I put my resume out there just to see....bam! About a 20% increase in pay...Told my old boss, he said he cannot match it and shook my hand and said God speed.
I was working a company when the supervisor was replaced with a new woman (later became a director) and a year or so later I said I thought I might move back to Minnesota.
She did not hesitate and said she would give me a recommendation....
She just wanted to get rid of me ! : )