Here are my sources: [1] Robert Habeck, our Minister for economic affairs say's we can not afford less work. [2] Saxony's Minister arguing for "40 hours workweeks for all" and say's that "part time is a mistake". [4] is Markus Söder, Bavaria's Minister telling his plans to force Teachers to work more [5].
This is a manifold problem. Low post-tax wages (except for some government workers), high stress due to few colleagues and tons of work, extremely late age of entry for pensions.