A single lawsuit just put every company using AI in hiring on the witness stand. A federal judge has granted class-action status in a lawsuit accusing Workday’s hiring software of discriminating by race, age, and disability. The decision opens the door for potentially hundreds of millions of applicants to join the case — and it doesn’t stop at Workday. Any employer that relied on its screening tools could face exposure. The legal theory is simple but dangerous: if AI is used to screen, rank, or recommend candidates, it is a “selection tool” under employment law. That means it must be proven bias-free — just like the standardized tests companies were forced to abandon in the 1970s after the Supreme Court’s Griggs ruling. The risk multiplier: most modern AI models are “black boxes,” making bias testing difficult or impossible. That’s a compliance nightmare waiting to happen. What it means for executives: Contracts with vendors must include bias-testing assurances and indemnification. Internal audits can’t be optional — run manual reviews of rejected applicants. The cost of blind trust in a vendor’s system could now run into the billions. The suit has turned into a live-fire exercise for every company experimenting with AI in hiring. In the wrong hands, the same technology promising efficiency could hand plaintiffs’ lawyers their next decade of work. The question for leadership: If regulators or courts asked you to prove your AI made fair decisions — today — could you? https://lnkd.in/e3fNM8zJ