What exactly happens if you break a three month resignation period? I don’t advocate doing this in generally but as a hypothetical exercise if this person just stopped showing up for work, what exactly could the company do?
Well, for one, your work references probably won't be the best. Even if you're not responsible for the problem itself, leaving your employer in the ditch, when there's a major outage - well, it just doesn't look good (barring some scenario where your employer is completely unreasonable - like not paying you). It's kinda like a firefighter that decides to turn off the hose and go home, in the middle of a raging fire.…
The firefighter who recognizes when the building is about to collapse and gets out of there is a good firefighter.