Wisconsin Noncompete Law: § 103.465 in Plain English

Wisconsin scrutinizes restrictive covenants more closely than most states, and one rule explains most of it: an unreasonable restraint is void in its entirety rather than narrowed to something a court finds acceptable. This is the full analysis both sides are working from.

Reviewed by James Barton, Barton Cerjak S.C. · Last reviewed September 16, 2026

The Statute

What Section 103.465 Actually Says

Wisconsin regulates restrictive covenants by statute rather than leaving them entirely to the common law, and the statute is short. Wis. Stat. § 103.465 provides that a covenant not to compete is lawful and enforceable only if the restrictions imposed are reasonably necessary for the protection of the employer, and that a covenant imposing an unreasonable restraint is illegal, void and unenforceable even as to any part of the covenant that would have been a reasonable restraint.

Two things follow from that sentence, and between them they explain most of what happens in Wisconsin noncompete litigation.

First, the burden sits with the employer. A restriction is not presumed valid because it was signed. It has to be justified as reasonably necessary to protect something the law recognizes as protectable.

Second, the consequence of overreaching is total. In most states a court that finds a restriction too broad will narrow it and enforce what is left. Wisconsin's statute says the opposite in plain terms: an unreasonable indivisible restraint is void in its entirety, including the part of it that would have been fine.

That is why Wisconsin is regarded as one of the least employer-friendly states in the country for restrictive covenants, and why an agreement drafted to be maximally broad is frequently worth less here than a modest one would have been.

The Reasonableness Test

Five Questions That Drive the Analysis

Wisconsin courts have applied the same five-part framework for decades. A restrictive covenant must satisfy all five. Failing any one of them is generally fatal to that restriction.

Is the restriction necessary to protect a legitimate interest?

The threshold question, and the one that decides the most cases. Trade secrets, genuinely confidential information, customer relationships the employer invested in building, and goodwill purchased in a business sale are recognized interests. Protection from ordinary competition is not. Neither is the general skill, experience and knowledge the employee developed while doing the job — those belong to the employee and go with them.

Is the time restriction reasonable?

Wisconsin sets no fixed limit, and there is no safe number that works regardless of context. The question is functional: how long does it actually take for the protected interest to lose its value? Where customer relationships turn over quickly or pricing information goes stale in months, a long restriction is hard to justify. Where the interest genuinely persists, a longer one may be sustainable.

Is the territorial or customer scope reasonable?

A restriction has to track the employee's actual working footprint. A statewide territory for someone who covered three counties, or a restriction covering every customer of the company for someone who served a narrow segment, is a standard point of attack. Modern agreements increasingly substitute a customer-based scope for a geographic one, which can be more defensible when it is limited to accounts the employee actually handled in a defined recent period.

Is it harsh or oppressive as to the employee?

Courts look at the practical effect on the person, not just the logic of the clause. A restriction that forecloses the only field someone has worked in, in the only region where they can realistically work, is treated differently from one that keeps them off a defined list of accounts for a defined period.

Is it contrary to public policy?

The broadest of the five, and where the public interest enters — in competition generally, in people being able to earn a living, and in some settings in continuity of service to the public.

If you signed one: what you can do →

No Blue Pencil

All or Nothing — With One Important Exception

Under Wis. Stat. § 103.465, a covenant imposing an unreasonable restraint is illegal, void and unenforceable even as to any part of the covenant that would have been reasonable — Wisconsin courts do not narrow, or “blue-pencil,” an overbroad noncompete to make it enforceable.

The divisibility exception

The exception matters as much as the rule. Wisconsin courts have held that where an agreement contains restrictions that are genuinely separate and divisible — distinct obligations, capable of being read and enforced independently — each may be analyzed on its own. An unenforceable noncompete does not automatically take down a separately drafted confidentiality clause, and one invalid restriction does not necessarily void the rest of a carefully structured agreement.

Divisibility is not a drafting trick that can be added with a severability clause alone. It turns on whether the restrictions really do stand as separate obligations rather than as one restraint expressed in several sentences. It is one of the first questions worth asking about any Wisconsin agreement, on either side of a dispute.

Why this shapes behavior on both sides

For an employee, it means an aggressive letter quoting a very broad restriction is not the same thing as a restriction that will be enforced — but also that the confidentiality and conduct obligations may survive even if the noncompete does not. For an employer, it means the instinct to draft for maximum coverage is actively counterproductive here, and that the enforceable agreement is usually the modest one.

