Reliable Fire v. Arredondo: Non-Competes and the Legitimate Business Interest

Illinois's Supreme Court tied non-compete enforceability to a legitimate business interest judged by the totality of the circumstances, rejecting rigid tests.

A fire suppression sprinkler head mounted on a commercial ceiling
A dispute between a fire-protection company and two departing salesmen reset how Illinois courts judge non-competes. Shutterstock
Educational content, not legal advice. This article explains general legal concepts. It does not create an attorney–client relationship. For your specific situation, consult a licensed attorney.

Reliable Fire Equipment Co. v. Arredondo, 2011 IL 111871, 965 N.E.2d 393 (Ill. 2011), decided December 1, 2011 and modified on denial of rehearing in March 2012, is the decision that told Illinois courts to stop applying rigid formulas to non-compete agreements and start looking at the whole picture. For decades the enforceability of a restrictive covenant had turned on whether it protected a recognized “legitimate business interest,” but the state’s appellate districts had splintered over what that phrase required. The Illinois Supreme Court used a fire-protection company’s suit against two former salesmen to resolve the split, reaffirm that a legitimate business interest is a real and necessary element, and hold that its existence is judged under the totality of the circumstances.

At a glance

  • Case: Reliable Fire Equipment Co. v. Arredondo, 2011 IL 111871, 965 N.E.2d 393 (Ill. 2011)
  • Court: Supreme Court of Illinois
  • Decided: December 1, 2011 (modified on denial of rehearing, March 26, 2012); reversed and remanded
  • Holding: A restrictive covenant is enforceable only if, among other requirements, it protects a legitimate business interest of the employer, and whether such an interest exists is determined by the totality of the facts and circumstances rather than any rigid test.
  • Significance: Set the controlling Illinois standard for restrictive covenants, reconnecting non-compete enforceability to the protectable interests, including trade secrets and near-permanent customer relationships, that justify the restraint.

The facts and the procedural road

Reliable Fire Equipment Company sold and serviced fire alarm and suppression systems. It hired Rene Garcia as a systems technician in 1992 and Arnold Arredondo as a salesman in 1998, and each man signed an agreement promising not to compete with Reliable during employment and for one year afterward within Illinois, Indiana, and Wisconsin. The agreements also barred soliciting Reliable’s customers, referral sources, and employees. Both men eventually left and became associated with High Rise Security Systems, a competitor, and Reliable sued to enforce the covenants.

After a bench trial, the circuit court of Du Page County found the covenants unenforceable, reasoning that Reliable had failed to establish a legitimate business interest to protect. A divided panel of the appellate court affirmed, but the majority and dissent could not agree on what the governing law even was. The disagreement mirrored a broader fracture: some Illinois courts required proof of a near-permanent customer relationship or the employee’s acquisition of confidential information, while others questioned whether the “legitimate business interest” test survived at all. The Illinois Supreme Court granted review to settle the question.

The doctrinal frame: reasonableness and its first element

Illinois analyzes restrictive covenants under the common-law rule of reason. A covenant ancillary to a valid employment relationship is enforceable only if it is reasonable, and reasonableness has three components: the restraint must be no greater than necessary to protect a legitimate business interest of the employer, it must not impose undue hardship on the employee, and it must not be injurious to the public. The court reaffirmed that entire framework. Its contribution was to clarify the first component, the one the parties fought over.

The court traced the pedigree of the legitimate-business-interest requirement through its own precedents, including older decisions applying the rule of reason to covenants restraining trade. It observed that the requirement was long established in Illinois law, even though intermediate courts had layered on subsidiary tests over time. Those subsidiary tests, chiefly the “near-permanent relationship” inquiry and the “confidential information” inquiry, had come to be treated by some panels as rigid, dispositive elements rather than as useful factors.

What the court actually held

The Illinois Supreme Court held two things. First, a legitimate business interest of the employer is a necessary element in the rule-of-reason analysis. The appellate decisions that had suggested the requirement was obsolete were wrong. Second, and crucially, whether a legitimate business interest exists is not decided by any single factor or fixed test. It is based on the totality of the facts and circumstances of the individual case.

Under that approach, factors such as the near-permanence of customer relationships, the employee’s acquisition of confidential information through the employment, and time and place restrictions are relevant and may be weighed, but none is a rigid prerequisite. The court was explicit that these considerations are only nonconclusive aids. The same factor may weigh heavily in one case and count for little in another, depending on context. A short list can never capture every legitimate interest an employer might hold, so the inquiry must remain flexible and grounded in the specific record.

