Yeah, plus two weeks' notification. If not, two more weeks severance pay should be added instead.
That's what the law says. But normally, it'll be higher. Better talk to a labour lawyer for this. Some kinda 'formular' is there for calculation, taking into account your age, possibility to find another job, etc. etc..
Companies are trying to save any cents they can, legally or illegally, no matter whether they have better internal lay-off rules or not. For now esp...