Four sounds excessive. I think I have 1-2 while my employer has 3 from their side. That’s key, that the employer has the longer notice. As an employee I could p

Four sounds excessive. I think I have 1-2 while my employer has 3 from their side. That’s key, that the employer has the longer notice. As an employee I could probably transfer any knowledge required in a month or two, but if I’m laid off it’s good to know I’m paid for (at least) 3 months.