For example, I'm not eligible for unemployment comp, and if I lose my job I will be counted (if the survey-taker calls me).
What are the chances you will be called?
Unless you are actively registered with some gov’t agency as a job seeker, no one in the gov’t knows you are unemp-loyed nut looking.
Why do you think those unemployment numbers get significantly revised after a month lapses? Because they were severly extrapolated and are never accurate.
Just count how many are paying social security tax. Every single soul who has a job or self employed pays that tax. Everyone else is unemployed. Why do they have to be actively looking to be counted? Because it makes a rosier picture than it is.