Present WRI has base period 2010 based on Labor Force Survey (LFS) 2010. The existing WRI produced by the BBS is based on wage data for 44 occupational groups, comprising of 11 occupations from the agriculture sector, 22 occupations from industry sector and 11 occupations from service sector. The data with information by gender are gathered by 64 District Statistical Offices (DSO). The required sector weights primarily derive from 2010 Labor Force Survey data, supplemented by information from the Agriculture Input Cost Survey, Pilot Construction Study as well as from a Special Field Study.