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Separability of Duration Dependence and Unobserved Heterogeneity

  • Turon, Hélène


    (University of Bristol)

Mixed proportional hazard models are commonly used to estimate duration dependence and unobserved heterogeneity in unemployment exit rates. Some strong assumptions are made in this framework, i.e. that the various influences on the individual unemployment exit rate are separable. The model we use in this paper allows for both the individual duration dependence pattern and the inflow composition to exhibit cyclical variations, thereby relaxing two of the three separability assumptions. The aim of this paper is to assess the validity of the third separability assumption, namely that the duration dependence pattern is the same for all individuals.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 754.

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Length: 36 pages
Date of creation: Apr 2003
Date of revision:
Handle: RePEc:iza:izadps:dp754
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  1. Abbring, Jaap H & van den Berg, Gerard J & van Ours, Jan C, 1995. "The Anatomy of Unemployment Dynamics," CEPR Discussion Papers 1202, C.E.P.R. Discussion Papers.
  2. Abbring, Jaap H & van den Berg, Gerard J & van Ours, Jan C, 2001. "Business Cycles and Compositional Variation in U.S. Unemployment," Journal of Business & Economic Statistics, American Statistical Association, vol. 19(4), pages 436-48, October.
  3. Bruce D. Meyer, 1988. "Unemployment Insurance And Unemployment Spells," NBER Working Papers 2546, National Bureau of Economic Research, Inc.
  4. Stephen Machin & Alan Manning, 1998. "The Causes and Consequences of Long-Term Unemployment in Europe," CEP Discussion Papers dp0400, Centre for Economic Performance, LSE.
  5. repec:oup:restud:v:58:y:1991:i:4:p:733-53 is not listed on IDEAS
  6. Berg, G.J. & Ours, J.C., 1993. "Unemployment dynamics and duration dependence," Serie Research Memoranda 0022, VU University Amsterdam, Faculty of Economics, Business Administration and Econometrics.
  7. Jackman, Richard & Layard, Richard, 1991. "Does Long-term Unemployment Reduce a Person's Chance of a Job? A Time-Series Test," Economica, London School of Economics and Political Science, vol. 58(229), pages 93-106, February.
  8. Kalwij, Adriaan, 2001. "Individuals' Unemployment Durations over the Business Cycle," IZA Discussion Papers 369, Institute for the Study of Labor (IZA).
  9. Heckman, James & Singer, Burton, 1984. "A Method for Minimizing the Impact of Distributional Assumptions in Econometric Models for Duration Data," Econometrica, Econometric Society, vol. 52(2), pages 271-320, March.
  10. Baker, Michael, 1992. "Unemployment Duration: Compositional Effects and Cyclical Variability," American Economic Review, American Economic Association, vol. 82(1), pages 313-21, March.
  11. van den Berg, G. & van Ours, J.C., 1996. "Unemployment dynamics and duration dependence," Other publications TiSEM 4374742f-8d86-458d-9ab3-6, Tilburg University, School of Economics and Management.
  12. Arulampalam, Wiji & Booth, Alison L & Taylor, Mark P, 2000. "Unemployment Persistence," Oxford Economic Papers, Oxford University Press, vol. 52(1), pages 24-50, January.
  13. repec:oup:restud:v:61:y:1994:i:3:p:417-34 is not listed on IDEAS
  14. Abbring, J.H. & van den Berg, G. & van Ours, J.C., 2002. "The anatomy of unemployment dynamics," Other publications TiSEM 539d10a7-be00-4a8e-9c9c-9, Tilburg University, School of Economics and Management.
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