Though with unemployment around 4.3% you may be paying up for mediocre employees you are then stuck with for a long time.
Although mediocre employees can often become great employees with some training and coaching.
Although mediocre employees can often become great employees with some MORE MONEY!
Not in the US? I've heard this cited as a reason for very slow recovery in countries like France with strict firing/closure laws, yeah. But in an at-will state in the US, it's not so tough. Sure, firing 20% of your workforce will make the news, but if you're just firing bad employees you can do it on a rolling basis or otherwise avoid the issue.
Huh?