IDEAS home Printed from
MyIDEAS: Login to save this paper or follow this series

Modelling Unobserved Heterogeneity in Discrete Choice Models of Labour Supply

  • Pacifico, Daniele

The aim of this paper is to analyse the role of unobserved heterogeneity in structural discrete choice models of labour supply for the evaluation of tax-reforms. Within this framework, unobserved heterogeneity has been estimated either parametrically or nonparametrically through random co- efficient models. Nevertheless, the estimation of such models by means of standard, gradient-based methods is often difficult, in particular if the number of random parameters is high. Given the relative big set of pa- rameters that enter in labour supply models, many researchers have to reduce the role of unobserved heterogeneity by specifying only a small set of random coefficients. However, this simplification affects the estimated labour supply elasticities, which then might hardly change when unob- served heterogeneity is considered in the model. In this paper, we present a new estimation method based on an EM algorithm that allows us to fully consider the effect of unobserved heterogeneity nonparametrically. Results show that labour supply elasticities do change significantly when the full set of coefficients is assumed to be random. Moreover, we analyse the behavioural effects of the introduction of a working-tax credit scheme in the Italian tax-benefit system and show that the magnitude of labour supply reactions and post-reform income distribution do change signifi- cantly when unobserved heterogeneity is fully considered.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL:
File Function: original version
Download Restriction: no

File URL:
File Function: revised version
Download Restriction: no

File URL:
File Function: revised version
Download Restriction: no

Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 19030.

in new window

Date of creation: 15 Nov 2009
Date of revision:
Handle: RePEc:pra:mprapa:19030
Contact details of provider: Postal: Schackstr. 4, D-80539 Munich, Germany
Phone: +49-(0)89-2180-2219
Fax: +49-(0)89-2180-3900
Web page:

More information through EDIRC

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

as in new window
  1. 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.
  2. Baldini Massimo & Pacifico Daniele, 2009. "The Recent reforms of the Italian Personal Income Tax: Distributive and Efficiency Effects," Rivista italiana degli economisti, Società editrice il Mulino, issue 1, pages 191-218.
  3. John Creedy & Guyonne Kalb, 2005. "Discrete Hours Labour Supply Modelling: Specification, Estimation and Simulation," Journal of Economic Surveys, Wiley Blackwell, vol. 19(5), pages 697-734, December.
  4. Blundell, Richard & Macurdy, Thomas, 1999. "Labor supply: A review of alternative approaches," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 27, pages 1559-1695 Elsevier.
  5. M. Keane & R. Mofitt, 1995. "A Structural Model of Multiple Welfare Program Participation and Labor Supply," Working Papers 95-4, Brown University, Department of Economics.
  6. Vermeulen, F.M.P. & Bargain, O. & Beblo, M. & Beninger, D. & Blundell, R. & Carrasco, R. & Chiuri, M-C. & Laisney, F. & Lechene, V. & Moreau, N. & Myck, M. & Ruiz-castillo, J., 2006. "Collective models of labor supply with nonconvex budget sets and nonparticipation : A calibration approach," Other publications TiSEM 8dec6b88-3dce-460f-ab9b-2, Tilburg University, School of Economics and Management.
  7. Bargain, Olivier, 2005. "On Modeling Household Labor Supply with Taxation," IZA Discussion Papers 1455, Institute for the Study of Labor (IZA).
  8. Brewer, Mike & Duncan, Alan & Shephard, Andrew & Suarez, Maria Jose, 2006. "Did working families' tax credit work? The impact of in-work support on labour supply in Great Britain," Labour Economics, Elsevier, vol. 13(6), pages 699-720, December.
  9. Lennart Flood & Nizamul Islam, 2005. "A Monte Carlo evaluation of discrete choice labour supply models," Applied Economics Letters, Taylor & Francis Journals, vol. 12(5), pages 263-266.
  10. Peter Haan & Arne Uhlendorff, 2013. "Intertemporal labor supply and involuntary unemployment," Empirical Economics, Springer, vol. 44(2), pages 661-683, April.
  11. Arthur van Soest, 1995. "Structural Models of Family Labor Supply: A Discrete Choice Approach," Journal of Human Resources, University of Wisconsin Press, vol. 30(1), pages 63-88.
  12. Richard Blundell & Alan Duncan & Julian McCrae & Costas Meghir, 2000. "The labour market impact of the working families’ tax credit," Fiscal Studies, Institute for Fiscal Studies, vol. 21(1), pages 75-103, March.
  13. Wrohlich, Katharina, 2006. "Labor Supply and Child Care Choices in a Rationed Child Care Market," IZA Discussion Papers 2053, Institute for the Study of Labor (IZA).
  14. Greene, William H. & Hensher, David A., 2003. "A latent class model for discrete choice analysis: contrasts with mixed logit," Transportation Research Part B: Methodological, Elsevier, vol. 37(8), pages 681-698, September.
  15. John Creedy & Guyonne Kalb & Rosanna Scutella, 2006. "Income distribution in discrete hours behavioural microsimulation models: An illustration," Journal of Economic Inequality, Springer, vol. 4(1), pages 57-76, April.
  16. William Greene, 2001. "Fixed and Random Effects in Nonlinear Models," Working Papers 01-01, New York University, Leonard N. Stern School of Business, Department of Economics.
  17. Peter Haan, 2006. "Much ado about nothing: conditional logit vs. random coefficient models for estimating labour supply elasticities," Applied Economics Letters, Taylor & Francis Journals, vol. 13(4), pages 251-256.
  18. Chiappori, P.A. & Ekeland, I., 2006. "The micro economics of group behavior: General characterization," Journal of Economic Theory, Elsevier, vol. 130(1), pages 1-26, September.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:pra:mprapa:19030. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Ekkehart Schlicht)

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.