The Illinois Supreme Court recently issued its opinion in Reliable Fire Equip. Co. v. Arredondo, 2011 Ill. LEXIS 1836 (Ill. Dec. 1, 2011). The opinion enforced prior precedent that an employer’s legitimate business interest should be considered in deciding whether a restrictive covenant should be enforced, but it rejected the previously set “tests” and “formulas” employed by Illinois appellate courts in determining whether a legitimate business interest exists. Illinois lawyers should carefully consider the Supreme Court’s decision and reconsider their previous opinions to clients regarding the enforceability of certain covenants.Lawyers Should Reevaluate Advice to Clients Regarding the Enforceability of Restrictive Covenants in Light of New Illinois Supreme Court CaseBy: Joseph R. Marconi and Victor J. Pioli, For ISBA MutualEver since the Fourth District Appellate Court’s opinion in Sunbelt Rentals, Inc. v. Ehlers, 394 Ill.App.3d 421, 915 N.E.2d 862 (4th Dist. 2009), uncertainty has been pervasive regarding what factors a court should consider and what test(s) a court should apply in determining the enforceability of a restrictive covenant under Illinois law. On December 1, 2011, the Illinois Supreme Court rendered its opinion in Reliable Fire Equip. Co. v. Arredondo, 2011 Ill. LEXIS 1836 (Ill. Dec. 1, 2011) to lend some clarity to the issues.