Worth noting that Germany was considered "the sick man of Europe" due to its poor growth and high unemployment from the middle of the nineties to a bit into the 2000s. Not sure that is the entire explanation of his problems, but is probably related.
And Hartz IV is a neo-liberal's wet dream.
In the 20s and at the end of WWII? Any other one I missed?
Not really. UBI would be. The effective marginal tax rate for poor people is pretty high. (The conventional taxes are low, but each extra Euro earned pre-tax cuts into welfare a lot. That incentive ain't great---especially since welfare is a very stable income once you have all the bureaucracy sorted, but the kinds of jobs poor people get are often less stable. Especially jarring if getting a job involves sunk costs like buying a car or moving to a different city.)
See eg http://www.spiegel.de/international/germany/the-price-of-uni... (lots more to be found with some searching).