Hill v. Workday: Supervising Attorney Sanctioned for Failing to Oversee Junior Who Used AI Without Verification | Advocate Prakhar

Case at a Glance

Background

Anthony Hill filed an employment discrimination case against Workday, Inc. The litigation involved discovery disputes in which Webb Law Group, APC, acting for plaintiff, filed a joint letter brief. The brief contained a fake citation to nonexistent law — the product of AI use by associate attorney Katherine Cervantes, who had been separately sanctioned in a prior order (Dkt. 161).

The court issued multiple show cause orders regarding both the fake citation and the failure of Lenden Webb — the named partner and senior attorney who listed himself as counsel of record — to appear at hearings and respond to the court’s inquiries. Webb’s position was that he had not drafted the brief and “did not believe the Order to Show Cause issued on July 30, 2025 (Docket #129) was directed to me.” He attributed this to a “misunderstanding” about whether the show cause order applied to supervising attorneys.

The AI Issue

The court’s analysis of Webb’s supervisory responsibility is the ruling’s most important contribution. Webb was the named partner, the supervisor of Cervantes, and listed as counsel of record on the signature block of the offending submission. Under California Rules of Professional Conduct, Rule 5.1, a supervising attorney has the duty to make reasonable efforts to ensure that supervised lawyers comply with ethical rules. At minimum, the court held, a supervising lawyer should read and understand the content of all pleadings and check citations for accuracy. The fact that Webb did not draft the brief, and did not use AI himself, did not reduce his professional responsibility for its contents.

What the Court Decided

• Attorney Lenden Webb admonished and sanctioned for failure to supervise and failure to respond to court orders.
• Webb acknowledged he possessed managerial authority over Webb Law Group, APC and that he had a duty to ensure ethical compliance — the court found this acknowledgment, while welcome, did not undo the violation.
• Webb’s firm required to implement mandatory trainings for case staffers that especially emphasise the accountability of associates to check AI-generated citations before filing.
• The court expressed that managers in law firms have a non-delegable obligation to take reasonable steps to ensure all lawyers in the firm make ethical representations to courts.
• Prior order sanctioning associate Cervantes for the underlying AI-fabrication remains in place.

“Supervisors who do not draft or sign submissions to the court, but who remain counsel of record and fail to question the accuracy of defective pleadings, fail in their duty of supervision.”

— N.D. California, April 28, 2026

The India Angle

Indian Law Equivalent

In Indian law practice, the principle that a senior advocate is responsible for the conduct of matters in which their name appears is well-established. When a senior advocate gives their opinion or appears in a matter along with a junior, they take on professional responsibility for the conduct of the case. The BCI Rules and professional conventions in India — including the practice of senior advocates and their enrolled juniors — imply that the senior bears responsibility for ensuring that submissions made in their name meet professional standards. An AI error in a filing that a senior has countersigned would engage their professional accountability in the same way as an error in a submission they drafted.

Bar Council Rules

BCI Rule 36 requires advocates to be diligent in attending to the work entrusted to them and to the duties they have undertaken. Rule 35 (competency) applies to the quality of all submissions made in an advocate’s name. The Hill v. Workday ruling’s principle — that being counsel of record means accepting supervisory responsibility for citation accuracy — maps directly onto the Indian concept that an advocate who lends their name to a submission takes on the professional obligations attached to that submission.

Practical Advice for Indian Advocates

• Senior advocates who allow their name to appear as counsel of record on matters prepared by juniors must implement a citation-verification step before any submission is filed — it is not sufficient to trust the junior’s research without independent checking.
• The failure-to-appear pattern in this case (Webb did not attend hearings, did not respond to show cause orders) dramatically worsened the sanction outcome — always respond to court communications about your filings, even when you believe the matter does not concern you.
• Firm-level AI training requirements are becoming a standard sanction remedy — implement them proactively rather than waiting for a court to impose them, as proactive implementation is evidence of good faith that mitigates sanction severity.

Quick Takeaways

• Being named as counsel of record on a filing imposes supervisory responsibility for citation accuracy — “I didn’t draft it” is not a valid defence.
• Failing to respond to show cause orders, even those an attorney believes are not directed at them, compounds the underlying violation and worsens the sanction outcome.
• Mandatory AI citation training at the firm level is now an established sanction remedy — implement it voluntarily rather than as the result of a court order.

Deep Dive: The Non-Delegable Duty of Citation Accuracy — What Senior Attorneys Must Do in the AI Era

The Hill v. Workday ruling, read together with Gentry v. Thompson, establishes a clear framework for supervisory responsibility in AI-era legal practice. Both cases involve a hierarchy of attorneys: a junior who used AI, a supervisor who reviewed or was supposed to review the output, and a question about how responsibility distributes between them. Both cases reach the same conclusion: supervision is not discharged by being uninvolved in the drafting; it requires active engagement with the accuracy of the submission.

What does active engagement require, practically? At minimum: read every submission filed in your name; check at least a sample of the citations (ideally all of them, particularly in briefs that rely heavily on specific case law); and implement a system for tracking whether citations have been verified. For large firms with high filing volumes, this may require dedicated research verification roles, automated citation-checking tools (such as Westlaw’s KeyCite or Lexis’s Shepard’s Signals), or a structured review checklist that is signed off before any filing is approved.

The Hill v. Workday ruling adds another dimension: the duty to respond to court communications. Webb’s failure to appear at hearings and respond to show cause orders — even when he genuinely believed they were not directed at him — violated a separate professional obligation. Courts communicate through the record; if an attorney’s name is on the record, they have an obligation to monitor communications from the court and respond to those communications. The age of AI has not changed this obligation; it has merely added a new category of court communication that attorneys need to be prepared to respond to.

For Indian advocates operating in senior-junior arrangements — which is the standard structure of Indian legal practice — the message is practical: review the filings in which your name appears before they are submitted. In the AI era, this means checking citations specifically, because your junior may have used AI tools that you are unaware of, generating citations that neither you nor your junior has read. The professional risk from a fabricated citation in a submission bearing your name is identical whether you drafted it or your junior did — but the preventive measure is simple: read the citations and spot-check them against verified sources before signing off.