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Are Unit Root Tests Useful in the Debate over the (Non)Stationarity of Hours Worked?

Listed author(s):
  • Amélie Charles

    (Audencia Recherche - Audencia)

  • Olivier Darné

    ()

    (LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - UN - Université de Nantes)

  • Fabien Tripier

    (LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - UN - Université de Nantes)

This article compares the performances of some non-stationarity tests on simulated series, using the business-cycle model of Chang et al. (2007) [Y. Chang, T. Doh, F. Schorfheide, (2007). Non-stationary Hours in a DSGE Model. Journal of Money, Credit and Banking 39, 357-1373] as data generating process. Overall, Monte Carlo simulations show that the efficient unit root tests of Ng and Perron (2001) [Ng, S., Perron, P. (2001). Lag length selection and the construction of unit root tests with good size and power. Econometrica 69, 1519-1554] are more powerful than the standard non-stationarity tests (ADF and KPSS). More precisely, these efficient tests are able to reject frequently the unit-root hypothesis on simulated series using the best specification of business-cycle model found by Chang et al. (2007), in which hours worked are stationary with adjustment costs.

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Paper provided by HAL in its series Working Papers with number hal-00527122.

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Date of creation: 18 Oct 2010
Handle: RePEc:hal:wpaper:hal-00527122
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