We show that the OLS and fixed‐effects (FE) estimators of the popular difference-in-differences model may deviate when there is time varying panel non-response. If such non-response does not affect the common-trend assumption, then OLS and FE are consistent, but OLS is more precise. However,...

This paper uses the differential timing across counties of the removal of restrictions on Sunday alcohol sales in the state of Georgia to determine whether the change had an impact on employment and hours in the beer, wine, and liquor retail sales industry. A triple-difference analysis finds...

This paper investigates the political economy of after merger effects of the large scale municipal amalgamations in the German state of Baden-W¨urttemberg in the early 1970s. By exploiting the huge variance in the amalgamation process in terms of number of participating municipalities,...

Does birthright citizenship boost immigrant children's educational participation and success? We address this question relying on a reform of the German naturalization law in 1999 that entitled children born after January 1, 2000 to birthright citizenship. We isolate the impact of birthright...

This paper investigates the political economy of after merger effects of the large scale municipal amalgamations in the German state of Baden-Württemberg in the early 1970s. By exploiting the huge variance in the amalgamation process in terms of number of participating municipalities,...