Diaparate impact means disparate racial impact (or disparate against another protected class, but usually racial). So if you hire a smaller fraction of any rac

Diaparate impact means disparate racial impact (or disparate against another protected class, but usually racial). So if you hire a smaller fraction of any racial category of applicants than there were in the pool of applicants or in the workforce of your region, then your hiring method has disparate impact. If you use an objective test that contributes to that disparate impact, you have to be able to prove by thorough studies that it was the best method to pick staff for the specific job you are hiring for. Such studies start around seven figures and won't work for positions with multiple responsibilities or difficult to measure outputs.