How to Handle a Mistake That Reaches a Client

Nobody warns you about the specific flavour of dread that arrives when a mistake has already left the building. Not the caught-in-time kind, where you notice the wrong date before the letter goes out. The other kind: the file has moved, the email has sent, the client has read it, and there is no undo button anywhere on your keyboard. Your stomach drops through the floor of the office.

I have felt that exact drop, and so has every lawyer I respect. The difference between the ones who come out of it steadier and the ones who spiral is almost never about the size of the error. It is about what they do in the next hour.

First, breathe, then stop the bleeding

Your body will want to do one of two things: hide, or fire off a frantic fix before you have thought it through. Both are traps. The hiding instinct buys you nothing but a bigger problem tomorrow. The frantic-fix instinct is how a small error becomes two errors.

So the very first move is to slow down for sixty seconds and get accurate about what actually happened. Not what you fear happened. What happened.

Ask yourself three plain questions:

• What is the real error, stated in one sentence I could say out loud?
• Who has already seen it, and what have they relied on because of it?
• Is anything still in motion that I can pause right now (a payment, a filing, an outgoing email)?

If something is genuinely time-sensitive, like a limitation period or a court deadline, treat that as its own emergency and deal with it immediately. Everything else can wait the few minutes it takes to think clearly.

Tell someone senior before you tell the client

This is the step new lawyers most want to skip, and skipping it is the mistake behind the mistake.

When you are articling or in your first couple of years, you are not expected to carry an error alone. You are expected to raise it. Your principal, your supervising lawyer, or a partner on the file needs to know early, for three reasons. They may see a fix you cannot. They carry professional obligations of their own tied to that file. And in the rare case where the error touches insurance or a possible claim, the timing of that conversation genuinely matters.

I know the fear here. You think that admitting an error will mark you as the associate who cannot be trusted. In my experience the opposite is true. The associate who quietly hides a problem is the one who loses trust. The one who walks into an office and says, "I made an error on the Henderson file, here is what happened and here is what I think we should do," is the one people learn to rely on.

The lawyers who got promoted were never the ones who never erred. They were the ones you could hand a problem to and trust to name it before it grew teeth.

Go into that conversation with a proposed path, not just a confession. "Here is what happened, here is the impact as I understand it, and here is what I would suggest we do about it." Even if your supervisor changes the plan entirely, you have shown that you can think under pressure, which is most of the job.

Own it with the client, cleanly

Once you and your supervisor have a plan, the client conversation is often less frightening than the anticipation of it. Clients are people. Most of them have made mistakes at their own work and know how it feels.

A few principles carry almost all the weight here.

Be direct and early. If the client is going to find out, they should hear it from you first, framed by you, not stumble across it later and wonder what else you have hidden. Delay reads as concealment even when it is just fear.

Say the actual words. "I made an error" lands differently than "there appears to have been an issue with the file." Passive language fools no one and quietly signals that you are dodging responsibility. Plain ownership is disarming.

Lead with the fix, not the apology. Clients care far less about how sorry you are than about what happens next. Tell them what you are doing to correct it, what the realistic impact is, and what they can expect from here. An apology wrapped around a clear plan is reassuring. An apology floating on its own is anxious.

Do not over-explain. You are not building a defence. A short, honest account of what went wrong is more credible than a paragraph of context that sounds like excuse-making. Resist the urge to narrate every mitigating factor.

Understand what the mistake actually costs

Part of handling an error well is being honest with yourself about its weight, in both directions. New lawyers tend to catastrophize. A typo in a draft is not the same as a missed limitation period, and treating every slip as a five-alarm fire will burn you out before you ever face a real one.

At the same time, some errors carry real professional consequences, and you should know the difference. Anything that could prejudice a client's legal position, expose them to loss, or trigger a possible claim belongs in a conversation with a senior lawyer immediately, not filed under "I will fix it quietly." When you are unsure which category you are in, that uncertainty is itself the signal to ask.

Your provincial law society publishes practice management and professional responsibility resources, and the Federation of Law Societies of Canada is a reliable starting point for finding yours. You do not need to become an expert on the disciplinary framework overnight. You do need to know that these obligations exist and that they generally reward early, honest disclosure over silence.

Repair the system, not just the incident

An error that reaches a client is almost always a symptom, not a root cause. Once the immediate fire is out, the useful question is: what let this through?

Often it is not carelessness. It is a workflow with no safety net. You were rushing between three files. There was no second read before things went out. A calendar reminder never got set. The fix that actually protects you is not "try harder next time." Trying harder is not a system.

Build small guards instead:

1. A cooling-off habit for anything that leaves the office. Draft it, then read it again after even a short gap. Fresh eyes catch what tired ones miss.
2. A checklist for repeatable, high-stakes tasks. Filings, closings, and limitation dates deserve a written list, not your memory at 6 p.m.
3. A second set of eyes on the things that matter. Ask a colleague to glance at the important letter. Nobody senior will think less of you for it.

If you want more on protecting your judgment over a long career, our thoughts on mental health in law and on surviving your articling year both circle back to the same truth: sustainable habits prevent more errors than willpower ever will.

Let it change you a little, then let it go

Here is the part that matters most for your well-being, and it is the part lawyers are worst at.

After you have owned the error, told your supervisor, spoken to the client, and fixed the system, you are done. The file is repaired. You are allowed to move on. Carrying an old mistake around like a stone in your pocket does not make you more careful; it makes you more anxious, and anxious lawyers make more mistakes, not fewer.

There is a version of conscientiousness that curdles into something corrosive, where you replay the moment at 2 a.m. for weeks. That is not accountability. That is punishment, and it helps no one, least of all the client you are trying to serve well tomorrow.

Learn the lesson the error was trying to teach you. Adjust the one habit that would have caught it. Then close the drawer. The most respected lawyers I know are not the ones who never dropped a ball. They are the ones who could look you in the eye, tell you exactly what went wrong, and get back to work without flinching.

Every early-career lawyer collects a few of these stories. They feel unsurvivable in the moment and, a year later, become the quiet source of your steadiness. If you are still building toward that first role where you will make and mend these mistakes, the profession pieces here and the current articling and early-career openings are a decent place to keep going.

You will make an error that reaches a client. Then you will handle it, and you will be a better lawyer on the far side of it than you were before.