This paper contributes to the debate about the optimal design of tax-transfer systems. Basedon the theory of optimal taxation, combined with microsimulation and microeconometrictechniques we derive the welfare function which makes the current German tax and transfersystem for single women optimal...

We use firm closure data from social security records for Austria 1978-1998 to investigate theeffect of age on employment prospects. We rely on exact matching to compare workersdisplaced due to firm closure with similar non-displaced workers. We then use a differencein-difference strategy to...