Every lawyer makes mistakes—but not every mistake has to jeopardize a legal career. In “The Ethics of Errors,” legal ethics expert Tracy Kepler of CNA explores the critical importance of error disclosure, including how to identify, communicate, and ethically manage mistakes. Attorneys will come away better equipped to protect both their clients and their licenses.
Lawyers are ethically required to disclose material errors to clients. But what qualifies as “material”? According to ABA Formal Opinion 481, a material error is one that a “disinterested lawyer” would view as reasonably likely to:
This duty stems from Model Rules 1.4 (Communication) and 1.7 (Conflict of Interest). Rule 1.4 requires attorneys to keep clients informed, while Rule 1.7 addresses conflicts when an attorney’s personal interest in avoiding liability compromises their representation.
Notably, not every setback qualifies as an error. Some adverse case developments result from reasonable strategic decisions or factors outside an attorney’s control. For example:
To determine if an error must be disclosed, consider:
If the answer to any of these is “yes,” the duty to disclose is triggered.
Disclosure is often the hardest part. Many lawyers struggle with how to have this uncomfortable conversation. The key is to focus on:
What to Include:
What Not to Include:
Suggested Language
Follow the approach from Colorado Bar Association Opinion 113: advise the client that it “may be advisable to consult with independent counsel” regarding the impact of the error.
The duty to disclose applies only to current clients. Once the attorney-client relationship has ended, Model Rule 1.4 no longer applies, and there is no affirmative duty to inform a former client of an error discovered post-representation.
However, if a former client mistakenly believes that you still represent them, you must correct that misunderstanding under Rule 4.3 (Dealing with Unrepresented Persons). This includes:
To avoid ambiguity, attorneys are encouraged to use closure letters when ending a representation, formally establishing the client as “former.”
In-house ethics counsel or a designated general counsel can provide critical guidance after an error occurs. But firms must structure these roles carefully to preserve attorney-client privilege.
To protect intra-firm consultations:
Courts, including in Tattletale Alarm Systems v. Calfee, Halter & Griswold LLP, have upheld privilege for internal ethics discussions—if these standards are met.
Attorneys should contact their professional liability insurer promptly upon discovering an error—even if no claim has been filed.
Key Points on Insurance Reporting:
Most policies cover attorney-client privileged communications with the insurer as part of joint legal defense. But this varies, so lawyers should check their specific policy terms.
Failure to disclose material errors can have serious consequences. Most jurisdictions recognize fraudulent concealment, where silence alone—especially from a fiduciary—can be enough to support a claim.
Consequences of Non-Disclosure:
The cover-up often worsens the situation, and silence may even substitute for active deception under many jurisdictions' laws.
Sometimes. Continuing representation after a disclosed error requires careful analysis under Model Rule 1.7’s four-pronged test:
Obtaining informed consent involves:
Any sign of duress or coercion can render a waiver invalid.
For a deeper dive on this topic, watch the full Lawline course “The Ethics of Errors,” presented by Tracy Kepler of CNA.
The content of this article is provided for informational purposes only and does not constitute legal advice.
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