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Academy of Economic Studies Bucharest Doctoral School of Finance and Banking DISSERTATION PAPER OUTPUT AND UNEMPLOYMENT DYNAMICS IN ROMANIA Student: SINCA FLORIN EUGEN Supervisor: Professor MOISA ALTAR

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2 Presentation content 1.Introduction 2.The importance of output and unemployment dynamics in Romania 3.Theoretical connection between output and unemployment 4.Unit root tests 5.Estimation of ARIMA (p,1,q) models for output 6.Estimation of ARIMA (p,1,q) models for unemployment rate 7.Bivariate analysis – Granger causality tests 8.A VAR analysis of the joint evolution of output and unemployment 9.Estimating Okun’s coefficient using dynamic OLS 10.Conclusions

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3 Output and unemployment dynamics is a subject of intense macroeconomic importance. It has been analyzed both in univariate in bivariate models: Campbell and Mankiw (1987) Blanchard and Quah (1989) Evans (1989) Weber (1995) Leon-Ledesma and McAdam (2003) 1. Introduction

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4 2. The importance of output and unemployment dynamics in Romania as a present candidate and future member of the European Union Romania must undertake labour market reforms unemployment rate (7.2 % in 2003) is currently lower than EU average, but long unemployment duration (24.1 months during the third quarter of 2003) is a major problem and creates the image of a stagnant pool for Romanian unemployment Romania has to pursue high and constant economic growth rates and in this context shocks may affect both unemployment and output it is important to maintain an economic growth of 5 % in 2004 and 2005 without deteriorating labour market equilibriums

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5 3. Theoretical connection between output and unemployment Following Blanchard and Fisher (1989), the relation between output and labour is given by the production function: (1) (2) equation (1) gives the straight relation between output and labour and not between output and unemployment labour force is represented by the total number of employees in the economy and in some cases the connection between the number of employees and the unemployment rate is weak if we consider the existence of a negative relation between the total number of employees and the unemployment rate, then there is a negative relation between output and unemployment rate

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This negative relation between cyclical fluctuations in output and the level or the change of unemployment rate is known as Okun’s Law Okun’s Law says that an increase of 3 % in output over its normal growth rate over a year leads to an increase of 2 % in employment and a decrease of 1 % in the unemployment rate

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7 4. Unit root tests The variables of this econometric analysis are: industrial production index, denoted as output (IPI, monthly observations 1993:01 – 2003:12, seasonally adjusted) unemployment rate (UNR, monthly observations 1993:01 – 2003:12, seasonally adjusted)

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8 Macroeconomic variablepa0a0 γγ + 1Conclusions Industrial production index (IPI), full sample (1.696) (-1.694) 0.947I (1) Unemployment rate (UNR), full sample (1.985) (-2.067) 0.955I (1) Unemployment rate (UNR), 1993:01 – 2001: (3.308) (-3.368) 0.942I (0) Macroeconomic variableKPSS statisticConclusions Industrial production index (IPI), full sample 0.237I (0) Unemployment rate (UNR), full sample 0.113I (0) Unemployment rate (UNR), 1993:01 – 2001: I (0) RESULTS OF THE ADF TEST RESULTS OF THE KPSS TEST (3)

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9 The long-run impulse response represents the response of IPI t+i to an innovation at time t, for large i and is given by: (4) (6) (5) (7) (8) 5. Estimation of ARIMA (p,1,q) models for output

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10 The estimated ARMA (2,2) model for the first difference of output, having standard errors in parentheses, is: (9) Inverted AR roots are –0.32 ± 0.81i Inverted MA roots are –0.17 ± 0.82i Akaike information criterion is Schwarz criterion is Adjusted R-squared is Ljung-Box Q-statistics are: Q(8)=1.938 (0.747) ; Q(16)= (0.107) ; Q(34)= (0.090) Breusch-Godfrey Serial Correlation LM Test for 10 lags is (0.309) The long-run impulse response is implying that an innovation of 1 percent in output leads to a revision of the forecast in the long-run by an amount less than 1 percent.

