Flexible Fourier unit root test of unemployment for PIIGS countries

In this empirical study, we apply the flexible Fourier unit root test proposed by Enders and Lee (2012) to re-examine the hysteresis hypothesis of unemployment for PIIGS (Portugal, Ireland, Italy, Greece, and Spain) countries over the period from 1960 to 2011. We find that the Fourier unit root test has greater power than a linear method if the true data generating process of unemployment is a stationarity, non-linear process of an unknown form with structural change. The hysteresis in unemployment is confirmed for all PIIGS countries, with the exception of Portugal and Spain, when the Fourier unit root test is conducted.     

HYSTERESIS AND THE REGIONAL NAIRUs IN ITALY

This paper investigates the determinants of regional unemployment disparities in Italy. Relying on panel unit root tests and data over the 1977–2003 years, we reject the hysteresis hypothesis and then proceed to estimate the non‐accelerating inflation rate of unemployment (NAIRU) for each of the 20 Italian regions. Our estimates of the regional NAIRUs turn out to be fairly precise and allow us to draw two interesting conclusions. First, the hypothesis of constant regional NAIRUs between 1977 and 2003 is supported by the data. Second, we find that there is a significant degree of heterogeneity among the regional NAIRUs.     

Hysteresis in unemployment for 17 OECD countries: Stationary test with a Fourier function

In this empirical study, we apply stationary test with a Fourier function proposed by Becker et al. (2006) to re-examine the hysteresis hypothesis in unemployment for 17 OECD countries over the 1960 to 2009 period. The hysteresis in unemployment is confirmed for most of these 17 OECD countries, with the exception of Australia, Canada, Finland, France, Sweden and the USA, when Becker et al.'s (2006) stationary test with a Fourier function is conducted.     

The presence of unemployment hysteresis in the OECD: what can we learn from out-of-sample forecasts?

This paper investigates the relevance of unemployment hysteresis in seventeen OECD countries. We employ an out-of-sample forecast exercise in which a mean-reverting autoregressive model is compared to an autoregressive model with an imposed unit root. A substantial difference in forecasting performance between the two models is established for many countries, but the results are mixed in their strength. The evidence for unemployment hysteresis in Austria, Finland, Iceland, Israel, Italy, Japan and Sweden is, however, convincing. For no country can unambiguous support for a mean reverting unemployment rate be found.     

Testing for hysteresis: Unemployment persistence and wage adjustment

This paper proposes a new testing strategy for unemployment hysteresis as the joint restriction of a unit-root in the unemployment rate and no feedback effect of unemployment in the Phillips wage equation. The associated test statistics are derived when this joint restriction is imposed and when a sequential two steps testing strategy is adopted. An empirical application leads to reject the null hypothesis of wage hysteresis for most of our OECD countries. Evidence against hysteresis is reinforced when accounting for wage adjustments in the bivariate approach. First version received: July 1999/Final version received: May 2002 RID="*" ID="*"  We thank R. Boyer, F. Collard, F. Karamé, F. Langot, F. Mihoubi, W. Pohlmeier and two anonymous referees for fruitful comments. This paper has also benefited from discussions at the T2M conference (Montréal, may 1999) and ESEM99 (Santiago, august 1999). The traditional disclaimer applies.     

HYSTERESIS HYPOTHESIS IN UNEMPLOYMENT AND LABOUR FORCE PARTICIPATION RATES: EVIDENCE FROM AUSTRALIAN STATES AND TERRITORIES *

This article simultaneously investigates the hysteresis hypothesis of unemployment and labour force participation using regional level data in Australia. The conventional univariate and panel unit root tests indicate that the hysteresis hypothesis cannot be rejected for most of the regions in Australia. To further confirm if the hysteresis finding in unemployment and labour force participation results from not considering structural breaks. We employ a panel stationarity test recently developed by Carrion‐i‐Silvestre et al. (2005 ), which considers multiple structural breaks and cross‐sectional dependence. The test results lend support for unemployment hysteresis and participation regime‐wise stationarity. Accordingly, the findings imply that a temporary shock may have permanent effects on the unemployment rate but not on labour force participation in Australia and thus call for policies aimed at improving the adjustment mechanism in unemployment.     

Analysing convergence in Europe using the non-linear single factor model

We investigate convergence in European price level, unit labour cost, income and productivity data over the period of 1960–2006 using the non-linear time-varying coefficients factor model proposed by Philips and Sul (2007 Econometrica 75:1771–1855). This approach is extremely flexible in order to model a large number of transition paths to convergence. We find regional clusters in consumer price level data. GDP deflator data and unit labor cost data are far less clustered than CPI data. Income per capita data indicate the existence of three convergence clubs without strong regional linkages; Italy and Germany are not converging to any of those clubs. Total factor productivity data indicate the existence of a small club including fast-growing countries and a club consisting of all other countries.     

