What is the relation between occupational structure and development?

Occupational structure refers to the distribution of its people according to different occupations.

(i)The primary occupation include agriculture, animal husbandary, forestry, fishery. Manufacturing is a secondary occupation. Tertiary occupations include transport, communication, banking, service etc.
(ii)The percentage of population that is economically active is an important index of development. The proportion of people working in different activities varies in developed and developing countries.
(iii)Developed nations have a high proportion of people in secondary, and tertiary activities. Developing countries tend to have a higher proportion of their workforce engaged in primary activities. In India, about 64 per cent of the population is engaged only in agriculture