Social protection systems play a key stabilising role for individuals and societies, especially in the recent context of heightened uncertainties. Income stabilisation and related social policy objectives hinge on the extent to which social protection is accessible for those requiring support....

This paper analyzes how the possibility to complement social income insurance schemes with private insurance affects the political support for social insurance. It is shown that political support for social insurance is weakly decreasing in the replacement rate. Policy makers seeking to maintain...

Moral hazard means that people with insurance may take greater risks because they know they do not bear the full consequences of their actions. This can occur with both private insurance and social insurance. Deductibles can be used to alleviate the problem. An interesting way to bring...

This paper studies moral hazard in a sickness-insurance fund that provided the model for socialinsurance schemes around the world. The German Knappschaften were formed in the medieval period to provide sickness, accident, and death benefits for miners. By the mid-nineteenth century,...

We consider a life-cycle model with idiosyncratic risk in labor earnings, out-of-pocket medical and nursing home expenses, and survival. Partial insurance is available through welfare, Medicaid, and social security. Calibrating the model to the United States, we find that 12 percent of aggregate...

The Knappschaft underlies Bismarck's sickness and accident insurance legislation (1883 and 1884), which in turn forms the basis of the German social-insurance system today and, indirectly, many social-insurance systems around the world. The Knappschaften were formed in the medieval period to...

In this paper, we set up a three-period stochastic overlapping generations model to analyze the implications of income inequality and mobility for demand for redistribution and social insurance. We model the size of two different public programs under the welfare state. We investigate...

This paper analyzes how the possibility to complement social income insurance schemes with private insurance affects the political support for social insurance. It is shown that political support for social insurance is weakly decreasing in the replacement rate. Policy makers seeking to maintain...

Based on theoretical models of budget-balanced social insurance and individual choice, we argue that in addition to the well-known empathy mechanism whereby ethnic heterogeneity undermines sentiments of solidarity among a citizenry to reduce welfare generosity, population heterogeneity affects...