The Pay-As-You-Go method is naturally associated in people’s minds with social security pension schemes. Indeed, even if some countries, such as Chile, have moved to fully funded methods, the vast majority of public systems have adopted the Pay-As-You-Go philosophy. On the other hand, and symmetrically, the fully funded system is generally required for supplementary schemes. It is therefore useful to briefly describe the specific aspects of managing first pillarFirst pillar schemes following the pas-as-you-go method.