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Cointegration and Asymmetric Adjustment between Output and Unemployment: an Application to the U.S. Economy


  • Elisabeth T. Pereira

    () (GOVCOPP, Departamento de Economia e Gestão Industrial, Universidade de Aveiro)

  • J. P. Cerdeira Bento

    () (GOVCOPP, Departamento de Economia e Gestão Industrial, Universidade de Aveiro)

  • Ricardo Fernando Silva

    () (Departamento de Economia e Gestão Industrial, Universidade de Aveiro)


This paper focuses on the properties of the adjustment between the real output and the unemployment rate for the U.S. economy in the period from 1975 to 2006. It starts by checking the order of integration of the two series and then tests for the presence of asymmetry in the Okun’s law relationship through a cyclical equation, a first differences equation and an ADL(p,q). Using the threshold cointegration approach this study also accounts for the possible existence of a long-run equilibrium relationship and it is ability to test for the asymmetric adjustment hypothesis. It is found that Okun’s coefficient ranges between -0.41 and -0.59, being the latter estimated by the cointegrating equation. Furthermore, the unemployment rate behaves differently along the business cycle and increases faster in recessions than it recovers in expansions. A long-run equilibrium relationship is established where adjustment is made asymmetrically. Positive deviations away from equilibrium are corrected slightly faster than negative ones. Our explanation concerns the higher speed of flows within the labor market during a recession than during an expansion which may also be related to the existence of nominal rigidities in the US economy that causes imperfectly flexible prices.

Suggested Citation

  • Elisabeth T. Pereira & J. P. Cerdeira Bento & Ricardo Fernando Silva, 2009. "Cointegration and Asymmetric Adjustment between Output and Unemployment: an Application to the U.S. Economy," Working Papers de Economia (Economics Working Papers) 52, Departamento de Economia, Gestão e Engenharia Industrial, Universidade de Aveiro.
  • Handle: RePEc:ave:wpaper:522009

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    References listed on IDEAS

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    Cited by:

    1. Phiri, Andrew, 2014. "Re-evaluating Okun's law in South Africa: A nonlinear co-integration approach," MPRA Paper 57398, University Library of Munich, Germany.

    More about this item


    Okun’s Law; Threshold Cointegration; Asymmetric Adjustment; Monte Carlo Simulations; U.S. Economy;

    JEL classification:

    • E30 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - General (includes Measurement and Data)
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes

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