Earnwt and ORG eligibility

Why is earnwt not 0 for some self employed people. Furthermore, they are not in the ORG, nor eligible, but they have a positive earnwt. why is this?

The cases you have pointed out are likely errors in the source data associated with the universe definition of ELIGORG. For this reason, it is recommended that users impose the CPS eligibility requirements for any analysis of earner study variables, as stated in the comparability tab.