Abstract The process of ‘contrarreform’ of brazilian’s social security is researched, even before the CPI’s social security (CPI of previdência), contrasting with the intensification of the crisis of private pension. The real conflicts coming from the expansion of private pension plans and their connexion with the capitalist crisis will be demonstrated. The connection between the expansion of private pension plans and the resumption of the crisis of overproduction in the years 1970/80, the Chilean and Argentinean experience of capitalization together with the trajectory of investments of funds' resources in Brazil (public titles and shares) until the present days is rescued.