I investigate causal machine learning (CML) methods to estimate effect heterogeneity by means of conditional average treatment effects (CATEs). In particular, I study whether the estimated effect heterogeneity can provide evidence for the theoretical labour supply predictions of Connecticut's...

The public economics, environmental, transportation and urban economics literature applies different labor supply approaches when studying economic or planning instruments. Some studies assume that working hours are endogenous while the number of workdays is given, whereas others model only...

We analyse a model in which families may either be “traditional” single-earner with caring for the child at home or “modern” double-earner households using market child care. Family policies may favour either the one or the other group, like market care subsidies vs. cash for care....

We estimate the labor force participation (LFP) response to the introduction of means-tested minimum pensions in the UK through the Old-Age Pension Act (OAP) of 1908. The OAP was a major social policy intervention and the first one to universally target older workers in a time of very limited...

We analyse the effect of a mandatory kindergarten for four-year-old children on mothers' labour supply in Switzerland. Since education policy is regulated on a federal level, we exploit spatial variation as well as staggered implementation. Using a difference-in-differences approach, we find an...

This paper studies how the statutory right to work part-time affects mothers' post-birth labor market outcomes and higher-order fertility. I use a differences-in-differences design to investigate the introduction of a German law in 2001 that grants the right to work part-time to employees...

We analyse the effect of a mandatory kindergarten for four-year-old children on maternal labour supply in Switzerland by using two quasi-experiments: Firstly, we use a large administrative dataset and apply a non-parametric Regression Discontinuity Design to evaluate the effect of the reform at...

Using information on desired and actual hours of work, we formulate a discrete choice model of constrained labor supply, where involuntary unemployment as well as over- and underemployment are modelled in a theoretically consistent way. Using data from the German Socio-Economic Panel (SOEP) and...