Evaluation of labor market policy measures: Traps and possible solutions
The paper intends to give a survey on nonparametric methods to solve the sample selection problem. We give the main idea and discuss advantages and disadvantages of the procedures that are used for the evaluation of Active Labour Market Policy. The two step Nearest-Neighbor-Matching is presented in detail, because it became the standard technique in the recent years. The IWH refines this method to improve the quality of evaluation results.