If everyone is the same situation then that delay becomes just a normal aspect of the hiring process. I'd be more concerned about the types of abuses that the delay could allow in countries with a less mature employment culture: backing off at the last minute and wasting 3 months of that company's time, bullying a leaver for all of 3 months to discourage other people, etc.

>backing off at the last minute and wasting 3 months of that company's time

Means you're unlikely to get another job in the industry.

>bullying a leaver for all of 3 months to discourage other people

Would result in an easy case for constructive dismissal.

Yes, they would wait. Everybody else in the setting does.

And then there probably is a way to shorten the notice period when both sides agree (I extrapolate to Norway how in my country it works).

I was shocked to see that a month of notice is common here (Ireland). It actually was an issue when I wanted to attend a conference for my new employer (gave notice around 11 PM exactly 30 days before I had to fly).

I get that it's apparently an employee protection but it does seem kind of ludicrous. What happens if you rage quit? Win the lottery?

>What happens if you rage quit? Win the lottery?

Well, I'm a professional, so I finish my job...

I shouldn't be changing job more than once every 2 years, so 3 months is nothing. The notice period is often reduced for the first 6 months, or you can ask for that before signing your contract.

In reality a company has no real desire to keep a disgruntled employee longer than they have to, so you can burn bridges and leave earlier if force the issue. It's a pretty unprofessional thing to do though.

Well sure, I think the difference is between what's courteous and what's contractually stipulated. It's rude to give short or no notice regardless, but it's not always a contractual obligation.

you can always negotiate to get out earlier if you want to. That's the way it works in Germany and Belgium, probably in most other European countries as well.