Applying that principle, the court reversed. Because the lower courts had decided the case under the mistaken belief that a rigid test controlled, and because the appellate panel had been openly divided on the applicable law, the correct course was to remand for a fresh determination of Reliable’s legitimate business interest under the totality-of-the-circumstances standard.

Why the totality test matters for trade secrets

The decision matters to trade-secret practice because the legitimate-business-interest requirement is the doorway through which confidential information enters non-compete analysis. An employer that cannot enforce a covenant may still sue for actual trade-secret misappropriation under the Illinois Trade Secrets Act, but a well-drafted covenant lets the employer restrain the risk before secrets ever leave. Reliable Fire confirms that the presence of genuine confidential information, and of durable customer relationships that took time and expense to build, is exactly the sort of interest a covenant can guard.

At the same time, the totality test disciplines employers. A covenant untethered to any real interest, imposed on a low-access employee who holds no secrets and controls no customer goodwill, is vulnerable no matter how carefully its time and geography are drawn. The court’s refusal to reduce the analysis to a checklist means that boilerplate restraints do not gain protection simply by reciting the magic words. The interest must be shown on the facts.

Open questions

Reliable Fire resolved the framework but left the application unsettled. Because the standard is deliberately flexible, it gives trial courts wide discretion and generates less predictability than a bright-line rule. How much weight a near-permanent customer relationship or a body of confidential information should carry in a given industry remains a fact question resolved case by case, which complicates advice at the drafting stage. The decision also did not address how its interest inquiry interacts with adequate-consideration doctrine, a separate Illinois requirement later sharpened by appellate decisions holding that continued at-will employment must last a substantial period to support a covenant. And Reliable Fire predates the wave of statutory reform, including the Illinois Freedom to Work Act, that now overlays income thresholds and notice requirements on top of the common-law reasonableness analysis the court described.

Implications for employers and employees

  • For employers: Do not rely on covenant language alone. Build and preserve a factual record of the protectable interest, the confidential information the employee accessed, the investment in customer relationships, so the covenant can survive a totality-of-the-circumstances review.
  • For departing employees: A covenant is not automatically valid because it was signed. If you held no genuine secrets and controlled no lasting goodwill, the employer may lack a legitimate business interest to enforce, and the totality test invites that challenge.
  • For drafters: Tailor the restraint to the actual interest. Overbroad time, geography, or activity terms invite courts to find the restraint greater than necessary, the very failing the reasonableness test targets even where a legitimate interest exists.
  • For litigators: Frame the interest early and concretely. Generalized assertions of “goodwill” rarely persuade. Tie the restraint to identifiable customers, specific confidential information, and the time and expense the employer sank into both.

Frequently asked questions

What is a legitimate business interest under Reliable Fire? It is the employer’s protectable stake, such as near-permanent customer relationships or confidential information, that a restrictive covenant may guard. After Reliable Fire, Illinois courts decide whether one exists by weighing the totality of the circumstances rather than applying a fixed checklist, so no single factor is dispositive.

Did Reliable Fire make non-competes easier or harder to enforce in Illinois? Neither automatically. It replaced rigid appellate tests with a flexible, fact-intensive inquiry. That gives employers a path to show a legitimate interest on strong facts, but it also denies them a mechanical formula and forces case-by-case proof, which can cut against overbroad covenants.

Does a legitimate business interest alone make a non-compete enforceable? No. The interest is a threshold. The covenant must still be reasonable in time, geographic scope, and activity restrained, must not impose undue hardship on the employee, and must not injure the public. Reliable Fire preserved that full reasonableness framework.

Authorities and sources

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Lidiia Levitska
About the Author

Lidiia Levitska

International Intellectual Property Attorney

Lidiia Levitska focuses on intellectual property dispute resolution, policy, and advisory work across international institutions and government bodies. From 2021 to 2025 she served at the World Intellectual Property Organization (WIPO), managing arbitration cases and overseeing compliance with the Uniform Domain-Name Dispute-Resolution Policy (UDRP), and earlier led IP policy research as a Senior Policy Officer at the American Chamber of Commerce in Ukraine. She holds an LL.M. in International Intellectual Property Law from Chicago-Kent College of Law and an M.A. in Information Technology Law from the University of Tartu, and was admitted to the Ukrainian Bar in 2019.

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