Capital deepening may affect the evolution of the wage differential between skilled and unskilled workers differently in countries with different labor market institutions. If labor market institutions raise the relative wage of unskilled workers in Germany, firms have incentives to invest...

We analyze dynamic interactions between market insurance, the stock of insurable assets and liquid wealth accumulation in a model with non-durable and durable consumption. The stock of the durable is exposed to risk against which households can insure. Since the model does not have a closed form...

We show theoretically that income redistribution benefits borrowingconstrained individuals more than is implied by standard relative-income and uninsurable-risk considerations. Empirically, we find in international opinion-survey data that younger and lower-income individuals express stronger...

We consider an economy where individuals privately choose effort and trade competitively priced securities that pay off with effort-determined probability. We show that if insurance against a negative shock is sufficiently incomplete, then standard functional formrestrictions ensure that...

With moral hazard and anonymous asset trade, first-order conditions need not characterize effort and portfolio choices. The standard procedure for establishing validity of the first-order approach in economies with one hidden asset is not fruitful when multiple assets are hidden.

We show that more human capital improves incentives in a standard optimal taxation problem: common assumptions about preferences and technology imply that the disutility of labor decreases less strongly in unobserved ability if agents have more human capital. Human capital thus reduces the...

We characterize optimal redistribution in a dynastic economy with observable human capital and hidden ability. The government can use education to improve the insurance-incentive trade-off because there is a wedge between human capital investment in the laissez faire and the social optimum. This...

Product market regulation and employment protection are highly correlated across OECD countries. Using an augmented model of monopolistic competition we show why in countries with more regulated product markets, incumbent workers prefer to protect jobs relatively more. Product market regulation...

Collective dismissal costs are an important part of employment protection legislation (EPL) and make firms' exit more costly. We show in a model with step-by-step innovations that dismissal costs spur innovation if product markets are not too competitive: technologically more advanced firms...