the development levels of a country as a large proportion of primary sector workers indicates that the country is not developed. If a large proportion of the population is engaged in secondary and tertiary sectors, it indicates that the country is developed.