Based on new, exceptionally informative and large German linked employer-employee administrative data, we investigate the question whether the omission of important control variables in matching estimation leads to biased impact estimates of typical active labour market programs for the...

After unification the public and private sector spent large amounts of money to retrain the East Germany labour force in order to ease the transition to the new market economy. Using individual longitudinal and cross sectional data, this book proposes microeconometric methods to evaluate the...