What is the optimal amount of redistributive taxation and social insurance? A recent literature in public economics has come closer to providing quantitative answers to this central policy question. This literature has derived “sufficient statistic” formulas that map elasticities estimated in the modern program evaluation literature into predictions about optimal policies (e.g., Peter A. Diamon...

BACKGROUND Although many studies have analyzed health insurance worldwide, most focus on whole populations rather than specific vulnerable groups. There is a lack of studies that compare different schemes. This paper evaluates the impact of different types of social health insurance and other associated factors on healthcare utilization and costs among middle-aged and elderly Chinese adults. ...

In developed countries, social security covers workers and their dependents against old age, unemployment, health, and other risks. In developing countries, formal-sector workers have access to social insurance, and the very poor have some access to social assistance and health services, but large population groups are not covered. Extending social security coverage would require delinking soci...

In spite of some cutbacks in entitlements, many welfare states' spending has continuously increased over the past decades, leading to larger tax burdens and often higher marginal tax rates. Proposals for reform often focus on reduced social insurance benefits and more actuarial insurance premia. In this paper it is shown that such reforms may have a smaller potential for reducing the marginal t...