We develop general recursive methods to solve for optimal contracts in dynamic principal-agent environments with hidden states and hidden actions. In our baseline model, the principal observes nothing other than transfers. Nevertheless, optimal incentive-constrained insurance can be attained. We...

Some existing welfare programs (“work-first”) require participants to work in exchange for benefits. Others (“job search-first”) emphasize private job-search and provide assistance in finding and retaining a durable employment. This paper studies the optimal design of welfare programs...

A Welfare-to-Work (WTW) program is a mix of government expenditures on various labor market policies targeted to the unemployed (e.g., unemployment insurance, job search monitoring, social assistance, wage subsidies). This paper provides a dynamic principal-agent framework suitable for analyzing...

This paper studies the joint distribution of wages and employment levels in simple matching models of job creation and destruction with costly search and firm-specific labour demand shocks. Existing evidence on the relationship between employer size, the mean and variance of employees' wages,...

Development and convergence is explained as the transfer of technology embodied in machinery, to the manufacturing sector of those developing countries that institute the necessary property rights. The process is modelled within a Heckscher-Ohlin-Samuelson framework with capital mobility and...

Personnel economics has suggested conflicting arguments about the impact of increased wage dispersion within firms on workers’ productivity and firm performance. Besides giving more advancement incentives, bigger wage differentials might also give rise to less cooperation and more politics...

This study compares wage mobility in Portugal and the UK, replicating the work by Dickens (2000) and progressing to discuss the impact of differences in the institutional framework, which is more regulated and centralized in Portugal, with minimum wages, employment protection, and collective...

We present a structural framework for the evaluation of public policies intended to increase job search intensity. Most of the literature defines search intensity as a scalar that influences the arrival rate of job offers; here we treat it as the number of job applications that workers send out....

This paper analyses the welfare effects of changes in cross-sectional wage dispersion, using a class of tractable heterogeneous-agent economies. We emphasize a trade-off in the welfare calculation that arises when labour supply is endogenous. On the one hand, as wage uncertainty rises, so does...

In market economies identical workers appear to receive very different wages, violating the ‘law of one price’ of Walrasian markets. It is argued in this paper that in the absence of a Walrasian auctioneer to coordinate trade: (i) wage dispersion among identical workers is very often an...