This paper discusses the evaluation problem using observational data when the timing of treatment is an outcome of a stochastic process. We show that, without additional assumptions, it is not possible to estimate the average treatment effect and treatment on the treated. It is, however,...

Do employees benefit from worker representation on corporate boards? Economists and policymakers are keenly interested in this question – especially lately, as worker representation is widely promoted as an important way to ensure the interests and views of the workers. To investigate this...

We provide a framework for setting congestion charges that reflect emission and congestion externalities and policy responses, such as vehicle ownership, driving, and residential sorting. Using Swedish administrative microdata, we identify these responses by exploiting a temporary exemption for...