Despite being a stock trader for a living i strongly agree with AITUC's demand that PF corpus should be for infrastructual development and not in the stock markets. PF is the most hard earned savings of a salaried individual and takes care of his post retirement needs so there is no way government can risk it in the stock markets which are specualtive and volatile in nature. Investing the Pf corpus in infrastructre has dual advantage - ensruing safety of the fund and development of the nation !