Testing for unemployment hysteresis in nonlinear heterogeneous panels: International evidence

Nonlinear behavior of unemployment is well documented in the literature, and thus linear unit root tests may not be appropriate in this case. This paper tests for hysteresis of unemployment for 29 OECD countries through the use of a new nonlinear panel unit root test developed by Ucar and Omay (2009). The test examines the joint null hypothesis of linearity and a unit root against the alternative hypothesis of nonlinear stationarity. Large power gains are achieved by both combining cross-sectional information with nonlinearities in the data. In addition, after the unit root null being rejected, we use a sequential panel selection method suggested by Chortareas and Kapetanios (2009) to classify the whole panel into a group of stationary countries and a group of non-stationary countries. The empirical findings show that the nonlinear panel test gives strong evidence in favor of the natural rate hypothesis of unemployment for 23 of 29 OECD countries, in contrast to those obtained by Chang's (2002) linear panel test that 17 countries display evidence of stationary unemployment.     

Hysteresis in the development of unemployment: the EU and US experience

We examine hysteresis in EU and US unemployment by panel unit root tests. First generation tests indicate that unemployment is stationary. Second generation tests show mixed results. Idiosyncratic components are stationary in the US. A unit root in the US common component depends on the starting point of the sample. While the common component is nonstationary over the whole period, it is mean-reverting after initial observations are dropped. Hysteresis in EU unemployment is attributed to idiosyncratic, but not to common components. The findings might reflect a different regulation of labour markets and a lower degree of migration in the EU.     

Convergence in West German Regional Unemployment Rates

Abstract. Differences in regional unemployment rates are often used to describe regional economic inequality. This paper asks whether changes in regional unemployment differences in West Germany are persistent over time. Understanding the persistency of regional unemployment differences helps us to assess how effective regional policy can be. While univariate tests suggest that changes in regional unemployment differences are persistent in West Germany, more powerful panel tests lend some support to the hypothesis that regional unemployment rates converge. However, these tests reveal a moderate speed of convergence at best. Because there is a structural break following the second oil crisis, we also use tests that allow for such a break. This provides evidence for both convergence and quick adjustment to an equilibrium distribution of regional unemployment rates that is, however, subject to a structural break.     

Asymmetry in the business cycle: Evidence from the Australian labour market

Cyclical asymmetry has been recognised as a non-linear phenomenon in recent studies examining unemployment rate time series. The probalistic structure of such time series is different during upswings and downswings and models should reflect this change in structure by incorporating non-linearities to allow for the switching in optimising behaviours between the different phases. In this paper we use a number of established and new tests for identifying nonlinearities of different types as they occur in first-differenced time series of the seasonally-adjusted monthly Australian aggregate and regional unemployment rates. After identifying whether nonlinearity of a particular form is present in a given time series, the appropriate non-linear or linear model is fitted and the model analysed for cyclical behaviour.     

Hysteresis versus natural rate in Taiwan's unemployment: Evidence from the educational attainment categories

This study examines the hysteresis hypothesis in unemployment for Taiwan's educational attainment categories. Both nonlinear dynamics and structural breaks in unemployment are applied in our examinations. The empirical results without structural changes show that the unemployment hysteresis hypothesis cannot be rejected in all educational attainment categories. After simultaneously incorporating nonlinear processes and smooth structural changes, we find that only the unemployment rate of junior college graduates reveals a mean reverting to the natural rate in the long-run, whereas all other series still support the hysteresis hypothesis. The results indicate that: i) the shocks have only temporary effects on the unemployment rate of the junior college graduates; ii) the labor or macroeconomic stabilization policies could have long lasting effects on unemployment rates of the other educational attainment categories; iii) the unemployment rates of low-skill labor are susceptible to the changes of economic or fiscal policies; and iv) practical and occupational training mechanisms should be implemented and strengthened in the higher education system to alleviate the increasingly serious problem of unemployment.     

Dynamic persistence in the unemployment rate of OECD countries

Previous studies use a variety of increasingly advanced unit root tests to determine whether Blanchard and Summers (1986) hysteresis theory of unemployment or the classical ‘natural’ rate theory of Friedman (1968) and Phelps (1967, 1968) is most relevant for a given country. However these tests all specify a unit root under the null hypothesis against a stationary alternative, such as in the paper by Lee and Chang (2008), making the two theories of unemployment mutually exclusive over the sample period. This paper moves away from this dichotomy by allowing for switches between hysteresis and the natural rate theory using the recently developed test of Leybourne, Kim and Taylor (2007). We find that in countries like the United Kingdom, the natural rate theory is detected in the post-World War Two period of stabilisation: the time leading up to the seminal works of Friedman and Phelps. Hysteresis is found over the First World War and Great Depression periods, and in the period from the 1970s; a time characterised by rising trade union power. We also compute numerical measures of persistence using grid-bootstrap estimates of the autoregressive parameter, following Hansen (1999).     

