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...

When markets are incomplete, social security can partially insure against idiosyncratic and aggregate risks. We incorporate both risks into an analytically tractable model with two overlapping generations and demonstrate that they interact over the life-cycle. The interactions appear even though...

When markets are incomplete, social security can partially insure against idiosyncratic and aggregate risks. We incorporate both risks into an analytically tractable model with two overlapping generations. We derive the equilibrium dynamics in closed form and show that joint presence of both...

Previous studies were plagued with considerable problems when interpreting and empirically analysing Wagner's Law. Therefore, we initially present some kind of "pure theory of government's share" for a two-person society based on the pure theory of public and private goods as originally...

This paper analyzes the growth and employment effects of dynamic fiscal policies in an overlapping generations model with endogenous growth and imperfect labour markets. With balanced-budget policies, the modelled closed economy grows at a constant rate which is the higher, the lower are the...

Es ist eine weitverbreitete Wahrnehmung, dass die Politik vergleichsweise schlecht funktio-niert, das heisst nur unbefriedigende Ergebnisse hervorbringt. Politiker und Parteien haben eine geringe Wertschätzung in der Gesellschaft. Dies gilt sowohl für die Bürger als auch für viele Experten...