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Count Your Hours: Returns to Education in Poland

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Author Info
Myck, Michal () (DIW Berlin)
Nicinska, Anna () (Warsaw University)
Morawski, Leszek () (Warsaw University)
Abstract

We show how significant may be the difference in the estimated returns to education in Poland conditional on the measure of wages used and the estimation approach applied. Combining information from two different Polish surveys from 2005 and taking advantage of the Polish microsimulation model (SIMPL) we demonstrate how different the results can be depending on whether we use net or gross, and monthly or hourly wages, and show how important selection correction is for the conclusion. While there are several papers examining the wage equation in Poland, so far none of them has provided a comprehensive analysis of the effects of using different methods and the issue of selection-correction in the estimation of the wage equation in Poland has not been examined in detail. Annual rates of return to university education for men vary from 6.7% to 9.7% and for women from 8.0% to 13.4% when we compare results using net monthly wages without correcting for labor market selection to those from a selection corrected specification using gross hourly wages. We also demonstrate that simple linear estimation performs relatively well for men in comparison to our preferred selection corrected estimation, while using family demographics as exclusion restrictions seems to be the "second best" in the case of the wage equation estimation for women.

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Paper provided by Institute for the Study of Labor (IZA) in its series IZA Discussion Papers with number 4332.

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Length: 33 pages
Date of creation: Jul 2009
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Handle: RePEc:iza:izadps:dp4332

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Related research
Keywords: returns to education; wage equation; selection models; instrumental variables;

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Find related papers by JEL classification:
J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
J21 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Labor Force and Employment, Size, and Structure

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    Other versions:
  2. Keane, Michael P. & Prasad, Eswar S., 2006. "Changes in the structure of earnings during the Polish transition," Journal of Development Economics, Elsevier, vol. 80(2), pages 389-427, August. [Downloadable!] (restricted)
    Other versions:
  3. Richard Blundell & Howard Reed & Thomas M. Stoker, 2003. "Interpreting Aggregate Wage Growth: The Role of Labor Market Participation," American Economic Review, American Economic Association, vol. 93(4), pages 1114-1131, September. [Downloadable!]
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  5. Heckman, James J, 1979. "Sample Selection Bias as a Specification Error," Econometrica, Econometric Society, vol. 47(1), pages 153-61, January. [Downloadable!] (restricted)
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  10. Hoynes, Hilary Williamson, 1996. "Welfare Transfers in Two-Parent Families: Labor Supply and Welfare Participation under AFDC-UP," Econometrica, Econometric Society, vol. 64(2), pages 295-332, March. [Downloadable!] (restricted)
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  14. Andrew Newell & Mieczyslaw W. Socha, 2007. "The Polish Wage Inequality Explosion," IZA Discussion Papers 2644, Institute for the Study of Labor (IZA). [Downloadable!]
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  15. Griliches, Zvi, 1977. "Estimating the Returns to Schooling: Some Econometric Problems," Econometrica, Econometric Society, vol. 45(1), pages 1-22, January. [Downloadable!] (restricted)
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