How to Fill Out Illinois IWCC Subpoena (Workers’ Comp Illinois) (w/Examples) + FAQs

The Illinois IWCC Subpoena is the official command issued under the Illinois Workers’ Compensation Commission’s authority that forces a witness to appear, give testimony, or produce documents in a pending workers’ compensation case under 820 ILCS 305/16. Any party of record — the claimant (the petitioner), the employer (the respondent), or counsel for either side — may have one issued by the assigned arbitrator or by the Commission Secretary at the Illinois Workers’ Compensation Commission.

Getting the subpoena wrong means lost evidence, a granted motion to quash, or a wasted arbitration date. The IWCC processes more than 40,000 new applications for adjustment of claim per year according to the agency’s annual reports, and arbitrators see hundreds of defective subpoenas every quarter — most failing for missing witness fees, bad service, or a return date that violates the seven-day rule.

Here is what you will learn in this guide:

• 📝 How to complete every box on the IWCC Subpoena form line by line, with sample entries
• ⚖️ The exact statutes and IWCC rules that govern issuance, service, and enforcement
• 💵 The witness fee, mileage, and tender rules that defeat most subpoenas before they leave the office
• 📂 Three full filled-out scenarios covering medical records, payroll, and surveillance
• 🚫 The ten most common mistakes that get IWCC subpoenas quashed and how to avoid them

What the IWCC Subpoena Is and Who Must File It

The IWCC Subpoena is a process document the Illinois Workers’ Compensation Commission issues under Section 16 of the Workers’ Compensation Act, codified at 820 ILCS 305/16. It compels a person, a records custodian, or a corporate representative to appear at an arbitration hearing, a deposition, or a status call, or to produce records by a return date. The current form follows the format set by the IWCC Rules of Practice at 50 Ill. Adm. Code 7030, and the version most arbitrators accept carries a 2023 revision date printed in the bottom-left corner.

Two flavors of the subpoena exist on the same IWCC form. A Subpoena ad Testificandum commands a witness to appear and testify. A Subpoena Duces Tecum commands a person or custodian to bring or send documents, books, or records. The same form can do both at once by checking both boxes; many practitioners use the combined version when calling a treating physician who must testify and bring the chart.

Who files it? Any party of record in an open case before the IWCC. That means the injured worker (or their attorney), the employer, the insurance carrier, a Section 19(b) intervenor, or a pro se claimant. A non-party cannot issue an IWCC subpoena, and neither can a party in a closed case unless a pending Petition to Reinstate or Petition for Review under Section 19 has reopened the file under Section 19(f) of the Act.

The consequence of issuing a subpoena without authority is steep. The arbitrator can quash the subpoena, exclude the evidence, and refer the issuer for sanctions under 50 Ill. Adm. Code 7030.40. A common misconception is that an attorney’s signature alone makes the subpoena valid — it does not. The arbitrator’s signature or the Commission Secretary’s signature is what gives the subpoena its force in Illinois workers’ compensation practice.

Before You Start: Documents and Information You Need

The fastest way to get an IWCC subpoena quashed is to walk into the arbitrator’s office without the basics. Gather every piece of information below before you open the form, because missing one item is enough to delay issuance by a week and cost you the next status call.

• The IWCC case number. Pull it from the Application for Adjustment of Claim filed in the CompFile portal. Without it, the Commission Secretary will not stamp the subpoena.
• The full legal names of petitioner and respondent. Match them to the caption on the most recent pleading, not the accident report. A mismatch triggers a clerical rejection.
• The arbitrator assignment and hearing site. Each case is assigned to one of three hearing sites — Chicago, or one of the 14 downstate venues listed in the IWCC venue list. The wrong venue voids the return command.
• The witness’s full name and current service address. A subpoena to “Records Custodian” without a corporate name fails. A residential address must be a street address, not a P.O. Box, because Illinois service rules require personal delivery.
• A precise records description. Vague phrases like “all documents” invite a motion to quash. Tie the request to dates of treatment, dates of employment, or specific medical providers.
• The return date and time. It must be at least seven days after service for a duces tecum under 50 Ill. Adm. Code 7030.40(c), or it is unenforceable.
• The witness fee and mileage. Illinois requires tender of the statutory $20 witness fee plus mileage at the rate fixed by 705 ILCS 35/4.3 at the time of service.
• A HIPAA-compliant authorization when seeking medical records, signed by the petitioner under 45 CFR 164.512(e) and the Illinois Mental Health and Developmental Disabilities Confidentiality Act.
• A draft Notice to Produce and Certificate of Service. Both must accompany the subpoena under IWCC practice.

