[dan-robertson]

Well obviously it isn’t necessary to pay them ‘appropriately’ (as I assume you’re suggesting that many don’t. It may also be the case that the cost of losing a key employee times the expected number lost is less than the cost of paying them all enough that they’re paid ‘appropriately’).

But I think the more important question is: who are these key contributors? It’s perhaps easy to identify some of them, particularly those who are louder, and perhaps it is also possible to identify those who appear important but are, in some sense, bluffing. But there are also likely those who are key but whom the system for evaluation overlooks. It’s probably better for those people if they leave as they may find an employer who can better recognise their talents (and leverage them and pay them for it). I don’t think I’d do a great job at recognising such key people even among those I work closely with but maybe I’m just bad at that sort of thing.

[Volrath89]

I think peers in a team always know who is the one who gets almost everything done. Maybe people in managament or in leadership positions don't know, but me in an individual contributor role always know who is the most productive and the one with the most business knowledge of my team.

[andrewflnr]

Obviously identifying key people is hard, or everyone would get it right. Most important things are like that.

(I don't think it's quite as hard as you're making it out, though. Who are the people you go to first with questions about how stuff works?)

Maybe we have a mismatch on what "appropriate" pay means. If the expected cost of losing someone is less than what you're paying them, maybe you're paying them more than what's appropriate. But it does sound a bit like you're falling into the same trap as GP in assuming you have to pay everyone the same rate; I could be misreading you.