[masraum]

If workers are working at the existing rate of pay, then we don't need to pay them more until they don't want to work any more. We'll just wait until they give notice, then we'll give them a raise and that will save us money in the long term....

Yeah, lots of places will pay at or below market for good employees because the employees will do it. I'm sure, in some cases, you can ask for more and get more, but it's been my experience that 99% of the time, to get what you deserve, you have to leave. Once you tell folks that you are leaving, they may then make a counter-offer, but to me, at that point, it's too little too late.