Structural differences across macroregions: an empirical investigation

Using a macro–micro econometric framework that allows studying the labour market dynamics, this paper offers an in-depth investigation of the structures of both national and macro regional labour markets in Italy. The simulation results reveal structural differences between regions in the short as well as the long run. Regional gaps represent one of the main components of the natural unemployment rate in Italy. The results may help regional and national policy makers in the European Union to formulate strategies tailored to the specific needs of regional labour markets.     

Persistent unemployment and co-ordination issues: an evolutionary perspective

Abstract. In this paper we look at unemployment as a phenomenon which reflects the co-ordination problems that characterize out-of-equilibrium processes of adjustment. The analysis carried out shifts the focus from structural factors to the economic process. It shows that unemployment cannot be satisfactorily explained – and policy interventions devised – by focusing only on specific characters of the technology or confining the analysis to structural factors concerning the labour market. The co-ordination mechanisms of adjustment processes rather than the fundamentals of the economy appear, in this light, as the main determinants of differences in unemployment trends in different economies; and monetary policy comes back to the center of the stage as an essential element of the working of these mechanisms. RID="*" ID="*" We thank anonymous referees for their very useful comments, and Elena Lega for the helpful support to the simulation analysis carried out. Correspondence to: J.-L. Gaffard     

New Labour at work: long-term unemployment and the geography of opportunity

New Labour has placed great faith in active labour market policiesto address problems of long-term unemployment and poverty. Thispaper considers the effectiveness of welfare-to-work programmesin light of persistent regional employment disparities withinthe UK. It is argued that the government has proceeded froma flawed analysis of the causes and magnitude of long-term unemployment,framing the issue in terms of ‘worklessness’ andneglecting demand-side concerns of job availability and jobquality.     

Europe vs America: Institutional hysteresis in a simple normative model

We show how the differences in US and European institutions can arise in a normative model. The paper focuses on the labor market and the government's decision to set unemployment benefits in response to an unemployment shock. The government balances insurance considerations with the tax burden of benefits and the possibility that they introduce adverse “incentive effects” whereby benefits increase unemployment. It is found that when an adverse shock occurs, benefits should be increased most when the adverse incentive effects of benefits are largest. Adjustment costs of changing benefits introduce hysteresis and can help explain why post-oil shock benefits remained high in Europe but not in the US. Desirable features of the model are that we obtain an asymmetry out of a symmetric environment and that the mechanism yielding hysteresis is both simple (requires the third derivative of the utility function to be non-negative) and self-correcting. Empirical evidence concerning the role of corporatism is discussed.     

Spatial analysis of urban growth in Spain, 1900–2001

The purpose of this paper is to improve the knowledge of the Spanish urban system. We study the evolution of population growth among the group of 722 municipalities included in the Spanish urban areas over the period 1900–2001. A spatial SUR model is estimated for Zipf’s law and shows the existence of two main phases: divergence (1900–1980) and convergence (1980–2001). Then, the cross-sectional distribution of urban population is characterized by means of nonparametric estimations of density functions and the growth process is modeled as a first-order stationary Markov chain. Spatial effects are finally introduced within the Markov chain framework using regional conditioning. This analysis shows a low interclass mobility, i.e., a high-persistence of urban municipalities to stay in their own class from one decade to another over the whole period, and the influence of the geographical environment on urban population dynamism. Previous versions of this paper were presented at the 45th Congress of the European Regional Science Association (Vrije Universiteit, Amsterdam, Netherlands, August 23–27, 2005) and at the International Workshop on Spatial Econometrics and Statistics (Rome, Italy, May 25–27, 2006). We would like to thank two anonymous referees, M. Bosker, P. Cheshire, A. Carrington, B. Fingleton, R. Guillain, E. Lopez-Bazo, J. Paelinck and the other participants of these meetings for their valuable comments. Coro Chasco acknowledges financial support from the Spanish Ministry of Education and Science SEJ2006-14277-C04-01. The usual disclaimers apply.     

Testing for hysteresis in unemployment an unobserved components approach

We suggest a new test for hysteresis in unemployment based on an unobserved components model. Observed unemployment rates are decomposed into a natural rate component and a cyclical component. The impact of lagged cyclical shocks on the current natural component is the measure of hysteresis. To identify the two components of unemployment, we assume that the cyclical compoentn is correlated with capacity utilization. The model is applied to U.S. and German data. We find no evidence of hysteresis in U.S. data. German unemployment rates exhibit substantial hysteresis. A shock of 1.0 percent to the current cyclical component permanently increases future German natural rates by about 0.5 percent. For both countries, natural rate shocks turn out to be an important impulse mechanism to explain movements in observed unemployment rates.