Michael Gerfin, "Parametric and Semiparametric Estimation of the Binary 
Response Model of Labour Market Participation", Journal of Applied 
Econometrics, Vol. 11, No. 3, 1996, pp. 321-340.

The paper uses two data sets. The Swiss data are included in the file
SWISS.ASC, which is zipped in gerfin-data.zip. 

The German data cannot be made available because of german data protection
laws. Interested researchers will need to sign a data user contract with
the DIW first (address below). Once this contract is signed the data can
be obtained from the author (e-mail gerfin@vwi.unibe.ch). 

  DIW (Deutsches Institut fuer Wirtschaftsforschung)
  Koenigin-Luise-Str 5
  D-14195 Berlin
  Tel +49 30 89789-281
  Fax +49 30 89789-200
  e-mail soepmail@diw-berlin.de

Contents of SWISS.ASC:

The file contains 7 variables (872 obs) in the following order

  LFP Labour force participation dummy
  LNNLINC Log of nonlabour income
  AGE Age in years divided by 10
  EDUC Years of formal education
  NYC Number of young children (younger than 7)
  NOC Number of older children
  FOREIGN Dummy, = 1 if obs is not Swiss

This file is in DOS format, so Unix users must use "unzip -a".