Workday Must Face AI Hiring Bias Suit — And California Law Applies Nationwide
Derek Mobley applied for jobs through Workday's platform more than 100 times. He was rejected every time. He alleges the software rejected him because he is Black, over 40, and has anxiety and depression.
On June 22, a federal judge decided his case — and a potential class action covering millions of applicants — can proceed.
What the Judge Ruled and Why the Jurisdiction Decision Is the Bigger Story
U.S. District Judge Rita Lin in San Francisco rejected Workday's bid to dismiss the latest version of the complaint, allowing core claims to move forward under California's Fair Employment and Housing Act and the federal Americans with Disabilities Act.
The ruling that has drawn the least attention is the one with the widest reach.
Workday argued that California's anti-discrimination law should not apply to applicants who live outside the state and are applying for jobs in other states or countries. Judge Lin rejected that argument, according to Reuters.
Her reasoning: because Workday is headquartered in California and its AI tools were designed, developed, trained and maintained there, the plaintiffs demonstrated sufficient connection to California to invoke the FEHA — regardless of where the applicant or the employer's job is located.
Workday did not dispute that its tools were built and operated from its California base. That concession became the foundation of Lin's extraterritorial jurisdiction ruling.
The implication extends beyond this lawsuit. Any AI vendor headquartered in California that builds hiring, screening or employment tools there now faces potential FEHA exposure for outcomes affecting applicants anywhere in the world — based on where the algorithm was created, not where the applicant lives.
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What the Claims Actually Allege
The case — *Mobley, et al. v. Workday* — was first filed in 2023 and is the first class action to broadly target the algorithmic decision-making underpinning AI screening software rather than the individual employers using it.
Workday's software is used by more than 80% of US employers and virtually all Fortune 500 companies for hiring and applicant screening, according to multiple industry surveys cited in court documents.
The plaintiffs allege the tools screen out applicants using proxy indicators — employment history gaps, patterns of medical leave, treatment and recovery timelines — that function as surrogates for protected characteristics including disability, age, race and sex. The claim is that the algorithm discriminates without ever explicitly referencing a protected trait.
Judge Lin allowed the ADA disability claim to proceed after the third amended complaint strengthened the connection between one plaintiff's rejection pattern and her history of cancer and asthma treatment — including leave and recovery data the algorithm could interpret as risk signals.
She dismissed a race-based disparate impact claim involving Asian American applicants, finding the plaintiffs had not followed proper procedure to add it to the suit. Claims involving Black applicants, women and people over 40 remain active.
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Workday's Response — and What It Highlights
Workday issued a statement through a spokesperson denying the claims.
The company said its AI recruiting tools do not make hiring decisions "in California or anywhere else," and that the technology "looks only at job qualifications, not protected traits like race, age, or disability."
That defence — that the algorithm is neutral and considers only qualifications — is precisely what the case is testing. The plaintiffs argue that neutrality on its face does not prevent discriminatory outcomes when the underlying training data reflects existing inequities or when facially neutral factors function as proxies.
The court's willingness to allow these claims to survive multiple dismissal attempts signals it considers the question of algorithmic liability to be legally viable — not frivolous.
Lin did grant Workday's motion on one significant point: she dismissed the claim that Workday should be treated as an employer itself because it performs screening functions traditionally done by human HR staff. That question remains unresolved in broader AI employment litigation.
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What Comes Next
The court has authorised notice to go out to a broad potential class: anyone who applied for a job through Workday's platform since September 24, 2020 and was aged 40 or older at the time of application.
That is a large group. Workday processes hiring for thousands of employers. The potential class action could encompass millions of applicants across years of hiring cycles.
A final decision on liability remains far off. The court has only ruled that the case is legally viable and can proceed. Workday continues to deny wrongdoing and will have full opportunity to contest the claims at trial.
But the jurisdictional ruling is already in effect. California anti-discrimination law now follows California-built AI tools wherever their outputs land.
Key Takeaways
- Federal judge Rita Lin ruled on June 22 that Workday must face claims its AI hiring tools discriminated against applicants by age, disability and race under California's FEHA and the federal ADA.
- The court rejected Workday's argument that California law doesn't apply to out-of-state applicants — ruling that tools designed and built in California carry FEHA obligations wherever they're deployed.
- The case — *Mobley v. Workday* — is the first class action to target the algorithmic decision-making of AI screening software at the vendor level rather than the employer level.
- Workday's tools are used by over 80% of US employers and virtually all Fortune 500 companies.
- The plaintiffs allege the software uses proxy indicators — employment gaps, medical leave patterns — to screen out applicants with disabilities, older workers and racial minorities without referencing protected traits directly.
- Class notice has been authorised to anyone who applied through Workday since September 24, 2020 and was 40 or older at the time.
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