Huge amount of green and dry leaf waste require extensive area for making vermicompost. This process is completed in two stages. The primary decomposition by microbes can occur in an open area, which reduces the bulk of the waste, while the second stage, carried out by exotic earthworms require a smaller area. The present attempt was made to find out the rate of reduction in the volume of eucalyptus leaf litter during vermicomposting. There has also been work to compare the decline in biomass of green and dry leaf litter during the vermicomposting process. The obtained results showed that during vermicomposting of green, dry leaf litter and cattle dung, the amount of organic waste was reduced by about 44-64%. Of the total volume reduced, about 35% decreased in the first four to five weeks, while the remaining reduction occurred in eight weeks. The obtained results recommend that, as large areas are required in the initial decomposition process, once the amount of waste is reduced to half of their initial volume, then the remaining waste can be transferred to a smaller area, where the second process of vermicomposting is done under controlled condition.