Help! My Ex-Employee Is Stealing My Clients!

When a former employee begins targeting your clients, it raises immediate legal and business concerns. You invest time, money, and trust in an employee, and when they leave, they walk straight to your clients. The key question is whether that behavior is lawful competition or an actionable misuse of confidential information.

John Fagerholm, Managing Partner at DefendMyBiz, explains how California law draws that line.

Can a Former Employee Compete and Solicit Your Clients in California?

John doesn't sugarcoat the baseline reality in California: "Non-competes are not favored in California, so anything that prevents a former employee from competing with you is probably not enforceable."

This is often a difficult reality for business owners. But it's the starting point for understanding what you can and can't do here. A former employee can start their own competing business. They can go after clients in your market. They can underprice you and pitch the same customers you've been serving for years.

"If they're getting clients that are accessible to anybody, just because they were your former employees doesn't mean that they can't do that. So they can start their own competing business and go after all of your clients."

This reflects the baseline legal position in California. But this is where it gets more nuanced.

The Exception: Confidential Client Information

The legal analysis changes when the clients being targeted are not publicly accessible, and the only reason the former employee knows whom to call is what they learned while working for you.

"If your client list is confidential information, meaning either you have a confidentiality agreement, which is probably the best thing, indicating these things are confidential and they're not out in the public, then yeah, probably enforceable."

Even without a written agreement, confidentiality may still be established depending on the facts. "Even if you don't have a writing, it may be enforceable if it's confidential information."

John provides a practical example: 

"I had a pool company call me. They had basically acquired a bunch of smaller pool companies. They had a problem with an employee who had a route, quit, and then went back and started trying to start his own business and grab all of those customers on that route."

The key facts that made this potentially actionable: 

"They actually paid for those routes, they paid for those lists, they closed those customers. And, this former employee wouldn't even know about these customers except for the information he had from working with the employer. That's the only reason why he knew these people and knew how to contact them."

This distinction is critical. The information existed because the company built it, bought it, and protected it, not because it was freely available to anyone who looked for it.

The Legal Test: Would the Employee Know These Clients Independently?

John frames the distinction cleanly with a contrast: "If he were just some guy randomly knocking on doors saying, 'Hey, do you want me to clean your pool? I can do it for a better price than your pool company.' There's no problem with that."

The question is whether the clients they're targeting are ones they could have found on their own, or whether those clients exist in their contact list solely because of the access they had as your employee.

For employers dealing with a situation that more closely resembles the pool company scenario, this falls within the realm of trade secret and unfair competition claims. California's Uniform Trade Secrets Act provides a legal framework for exactly this kind of dispute. Our hybrid and non-FEHA claims defense covers how these cases are approached on the employer side.

Preventive Measures: What Employers Should Have in Place

John's mention of the confidentiality agreement isn't incidental. It's the practical takeaway. "You have a confidentiality agreement, which is probably the best thing, indicating these things are confidential and they're not out in the public."

A well-drafted confidentiality agreement, signed at the start of employment, does two things:

• It establishes that certain information is treated as proprietary, and 

• It gives you a contractual basis for action if that information is misused after the employee leaves.

Without it, you're relying on the court to infer confidentiality from the circumstances, which is possible, as the pool company example shows, but harder to prove.

If you don't have confidentiality agreements in place for employees who have access to client lists, pricing structures, or operational information, that's a gap worth addressing now rather than after someone walks out the door with your customer database.

Watch John's full breakdown below:

Protect Your Client Relationships

California law allows former employees to compete, but not to use confidential or proprietary client information. The strength of your legal position depends on whether the client relationships were publicly accessible or derived from protected business data.

Client relationships are often a company's most valuable asset and one of the easiest to lose without safeguards.

If you're dealing with potential client solicitation or reviewing your internal protections, DefendMyBiz works with employers to assess risk and enforce available legal options. Schedule a free 15-minute consultation.

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Disclaimer: The above content is for informational purposes only. This is not legal or tax advice. Laws, IRS guidance, and withholding requirements can change, and outcomes depend on specific facts. You are advised to contact a qualified attorney for any legal advice.