Dear dharm,
Just to check you on the basics, DA is not calculated as per WPI but as per CPI (Consumer Price Index),more specifically CPI-IW (Industrial Workers) as it is generally argued that CPI is a better index to determine impact of price rise on cost of living. This is because food items has greater weigh in CPI-IW than WPI. In fact the Occupational Wage Survey (6th round, 2005) conducted by the Labour Bureau, National Commission of Labour points that among the service industries having DA as a pay component, 98.83 % use CPI Numbers brought out by Labour Bureau for payment of DA, 0.28 % use CPI Series brought out by State Govt. & the remaining 0.89 % are not using any CPI Series. Roshni
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