If an employee left: what you can protect →

What the Statute Reaches

Not Every Restriction Is a Noncompete

Section 103.465 is not limited to classic “do not work for a competitor” clauses. Wisconsin courts have applied it to other restraints on post-employment activity, including clauses that do not use the word noncompete at all. Which category a clause falls into changes the analysis substantially.

Generally within § 103.465

Reasonableness analysis applies

Noncompete clauses
Customer nonsolicitation clauses
Employee nonsolicitation clauses
No-hire and no-recruit provisions
Clauses that operate as restraints in substance

Analyzed differently

Different rules or a different standard

Confidentiality and NDA obligations
Trade secret protection by statute
Return-of-property obligations
Invention and IP assignment
Restrictions tied to the sale of a business

Hiring someone who is restricted →

Two of these are worth singling out. Employee nonsolicitation clauses are squarely within the statute — the Wisconsin Supreme Court has struck down a clause reaching every employee of a company regardless of whether the departing employee ever worked with them. And restrictions given as part of the sale of a business are treated differently, because the seller is being paid for goodwill rather than simply agreeing to a condition of employment. Labeling a clause a sale-of-business covenant does not automatically make it one.

Consideration

Did I Get Anything in Exchange for Signing?

A short treatment here; the employee page goes deeper. Wisconsin's answer differs from what people expect, and expectations on this point cause real damage.

Is continued employment enough consideration?

In Wisconsin, generally yes. The Wisconsin Supreme Court has held that an employer's forbearance — its agreement not to exercise the right to terminate an at-will employee — can constitute lawful consideration for a restrictive covenant signed after employment has begun. Employees who assume an agreement is void because they received nothing extra are frequently mistaken.

Does that mean the timing never matters?

No. An employer that extracts a signature and then terminates the employee shortly afterward without cause can face arguments about how the agreement was obtained. And what the employee actually received still bears on the broader reasonableness picture.

What about a severance agreement?

Severance agreements routinely restate old restrictions in broader terms or add new ones, supported by consideration that is unmistakable. Signing one can hand an employer a cleaner and more enforceable agreement than the one it had. Read it against the original before signing.

Beyond § 103.465

The Statutes That Ride Alongside a Noncompete

Noncompete disputes are rarely only about the covenant. These are the claims that typically travel with it — and, importantly, they do not depend on the restrictive covenant being enforceable.

Wis. Stat. § 134.90 — Uniform Trade Secrets Act

Wisconsin's trade secret statute. Information qualifies only if it derives independent economic value from not being generally known or readily ascertainable, and is the subject of reasonable efforts to keep it secret. The second half is contested in nearly every case.

Claims outside the trade secret definition

Wisconsin's Supreme Court has held that the trade secrets act does not displace claims based on confidential information falling outside the statutory definition. Paired with a confidentiality agreement, this is a broader route here than in many states.

Wis. Stat. § 943.70 — Computer crimes

Reaches unauthorized access to, and alteration or destruction of, computer data. Relevant where files were taken in bulk or a device was wiped on the way out.

Wis. Stat. § 895.446 — Civil claim for property crimes

Provides a civil remedy for certain property offenses, including some computer crimes, and can carry exemplary damages and costs.

18 U.S.C. §§ 1836 et seq. — Defend Trade Secrets Act

The federal counterpart, which creates a private right of action and a route into federal court. It conditions exemplary damages and attorney fees on including a whistleblower immunity notice in the agreement — a notice many older Wisconsin agreements lack.

Common law duty of loyalty

Employees may prepare to compete while employed but may not actually compete. This claim is independent of any agreement, and it is frequently where the most damaging facts live.

Choice of Law

Which State's Law Applies?

This question has become far more common, and it is rarely answered by simply reading the choice-of-law clause.

Wisconsin's § 103.465 is stricter than most states' rules, so the stakes are real: the same agreement can be void under Wisconsin law and enforceable under the law of a state that permits narrowing. Employers with out-of-state headquarters routinely draft agreements pointing at their home state's law for exactly that reason.

A contractual choice of law is a starting point, not the end of the analysis. Courts will consider whether the chosen state has a substantial relationship to the parties or the transaction, and whether applying that law would offend a fundamental public policy of the state with the greater interest. Wisconsin's policy against enforcing unreasonable restraints, written into a statute, is a serious argument in that analysis.

The situations where this comes up most:

A Wisconsin resident working remotely for an out-of-state employer
An agreement signed in another state before the employee relocated
A multi-state employer using one form agreement everywhere
A forum selection clause pointing litigation out of Wisconsin

Where the agreement is filed matters as much as what it says. A race to the courthouse — the employer filing to enforce in its chosen forum while the employee files for declaratory judgment in Wisconsin — is a real dynamic in these disputes, and it is a reason both sides move quickly.

