This excerpt taken from the PBR 6-K filed Aug 19, 2005.
Defined Contribution Private Pension Plan
PESA, a PETROBRAS indirect subsidiary in Argentina, contributes to a defined contribution private pension plan applicable to all company employees whose salaries do not exceed a certain level. Based on this plan, PESA made additional contributions for amounts equivalent to those made by employees who exceeded the amounts required by law, which were inputted to results for the periods in which such contributions were made. Due to important changes in the macroeconomic scenario as from the end of 2001 and to the uncertainties on the economic unfolding in Argentina, PESA temporarily suspended this benefit as from January 2002. The benefit will be resumed as a provisional savings method is found for such purpose.