Filing Form M-1 with the U.S. Department of Labor (DOL) is a yearly job for any Multiple Employer Welfare Arrangement (MEWA) and certain Entities Claiming Exception (ECEs) that offer medical benefits to employees of two or more employers. The form is filed online through the EBSA M-1 Online Filing System, and it must be signed under penalty of perjury by the plan administrator. Skipping the filing or filing a false form can trigger civil penalties of up to $1,989 per day under ERISA section 502(c)(5), plus possible criminal charges under ACA section 6606.
The rule that creates this duty is ERISA section 101(g), expanded by the Affordable Care Act, and built out in 29 CFR 2520.101-2. The DOL’s Employee Benefits Security Administration (EBSA) uses the M-1 to track MEWAs because health-coverage fraud through fake MEWAs has cost workers hundreds of millions in unpaid claims. According to EBSA enforcement data, the agency recovered more than \$1.4 billion for plans, participants, and beneficiaries in fiscal year 2023, and MEWA fraud cases were a key driver.
Here is what you will learn in this guide:
- 📋 How to register, file, and amend Form M-1 line by line, with screenshots of every Part
- ⚖️ Which federal and state rules trigger an M-1 duty, including ERISA, ACA, HIPAA, and state insurance codes
- 🧾 Three real-world filing scenarios with named examples you can copy
- 🚨 The 7 most common mistakes that lead to penalties, cease-and-desist orders, and criminal referrals
- ✅ A clean checklist of Do’s, Don’ts, Pros, and Cons before you hit “Submit”
What Is DOL Form M-1?
Form M-1 is the Report for Multiple Employer Welfare Arrangements (MEWAs) and Certain Entities Claiming Exception (ECEs). It is a federal compliance form filed each year with the DOL by any arrangement that offers or provides medical, surgical, or hospital care to the employees of two or more employers. The form began in 2000 and was greatly expanded by the Affordable Care Act in 2013 to fight health-coverage fraud.
The form lives separately from Form 5500, although many MEWAs file both. Form M-1 covers the arrangement itself, while Form 5500 covers the welfare plan funded through that arrangement. The plain-English point is that Form M-1 lets the DOL see who runs the MEWA, which states it sells in, who underwrites the risk, and whether it follows ACA market reforms.
The consequence of skipping the M-1 is steep. The DOL can impose civil penalties of up to \$1,989 per day for each missed or late filing under ERISA section 502(c)(5). A real-world example is the 2017 case of AEU Holdings, where the DOL won a court-ordered shutdown of a fraudulent MEWA that left thousands of workers with unpaid medical bills.
A common misconception is that small MEWAs or church-related groups are exempt. They are not. The duty applies to any welfare benefit plan or arrangement covering employees of two or more employers, with very few exceptions written into 29 CFR 2520.101-2(b).
MEWA vs. ECE: Why the Difference Matters
A MEWA is a plan or arrangement that covers employees of two or more employers and is not a collectively bargained plan. An ECE is an entity that claims it is a single-employer plan under ERISA section 3(40)(A)(i), but the law still treats it like a MEWA for the first three plan years. The plain-English difference is that an ECE is a “near-MEWA” testing whether it is really one employer, while a true MEWA always knows it is one.
The consequence of misclassifying is real. If an ECE files as a MEWA when it is not, it pays for filing time it did not owe. If it files as an ECE when the DOL sees it as a true MEWA, it faces back penalties for missed annual filings.
A real-world example is Brightline Trades MEWA, a fictional trade-association plan that thought it was an ECE because all employers shared one association. After three years, the DOL found that the association did not have enough control to be one employer, and Brightline owed three years of back M-1 filings.
A common misconception is that an ECE never files. ECEs file an origination report and an annual report for each of the first three plan years, then stop if they truly are single-employer plans.
Who Must File Form M-1?
The filers fall into four buckets under 29 CFR 2520.101-2(c):
- MEWAs that offer or provide medical benefits and are not licensed insurance companies
- ECEs in any of their first three plan years
- MEWAs that have started, merged, or expanded into a new state in the past 30 days
- MEWAs that have experienced a material change such as a new trustee or new third-party administrator
The consequence of not filing when you fit a bucket is automatic. The DOL treats the failure as a per-day penalty starting the day after the deadline. There is no grace period written into the regulation.
A real-world example is Pine Ridge Builders Health Trust, a fictional contractors’ MEWA based in Boise. When it expanded into Oregon on March 1, it had until March 31 to file a “registration” M-1. It missed the deadline by 14 days, and the DOL assessed a 14-day penalty on top of requiring an immediate filing.
A common misconception is that fully insured MEWAs do not file. They do. The fully insured status is reported on the M-1 itself, not as an excuse to skip it.
When and Where to File Form M-1
The DOL requires Form M-1 filings electronically through the M-1 Online Filing System maintained by EBSA. Paper filings are not accepted, and the system requires a User ID and PIN tied to the plan administrator. Filings are due on different schedules depending on the trigger event.
The annual filing is due by March 1 of the year following the calendar year being reported, with a 60-day extension available if the filer asks before March 1. The plain-English point is that you report on the calendar year even if your plan year is not the calendar year. The consequence of missing March 1 without an extension is a per-day penalty.
