Olivier Pierrard

Financial (In)Stability, Supervision and Liquidity Injections: A Dynamic General Equilibrium Approach

We develop a dynamic stochastic general equilibrium model with an heterogeneous banking sector. We introduce endogenous default probabilities for both firms and banks, and allow for bank regulation and liquidity injection into the interbank market. Our aim is to understand the interactions between the banking sector and the rest of the economy, as well as the importance of supervisory and monetary authorities to restore financial stability. The model is calibrated against real US data and used for simulations. We show that Basel regulation reduces the steady state but improves the resilience of the economy to shocks, and that moving from Basel I to Basel II is procyclical. We also show that liquidity injections relieve financial instability but have ambiguous effects on output fluctuations.

Inflation dynamics with labour market matching: assessing alternative specifications

This paper reviews recent approaches to modeling the labour market and assesses their implications for inflation dynamics through both their effect on marginal cost and on price-setting behavior. In a search and matching environment, we consider the following modeling setups: right-to-manage bargaining vs. efficient bargaining, wage stickiness in new and existing matches, interactions at the firm level between price and wage-setting, alternative forms of hiring frictions, search on-the-job and endogenous job separation. We find that most specifications imply too little real rigidity and, so, too volatile inflation. Models with wage stickiness and right-to-manage bargaining or with firm-specific labour emerge as the most promising candidates.

Nominal Wage Rigidities in a New Keynesian Model with Frictional Unemployment

In this paper, we propose a search and matching model with nominal stickiness a la Calvo in the wage bargaining. We analyze the properties of the model, first, in the context of a typical real business cycle model driven by stochastic productivity shocks and second, in a fully specified monetary DSGE model with various real and nominal rigidities and multiple shocks. The model generates realistic statistics for the important labor market variables.

Biased Technological Shocks, Relative Wage Rigidities and Low-Skilled Unemployment

The contrast between the evolution over the last decades of the European Union (EU) and the US unemployment rates, especially for the low-skilled, is well known. A consensus view is that these different outcomes can be explained by the interactions between common shocks and specific institutional setups. In this paper, we emphasize the interactions between technological changes and wages rigidities. We construct a fully calibrated general equilibrium model with two types of jobs and two types of workers, and with search unemployment. Our simulations show that with wage rigidities, technological changes suffice to generate a continuous rise in the low-skilled unemployment rate and an almost unchanged high-skilled unemployment rate. Without wage rigidities, the unemployment rates remain unchanged but the wage dispersion widens.

Structural Changes in the Labor Market and the Rise of Early Retirement in France and Germany

Abstract The rise of early retirement in Europe is typically attributed to the European system of taxes and transfers. A model with an imperfectly competitive labor market allows us to consider also the effects of bargaining power and of matching efficiency on pre-retirement. We find that lower bargaining power of workers and declining matching efficiency have been important determinants of early retirement in France and Germany. These structural changes, combined with early retirement transfers and population aging, are also consistent with the employment and unemployment rates, labor share and seniority premia.