> those with 100 or more employees or contractors will have to report median and mean hourly pay rates by job category and “each combination of race, ethnicity,

> those with 100 or more employees or contractors will have to report median and mean hourly pay rates by job category and “each combination of race, ethnicity, and sex.” is what's in the article So it's possible that a particular combination results in a population small enough that it's easy to identify even in the greater pool of 100