Skip the HIPAA authorization and the medical provider will refuse to comply. Skip the witness fee tender and the witness can ignore the subpoena with no penalty, as Illinois courts have held in interpreting Section 16.

Where to Get the Form and How to Access It

The official IWCC Subpoena form is hosted on the agency’s forms page at the IWCC forms library. Download the fillable PDF, not a screenshot or a third-party copy, because the bar code in the footer routes the document to the correct arbitrator. The form is free, and there is no filing fee for issuance.

You can also obtain a paper copy in person at the Commission’s Chicago headquarters at 100 W. Randolph Street, Suite 8-200, or at any downstate hearing site on a hearing day. Pro se filers without a printer can request a blank form by calling the IWCC at (312) 814-6611 and asking the Information Desk to mail one.

The CompFile e-filing portal at the IWCC CompFile login page does not currently issue subpoenas electronically — issuance still requires a wet signature from the arbitrator or the Commission Secretary. That is changing in pilot programs, but as of the 2023 revision, the paper-and-stamp route is the rule. Once issued, the subpoena can be served by personal service through a special process server, by a sheriff, or by certified mail under 50 Ill. Adm. Code 7030.40(b).

A common misconception is that the arbitrator’s law clerk can sign the subpoena. Only the arbitrator or the Commission Secretary may sign. Submitting a clerk-signed subpoena will get it bounced at the front desk and put you a week behind on your evidence deadline.

Step-by-Step: How to Fill Out the IWCC Subpoena Line by Line

The IWCC Subpoena is a one-page form with a caption block, six numbered fields, a witness command block, a records command block, a return date block, a signature block, and a Certificate of Service on the reverse. Fill the boxes in the order they appear. Use black ink or type. All caps are preferred for names because the Commission’s optical scanner reads block letters more reliably.

Caption Box: Case Title

This field asks for the full case caption exactly as it reads on the Application for Adjustment of Claim. Write the petitioner’s name first on the top line, followed by vs., then the respondent’s name on the next line. Do not abbreviate “Incorporated” to “Inc.” unless the corporate name is registered that way with the Illinois Secretary of State.

For example, Maria Lopez writes “MARIA LOPEZ, Petitioner, vs. ACME LOGISTICS, INC., Respondent” in the caption box. The nuance arises with married names: use the name on the application, not a current married name, even if the petitioner has since changed it. The most common mistake is reversing the parties. If you put the respondent on top, the Commission Secretary will reject the subpoena because it no longer matches the case file.

A misconception filers carry is that adding a “d/b/a” (doing-business-as) designation is required. It is not, unless the d/b/a appears on the Application. Adding it without authority creates a service-of-process defect and gives the witness a clean motion to quash.

Box 1: IWCC Case Number

This field asks for the unique case identifier the Commission assigned when the Application for Adjustment of Claim was filed. Format it as 25 WC 012345 — two-digit year, the letters WC, then the six-digit sequence — exactly as printed on the Application receipt. No dashes, no spaces other than between the year, the WC, and the number.

For example, Carlos Reyes writes “24 WC 045678” in Box 1. The edge case is consolidated claims: if the case has been consolidated with another, list the lead case number only, then attach a rider listing the consolidated cases. The most common mistake is using a six-digit number without the WC prefix; the docketing clerk cannot match it to the file and the subpoena dies on the desk.

