A key figure which can be applied to measuring inter-generational imbalances involved in existing public pension schemes is given by the "implicit tax" that is levied on each generation's life-time income through participation in these systems. The implicit tax arises from the fact that, quite...

This paper was prepared in support of Japan’s G20 Presidency. It takes stock of ongoing and projected population ageing across G20 economies and its far-reaching implications for economic growth, productivity, inequality within and between generations and the sustainability of public finances....

A basic function of public pension systems is to guarantee a satisfactory old-age income for short-sighted low earners. In proportional (i.e., earnings-related) systems, this requires a sufficiently high contribution rate. At the same time, there should be a cap on the pension contribution base...

Studying the age-dimension of the probability distribution of pensions while assuming steadily rising real wages and time-invariant benefit-rules, two factors play important roles: (i) the weight of the wages in indexation of benefits in progress; (ii) the longevity gap. Factor (i) acts against...

This paper analyzes the effects of an unfunded pension system on economic growth using an extended overlapping generations model to include the informal sector. Emerging countries usually have a more significant informal sector than advanced ones. The findings based on the Thai economy data...

Population aging will be a major determinant of long-run economic development in industrial and developing countries. The extent of the demographic changes is dramatic in some countries and will deeply affect future labor, financial and goods markets. The expected strain on public budgets and...

We analyze the impact of population aging on Japan’s household saving rate and on its public pension system and the impact of that system on Japan’s household saving rate and obtain the following results: first, the age structure of Japan’s population can explain the level of, and past and...

Recent reforms that aim at reducing the upcoming burdens of population ageing might seriously harm low income individuals. An increase in old-age poverty and disability will be the result. Under this prospect, the present paper quantitatively characterizes the optimal progressivity of unfunded...

This paper presents four policy options to make Social Security sustainable under the coming demographic shift: 1) increase payroll taxes by 6 percentage points, 2) reduce the replacement rates of the benefit formula by one-third, 3) raise the normal retirement age from sixty-six to...

In this paper we address the question whether in case of population ageing a transition from an unfunded to a more funded pension scheme is politically feasible in a representative democracy. We consider two parties: a right-wing party which is willing to trade off intragenerational equity...