Never had longer notice period than 3 months, and I don't think people would agree to such thing. I've seen people being on notice for a year, but it was consid

Never had longer notice period than 3 months, and I don't think people would agree to such thing. I've seen people being on notice for a year, but it was considered "garden leave". Company pays you not to take any job, so you basically forget what the product was and they move on with functionality. I once had 3 months notice period, when leaving I asked verbally if we can make it 4 weeks, they agreed and that's it.