Incorrect. Here are some numbers: https://www.irs.gov/statistics/soi-tax-stats-individual-statistical-tables-by-filing-status https://www.irs.gov/statistics/so

Incorrect. Here are some numbers: https://www.irs.gov/statistics/soi-tax-stats-individual-statistical-tables-by-filing-status https://www.irs.gov/statistics/soi-tax-stats-individual-stat... They don't have this category exactly, but it is clear that that there are many more than "a few other cases" that are not full-time W-2 employees. For example, 25M returns in 2015 (17%) have no wage income at all and around 13% have self-employment income.