shocks.

We prove existence, monotonicity and differentiability of firm profits and provide first-order conditions that characterize the properties of the optimal contract. We demonstrate how the shape of the contract depends on the persistence and variance of the productivity process, on worker and firm...

We examine the optimal labor market-policy mix over the business cycle. In a search and matching model with risk-averse workers, endogenous hiring and separation, and unobservable search effort we first show how to decentralize the constrained-efficient allocation. This can be achieved by a...

Extensive literature demonstrates that workers with high tenure suffer large and persistent earnings losses when they are displaced. We study the reasons behind these losses in a tractable search model that includes a lifecycle dimension, endogenous job mobility, and worker- and...

We develop a macroeconomic model with physical and human capital, human capital risk, and limited contract enforcement. We show analytically that young (high-return) households are the most exposed to human capital risk and are also the least insured. We document this risk-insurance pattern in...

Empirical studies show that job search behavior depends on the financial situation of the unemployed. Starting from this observation, we ask how unemployment insurance policy should take the individual financial situation into account. We use a quantitative model with a realistically calibrated...

We study optimal capital taxation in a dynamic Mirrleesian model with time-nonseparable preferences. The model covers the widely used cases of habit formation and durable consumption. Time-nonseparable preferences change labor supply incentives across time and thereby generate novel motives to...