> I mean, it depends on what you need. If someone quit without notice, I’d still be a referral for them if they were good.

But wouldn't you claim that this is not a very common view to hold about the process of quitting, in the US? I've lost count how many times I've heard managers/executives being pissed off because an employee left without a two week notice, and they treat that happening as some sort of failure, instead of just a normal thing.