Earlier quoted context omitted.
When I worked in Europe I had to give 3 months notice. If I left before that I had to pay the company the equivalent salary . So let’s say I leave after 1 month of giving notice. I now owe the employer 2 months salary.
I've had a month of notice in Germany for the past 13 years so YMMV.
Like, I could just stop showing up and they would fire me for cause without notice, but that matters only if I needed unemployment pay. If I already had a new job that I would like to start immediately, I could just do that.