You can do statistical analysis on employees, and in doing so discover anomalies.

&gt;: OFCCP alleges that it identified preliminary indicators that
Google paid its female employees (2,783) in the Software Engineering Job Family at the
Company’s Mountain View (9/1/14 and 9/1/15), Seattle (9/1/17), and Kirkland (9/1/17)
establishments less than comparable male employees that, if proven, could result in a
violation of Executive Order 11246 § 201(1), 41 CFR § 60-1.4(a)(1), and 41 CFR § 60-
20.3.

https://www.dol.gov/sites/dolgov/files/OFCCP/foia/files/2021-01-15_Google_ERCA_PA_Redacted.pdf