Sometimes HR can be too efficient
Many years ago, I worked at a UK university for several years. When my fixed-term contract ended, I moved on, but after a couple of months, I started receiving forwarded letters and journals for another David Harper who still worked at the university, but in an entirely different department. I contacted him to let him know about the screw-up. He told me that wasn't the worst of it. When I left, they stopped paying his salary as well as mine. It seems the HR department had deleted all the David Harpers on the payroll, just to be on the safe side.