A misconception is that the carrier’s claim number belongs in this box. It does not. The carrier number goes nowhere on the IWCC subpoena, and writing it in Box 1 is the single most frequent reason pro se filers see their subpoenas returned unstamped.

Box 2: Name and Address of Witness

This field asks who the subpoena commands and where they are. Write the witness’s full legal name on the first line and a complete street address on the second. For a corporate records custodian, write “KEEPER OF RECORDS, [CORPORATE NAME]” and use the registered agent address from the Illinois Secretary of State Business Database.

For example, Janet Kim writes “KEEPER OF RECORDS, NORTHWESTERN MEMORIAL HOSPITAL, 251 E. Huron Street, Chicago, IL 60611” in Box 2. The nuance is hospitals with separate medical-records vendors — many use Ciox Health or Verisma for release. Send the subpoena to the registered agent first; the hospital will route internally if needed.

The most common mistake is using a P.O. Box. Illinois service rules require personal service or certified mail to a physical address, so a P.O. Box address makes the subpoena unenforceable. A misconception is that a generic “Records Custodian” with no entity name suffices — it does not, because no human can be served at that address.

Box 3: Date, Time, and Place of Appearance or Production

This field asks when and where the witness must appear or send records. Use MM/DD/YYYY format for the date and a 12-hour clock with AM/PM for the time. The place must be an IWCC hearing site, the office of the noticing attorney for a deposition, or the records custodian’s own office for a duces tecum response.

For example, Carlos Reyes writes “06/12/2026 at 9:00 AM, IWCC Hearing Room, 100 W. Randolph Street, Suite 8-200, Chicago, IL 60601” in Box 3. The edge case is a pure records subpoena — list the address where records should be mailed and add “Production by mail accepted in lieu of personal appearance.” The most common mistake is setting a return date fewer than seven days after service, which violates 50 Ill. Adm. Code 7030.40(c) and triggers automatic quashing.

A misconception is that the return date must match the arbitration trial date. It does not — return dates can fall on any business day, and most practitioners set them two weeks before trial to give time to review the documents.

Box 4: Description of Documents (Duces Tecum)

This field asks for a precise description of what the witness must bring or send. Avoid the phrase “any and all documents” — Illinois arbitrators read it as overbroad and quash on motion. Tie the request to a date range, a subject, and a custodian, and number each category.

For example, Janet Kim writes “1) All medical records, office notes, imaging studies, and bills for treatment of MARIA LOPEZ, DOB 03/14/1985, from 01/01/2024 through the present; 2) All correspondence between the provider and any insurance carrier regarding said treatment” in Box 4. The edge case is mental health records — those require a separate authorization under the Mental Health and Developmental Disabilities Confidentiality Act, 740 ILCS 110.

The most common mistake is requesting categories the petitioner has not put at issue. The respondent who subpoenas pre-injury gynecological records in a back-injury case will face Rule 7030.70 sanctions. A misconception is that a HIPAA authorization signed by the petitioner removes all relevance objections — it does not, because relevance is decided by the arbitrator, not the patient.

Box 5: Issuing Party and Attorney Information

This field asks who is asking for the subpoena. Write the requesting party’s name, the attorney’s name, the ARDC number, the firm name, the address, the phone, and the email. Pro se filers write “PRO SE” where the ARDC number goes.

For example, attorney Daniel Park writes “Daniel Park, ARDC No. 6298765, Park & Associates, 161 N. Clark Street, Suite 3000, Chicago, IL 60601, (312) 555-0140, dpark@parklaw.com” in Box 5. The edge case is co-counsel — list the lead attorney only and add a Notice of Additional Counsel as an attachment. The most common mistake is leaving the ARDC number blank, which causes the Commission to question authority to issue.

A misconception is that the law firm name alone suffices. It does not — Illinois requires the individual attorney’s name and ARDC number on every process under Illinois Supreme Court Rule 137.

