Wisconsin non-compete law, set out in Wisconsin Statute 103.465, makes a restrictive covenant in an employment contract enforceable only if its restrictions are reasonably necessary to protect the employer. If any part of the covenant goes beyond what’s reasonably necessary, the entire agreement is void, not just the offending piece. That single rule, interpreted strictly by Wisconsin courts, shapes everything about how non-competes work in the state.
One Unreasonable Clause Voids the Whole Agreement
Wisconsin is one of the few states where courts cannot rewrite an overbroad non-compete to save it. If a judge finds the time period too long, the territory too wide, or the scope of restricted work too broad, the whole covenant falls, including the provisions that would have been reasonable standing alone.1Wisconsin State Legislature. Wisconsin Statutes 103.465 – Restrictive Covenants in Employment Contracts
This matters for both sides. An employer that overreaches on a single provision loses all protection. An employee bound by a covenant with one clearly excessive restriction may walk away free of every restriction in the document.
A boilerplate severability clause does not change this. Courts look at whether the restrictions are genuinely independent of each other, not at whether the contract says the surviving parts should be enforced. If the substance of the restrictions is intertwined, severability language cannot pull them apart.
There is one nuance. The Wisconsin Supreme Court in Star Direct, Inc. v. Dal Pra (2009) held that when a contract contains multiple distinct covenants protecting genuinely different interests, those covenants may be treated as divisible. One can be struck without destroying the others, provided each can be “understood and independently enforced” without reference to the others.2Wisconsin State Legislature. Noncompetes in Employment Contracts – Recent Legislative Trends Within any single covenant, though, the all-or-nothing rule still applies.
The Five-Factor Reasonableness Test
Wisconsin courts evaluate restrictive covenants against a five-factor test rooted in Lakeside Oil Co. v. Slutsky. To be enforceable, a covenant must:
- Protect a legitimate employer interest, such as trade secrets, confidential business methods, or customer relationships the employee built on the employer’s dime. Protection against ordinary competition does not count.
- Set a reasonable time limit. Courts typically accept six months to two years, depending on the role and industry.
- Cover a reasonable territory. The geographic scope must match where the employer actually does business or where the employee worked.
- Not be harsh or oppressive to the employee. A restriction that locks someone out of their profession or forces relocation to find work tends to fail.
- Not harm the general public. A covenant that would create a service shortage or function as a monopoly violates public policy.
Courts weigh these factors together, not as a pass-four-of-five checklist.3Marquette Law Review. Commercial Law – Drafting and Enforcing Restrictive Covenants Not to Compete Failing a single factor can doom the entire agreement.
What Counts as a Protectable Interest
Most Wisconsin non-compete fights turn on the first factor. Customer lists and client relationships can qualify as protectable interests, not just trade secrets in the classic sense. The Wisconsin Supreme Court in Farm Credit Services of North Central Wisconsin v. Wysocki confirmed that a customer list can serve as the “specified territory” required by the statute, so a covenant can restrict contact with specific clients rather than cover a geographic area.4Wisconsin State Legislature. Wisconsin Statutes 103.465 – Restrictive Covenants in Employment Contracts – Section: Annotations
The employer still has to show the employee gained something during the job that would give them an unfair edge at a competitor: client trust, proprietary knowledge, inside pricing information. In Wausau Medical Center v. Asplund, the court held that a restrictive covenant cannot shield an employer from ordinary marketplace competition. An employee who is simply good at their job is not a legitimate target of restriction.
Narrow customer definitions tend to survive. In Star Direct, the Supreme Court found a clause reasonable that limited the restriction to “past customers” defined as those who had purchased within one year before the employee left.4Wisconsin State Legislature. Wisconsin Statutes 103.465 – Restrictive Covenants in Employment Contracts – Section: Annotations Vague language like “all potential customers” or “anyone in the industry” would almost certainly fail.
Agreements the Statute Covers
Section 103.465 reaches more than straight non-competes. Any agreement that functions as a post-employment restraint falls under the same five-factor test.
Non-Solicitation Clauses
Customer non-solicitation clauses prevent a departing employee from reaching out to the company’s clients to redirect business. Employee non-solicitation provisions stop someone from recruiting former colleagues. Both face the same reasonableness scrutiny as full non-competes.
Overbroad Confidentiality Agreements
A nondisclosure agreement written so broadly that it effectively prevents using general industry knowledge, as opposed to genuinely proprietary information, can be treated as a restrictive covenant under the statute. Labeling something a confidentiality agreement does not sidestep the five-factor test.
Agents and Independent Contractors
The statute covers covenants by an “assistant, servant or agent” against an “employer or principal.”1Wisconsin State Legislature. Wisconsin Statutes 103.465 – Restrictive Covenants in Employment Contracts Independent contractors and agents can be bound, and their covenants have to meet the same requirements.
Signing a Non-Compete After You’re Already Hired
A common question: does a non-compete bind you if your employer handed it to you months or years into the job without offering anything extra for signing it?
In Wisconsin, yes. The Wisconsin Supreme Court held in Runzheimer International, Ltd. v. Friedlen (2015) that an employer’s decision not to fire an at-will employee counts as lawful consideration for a restrictive covenant.5Justia Law. Runzheimer International Ltd v. Friedlen – 2015 WI 45 Your employer can present a non-compete and tell you to sign it or be terminated. Continued employment is enough. No raise, bonus, or additional benefit is required.
The “I didn’t get anything extra for signing it” argument will not work. Once you sign and keep working, the agreement has consideration. The fight shifts to whether the restrictions themselves are reasonable.
Being Fired Versus Quitting
The statute does not distinguish between voluntary and involuntary departures. By its terms, it applies to restrictions “after the termination of that employment or agency” without carving out firings.1Wisconsin State Legislature. Wisconsin Statutes 103.465 – Restrictive Covenants in Employment Contracts
How you left can still matter under the fourth factor, which asks whether the restriction is harsh or oppressive. A court may view a two-year non-compete differently when the employee was laid off without warning than when they chose to walk away. The oppression argument tends to carry more weight when the employee did not initiate the exit.
Sale-of-Business Covenants Are Different
Section 103.465 governs employment and agency relationships. It does not control non-competes signed as part of selling a business. If you sell your company and agree not to compete with the buyer, that agreement is evaluated under common law standards, not the statute.
The difference is significant. Courts apply less demanding scrutiny to sale-of-business covenants because the seller receives substantial compensation in exchange for the restriction and the parties bargain from more balanced positions. If a sale-of-business covenant is partially unreasonable, a court can enforce the reasonable portions and trim the rest. A judge can shorten a five-year restriction to three years to save the agreement, which is flatly prohibited in the employment context.
The Federal Non-Compete Rule Is Not in Effect
In 2024, the Federal Trade Commission attempted to ban most non-compete agreements nationwide. A federal court found the FTC lacked authority to issue the rule, and in September 2025 the FTC formally moved to dismiss its appeals and accept the rule’s vacatur.6Federal Trade Commission. Federal Trade Commission Files to Accede to Vacatur of Non-Compete Clause Rule Section 103.465 remains the governing law for restrictive covenants in Wisconsin, and no federal ban is in effect.
If you are facing a Wisconsin non-compete, the practical analysis is the same whether you are the employer trying to enforce or the employee trying to leave: walk through the five factors on each distinct restriction in the document, identify any single piece that goes beyond what’s reasonably necessary, and remember that one unreasonable restriction can take the whole covenant down with it.