We uncovered Meta's 'block lists.' It turns out a lot more companies have them, too.

Ryan McVay/Getty, jayk7/Getty, Tyler Le/BI

Earlier this month, Business Insider revealed that Meta maintains secret "block" lists preventing some former employees from being rehired. Since then, a flood of emails and messages to BI, as well as discussions across Reddit and LinkedIn suggests that this practice, while not illegal, is far more widespread than many job seekers realize.