Fun fact. If I'm laid off from my corporate job and after weeks of searching start driving for Uber or delivering pizzas, I am considered employed in the U3 (the unemployment rate most often reported). I would be excluded in U5 rate (they are referred to as "marginally employed") which is about 1% higher.
https://www.bls.gov/news.release/empsit.t15.htm
Another fun fact. If I work 2 jobs at 2 different employers I'm counted as 2 employed people.
https://www.bls.gov/web/empsit/cesfaq.htm
There's some much noise in "unemployment rate" that I would argue it's essentially useless for most purposes.