A "Simple" Currency Union Model with Labor Market Frictions, Real Wage Rigidities and Equilibrium Unemployment

This paper derives a DSGE currency union model with labor market frictions, real wage rigidities and price staggering. The model combines many realistic features, but it is still tractable: like standard open-economy models, it can be closed in six equations. We derive and discuss the constrained efficient allocation and the decentralised equilibrium, under both flexible and sticky prices. We use the model to analyse how different labor market institutions or degrees of real wage rigidities influence the functioning of the currency union and the size and persistence of inflation and output differentials. We show that the presence of non trivial real imperfections affects substantially the transmission mechanism of shocks in general and, in particular, of monetary policy. Interestingly, we find that the implications of real wage rigidities and labor market frictions for business cycle fluctuations are likely to operate in opposite directions: a high degree of real wage rigidities tends to amplify the response of the real economy to shocks; when labor market are more sclerotic, instead, unemployment volatility tends to decrease while inflation volatility increases.Currency Union, labor market frictions, real wage rigidities, unemployment, sticky prices, inflation and output differentials

Asymmetric Labor Market Institutions in the EMU: positive and normative implications

How do labor market institutions affect the volatility and persistence of inflation and unemployment in a monetary union? What are the implications for monetary policy? This paper sets up a DSGE currency union model with unemployment, hiring frictions and real wage rigidities. The model provides a rigorous but tractable framework for the analysis of the functioning of a currency union characterized by asymmetric labor market institutions. Positively, we find that inflation and unemployment differentials depend strongly on the underlying labor market structure: the hiring friction lowers the persistence and increases the volatility of the inflation differential whereas real wage rigidities imply more persistence and variability in output and unemployment differentials. Normatively, we find that macroeconomic stabilization is easier when labor market frictions are high and real wage rigidities are low. This has important implications for optimal monetary policy: The optimal inflation target should give a higher weight to regions with more sclerotic labor markets and more flexible real wages.

Macroeconomic implications of downward wage rigidities

Growth of wages, unemployment, employment and vacancies exhibit strong asymmetries between expansionary and contractionary phases. In this paper we analyze to what degree downward wage rigidities in the bargaining process aect other variables of the economy. We introduce asymmetric wage adjustment costs in a New-Keynesian DSGE model with search and matching frictions in the labor market. We nd that the presence of downward wage rigidities strongly improves the t of the model to the skewness of variables and the relative length of expansionary and contractionary phases even when detrending the data. Due to the asymmetry, wages increase more easily in expansions, which limits vacancy posting and employment creation, similar to the exible wage case. During contractions nominal wages decrease slowly, shifting the main burden of adjustment to employment and hours worked. The asymmetry also explains the diering transmission of positive and negative demand shocks from wages to ination. Downward wage rigidities help explaining the asymmetric business cycle of many OECD countries where long and smooth expansions with low growth rates are followed by sharp but short recessions with large negative growth rates.labor market, unemployment, downward wage rigidity, asymmetric adjustment costs, non—linear dynamics

Asymmetric Labor Market Institutions in the EMU: Positive and Normative Implications

How do asymmetric labor market institutions affect the volatility of inflation and unemployment differentials in a currency union? What are the implications for monetary policy? To answer these questions, this paper sets up a DSGE currency union model with unemployment, hiring frictions and real wage rigidities. The model provides a rigorous but tractable framework for the analysis of the functioning of a currency union characterized by asymmetric labor market institutions. Positively, we find that inflation and unemployment differentials strongly depend on the underlying labor market structures. Moreover, asymmetries in labor market structures increase the volatility of both inflation and unemployment differentials. Normatively, we find that the optimal inflation target should give a higher weight to regions with more sclerotic labor markets but with more flexible real wages.Currency Union, labor market frictions, real wage rigidities, unemployment, sticky prices, inflation differentials, optimal monetary policy.

Labor market institutions and the business cycle Unemployment rigidities vs. real wage rigidities

This paper investigates the importance of labor market institutions for inflation and unemployment dynamics. Using the New Keynesian framework we argue that labor market institutions should be divided into those institutions that cause Unemployment Rigidities (UR) and those that cause Real Wage Rigidities (RWR). The two types of institutions have opposite effects and their interaction is crucial for the dynamics of inflation and unemployment. We estimate a panel VAR with deterministically varying coefficients and find that there is a profound difference in the responses of unemployment and inflation to shocks under different constellations of the labor market. JEL Classification: E32, E24, E52business cycle, Labor Market Search, monetary policy, Real Wage Rigidity, Unemployment

