Lower Wage Rates for Less Hours ? : A simultaneous wage-hours model for Germany

Wolf, Elke

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URL: http://ub-madoc.bib.uni-mannheim.de/578
URN: urn:nbn:de:bsz:180-madoc-5783
Document Type: Working paper
Year of publication: 2000
The title of a journal, publication series: None
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Classification: JEL: J31 J22 J24 ,
Subject headings (SWD): Deutschland <Westliche Länder> , Frauenarbeit , Lohn , Arbeitstag
Abstract: In this paper the impact of working hours on the gross hourly wage rate of West German women is analyzed. We use a simultaneous wage-hours model which takes into account the participation decision. First, our estimates show that the hourly wage rate is strongly affected by the working hours. In order to avoid any assumptions about the functional form, we estimate linear spline functions. Second, we detect different wage-hours profiles for specific groups of individuals. Despite these di¤erences, the wage reduction for jobs with less than 20 hours a week and for overtime hours turns out to be a robust result. However, the hourly wage rate of jobs with 20 to 38 hours does not differ significantly. Third, for West German women, the exogeneity assumption of working hours in the wage regression must be rejected if the wage-hours locus is assumed to be the same for all individuals. As a result of this the wage rate of full-time employees is overestimated in the standard OLS estimation.
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