How does Equifax obtain this sensitive and secret information? With the willing aid of thousands of U.S. businesses, including many of the Fortune 500. Government agencies — representing 85 percent of the federal civilian population, including workers at the Department of Defense, according to Equifax — and schools also work with The Work Number. Many of them let Equifax tap directly into their data so the credit bureau can always have the latest employment information. In fact, these organizations actually pay Equifax for the privilege of giving away their employees’ personal information.