Stéphane Moyen

Capital Regulation in a Macroeconomic Model with Three Layers of Default

We develop a dynamic general equilibrium model for the positive and normative analysis of macroprudential policies. Optimizing financial intermediaries allocate their scarce net worth together with funds raised from saving households across two lending activities, mortgage and corporate lending. For all borrowers (households, firms, and banks) external financing takes the form of debt which is subject to default risk. This “3D model” shows the interplay between three interconnected net worth channels that cause financial amplification and the distortions due to deposit insurance. We apply it to the analysis of capital regulation.

UNEMPLOYMENT INSURANCE AND THE BUSINESS CYCLE: SHOULD BENEFIT ENTITLEMENT DURATION REACT TO THE CYCLE?

The aim of this paper is to study the optimal duration of unemployment benefit entitlement across the business cycle. We analyze whether the entitlement duration should be prolonged in bad and shortened in good times. Because of consumption smoothing, such a countercyclical policy can be welfare-enhancing as long as it does not affect labor market adjustment too severely and/or as long as it can even help to reduce inefficiencies there. If, however, the labor market is already quite inflexible, procyclical behavior may be preferable. In a calibrated dynamic business cycle framework, we find that countercyclical benefit entitlement duration may be preferable in the United States but not in Europe.

Optimal Unemployment Insurance and International Risk Sharing

We discuss how cross-country unemployment insurance can be used to improve international risk sharing. We use a two-country business cycle model with incomplete financial markets and frictional labor markets where the unemployment insurance scheme operates across both countries. Cross-country insurance through the unemployment insurance system can be achieved without affecting unemployment outcomes. The Ramsey-optimal policy however prescribes a more countercyclical replacement rate when international risk sharing concerns enter the unemployment insurance trade-off. We calibrate our model to Eurozone data and find that optimal stabilizing transfers through the unemployment insurance system are sizable and mainly stabilize consumption in the periphery countries, while optimal replacement rates are countercyclical overall. Moreover, we find that debt-financed national policies are a poor substitute for fiscal transfers.

Welfare-Theoretic Criterion and Labour Market Search

This paper extends the utility-based welfare criterion developed by Woodford (2003) to a model with labour market search. We show how the central banker’s concern for inflation stabilization depends on the average steady-state durations of unemployment and job vacancy.