Box 6: Witness Fee Tender

This field asks whether the statutory witness fee and mileage are tendered. Check the Yes box and write the dollar amount tendered, calculated as $20 plus mileage at the rate set by 705 ILCS 35/4.3. Mileage runs from the witness’s residence or place of business to the place of appearance and back.

For example, Daniel Park writes “Yes — $20.00 witness fee plus $14.00 mileage (40 miles round trip at $0.35/mile) = $34.00 tendered by check at service” in Box 6. The edge case is records-only production: many providers will accept a flat statutory fee under 735 ILCS 5/8-2001 of up to roughly $26.38 plus copy charges, billed after production.

The most common mistake is omitting the fee at service. Without tender, the witness is not legally required to comply, and a motion to quash will succeed. A misconception is that a corporate custodian gets no fee — they do, because the statute does not exempt corporate witnesses from the $20 tender.

Signature Block: Arbitrator or Commission Secretary

This field asks for the official IWCC signature that gives the subpoena its force. Leave it blank when you draft. The arbitrator assigned to the case, or the Commission Secretary, signs and dates after reviewing the form. The signature line reads “Issued by order of the Illinois Workers’ Compensation Commission” above the signature.

For example, Arbitrator Patricia Lee signs “Patricia Lee, Arbitrator, 05/28/2026” on the signature line. The edge case is an emergency subpoena for a Section 19(b) expedited hearing — a duty arbitrator may sign on short notice if you call the IWCC Chicago office and explain the urgency. The most common mistake is forging or stamping a signature, which is a felony under 720 ILCS 5/17-3.

A misconception is that the issuing attorney signs above the arbitrator. The attorney signs only the Notice and the Certificate of Service, never the subpoena’s command line itself.

Certificate of Service (Reverse Side)

This field asks how, when, and on whom the subpoena was served. Fill it in only after service is completed. Write the date and time of service, the method (personal, sheriff, or certified mail), the name of the person served, and the server’s signature. Attach the green certified-mail return card if mail service was used.

For example, process server Thomas Reilly writes “Served on KEEPER OF RECORDS, NORTHWESTERN MEMORIAL HOSPITAL, by personal delivery on 05/30/2026 at 10:15 AM, $34.00 witness fee tendered by check #4521. /s/ Thomas Reilly, Special Process Server, License #117-001234” on the reverse. The edge case is service on an out-of-state custodian, which often requires a domesticated subpoena under the Uniform Interstate Depositions and Discovery Act, 735 ILCS 35.

The most common mistake is filing the Certificate before actual service. The arbitrator can strike the entire subpoena for a false return. A misconception is that a paralegal can sign the Certificate — only the actual server can, and that server must be either a sheriff, a licensed special process server, or a person over 18 who is not a party.

Three Filled-Out Examples Using Real Scenarios

The IWCC subpoena flexes to fit very different fact patterns. Below are three full walkthroughs that show what realistic filers actually enter on the form.

Scenario 1: Maria Lopez — Treating Physician Records and Testimony

Maria Lopez is a 41-year-old delivery driver who herniated a disc lifting a 65-pound parcel for ACME Logistics on January 14, 2024. Her attorney needs the treating orthopedic surgeon’s records and live causation testimony at the June 12, 2026 arbitration in Chicago.

Form Section	What Maria’s Attorney Enters
Caption	MARIA LOPEZ, Petitioner, vs. ACME LOGISTICS, INC., Respondent
Box 1 — Case Number	24 WC 045678
Box 2 — Witness	DR. RAVI PATEL, M.D., Midwest Orthopedic Institute, 680 N. Lake Shore Drive, Chicago, IL 60611
Box 3 — Date/Time/Place	06/12/2026 at 9:00 AM, IWCC Hearing Room 8-202, 100 W. Randolph Street, Chicago, IL
Box 4 — Documents	All office notes, MRI images and reports, operative reports, and billing for MARIA LOPEZ, DOB 03/14/1985, from 01/14/2024 to present
Box 5 — Issuing Attorney	Daniel Park, ARDC No. 6298765, Park & Associates, 161 N. Clark, Chicago
Box 6 — Fee Tender	Yes — $20 witness fee + $7 mileage = $27.00 by check
Signature	Arbitrator Patricia Lee, 05/28/2026

Scenario 2: Carlos Reyes — Employer Payroll for AWW Dispute

Carlos Reyes worked seven months for Prairie Steel before a crush injury on August 3, 2025. The respondent disputes his average weekly wage. His attorney subpoenas the payroll department for the 52-week wage history under Section 10 of the Act.