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11 6. Estimation of ARIMA (p,1,q) models for unemployment rate x t is a dummy variable that takes value 1 in 2002:01 and 0 in all other periods The estimated model for the first difference of unemployment rate, having standard errors in parentheses, is AR (1): (10) (11) Inverted AR root is 0.55 Akaike information criterion is –0.059 and Schwarz criterion is –0.015 Adjusted R-squared is Ljung-Box Q -statistics are: Q(8)=2.786 (0.904) ; Q(16)= (0.395) ; Q(34)= (0.590) Breusch-Godfrey Serial Correlation LM Test for 10 lags is (0.875)

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12 The sharp increase of the unemployment rate at the beginning of 2002 had only a temporary effect JanFebMarAprMayJuneJulyAugSeptOctNovDec Δ unemployment increase in January 2002 and the subsequent effects according to the estimated AR (1) model

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13 Null hypotheses Lags number F-statProbF-statProbF-statProbF-statProbF-statProb ΔUNR does not Granger cause ΔIPI ΔIPI does not Granger cause ΔUNR Bivariate analysis – Granger causality tests Granger causality tests between output growth and unemployment growth, full sample 1993:01 – 2003:12 No causality between output and unemployment for the full sample No causality between unemployment and output for the full sample

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14 Null hypotheses Lags number F-statProbF-statProbF-statProbF-statProbF-statProb ΔUNR does not Granger cause ΔIPI ΔIPI does not Granger cause ΔUNR Granger causality tests between output growth and unemployment growth, shorter sample 1993:01 – 2001:12 There is a weak causality between unemployment and output with two lags.

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15 8. A VAR analysis of the joint evolution of output and unemployment Impulse response functions

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16 PeriodOutput growthUnemployment growth Variance decomposition for output growth PeriodOutput growthUnemployment growth Variance decomposition for unemployment growth

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17 9. Estimating Okun’s coefficient using dynamic OLS Output gap: Cyclical unemployment rate: An autoregressive-distributed lag model is estimated for the cyclical unemployment rate: The impact of a change in output gap on cyclical unemployment rate in the long-run is given by: (12) (13) (14) (15)

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18 Potential output and natural unemployment rate are determined by Hodrick Prescott filter, using the smoothing parameters: 14,400 ; 10,000 and 40,000. Okun’s coefficient is estimated for the full sample 1993:01 – 2003:12 and also for the shorter sample 1993:01 – 2001:12. There are no important differences between these estimates and the value of Okun’s coefficient lies between – and –

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Conclusions considering the results of the unit root tests and the estimated AR (1) model, the hysteresis hypothesis is rejected for the unemployment rate an output innovation of 1 percent leads to a revision of output forecast in the long-run of percents there is a weak Granger causality between unemployment growth and output growth with a lag of two months the results of the estimated VAR illustrate a negative relation between output and unemployment attributed to Okun’s law according to VAR results, output presents a higher degree of persistence than unemployment; after ten months 1 % of the output initial innovation is still present in output, but only 0.62 % of the unemployment initial innovation is still present in unemployment variance decomposition for the estimated VAR shows that output explains a larger part of unemployment variance, while unemployment explains only a small part of output variation the estimated Okun’s coefficient is –0.120

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20 Apel, Mikael; Hansen, Jan and Hans Lindberg (1996) – “Potential Output and Output Gap” ; Sveriges Riksbank Economic Review 3, Blanchard, Olivier and Lawrence Summers (1986) – “Fiscal Increasing Returns, Hysteresis, Real Wages and Unemployment” ; NBER Working Paper No Blanchard, Olivier and Stanley Fisher (1989) – “Lectures on Macroeconomics” ; MIT Press, Cambridge. Blanchard, Olivier and Danny Quah (1989) – “The Dynamic Effects of Aggregate Demand and Supply Disturbances”; The American Economic Review 79, 4 (Sep), Blanchard, Olivier (1991) – “Wage Bargaining and Unemployment Persistence” ; Journal of Money, Credit and Banking 23, 3 (Aug), Blanchard, Olivier and Pedro Portugal (2000) – “What Hides Behind an Unemployment Rate: Comparing Portuguese and U.S. Labour Markets”. Blanchard, Olivier (2004) – “Explaining European Unemployment”. Brunello, Giorgio (1990) – “Hysteresis and the Japanese Unemployment Problem: A Preliminary Investigation” ; Oxford Economic Papers 42, 3 (Jul), References

