In case of developed countries, the evolution of the economy happened on the most logical pattern. Growth in the primary sector was followed by a growth in the secondary sector. After that, the growth of the tertiary sector followed.
The employment generation also kept pace with related changes in different sectors. The case of India is somewhat different.
The growth of the primary sector was not followed by the growth of the secondary sector, rather it was the tertiary sector which took the lead. But employment generation in either the secondary or tertiary sector could not keep pace.
Still a larger number of people depend on the primary sector for employment; compared to the other two sectors. This shows a disturbing trend because the primary sector is beset with the problem of hidden unemployment.