[watwut]

That is what you get when you isolate decision maker from consequences of his decisions. HR does not feel the pain of you leaving, so he does not care. However, he has trouble to find a new person for low salary, so he is forced to raise the offer.

[usrusr]

HR may not see the loss of institutional knowledge of high worker turnover, but they do see a lot of the more monetary costs: with all that constant hiring of replacements going on, HR sure needs a bigger budget next year! We might be looking at an incentive problem, amongst others.