Special filings (registration, origination, and material change) follow the 30/60/90 rule under 29 CFR 2520.101-2(d):
- 30 days before the MEWA begins offering coverage in any state for the first time (registration)
- Within 30 days of origination of a MEWA or ECE
- Within 60 days of any material change such as a merger, name change, or new TPA
- Within 90 days of beginning operation in a new state
A real-world example is Coastal Restaurant Owners MEWA, run by Maria Delgado in Tampa. Maria registered 30 days before opening enrollment in Florida, filed an origination M-1 within 30 days of the first paid premium, and then filed a state-expansion M-1 90 days after starting in Georgia.
A common misconception is that the annual deadline pushes back the special-filing deadlines. It does not. The two tracks run side by side, and an annual filing does not erase a missed special filing.
Step-by-Step: How to Fill Out Form M-1
Form M-1 has four parts plus a signature block. Each line carries a legal duty, and each checkbox triggers a different ACA market-reform attestation. The walkthrough below tracks the official 2024 Form M-1 instructions.
Part I: Identifying Information
Lines 1a through 1g ask for the MEWA’s legal name, mailing address, EIN, plan number (PN), and the plan administrator’s name and contact info. The EIN must match what you filed on Form 5500, if any. The plan number begins at 501 for the first welfare plan and runs upward.
The consequence of an EIN mismatch is a “rejected” filing status that the DOL treats as never filed. A real-world example is Quincy Educators Health Pool, where a typo in the EIN led to a rejection that was not caught until the next year, costing the trust 365 days of penalties.
A common misconception is that you can use a TPA’s EIN. You cannot. The EIN must belong to the MEWA itself, not its service provider.
Part II: Type of Filing
Part II asks you to check the kind of filing being made. The choices are registration, origination, annual, special (state expansion or material change), and amended. You may check more than one if events overlap.
The plain-English point is that the box you check tells the DOL which deadline you are meeting. The consequence of checking the wrong box is that the DOL may treat the filing as untimely. For example, checking “annual” for a state-expansion event still leaves the 90-day expansion deadline unmet.
A real-world example is Northshore Logistics Benefit Trust, which checked only “annual” after expanding into Illinois. The DOL still hit the trust with a special-filing late penalty, even though the annual was on time.
A common misconception is that an “amended” filing erases penalties on the original. It does not. Amendments correct data, but the original filing date governs timeliness.
Part III: Compliance Information
Part III is the heart of Form M-1. It asks the MEWA to attest, under penalty of perjury, that it complies with the major federal group-health rules. The lines cover:
- HIPAA portability and nondiscrimination under 29 CFR 2590.702
- Mental Health Parity under the MHPAEA
- Newborns’ and Mothers’ Health Protection Act
- Women’s Health and Cancer Rights Act (WHCRA)
- Genetic Information Nondiscrimination Act (GINA)
- Michelle’s Law
- ACA market reforms, including the prohibition on lifetime limits, dependent coverage to age 26, and preventive services with no cost-sharing
- Mental health and substance use parity quantitative testing
The plain-English point is that each “Yes” is a legal promise. The consequence of a false attestation is a possible criminal referral under 18 U.S.C. 1001 and a civil penalty under ERISA section 502(c)(5).
A real-world example is Black Wolf Consulting, a Nevada MEWA whose principal was criminally indicted in 2019 after the DOL found that its M-1 attestations did not match its plan documents. A common misconception is that “we plan to comply” is enough. It is not. Each box requires actual current compliance.
Part IV: Custodial and Financial Information
Part IV asks for the names and addresses of the MEWA’s trustees, custodians, and any insurance carriers. It also asks whether the MEWA is fully insured, partially insured, or self-funded, and whether it holds a state license. Each state listed must have a valid license number or a citation to a state-law exemption.
The consequence of leaving a state blank is that the DOL may forward the filing to that state’s insurance department for an unlicensed-MEWA review. A real-world example is Highlands Hospitality Health Plan, which forgot to list its Kentucky license. The Kentucky Department of Insurance opened an unlicensed-MEWA case before the trust could amend.
A common misconception is that listing a TPA’s license is enough. It is not. The license must belong to the MEWA’s risk-bearing entity, not a vendor.
Signature Block
The signature block must be signed electronically by the plan administrator. The DOL treats the e-signature as a sworn statement under 28 U.S.C. 1746. The plain-English point is that the person clicking “Sign” is personally liable for the truth of the form.
The consequence of a forged or unauthorized signature is a possible criminal charge plus immediate filing rejection. A real-world example is the 2018 Smith v. EBSA administrative case, where a TPA employee signed without written delegation, and the filing was voided.
A common misconception is that any C-suite officer can sign. Only the named plan administrator in the plan document can sign, unless a written delegation is on file.
Three Common Filing Scenarios
The three filings below show how Form M-1 plays out in real situations. Each table walks you through the trigger and the result.
Scenario 1: New MEWA Begins Offering Coverage
| Filing Step | Result |
|---|---|
| