The so-called Hartz reform has introduced fundamental changes for publicly sponsored training in Germany. This concerns primarily the emission of training vouchers as an exclusive allocation device, allowing potential participants free choice among training providers within a given training...

This paper assesses the dynamics of treatment effects arising from variation in the duration of training. We use German administrative data that have the extraordinary feature that the amount of treatment varies continuously from 10 days to 395 days (i.e. 13 months). This feature allows us to...