[HeyLaughingBoy]

In unusual cases they do. Around the end of the dot-com boom (2000+) the company I was working for for offered a bunch of us bonuses of 20-25%, paid each paycheck, as a "retention benefit." IIRC, they did it for about 3 years.

There was no written or verbal agreement to stay, they just made it very clear that they realized that our job options had increased considerably and wanted to give us more incentive to stay. Some people probably negotiated higher amounts, but since I was already being paid more than I knew what to do with and the job was really a lot of fun, I just happily pocketed the money.