BTW, it almost sounds like you’re just trying to get around the disparity in wages by nipping around the edges. And that’s a different conversation altogether.
But if you think it’s justified that the 2021 salaries of A and B are $400,000 and $40,000 respectively, then I think it’s hard to justify giving them both a $1,000 raise.
You’re saying that A’s labor is 10x as valuable as B’s. If that was true in 2021 then it’s probably true in 2022 as well.
Where I think some of the problems occur is that in a year with 5% inflation many companies might feel inclined to give A a 10% raise and B a 3% raise. That exacerbates the wage gap.
So first: decide if A is really worth 10x B. If he really and truly is, then give them both 6-8% raises in a year with 5% inflation.