Mistakes You Can’t Erase: Your Duty to Inform Your Client About an Error
Kate Gould, Esq.
July 1, 2026
Reading time: 4 minutes

You may recall a time when it wasn’t until the week after the Fourth of July that stores started stocking shelves with school supplies. But now – with the first day of school creeping into the single digit days of August and big box retailers eager to usher in the next season – you can find new backpacks, shiny notebooks, and colorful folders lining store shelves before the end of June. Although I haven’t seen a supply list yet for the upcoming school year, I can almost guarantee it will include that somewhat elusive, and yet often unused item – the pink pearl eraser.
Though elementary school students today are no strangers to tablets in the classroom and might be deleting more than they are erasing, teachers continue to require the arguably antiquated pink pearl eraser for their students. And though I don’t remember using it much during school, it was seemingly always lost at some point during the year or transition into the summer months, requiring me to hunt down that familiar rectangular gummy eraser so I would be ready when my pencil eraser wore down.
Unfortunately, when you make a mistake as a lawyer, not even the pink pearl can save you. Sometimes, despite our diligence and best efforts, we make mistakes leaving, at the very least, a smudge on our reputations or careers. And while you can’t simply erase those mistakes, you can pencil in this protocol to follow if you want to ensure you ethically disclose the error.
First, you must determine whether you are obligated to tell the client about a mistake. ABA Rule 1.4 establishes your duty to keep your client reasonably informed about the matter. ABA Formal Opinion 481 provides that, based on this duty, a lawyer must promptly inform a current client of material errors made during a representation. Of course, this directive prompts the questions of whether the client is “current,” the error is “material,” and what it means to be “prompt.”
Determining whether a client is, in fact, a current client highlights the importance of using engagement and disengagement letters in your practice so there is no question about when the representation began and ended. Once you have determined the client is a current client, evaluate whether the error is material. Opinion 481 found that an error is material if a disinterested lawyer would conclude the mistake is “(a) reasonably likely to harm or prejudice a client, or (b) of such a nature that it would reasonably cause a client to consider termination of the representation even in the absence of harm or prejudice.” What does this mean? While the first category of errors is largely self-explanatory, Opinion 481 further explains the second category of material errors as those that could cause the client to lose confidence in your ability to perform the representation.
Following this initial analysis is determining whether a conflict of interest now exists. ABA Model Rule 1.7(a)(2) states that a conflict exists if there is a significant risk the representation will be materially limited by a personal interest of the lawyer, that being, the possibility of a malpractice claim against you. If that is the case in your circumstances, you have two options: tell the client about the error and withdraw from the matter or ask them to waive the conflict.
Regardless of which option is present in your case, it is critical that you limit your disclosure to the facts and not admit liability when speaking to the client. Why? What you say can potentially affect your coverage and available defenses should the client bring a future malpractice claim against you. Further, for purposes of a withdrawal, you must advise of your professional obligation to withdraw, provide any pertinent deadlines, and recommend that the client consult another attorney as soon as possible. If you seek a conflict waiver because of the possibility of fixing the mistake, you need to provide additional information about why and how the error can be overcome such that your client can provide the required informed consent for the waiver. Additionally, be sure to tell the client of their right to speak to an independent lawyer about the waiver.
Finally, the timing of the disclosure is also a consideration. Opinion 481 states it should be prompt and that greater urgency is required if the client could be harmed by any delay in notification. If the error warrants advising your malpractice carrier – and it is likely better to err on the side of reporting the mistake rather than not timely notifying the carrier – your claims representative can assist in the process of disclosing the mistake to your client.
Just as every school supply box still includes an eraser, your risk management toolbox should include a plan for addressing mistakes. While unfortunately an error cannot simply be rubbed away, careful analysis of the mistake and an ethical response can help protect both your client and your practice.
Additional Ethics content

Ghosting Your Ex (Client)? Navigating Duties to Former Clients
No attorney can be fully insulated from a legal malpractice claim or grievance, but there are certain precautions that can be taken to minimize exposure to such claims. One important risk management tool is the strict screening of all cases before they are accepted into the practice. Rejecting cases with certain “red flags” can go a long way in preventing otherwise avoidable malpractice claims and grievances. Here are eight important questions to ask before accepting any new case.

Small Talk: Communication With A Represented Party
As the holiday party season approaches, crowded calendars and endless small talk become part of the seasonal ritual. After long days spent negotiating or advising clients, the idea of casual mingling may sounds harmless – until a friendly chat turns into something more complicated. In the relaxed glow of an after-work gathering, it is easier than ever to forget professional boundaries and accidentally strike up a conversation with someone represented by another lawyer. These inadvertent exchanges can carry serious ethical implications and remind us that professionalism doesn’t take the night off – even during the holiday season.

As a population who likely entered law school seeing the world in black and white, we had to quickly get comfortable operating in the gray. What is a legal gray area? It is a situation we often encounter in practice where existing law does not neatly apply but where an opportunity exists to allow counsel to present an argument which may ultimately lead to new developments in the law. Not only does this require creative advocacy, but also an adherence to our Rules of Professional Conduct. So, as you develop those arguments, consider your ethical obligations under Model Rule 3.1.
Information provided by AttPro Ally is not intended as legal advice. This publication provides best practices for use in connection with general circumstances and ordinarily does not address specific situations. Specific situations should be discussed with legal counsel licensed in the appropriate jurisdiction. By publishing practice and risk prevention tips, Attorney Protective neither implies nor provides any guarantee that claims can be prevented by the use of the suggested practices. Though the contents of AttPro Ally have been carefully researched, Attorney Protective makes no warranty as to its accuracy, applicability, or timeliness. Anyone wishing to reproduce any part of the AttPro Ally content must request permission from Attorney Protective by calling 877-728-8776 or sending an email to [email protected].
© 2026 AttPro Ally. All rights reserved.