Attorney fees under 750 ILCS 5/508(b) are mandatory when an Illinois family court finds that someone violated an existing order without compelling cause or justification. The judge has no discretion to deny the award once that finding is made. The statute uses “shall,” not “may,” and it does not ask whether the party seeking fees can afford to pay their own lawyer.
Why 508(b) Is Mandatory and 508(a) Is Not
Illinois family law normally lets each party pay their own legal bills. Section 508(a) carves out a discretionary exception for things like divorce proceedings and modification petitions, where a judge weighs the parties’ financial resources and may shift fees based on income disparity. A judge can look at those numbers and decide against an award even when one side earns far less.
Section 508(b) works on a different switch. Once the court determines that a party violated an existing order without compelling cause or justification, the fee award is automatic. The court does not weigh income, need, or ability to absorb the cost. The only question is whether the noncompliance was justified. That removes the unpredictability that often surrounds fee requests under 508(a) and makes 508(b) one of the strongest fee-shifting tools in Illinois family law.1Illinois General Assembly. Illinois Compiled Statutes 750 ILCS 5/508
The statute reaches “every proceeding for the enforcement of an order or judgment.” That language covers child support, spousal maintenance, property division terms, parenting time schedules, and any other order issued under the Illinois Marriage and Dissolution of Marriage Act.
What Counts as Compelling Cause or Justification
Most 508(b) hearings turn on this phrase. Once the moving party shows a violation occurred, the burden shifts to the non-compliant party to prove compelling cause. If they offer no justification, or the justification falls short, the court enters the fee award. Judges do not have the option of splitting the difference based on sympathy. Either the noncompliance was justified or the other side gets paid.
Courts look for genuine inability to comply rather than inconvenience. A sudden layoff, a medical emergency, or a natural disaster might qualify, especially if the party notified the other side promptly. Choosing to prioritize other spending, ignoring the order out of frustration, or hoping no one would notice does not. Judges also consider whether the non-compliant party made any good-faith effort to partially comply or to seek a formal modification before the deadline passed. The line between inability and unwillingness is the whole case.
The Discovery Presumption
Section 508(b) is even stricter when the violated order is a discovery order. If a party fails to comply with discovery, the statute presumes the noncompliance was without compelling cause or justification. The violating party can rebut that presumption only with clear and convincing evidence, a significantly higher standard than the preponderance of the evidence used in most civil matters.1Illinois General Assembly. Illinois Compiled Statutes 750 ILCS 5/508 In practice, stonewalling document requests or hiding financial information almost guarantees a fee award.
Filing the Fee Petition
The process starts with a petition filed in the circuit court where the original case was heard. The petition has to do two things at once: establish that the other party violated a court order without compelling cause, and document the legal fees incurred to enforce it.
You will need:
- A copy of the original order that was violated.
- Evidence that the violation occurred. For child support, payment history from the Illinois State Disbursement Unit is straightforward proof of missed or short payments. For maintenance or property division, bank records and financial statements may show that ordered transfers never happened.2Illinois State Disbursement Unit. Illinois State Disbursement Unit
- Your attorney’s billing records or fee agreement, organized to isolate the enforcement work from unrelated case activity.
Filing fees for enforcement motions vary by county and are modest compared to opening a new case. Illinois courts offer standardized fee waiver forms for civil matters if the cost is a barrier, and you can apply at the time of filing.
What “Reasonable” Fees Means
The statute requires the non-compliant party to pay reasonable fees, not necessarily every dollar billed. Illinois Supreme Court Rule 300 governs fee petitions and requires a summary of the attorney’s services and the fee agreement in enough detail for the court to assess the value of the work. If a written fee agreement exists, relevant excerpts must be attached.3Illinois Courts. Illinois Supreme Court Rule 300
Hourly fee agreements require time-based entries showing what tasks were performed and how long each took. The court decides whether the time and rate are reasonable for the complexity of the enforcement matter. An attorney who bills eight hours for a straightforward missed-payment motion will face scrutiny. Flat-fee and contingent arrangements do not automatically require time entries, unless the attorney seeks to recover more from the opposing party than the client agreed to pay. The court’s test is whether the amount represents fair compensation for services that were reasonable and necessary.3Illinois Courts. Illinois Supreme Court Rule 300
Collecting the Fee Award
A 508(b) fee award becomes a court judgment, enforceable like any other judgment in Illinois. Unpaid awards accrue post-judgment interest at 9% per year until satisfied,4FindLaw. Illinois Compiled Statutes 735 ILCS 5/2-1303 which adds up quickly and creates its own pressure to pay. Available collection tools include wage garnishment, recording a lien against the debtor’s real estate, and contempt proceedings for willful refusal to obey the fee order. A party who ignores the original order and then ignores the fee award can face a second enforcement action, potentially with a second mandatory fee award on top of the first.
Bankruptcy Is Usually Not an Escape
Filing for bankruptcy does not necessarily erase a 508(b) award. Federal law protects “domestic support obligations” from discharge. The Bankruptcy Code defines that term as a debt owed to a spouse, former spouse, or child that is “in the nature of alimony, maintenance, or support,” regardless of how the debt is labeled.5Office of the Law Revision Counsel. 11 U.S. Code 101 – Definitions Attorney fee awards tied to enforcing child support or maintenance can fall within that definition and become non-dischargeable under 11 U.S.C. ยง 523(a)(5).6Office of the Law Revision Counsel. 11 U.S. Code 523 – Exceptions to Discharge Fee awards connected to property division enforcement may survive under Section 523(a)(15), which excepts other divorce-related debts.
Practical Points Before You File
Section 508(b) is powerful, but it is not self-executing. Someone has to file the petition, attend the hearing, and prove the violation, which costs time and money upfront. That creates a bind for parties who are already short on cash because the other side stopped paying. Some Illinois family law attorneys will take enforcement work knowing the statute virtually guarantees fee recovery when the violation is clear; others will want a retainer. Ask about court fee waivers and talk through payment arrangements before signing on.
The strongest petitions are built on clean documentation. Keep copies of every missed payment, every late transfer, and every message where you notified the other party of the violation. If you are on the receiving end of a 508(b) petition, your best defense is evidence that you genuinely could not comply despite reasonable effort, not that you chose to handle money differently or disagreed with the order. Courts draw a sharp line between inability and unwillingness, and only one side of that line avoids a mandatory fee award.1Illinois General Assembly. Illinois Compiled Statutes 750 ILCS 5/508