Armed conflicts, natural disasters and infrastructure projects continue to force millions into migration. This is especially true for developing countries. After World War II, about 8 million ethnic Germans experienced a similar situation when forced to leave their homelands and settle within...

Disability insurance (DI) beneficiaries lose part or all of their benefits if earnings exceed certain thresholds ("cash-cliffs"). This implicit taxation is considered the prime reason for the low number of beneficiaries who expand work and reduce benefit receipt. We analyse a conditional cash...

Do export promotion agencies (EPAs) impact the probability of non-exporting firms to export? In the last decade many countries have introduced EPAs to support their firrms in order to deal with asymmetric information problems and make feasible additional gains from trade. Some recent studies...

Experimental evidence on a range of interventions in developing countries is accumulating rapidly. Is it possible to extrapolate from an experimental evidence base to other locations of policy interest (from "reference" to "target" sites)? And which factors determine the accuracy of such an...

Public child care is expected to assist families in reconciling work with family life. Yet, empirical evidence for the relevance of public child care to maternal employment is inconclusive. We exploit the introduction of a legal claim to a place in kindergarten in Germany, which was contingent...

We have estimated effects of job practice for participants entering the programme between 1999 and 2006. On average the programme had a moderately sized positive effect for the participants - the expected time to work for the unemployed participants was reduced by around six per cent over a 700...

This paper estimates the impact of two productive development programs (PDPs) in Costa Rica: PROPYME and CR Provee. The first seeks to increase the capacity of small and medium-sized firms (SMEs) to innovate, and the second aims to increase backward linkages between Costa Rican SMEs and...

Many commonly used treatment effects estimators rely on the unconfoundedness assumption ("selection on observables") which is fundamentally non-testable. When evaluating the effects of labor market policies, researchers need to observe variables that affect both treatment participation and labor...

The 16 German federal states introduced smoking bans on different dates during 2007 and 2008. These bans restricted smoking in enclosed public places, particularly in restaurants and bars. This study examines the effects of smoking bans on self-assessed health. Using data from the Socio-Economic...

Excessive alcohol consumption among youth and young adults is a major public health concern. On March 1, 2010 the German federal state of Baden-W rttemberg banned the sale of alcoholic beverages between 10pm and 5am in off-premise outlets (e.g. kiosks, petrol stations, supermarkets). We use rich...