In this paper we develop two nonparametric tests of treatment effect heterogeneity. The first test is for the null hypothesis that the treatment has a zero average effect for all subpopulations defined by covariates. The second test is for the null hypothesis that the average effect conditional...

This paper assesses the effectiveness of unconfoundedness-based estimators of mean effects for multiple or multivalued treatments in eliminating biases arising from nonrandom treatment assignment. We evaluate these multiple treatment estimators by simultaneously equalizing average outcomes among...

A large part of the recent literature on program evaluation has focused on estimation of the average effect of the treatment under assumptions of unconfoundedness or ignorability following the seminal work by Rubin (1974) and Rosenbaum and Rubin (1983). In many cases however, researchers are...

A great deal of attention has been paid in the literature to estimating the impacts of training programs. Much less attention has been devoted to how training agencies assign participants to training programs, and to how these allocation decisions vary with agency resources, the initial skill...

Estimation of average treatment effects under unconfoundedness or exogenous treatment assignment is often hampered by lack of overlap in the covariate distributions. This lack of overlap can lead to imprecise estimates and can make commonly used estimators sensitive to the choice of...

We provide quasi-experimental estimates of the impact of reforming public training programs offered in Paraguay on formal employment. The Programa de Apoyo a la Inserción Laboral (PAIL) revamped training program design in the country by offering courses aligned with the needs of the private...

This paper uses an overlapping generations model with international labor mobility and apolitically responsive fiscal policy to examine aging in developed and developing regions.Migrant workers change the political structure composed of young and elderly voters in bothlabor-receiving and...

We study differences in the adjustment of aggregate real wages in the manufacturing sectorover the business cycle across OECD countries, combining results from different data anddynamic methods. Summary measures of cyclicality show genuine cross-countryheterogeneity even after controlling for...

We analyze the following questions associated with flexible outsourcing under partlyimperfect dual domestic labour markets, where high skilled workers participate in firm’s profitvia profit sharing: How does the implementation of profit sharing influence flexibleoutsourcing? What is the...

We use Lithuanian, Latvian and Estonian LFS data (2002-2007) complemented with severalother surveys to compare the profile of Baltic temporary workers abroad before and after EUaccession with that of stayers and return migrants. Determinants of migration and return, aswell as selection issues...