We ask whether a PAYG-financed social security system is welfare improving in an economy with idiosyncratic and aggregate risk. We argue that interactions between the two risks are important for this question. One is a direct interaction in the form of a countercyclical variance of idiosyncratic...

This paper analyzes the implications of demographic change for economic growth in di®erent countries. Quantitative projections are based on a multi-country over- lapping generations model that is augmented with actual demographic data and pro- jections for di®erent OECD regions. According...

Despite their widespread use for the analysis of economic questions, a formal and systematic calibration methodology has not yet been developed for Auerbach-Kotlikoff (Auerbach and Kotlikoff 1987) overlapping generations (AK-OLG) models. Calibration as estimation in macroeconomics involves...

In the industrialized world the population is aging over time, reducing the fraction of the population in working age. Consequently labor is expected to be scarce, relative to capital, with an ensuing decline in the real return on capital. This paper uses demographic projections together with a...

This paper develops a theoretical model for the formation of subjective beliefs on individual survival expectations. Data from the Health and Retirement Study (HRS) indicate that, on average, young respondents underestimate their true sur- vival probability whereas old respondents overestimate...

Die gesetzliche Rente als erste Säule der Alterssicherung wird besonders wegen des demographischen Wandels künftig weniger großzügig ausfallen als bisher. Die entstehende Versorgungslücke soll durch die zweite und dritte Säule der Alterssicherung gefüllt werden. Um dieser...

We present a quantitative analysis of international capital flows induced by differential population aging and pension reform. It is well known that within each country, demographic change alters the time path of aggregate savings. This process may be amplified if pension reform shifts old-age...

This paper discusses the consequences of population aging and a fundamental pension reform – that is, a shift towards more pre-funding – for capital markets in Germany. We use a stylized closed-economy, overlapping-generations model to compare the effects of the recent German...

We present a quantitative analysis of the effects of population aging and pension reform on international capital markets. First, demographic change alters the time path of aggregate savings within each country. Second, this process may be amplified when a pension reform shifts old-age provision...

Hilft eine höhere Geburtenrate, die Folgen der Alterung zu dämpfen? Die Ergebnisse der Wirtschaftstheorie sind keinesfalls eindeutig, auch wenn die Idee – „Wenn wir zu viele Alte haben, brauchen wir mehr Kinder, um dies wieder auszugleichen“ – plausibel erscheint. Auch die...