Persistence in U.S. State Unemployment Rates: Errata and Extensions

Using panel unit root tests allowing for breaking deterministics, 2007 found that many U.S. state unemployment rates were stationary, a result at odds with the traditional view that unemployment rates are path‐dependent and subject to shocks that have permanent effects. 2009 extended the analysis to directly examine whether the series were fractionally integrated and reported that models with two breaks‐in‐mean do suggest many state unemployment rates were mean‐reverting. The purpose of this note is to correct an error contained in 2009 , which when modified, indicates that state unemployment rates were non‐stationary processes well‐characterized by hysteresis.     

Jobless Recovery: A Time Series Look at the United States

We use vector auto regression models controlling for log differences in gross domestic product (GDP), the unemployment rate, and changes in the unemployment rate to show that following a recession, the rate of decrease in the unemployment rate significantly slowed over time. Controlling for GDP growth rates, we find two structural breaks indicating weaker recoveries in the unemployment rate over time, i.e. recoveries that are increasingly jobless. The first break is in 1959, and the second is in 1984 coinciding with the usual timing of the Great Moderation. Using the 7.85% unemployment rate at the end of 2012 and assuming average annual recovery growth of 2%, the structural breaks imply an additional two full years are necessary to return to a historical long-run average of 5.5%. We empirically explore possible causes proposed in the literature including industry composition, participation rates and social benefits. Demographic shifts in the labor force and changing industry composition appear to be the strongest contributors to jobless recovery.     

PURCHASING POWER PARITY IN AFRICAN COUNTRIES: FURTHER EVIDENCE FROM FOURIER UNIT ROOT TESTS BASED ON LINEAR AND NONLINEAR MODELS

This paper examines the validity of purchasing power parity hypothesis for 33 African countries using recently developed Fourier unit root tests by Christopoulos and León‐Ledesma that account for the existence of multiple breaks in the real exchange rates. The results support the evidence of the PPP in 20 countries, showing that most of the real exchange rates in the selected countries are characterised by linear or nonlinear stationary around multiple temporary mean changes.     

Is the Gulf Cooperation Council an Optimum Currency Area?

This article applies the theory of Generalized Purchasing Power Parity (G‐PPP) to assess the potential for an optimum currency area (OCA) for the Gulf Cooperation Council (GCC) countries over the period 1973–2009. Utilizing a multivariate cointegration procedure that allows for up to two predetermined structural breaks, the results suggest that the GCC countries could form an OCA since macroeconomic conditions are in favor of forming an OCA, i.e., real exchange rates share common trends and the parameter stability test indicates that the G‐PPP relationship has been stable for the period analyzed. Moreover, the results suggest that the withdrawal of Oman and/or United Arab Emirates (UAE) from the union has no impact on forming the union. However, based on other OCA criteria, the results suggest that the OCA may be challenged.     

Investigating causality among unemployment,income and crime in Taiwan: evidence from the bounds test approach

This paper examines the long-run and causal relationships among unemployment, income and crime in Taiwan. The results clearly indicate that there is a long-run level equilibrium relationship among unemployment, income and total crime. There are also long-run relationships among unemployment, income and theft and among unemployment, income and economic fraud. The causality test results from the ECM-VAR and level VAR models indicate that there is a neutral relationship among unemployment, income and total crime, and a neutral relationship among unemployment, income and all three categories of crime. It is concluded that there is no strong evidence in favor of the unemployment-led crime (ULC) or the crime-led unemployment (CLU) hypotheses in Taiwan.     

The link between unemployment and labor force participation rates in Japan: A regional perspective

This paper explores the co-integrating relationship between unemployment and the labor force participation rate in Japan from a regional perspective. The univariate co-integration tests indicate that the “no co-integration” hypothesis cannot be rejected in Northern-Kanto, Hokuriku and Kyusyu. Because the univariate co-integration approach might suffer from low power we employed a panel version of the co-integration test recently developed by Westerlund (2006) that also considers the possibility of multiple structural breaks in the level of individual co-integrating equations. The test results lend support for an overwhelmingly long-run relationship between the two variables across regions. Accordingly, this finding is not in line with the unemployment invariance hypothesis. As a result a nationally orientated employment policy aimed at improving the unemployment and labor force participation rates might be preferred over a region-specific employment policy in Japan.     

Unit Root Tests,Persistence, and the Unemployment Rate of the U.S. States

In this paper, we investigate the existence of infrequent shocks and the degree of persistence of U.S. state unemployment over the period 1976-2004. We first apply individual Lagrange multiplier (LM) unit root tests and fail to reject the hysteresis hypothesis in forty states. When two changes in level are incorporated, we again fail to reject the hysteresis hypothesis in forty states. Since individual unit root tests normally lack power, we employ the recently developed panel LM unit root tests with up to two changes in level. Only in this case are we able to reject the joint unit root hypothesis in favor of regime stationarity. Computation of half-lives through impulse-response functions indicates the high degree of persistence of U.S. state unemployment. These results contrast with the common belief among scholars that U.S. state unemployment is closer to the natural rate paradigm than to the hysteresis paradigm.     

