Not long ago, the return-to-work file after a workplace injury lived in a manila folder. A case manager talked to the treating physician, HR read the restrictions, a supervisor found modified duty, and someone in the room made a judgment call. Now that same file gets scored.
Predictive models trained on years of claims data estimate when an injured worker will be back on the job in 7, 14, or 30 days, and those numbers land on a claims adjuster's dashboard, an insurer's portal, or a vendor's report long before HR ever meets with the employee.
The shift matters because the algorithm's estimate has a way of hardening into a plan. If the model says "ready in two weeks," that number quietly frames light-duty offers, benefit reviews, and pressure to close the file. HR is still the human on the hook if the return goes wrong, so the questions worth asking have changed.
Can the Model Legally Decide Someone Is Fit to Come Back?
The short answer is no, and federal regulators have been unusually direct about it. Guidance from the EEOC on AI and the ADA treats algorithmic tools used across the employment lifecycle, including performance monitoring and return-to-work decisions, as employer conduct. If the tool screens out a worker with a disability who could do the job with a reasonable accommodation, or if it drives a decision that skips the interactive accommodation process, the employer wears the liability.
Writing in Voices in Bioethics, researchers studying fitness-for-work decisions have raised a parallel concern: a model trained on historical claims inherits historical bias, and it cannot see the context a clinician sees in a room with a real patient. That's a governance problem, not a software problem. Nobody sues the vendor; they sue the employer.
Where This Goes Wrong for HR
The failure mode typically looks like a series of small, defensible-seeming choices that add up to a return no one would have signed off on if a human had been fully in the loop.
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Anchoring on the score. Once a claims file shows "predicted return: 14 days," the modified-duty offer, the check-in cadence, and the benefit review all get built around that number. If the treating physician says four weeks, the number should move with them, though in practice it rarely does.
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Skipping the interactive dialogue. The ADA expects a real back-and-forth about accommodations. A dashboard suggesting an employee is "ready" isn't that conversation, and using it as a substitute is exactly what the EEOC warned against.
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Modified duty in name only. A light-duty role that exists on paper but still requires lifting, standing, or repetitive motion beyond the written restrictions turns a paper return into a real re-injury.
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Wage games disguised as accommodation. A return to a lower-paying modified role can shift the worker into partial disability benefits and reduce the employer's exposure. That may be lawful, or it may look like retaliation depending on how it was engineered.
What HR Should Do Before Acting on the Prediction
Take the score as one input, then build a record that would hold up if anyone asked how the decision was made.
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Get the restrictions in writing. Ask the treating provider for specific, dated functional limits (weight, hours, posture, repetition). Match the modified-duty offer to that document, not to the algorithm's window.
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Run the interactive process on the record. Document the conversation with the employee about accommodations, alternatives, and their own account of what they can and cannot do. Save it.
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Audit the tool you're relying on. Ask the vendor what data trained the model, what it optimizes for, and how disability status is handled. If nobody can answer, that's your answer.
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Separate the benefits question from the fitness question. A prediction that a claim will close soon is a financial forecast. Whether an employee can safely do a task is a medical judgment. Don't let one dress up as the other.
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Give the worker a route to push back. If the return date is being driven by a score, the employee should know that, and should have a clear way to request review, accommodation, or a second medical opinion.
When the Employee Has Already Been Pushed Back Too Early
Sometimes the call has already been made and the worker is hurting again. At that point the conversation moves beyond HR policy. Wage-loss benefits, re-injury claims, and possible retaliation exposure all sit inside workers' compensation and disability law, and the rules vary meaningfully by jurisdiction.
A short consultation with an experienced injury attorney can clarify what the employee is owed and what the employer is exposed to before either side hardens a position. That's cheaper for everyone than a contested claim six months later.
The algorithm isn't going anywhere. It will get better, and it will get more embedded in claims workflows. HR's job isn't to fight the tool. It's to keep the tool from becoming the decision.