It's employment law.

Germans are so expensive to hire and maintain that companies have offshored German manufacturing to the United States.

(... And God bless Germany for it. Trickle-down theory doesn't work in general in capitalism but it does work in labor negotiations: every right Germans secure for themselves is a right an American company employing Germans and other countries has to abide by when doing business, and it incentivizes the company to minimize their paperwork by treating everyone to the German standard).