Unemployment in Africa: A Fractional Integration Approach

This paper estimates long‐memory models to analyse the stochastic behaviour of unemployment in eleven African countries (Botswana, Ethiopia, Ghana, Kenya, Malawi, Mauritius, Nigeria, Senegal, South Africa, Tanzania and Zambia) from the 1960s until 2010. The empirical results provide very strong evidence of lack of mean reversion in all series under examination. This suggests that hysteresis models are the most relevant for the African experience (not surprisingly, given the rigidities in their labour markets). Therefore in such countries shocks hitting the unemployment series will have permanent effects, and policy makers should take appropriate action to reverse the effects of negative shocks.     

CYCLICAL UNEMPLOYMENT AND CYCLICAL OUTPUT: AN ESTIMATION OF OKUN'S COEFFICIENT FOR SOUTH AFRICA

Persistently high unemployment in South Africa, especially in the face of improved economic conditions since 1994, begs the question: Does unemployment in South Africa respond to changes in output? Okun's law refers to the inverse relationship that exists between cyclical output and cyclical unemployment. This paper estimates Okun's coefficient for the South African economy, using annual data from 1970‐2005. Output and unemployment are decomposed into their trend and cyclical components, using a variety of detrending methods. The presence of structural breaks in Okun's relationship is also investigated, while cointegration analysis was also considered. Evidence of a statistically significant relationship between cyclical output and cyclical unemployment are found in both symmetric (estimates range from ?0.77 to ?0.16) and asymmetric (estimates range from ?0.77 to ?0.18) specifications of Okun's law, irrespective of the detrending technique. However, cyclical unemployment constitutes only a relatively small fraction of total (observed) unemployment, which implies that a more expansionary macroeconomic policy stance might only have a limited impact on total unemployment in South Africa.     

Using Unemployment Rates as Instruments to Estimate Returns to Schooling

I use state unemployment rates during a person's teenage years to estimate the returns to schooling. A higher unemployment rate reduces the opportunity costs of attending school. Using the same 1980 Census data set that Angrist and Krueger (1991) use, I also estimate returns to schooling with a modified version of their quarter‐of‐birth instrument. The estimates from the two‐stage least squares (2SLS) model using the unemployment rate and the model using the quarter‐of‐birth instruments are almost identical. In addition, these 2SLS estimates are larger than the ordinary least squares (OLS) estimates, supporting this counterintuitive, yet prevalent, result in the literature.     

The Equilibrium Rate of Unemployment in the Netherlands

The rise in unemployment in the 1970s and its subsequent persistence have challenged the conventional wisdom embodied in the standard Phillips curve, namely that equilibrium unemployment is fairly constant over time. This paper attempts to explain the apparent non-constancy of equilibrium unemployment by developing and estimating a structural model in which equilibrium unemployment is endogenous and results from the interactions of wage bargaining and the price and employment determination of firms. We find that the three major determinants of equilibrium unemployment are tax rates, the replacement rate and the real interest rate. The rise in unemployment in the 1970s and early 1980s was mainly due to a rise in the first two factors. That equilibrium unemployment remained high when tax rates and the replacement rate were reduced in the 1980s and early 1990s is attributed to the rise in real interest rates during this period.     

Real Exchange Rate Dynamics in the Asian Economies: Can Regime Shifts Explain Purchasing Power Parity Puzzles?

Abstract

We show that the strong version of the purchasing power parity (PPP) hypothesis holds in most of the US dollar real exchange rates using cointegration method that accounts for breaks in the models. The break dates in seven of the Asian currencies coincide with the two rounds of currency depreciation recorded during the 1997–1998 financial crises. We obtain a mean half-life estimate of about 10 months for PPP to converge to its long-run equilibrium level. Our confidence intervals based on persistence profile approach for the half-lives is much narrower than previous evidence might indicate. Taken together, these results show that mean reversion is stronger than commonly thought.     

Uncovering the Truth about Chinese Urban Unemployment Rates: 2005–2012

Using China Urban Household Survey data from 2005 to 2012, the present paper examines the changing pattern of China's urban unemployment rates. The paper shows that the annual urban unemployment rates during 2005–2012 averaged approximately 8.5 percent, as opposed to the official figure of approximately 4.1 percent, and despite the significant slowdown of GDP growth since 2008, the urban unemployment rates still exhibit a downward trend. This paper finds that continuous job creation in both the tertiary and the non‐state sectors helps explain the decreasing trend in unemployment rates. Meanwhile, the downward trend of the unemployment rates could also be explained by the fact that both the secondary industry and the state‐owned sector have destructed fewer jobs because of the execution of macroeconomic stimulus policies since 2008.     

