U3 is kinda silly but is mostly used because it is the original employment rate definition and therefore is comparable across time.
U6 would not include the original poster unless his new job was "minimally attached or part-time for economic reasons." U-6 does not, generally, include people who got a new job for lower pay.
U6 would not include the original poster unless his new job was "minimally attached or part-time for economic reasons." U-6 does not, generally, include people who got a new job for lower pay.