I was hired by a place that did all the standard stuff for pre-hire. Drug test, background check etc.
The Wednesday prior to the Monday I was scheduled to start, I was called and told the job was no longer available. I happened to know some people who worked there, so was able to find out what happened.
I was being hired to replace someone who was leaving the company. For whatever reason, they requested to cancel their resignation and stay. The company agreed to let him stay, so I was out of a job before I even started.
I wasn’t happy, but I’m glad I didn’t quit another job to take this one.
I know some who relocated their whole family to accept a job in a small town almost 2,000 miles away. The company downsized, and laid him off 3 weeks after starting. He had to take another job in a town about 70 miles (each way) away that paid about $15k less a year.