As part of the current debate on the reform of pension systems, this article examines the potential effects on consumption behaviour of implementing a lump-sum payment in a public pension system. This work explores an experimental investigation into retirement consumption behaviour with two central features: first, there exists a decreasing probability of surviving; second, there are two sequences of income, one when individual works and another when she is retired. The results show how subjects seem to plan their consumption and saving choices conditionated by both the long horizon with no incomes and the lump-sum payment. This yields, in the majority of periods, a surprising over-saving behaviour.
