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Union selection effects - some inconsistent models

Author

Listed:
  • Martin Wittenberg

    (DataFirst, University of Cape Town)

Abstract

We show that some of the models which have been used in the South African literature to estimate union selection effects are logically inconsistent. This is a much more serious problem than a failure to identify the coefficient. It implies that the model cannot be true in any possible state of the world. Unfortunately the offending specification is becoming entrenched in the literature.

Suggested Citation

  • Martin Wittenberg, 2014. "Union selection effects - some inconsistent models," SALDRU Working Papers 133, Southern Africa Labour and Development Research Unit, University of Cape Town.
    • Handle: RePEc:ldr:wpaper:133
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    More about this item

    Keywords

    Unions; Selections;

    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • J51 - Labor and Demographic Economics - - Labor-Management Relations, Trade Unions, and Collective Bargaining - - - Trade Unions: Objectives, Structure, and Effects

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