What is the relation between occupational structure and development?

The distribution of the population according to different types of occupation is referred as the occupational structure. The percentage of population that is economically active is an important index of development. The countries where more people are involved in secondary activities like manufacturing, construction and tertiary activities like transport, communication, commerce etc are said to be developed nation. Developing nations have higher proportion of people engaged in primary activities like agriculture, fishing, mining and quarrying.