The Federal Rule

Didn't the FTC Ban Noncompetes?

This is the question people arrive with most often, and the short answer is that the federal rule never took effect and Wisconsin noncompetes continue to be governed by § 103.465.

The Federal Trade Commission issued a final rule in April 2024 that would have banned most noncompete agreements nationwide. Before its effective date, a federal district court in Texas set the rule aside on a nationwide basis in August 2024. The agency appealed, and subsequently moved to dismiss its appeals, signaling a shift from a blanket rule to case-by-case enforcement.

The practical consequence for anyone in Wisconsin is that the rule has never applied to their agreement. State law governs, and Wisconsin's state law is already among the strictest in the country — which is why the FTC rule would have changed less here than in states that permit courts to narrow overbroad restraints.

Federal activity in this area has moved repeatedly and may move again. Anyone making a decision based on it should confirm the current position rather than relying on a summary, including this one.

From the Field

Wisconsin Law Articles

Wisconsin Law

My Agreement Says It's Tied to the Sale of the Business. Does That Change Anything?

Not if signing it was a condition of your employment. Wisconsin applies § 103.465 to what the agreement did, not what it was titled — and under that statute an overbroad clause is void outright, not narrowed to fit.

Frequently Asked Questions

Questions We Hear About Wisconsin Law

It depends on the specific clauses, and the honest answer usually requires reading the agreement. Wisconsin is one of the strictest states: under § 103.465, a restraint must be reasonably necessary to protect the employer and reasonable in time and territory, and if it is not, it is void entirely rather than narrowed. In practice, broad flat noncompetes often fail while narrower customer non-solicits and confidentiality clauses often survive — which is why the analysis has to go clause by clause rather than agreement by agreement.

Wisconsin sets no fixed limit, and there is no duration that is automatically safe. The test is functional: a restriction lasts only as long as is reasonably necessary to protect a legitimate interest. Where customer relationships turn over quickly or pricing information goes stale in months, a long restriction is difficult to justify. Because an unreasonable indivisible restraint is void entirely rather than shortened, an employer that reaches for an extra year can end up with nothing.

Generally no, and this is the most important single fact about Wisconsin noncompete law. Wis. Stat. § 103.465 provides that a covenant imposing an unreasonable restraint is void and unenforceable even as to any part of it that would have been reasonable. Wisconsin does not blue-pencil. There is one significant qualification: where restrictions are genuinely separate and divisible, Wisconsin courts have held they may be analyzed independently, so one invalid clause does not automatically void a separately drafted one.

Not necessarily a map-based one. Many modern agreements replace a geographic territory with a customer-based scope — restricting the accounts the employee actually served rather than an area — and a well-drawn customer limitation is often more defensible than a broad territory. What matters is that the scope tracks the employee's real working footprint. A statewide restriction for someone who covered three counties is a standard point of attack, and so is a restriction covering every customer of a company the employee served a slice of.

It is genuinely unsettled and often decided procedurally rather than substantively. Courts weigh the agreement's choice-of-law clause, where you worked and lived, and where the employer and its witnesses sit. A separate fight over venue frequently comes first, and because a covenant that is void in one state may be enforceable in another, the court that hears the case often determines the result.

The federal rule never took effect. The Federal Trade Commission issued a final rule in April 2024 that would have banned most noncompetes nationwide, but a federal court in Texas set it aside on a nationwide basis in August 2024 before its effective date, and the agency later moved to dismiss its appeals in favor of case-by-case enforcement. Wisconsin agreements continue to be governed by state law under § 103.465 — which is already among the strictest in the country. Federal activity here has moved repeatedly, so confirm the current position before relying on it.

It varies widely with how far the case goes. A review of the agreement and a response to a cease-and-desist letter is a contained expense, and many disputes end there. Contested injunction proceedings with forensic analysis and expert involvement cost substantially more. Note that many agreements include fee-shifting provisions favoring the employer if it prevails, which is a real factor in deciding how to respond.

Ready to Talk?

Where Does Your Agreement Stand?

The statute is short. Applying it to a particular agreement, and to what actually happened, is where the work is. Most situations can be meaningfully narrowed in one conversation.

Call 414-877-0690 Talk to a Wisconsin Noncompete Attorney →

Barton Cerjak S.C. · 313 N. Plankinton Ave., Suite 207, Milwaukee, WI 53203 · Confidential consultations

This page is general information about Wisconsin law, not legal advice, and reading it does not create an attorney-client relationship. Noncompete disputes turn on the exact wording of your agreement and on what actually happened — talk to a lawyer about your own situation before you act.