The document summarizes the three main sectors of the Indian economy: 1) The primary sector involves agriculture and extraction of natural resources and accounts for a large portion of employment but faces problems with unemployment. 2) The secondary sector involves manufacturing and construction and adds value to products while employing 14% of the workforce and contributing 28% to India's GDP. 3) The tertiary sector is the largest, contributing 59% to GDP, employs 23% of the workforce in services, and faces issues attracting employment to lower-paying jobs.