Form Section	What Carlos’s Attorney Enters
Caption	CARLOS REYES, Petitioner, vs. PRAIRIE STEEL CORP., Respondent
Box 1 — Case Number	25 WC 067890
Box 2 — Witness	KEEPER OF PAYROLL RECORDS, PRAIRIE STEEL CORP., c/o Illinois Corporation Service Co., 801 Adlai Stevenson Dr., Springfield, IL 62703
Box 3 — Date/Time/Place	07/15/2026 at 10:00 AM, mail production accepted to issuing counsel’s office
Box 4 — Documents	Weekly payroll registers, W-2s, time cards, and overtime records for CARLOS REYES, SSN ending 4321, from 01/01/2024 through 08/03/2025
Box 5 — Issuing Attorney	Lisa Nguyen, ARDC No. 6312456, Nguyen Workers’ Law, Springfield
Box 6 — Fee Tender	Yes — $20.00 witness fee tendered with subpoena
Signature	Arbitrator Michael Brennan, 06/01/2026
Certificate of Service	Served by certified mail RRR #7019-1640-0000-1234-5678 on 06/03/2026

Scenario 3: Aisha Rahman — Surveillance Vendor Records (Defense Subpoena)

Aisha Rahman filed a repetitive-trauma claim against MetroMart. The respondent’s defense counsel suspects symptom magnification and subpoenas the surveillance vendor’s raw video and investigator notes for impeachment under Rule 7030.70.

Form Section	What Defense Counsel Enters
Caption	AISHA RAHMAN, Petitioner, vs. METROMART STORES, LLC, Respondent
Box 1 — Case Number	25 WC 098765
Box 2 — Witness	KEEPER OF RECORDS, SENTINEL INVESTIGATIONS LLC, 200 W. Adams St., Suite 1500, Chicago, IL 60606
Box 3 — Date/Time/Place	08/05/2026 at 9:00 AM, deposition at 100 N. LaSalle, 28th Floor, Chicago
Box 4 — Documents	All raw video footage, investigator field notes, and reports of surveillance of AISHA RAHMAN conducted between 02/01/2026 and 06/30/2026
Box 5 — Issuing Attorney	Robert Chen, ARDC No. 6275432, Chen Defense Group, Chicago
Box 6 — Fee Tender	Yes — $20.00 + $9.10 mileage = $29.10 by check
Signature	Arbitrator Stephanie Kim, 07/01/2026
Certificate of Service	Served personally by Thomas Reilly, Special Process Server #117-001234, on 07/03/2026 at 11:42 AM

How to File the Completed Form

Issuance and service are two separate steps. First, present the completed subpoena to the arbitrator for signature. Then serve it on the witness. Then file the executed Certificate of Service with the case file.

In person at the IWCC. Walk the original subpoena to the arbitrator’s chambers at the Chicago headquarters, 100 W. Randolph Street, Suite 8-200, or to the downstate hearing site assigned to your case. There is no fee. Processing time is same-day if the arbitrator is on the bench. Keep the signed original and a stamped copy as proof of issuance.

By mail to the assigned arbitrator. Send the original plus a self-addressed stamped envelope to the arbitrator at the IWCC’s Chicago address. There is no fee. Processing time runs five to ten business days. The returned signed subpoena is your proof.

