It's not as easy as you think it is. And if such label did exist, people would find a way to abuse it if there's gain from it.Mabinogi needs to tell the difference when someone disconnects/relog/Change channels to crashes.
... or just get VIP (see this post). If one is working, one can afford it. If one is not working then what the heck are they doing playing Mab, they have much bigger issues to deal with.