This paper deals with the methodology and data sources used for estimating gross value added from different categories of services, especially from the unorganised sector. The GVA estimates are first obtained for the benchmark year as a product of workforce estimate with the GVA per worker. These are moved forward to get the corresponding values for subsequent years by making use of physical and price indicators. In this paper we discuss the problems in getting the estimates of workforce for the base year. In most cases consumer price indices are used to estimate GVA per worker at current prices. It also discusses the problems relating to the use of physical indicators. Some suggestions for improving the estimates are given.