Macroeconomic implications of downward wage rigidities

Growth of wages, unemployment, employment and vacancies exhibit strong asymmetries between expansionary and contractionary phases. In this paper we analyze to what degree downward wage rigidities in the bargaining process affect other variables of the economy. We introduce asymmetric wage adjustment costs in a New-Keynesian DSGE model with search and matching frictions in the labor market. We find that the presence of downward wage rigidities strongly improves the fit of the model to the skewness of variables and the relative length of expansionary and contractionary phases even when detrending the data. Due to the asymmetry, wages increase more easily in expansions, which limits vacancy posting and employment creation, similar to the flexible wage case. During contractions nominal wages decrease slowly, shifting the main burden of adjustment to employment and hours worked. The asymmetry also explains the differing transmission of positive and negative demand shocks from wages to inflation. Downward wage rigidities help explaining the asymmetric business cycle of many OECD countries where long and smooth expansions with low growth rates are followed by sharp but short recessions with large negative growth rates. JEL Classification: E31, E52, C61asymmetric adjustment costs, downward wage rigidity, Labor market, non—linear dynamics, Unemployment

Unemployment, Inflation and Monetary Policy in a Dynamic New Keynesian Model with Hiring Costs

The dynamic general equilibrium model with hiring costs presented in this paper delivers involuntary unemployment in the steady state and involuntary fluctuations in unemploy- ment. After calibrating the model, through simulations we are able to show that our model with labour market imperfections outperforms the standard NK model as for the persis- tence of responses to monetary shocks. Besides, the model can be easily used to assess the impact of di¤erent market imperfections on both the steady state and the dynamics of the economy. We are also able to show how two economies, differing in their degrees of imperfection, react to policy or non policy shocks: a rigid economy turns out to be less volatile than a flexible economy. Something that reflects the actual experience of the US (flexible) and European (rigid) economies.Hiring Costs; Wage bargaining; Output Gap; New Keynesian Phillips Curve; Monetary Policy

Unemployment, inflation and monetary policy in a dynamic New Keynesian model with hiring costs

The dynamic general equilibrium model with hiring costs presented in this paper delivers involuntary unemployment in the steady state and involuntary fluctuations in unemployment. After calibrating the model, through simulations we are able to show that our model with labour market imperfections outperforms the standard NK model as for the persistence of responses to monetary shocks. Besides, the model can be easily used to assess the impact of different market imperfections on both the steady state and the dynamics of the economy. We are also able to show how two economies, differing in their “degrees of imperfection”, react to policy or non policy shocks: a rigid economy turns out to be less volatile than a flexible economy. Something that reflects the actual experience of the US (flexible) and European (rigid) economies.Hiring Costs, Wage Bargaining, Output Gap, New Keynesian Phillips Curve, Monetary Policy

Labour market imperfections, "divine coincidence" and the volatility of employment and inflation

The dynamic general equilibrium model with hiring costs presented in this paper delivers involuntary unemployment in the steady state as well as involuntary fluctuations in unemployment. The existence of hiring friction introduces externalities that, in turn, entail the breakdown of the "divine coincidence" without assuming real wage rigidity. Our model with labour market imperfections outperforms the standard NK model as for the persistence of responses to monetary shocks. The model also allows for an analysis of the volatility of economies, differing in their "degrees of labour market rigidity". It turns out that "rigid" economies exhibit less unemployment volatility and more inflation volatility than "flexible" economies.Hiring Costs, Wage Bargaining, Output Gap, New Keynesian Phillips Curve

Labor market rigidities and the business cycle: Price vs. quantity restricting institutions

We build a model that combines two types of labor market rigidities: real wage rigidities and labor market frictions. The model is used to analyze the implications of the interaction of different degrees and types of labor market rigidities for the business cycle by looking at three dimensions (i) the persistence of key economic variables; (ii) their volatility; (iii) the length, average duration and intensity of recessions and expansions. We find that real wage rigidities and labor market frictions, while often associated under the same category of labor market rigidities may have opposite effects on business cycle fluctuations. When the rigidity lies in the wage determination mechanism, real wages cannot fully adjust and shocks tend to be absorbed through changes in quantities. A higher degree of real wage rigidities thus amplifies the response of the real economy to shocks, shortens the duration of the business cycle but makes it more intense. When the rigidity lies in the labor market, it is more costly for firms to hire new workers and therefore unemployment does not vary as much, thus increasing inflation volatility and smoothening the response of the real economy to shocks. The cycle gets longer but less severe. Analyzing the interaction of institutions we show that these effects are reinforcing if institutions are substitutes - in the sense that countries with high labor market frictions tend to have low real wage rigidities and vice versa - while they are offsetting if institutions are complements. The findings from the model are supported when compared to the data of a range of OECD countries