The main idea is to respect your colleagues by getting sure that everything you know is written down in a documentation and train your substitute.
ah, I'm impressed and am at awe at that gesture.
I think 3-months notice is pretty common in Europe. The same goes for Germany. In Poland, where I leave we have 1-month notice unlesss we have more than 3 years experience. It's probably due to training of people who are going to move into your place or for the employer to find someone to take your place...
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