Service by sheriff. File a Praecipe with the county sheriff where the witness lives or works. The sheriff’s fee runs $30–$60 depending on county under each county’s sheriff’s office fee schedule. Payment is by check or money order. Processing runs one to three weeks. The sheriff’s return-of-service sheet is your proof.

Service by special process server. A licensed special process server appointed under 735 ILCS 5/2-202 can serve the subpoena. Fees are negotiated, typically $75–$150. The server’s affidavit on the Certificate of Service is your proof.

Service by certified mail. Allowed for records-only duces tecum subpoenas under 50 Ill. Adm. Code 7030.40(b). USPS fee runs about $9.45 with return-receipt. Processing runs five to seven days. The signed green card is your proof.

E-filing the Certificate of Service. Once served, upload the executed Certificate to the CompFile portal under the case docket. There is no fee. The CompFile timestamp is your proof.

What Happens After You File

After issuance and service, three things can happen. The witness complies — they appear, testify, or send the records by the return date. That is the goal, and most subpoenas resolve this way. The records arrive at counsel’s office; counsel marks them as exhibits at arbitration under Section 16.

The witness moves to quash. Under 50 Ill. Adm. Code 7030.40(d), the witness or any party may move to quash within seven days. The arbitrator hears the motion at the next status call. Common grounds are overbreadth, irrelevance, privilege, undue burden, and defective service. If granted, the issuing party can re-issue with a narrower scope.

The witness ignores the subpoena. The IWCC has no contempt power of its own. Instead, the issuing party files a Petition to Enforce in the Circuit Court of the county where the witness was served, under Section 16 of the Act. The circuit judge can hold the witness in contempt, impose fines, and order production. Enforcement typically takes 30 to 60 days.

A common misconception is that an IWCC arbitrator can jail a witness directly. Only an Illinois circuit judge can. The arbitrator’s role is to certify non-compliance and refer the matter; the circuit court does the enforcement.

Mistakes to Avoid When Filling Out the Form

Even seasoned practitioners trip on the details of the IWCC subpoena. The list below tracks the ten errors arbitrators see most often, drawn from published IWCC arbitrator decisions.

• Wrong case number format. Writing 045678 instead of 24 WC 045678 leads to a docketing rejection.
• P.O. Box service address. Personal service requires a street address, so a P.O. Box invalidates service.
• Missing witness fee tender. Without the $20 + mileage at service, the witness is not bound.
• Return date inside seven days. Violates Rule 7030.40(c) and is automatically quashable.
• Overbroad records request. “All documents” draws sanctions and a granted motion to quash.
• No HIPAA authorization for medical records. Providers refuse and the records never arrive.
• Issuing on a closed file. The arbitrator has no jurisdiction without a pending Section 19 petition.
• Forgetting the Certificate of Service. The arbitrator cannot enforce without proof of service.
• Law clerk signature. Only the arbitrator or Commission Secretary may sign — clerk signatures are void.
• Reversed caption. Listing the respondent as the petitioner triggers an immediate clerical bounce.

Do’s and Don’ts

A few simple habits keep IWCC subpoenas alive and enforceable.

• Do verify the assigned arbitrator on the IWCC case status page before drafting, because a wrong arbitrator’s name causes routing errors.
• Do tender the witness fee in cash or by certified check at the moment of service, because tender at service is the trigger for compliance.
• Do narrow records requests by date and subject, because narrow requests survive motions to quash.
• Do use a licensed special process server, because their affidavit is harder to attack than a friend’s.
• Do keep a stamped copy of the issued subpoena, because the original travels with the server.
• Do calendar the return date plus seven days, because that is when motions to quash come due.
• Don’t copy a circuit court subpoena form, because IWCC arbitrators reject non-IWCC forms outright.
• Don’t leave Box 6 blank, because the absence of a fee notation kills enforceability.
• Don’t rely on email service, because Illinois has not authorized email service of subpoenas at the IWCC.
• Don’t subpoena opposing counsel directly without first noticing the deposition, because the protective rules in Rule 201(k) apply by analogy.
• Don’t alter a signed subpoena, because changes after issuance void the document.
• Don’t wait until the eve of trial, because service problems cannot be cured in 24 hours.

