Illinois Compiled Statutes

820 ILCS 305/18 (2026)

All questions arising under this Act, if not settled by agreement of the parties interested therein, shall, except as otherwise provided, be determined by the Commission

✓ current as of May 2026
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(820 ILCS 305/18) (from Ch. 48, par. 138.18)
    Sec. 18. All questions arising under this Act, if not settled by agreement of the parties interested therein, shall, except as otherwise provided, be determined by the Commission. Claims from current and former employees of the Commission shall be determined in accordance with Section 18.1 of this Act.
(Source: P.A. 97-18, eff. 6-28-11.)

    
Notes of Decisions
Cited in 42 cases, 1994–2020 · leading case: Keating v. 68th & Paxton, L.L.C., 936 N.E.2d 1050 (Ill. App. Ct. 2010).
Keating v. 68th & Paxton, L.L.C., 936 N.E.2d 1050 (Ill. App. Ct. 2010). · cites it 4× “” 820 ILCS 305/18 (West 2006); Cassens, 218 Ill.”
Country Mut. Ins. v. D & M Tile, Inc., 916 N.E.2d 606 (Ill. App. Ct. 2009). · cites it 8× “820 ILCS 305/18 (West 2006). Country Mutual disagrees, arguing that the issue of whether Walenga elected to opt out of coverage under the Act is a question of law, which was properly before the circuit court.”
Paz v. Commonwealth Edison, 732 N.E.2d 696 (Ill. App. Ct. 2000). · cites it 6× “" See 820 ILCS 305/18 (West 1996). Questions regarding the compensation due to an injured employee because of the injury shall be addressed only by the Commission.”
Daniels v. Indus. Comm'n, 775 N.E.2d 936 (Ill. 2002). · cites it 2× “Indeed, the Commission's order is confined to settling disputed questions specifically arising under the Act, including Daniels' claims for temporary total disability benefits (820 ILCS 305/8(b) (West 1998)), medical expenses (820 ILCS 305/8(a) (West 1998)), attorney fees (820…”
Crossroads Ford Truck Sales, Inc. v. Sterling Truck Corp., 2011 IL 111611 (Ill. 2011). · cites it 2× “2d at 286 (quoting 820 ILCS 305/18 (West 1992)). Another section stated that any disputed questions of law shall be determined by the Commission.”
Vill. of Itasca v. Vill. of Lisle, 817 N.E.2d 160 (Ill. App. Ct. 2004). · cites it 2× “2d 1163 , quoting 820 ILCS 305/18 (West 1992). Here, the Department of Revenue Law likewise does not include any "exclusionary language.”
Employers Mut. Companies v. Skilling, 644 N.E.2d 1163 (Ill. 1994). · cites it 2× “” (820 ILCS 305/18 (West 1992).) Section 19 states that "[a]ny disputed questions of law or fact shall be determined” by the Commission.”
Employers Mut. Companies v. Skilling, 629 N.E.2d 1145 (Ill. App. Ct. 1994). · cites it 4× “" (820 ILCS 305/18 (West 1992).) Section 19 adds that "[a]ny disputed questions of law or fact" shall be determined as provided in the Act.”
Grabs v. Safeway, Inc., 917 N.E.2d 122 (Ill. App. Ct. 2009). · cites it 2× “The arbitrator also found that, pursuant to sections 18 and 19 of the Act (820 ILCS 305/18, 19 (West 2006)), the resolution of the medical dispute over whether plaintiffs could return to work was for the Commission to resolve.”
Cassens Transp. Co. v. Illinois Indus. Comm'n, 844 N.E.2d 414 (Ill. 2006). “Section 18 of the Act authorizes the Commission to settle all questions arising under the Act (820 ILCS 305/18 (West 2002)), and section 19 establishes the procedure by which the Commission is authorized to do so (820 ILCS 305/19 (West 2002)).”
Hollywood Trucking, Inc. v. Watters, 895 N.E.2d 3 (Ill. App. Ct. 2008). · cites it 2× “Hollywood contends that there are no provisions within the Workers' Compensation Act which indicate that the Commission is expected to authorize or to adjudicate matters concerning restitution or the repayment of workers' compensation benefits and that the action can only be…”
Crossroads Ford Truck v. Sterling Truck, 959 N.E.2d 1133 (Ill. 2011). · cites it 2× “2d 1163 (quoting 820 ILCS 305/18 (West 1992)). Another section stated that any disputed questions of law shall be determined by the Commission.”
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