Illinois HB 3773: Whippy's Independent Bias Audit

Illinois HB 3773 is unusually specific: it names zip code, by itself, as a discrimination risk, not just broad demographic categories. If you're checking Whippy against it, the short version is that our AI recruiter is independently and continuously audited. Here's how the testing works, and where to see the current results.

The Law Behind the Question

Illinois House Bill 3773 amends the Illinois Human Rights Act (IHRA) to address employers' use of AI in employment decisions. Effective January 1, 2026, it makes it a civil rights violation for an employer to use AI that has the effect of discriminating against employees or applicants on the basis of a protected class, whether or not that discrimination was intentional. It also requires employers to notify employees and applicants when AI is being used in covered employment decisions, such as recruitment, hiring, and promotion.

One provision is worth calling out specifically: HB 3773 explicitly prohibits using zip codes as a proxy for protected classes, a provision the other state laws we test against don't call out by name. Zip code is a well-documented workaround for indirectly encoding race, national origin, or socioeconomic status into a model.

Like California and Colorado, Illinois doesn't mandate a specific bias-testing methodology. The exposure comes from outcomes, not paperwork: because liability turns on discriminatory effect rather than intent, documented testing is the practical way to catch a problem before it becomes a violation.

How Whippy Is Audited Against It

Two methods do the work here, run independently by Warden AI rather than Whippy's own product team. Disparate impact analysis compares selection and scoring rates across demographic groups; counterfactual analysis isolates a single protected characteristic to see whether changing it alone shifts the outcome for an otherwise identical candidate. Whippy AI Recruiter: Independent Bias Audit Results covers how each method works in full.

Warden's audit for Whippy assesses characteristics relevant to Illinois's protected classes, including sex, race/ethnicity, religion, national origin, age, disability, and sexual orientation, among others. For the exact characteristics covered in the current audit cycle, the live report is the source of truth, not this page.

What This Gives You, Precisely

What you get here is third-party, independent evidence, tested at both the group level and the individual level, of how Whippy's AI recruiter performs against the categories Illinois law is concerned with. Neither method alone would be enough; together they cover both whether a group is disadvantaged on average and whether a specific candidate was treated differently because of a protected characteristic.

That evidence has a defined scope, and it's worth stating plainly. An audit report, however rigorous, reflects system behavior under tested conditions at a point in time; it isn't a legal certification and doesn't guarantee outcomes for your specific deployment or hiring decisions. What it gives you is documented, current evidence for your own risk review and compliance planning, ahead of an IHRA complaint, not after one.

See the Current Results

Warden re-runs this audit on a recurring basis, so what you'll find isn't a static result from months ago, it's current. Review the full Illinois-specific report, methodology, and latest findings across all tested categories on Warden's public dashboard, hosted independently of Whippy.

Warden's AI Assurance Dashboard →

Beyond Illinois

Illinois is the only state law we've covered so far that explicitly addresses zip code as a discrimination proxy, but it's not the only law Whippy tests against. If your hiring spans multiple states, here's the rest of our state-by-state breakdown:

• Whippy AI Recruiter: Independent Bias Audit Results →

• NYC Local Law 144 →

• California FEHA →

• Colorado SB 26-189 →

• EU AI Act →

Whippy is an AI-powered communication and recruiting platform built to help teams move faster without sacrificing quality or fairness.