Pros and Cons of Filing on Your Own vs. With Help

Pro se claimants can issue an IWCC subpoena, but the technical traps make professional help worth considering. The trade-offs below come up in nearly every case.

Pros of filing on your own. First, no attorney’s fee — the petitioner keeps every dollar of the recovery. Second, full control over timing and scope. Third, direct line of communication with the arbitrator’s chambers. Fourth, useful learning experience for short-record cases. Fifth, faster turnaround when the case is uncomplicated and the witness will cooperate voluntarily.

Cons of filing on your own. First, the procedural rules in 50 Ill. Adm. Code 7030 are unforgiving. Second, motions to quash are technical and often dispositive. Third, fee calculation errors are common and fatal. Fourth, enforcement in circuit court is its own civil action that pro se filers struggle to navigate. Fifth, the Illinois State Bar Association lawyer referral service shows that most claimants who try pro se subpoenas re-engage counsel after the first quash.

FAQs

Can a pro se claimant issue an IWCC subpoena?

Yes. Any party of record can request issuance from the assigned arbitrator under 820 ILCS 305/16, but the arbitrator’s signature is what makes the subpoena enforceable.

Is there a filing fee for an IWCC subpoena?

No. The IWCC does not charge to issue a subpoena, though service costs (sheriff or special process server) and the statutory witness fee are borne by the issuing party.

Do I write my IWCC case number with dashes in Box 1?

No. Use the format YY WC NNNNNN with single spaces — for example 24 WC 045678 — never 24-WC-045678, because the docketing system rejects dashes.

Can I serve an IWCC subpoena by email?

No. Illinois has not authorized email service of subpoenas at the IWCC, so use personal service, sheriff service, special process server, or certified mail under Rule 7030.40(b).

What is the witness fee in Illinois for an IWCC subpoena?

Yes, a fee is required: $20 per day plus statutory mileage under 705 ILCS 35/4.3, tendered at the moment of service to bind the witness.

Do I list the carrier’s claim number on the subpoena?

No. The carrier number does not belong on the form. Box 1 takes the IWCC case number only, and the carrier number can confuse docketing and trigger rejection.

Can I subpoena medical records without a HIPAA authorization?

No. A subpoena alone is not enough under 45 CFR 164.512(e); attach the petitioner’s signed authorization or the provider will refuse to release the records.

How many days’ notice does a Subpoena Duces Tecum require?

Yes, notice is required: at least seven days between service and the return date under 50 Ill. Adm. Code 7030.40(c), or the arbitrator will quash on motion.

Can the arbitrator’s law clerk sign the subpoena?

No. Only the arbitrator or the Commission Secretary may sign. A clerk-signed subpoena is void and the Commission Secretary’s office will reject it on intake.

What happens if a witness ignores an IWCC subpoena?

Yes, there are consequences: the issuing party files a Petition to Enforce in circuit court under Section 16 of the Act, and the circuit judge can hold the witness in contempt.

Do I need to write “Keeper of Records” or a person’s name in Box 2?

Yes, write “KEEPER OF RECORDS, [ENTITY NAME]” with a registered-agent street address; a generic Records Custodian with no entity fails because no human can be served.

Can I issue an IWCC subpoena after my case is settled?

No. Once the contract approval order is entered, the case closes and the arbitrator loses jurisdiction unless a Petition to Reinstate or a Section 19(h) review is pending.

Does Box 6 require both a fee and a mileage number?

Yes. Both the $20 statutory witness fee and the round-trip mileage at the 705 ILCS 35/4.3 rate must be stated and tendered, or the witness can ignore the subpoena.

Can the same subpoena command both testimony and records?

Yes. The IWCC form allows checking both the ad Testificandum and Duces Tecum boxes, which is standard when subpoenaing a treating physician who must testify and bring the chart.