TESTING FOR STATIONARITY OF INFLATION RATES WITH COVARIATES

This paper distinguishes between the stationarity and nonstationarity of inflation in 18 OECD countries through several unit root tests with covariates. These covariate tests are more powerful than the conventional ones through correlated covariates. Both unit root and stationarity null hypotheses are tested in this study. Our empirical results indicate that the efficient univariate unit root tests fail to reject the unit‐root hypothesis for 15 countries, whereas the covariate tests provide strong evidence in support of mean reversion in inflation for almost all countries. Overall, the findings unveil new evidence in favor of stationarity in international inflation. Policy implications on the empirical results are provided as well.     

Asymmetric behavior of unemployment rates: Evidence from the quantile covariate unit root test

Mixed results for unemployment dynamics are reported in many studies using linear or non-linear unit root tests. A possible explanation is that the literature focuses on the average behavior of unemployment and assumes that the speed of adjustment towards its long-run equilibrium is constant, regardless of the magnitudes and signs of shocks. This paper seeks to re-examine the dynamics of the unemployment rates in terms of shocks for 12 OECD countries. A newly developed quantile unit root test by Galvao (2009) is applied to show potential asymmetric responses of unemployment to shocks over various quantiles, depending on the size and sign of the shocks that hit the unemployment rate. Our results suggest that generally, the unemployment rates are not only stationary but also exhibit obvious asymmetric behavior, in the sense that in the lower quantiles, negative shocks with large absolute value tend to induce faster speed of adjustment towards the long-run equilibrium, while in the upper quantiles, large positive shocks do not, and hysteresis exists. These findings can explain why unemployment rates display the behavior of fast rises and slow falls.     

Industry specialization, diversification, churning, and unemployment in Chinese cities

This paper studies how industry specialization, diversification, and churning affect unemployment rates in Chinese cities. Using a city level panel data set from 1997 to 2006, we find that in contrast to the evidence from developed countries, industry diversity is positively and significantly associated with unemployment rates, possibly due to the high degree of industry churning during the sample period. We also find that the specialization of construction industry and wholesale and retail trade industry can significantly decrease unemployment rate, but specializing in finance industry increases unemployment rate. Urban growth, market maturity measured by the proportion of private sector employment, and human capital can decrease unemployment rate. The effect of industry structure on unemployment instability is also discussed.     

Unemployment in Latin America and the Caribbean

This study constructs a new data set on unemployment rates in Latin America and the Caribbean and then explores the determinants of unemployment. We compare different countries, finding that unemployment is influenced by the size of the rural population and that the effects of government regulations are generally weak. We also examine large, persistent increases in unemployment over time, finding that they are caused by contractions in aggregate demand. These demand contractions result from either disinflationary monetary policy or the defense of an exchange-rate peg in the face of capital flight. Our evidence supports hysteresis theories in which short-run changes in unemployment influence the natural rate.     

中国城市失业率--从出生组分析经济转型的影响

中国城市的失业率存在显著的差异,如果比较不同的教育群体,不同性别和不同出生组别的话。相对而言,在所有教育组内,年轻群组内存在比年老群组更高的失业率。年老群组在他们劳动生涯内,失业率长期维持在接近零的水平。然而对于年轻群组,情况大相径庭:失业率差异增大。对于年轻群组而言,失业率和教育程度呈现反向关系:大学以上教育依然维持最低失业率水平。性别的失业率差距随着教育程度的降低而扩大:最大差距出现在低等教育组。除此以外,出生组别之间的失业率差异随着年龄增加而扩大,而且这种差距也是在低等教育女性组最为明显,这也意味着低等教育女性在劳动力市场的需求处于极为不利的地位。我们对于这种群组之间的失业率差距提供了解释:国有企业高度集中导致了非常低的失业率,而经济转型过程中国有企业比重的下降伴随着劳动力市场自由化程度的提高, 带来了较高的失业率。     

Job Creation and Destruction in South Africa

Analysts of the South African labour market have mainly used household surveys to analyse the labour market. It has been more difficult to explore the labour demand of firms, as a result of limited data availability. We use the Quarterly Employment Statistics survey, an enterprise survey conducted by Statistics South Africa, to explore how South African firms create and destroy jobs, thereby shedding light on many of the policy questions that are relevant in a high unemployment society like South Africa. We find that job creation and destruction rates are similar to those found in Organisation for Economic Co‐operation and Development countries. There is little evidence that labour legislation creates rigidities that prevent firms from hiring or firing workers. We also find that larger firms are better net creators of jobs than small firms and that net job creation rates are negative in manufacturing. Our research has important policy implications – particularly for the South African National Planning Commission's 2030 plan, in which new jobs are envisaged to come mainly from small‐ and medium‐sized firms. Our research suggests that this scenario is not likely without changes to policy or legislation.