Get your employer's attention with a PRIA request   

If you've been underpaid for decades, I don't think this brilliant plan is going to do much for you. Try just saying you're quitting instead of waiting for a PRIA request to come in. Generally speaking, they send in the PRIA paperwork after you've accepted an offer. What's the difference between resigning and having them find out through a PRIA request. The difference: you'll probably get fired when the get the PRIA request. How you could possibly think this would work in your favor is hilarious.