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21 Campbell, John Y. and N. Gregory Mankiw (1987a) – “Are Output Fluctuations Transitory ?” ; Quarterly Journal of Economics 102, 4 (Nov), Campbell, John Y. and N. Gregory Mankiw (1987b) – “Permanent and Transitory Components in Macroeconomic Fluctuations” ; The American Economic Review (May), Campbell, John Y. and Pierre Perron (1990) – “Pitfalls and Opportunities: What Macroeconomists Should Know About Unit Roots” ; NBER Technical Working Paper No 100. Cerra, Valerie and Sweta Chaman Saxena (2000) – “Alternative Methods of Estimating Potential Output and the Output Gap: An Application to Sweden” ; IMF Working Paper. Cheung, Yin-Wong and Menzie David Chinn (1996) – “Deterministic, Stochastic, and Segmented Trends in Aggregate Output: A Cross-Country Analysis” ; Oxford Economic Papers 48, 1 (Jan), Coe, David T. and John McDermott (1995) – “Does the Gap Model Work in Asia ?” ; IMF Staff Papers 44, 1 (March), Dowrick, Steve (2003) – “Ideas and Education: Level or Growth Effects ?” ; NBER Working Paper No Enders, Walter (1995) – “Applied Econometric Time Series” ; John Wiley & Sons, Inc. Evans, George W. (1989) – “Output and Unemployment Dynamics in the United States: ” ; Journal of Applied Econometrics 4, 3 (Jul.-Sep), European Commission (2003) – “2003 Regular Report on Romania’s Progress Towards Accession”. Friedman, Benjamin M. and Michael L. Wachter (1974) – “Unemployment: Okun’s Law, Labour Force, and Productivity” ; Review of Economics and Statistics 56, 2 (May),

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22 Gordon, Robert J. and Peter K. Clark (1984) – “Unemployment and Potential Output in the 1980s” ; Brookings Papers on Economic Activity 2, 537 – 568. Gordon, Robert J. (1995) – “Is There a Tradeoff Between Unemployment and Productivity Growth ?” ; NBER Working Paper No Hamilton, James D. (1994) – “Time Series Analysis” ; Princeton University Press, Princeton, New Jersey. Leon-Ledesma, Miguel and Peter McAdam (2003) – “Unemployment, Hysteresis and Transition” ; European Central Bank Working Paper No 234. Murphy, Kevin M. and Robert Topel (1997) – “Unemployment and Nonemployment”; The American Economic Review 87, 2, (May), Pindyck, Robert S. and Daniel L. Rubinfeld (1998) – “Econometric Models and Economic Forecasts” ; Irwin / McGraw-Hill. Proietti, Tommaso; Musso, Alberto and Thomas Westermann (2002) –“Estimating Potential Output and the Output Gap for the Euro Area: a Model-Based Production Function Approach” ; European University Institute Working Paper ECO No 2002/9. Rudebusch, Glenn D. (1993) – “The Uncertain Unit Root in Real GDP” ; The American Economic Review 83, 1 (March), Strazicich, Mark C.; Tieslau, Margie and Junsoo Lee (2001) – “Hysteresis in Unemployment ? Evidence from Panel Unit Root Tests with Structural Change”. Weber, Christian E. (1995) – “Cyclical Output, Cyclical Unemployment, and Okun’s Coefficient: A New Approach” ; Journal of Applied Econometrics 10, 4 (Oct-Dec),

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