Why are unemployment benefits more generous in some countries? This article argues that citizens trade off the redistributive and insuring effect of social insurance. As a result, the distribution of risk in a society has important consequences via popular demand for social policy-making. At the microlevel, the article shows that, in addition to income, the risk of unemployment is a key predictor of individual-level preferences for unemployment benefits. Based on the microlevel findings, the article argues that at the macrolevel the homogeneity of the risk pool is an important determinant of benefit generosity: the more equally unemployment risk is distributed, the higher unemployment replacement rates are. Empirical testing at both levels finds support for this account of social policy by popular demand.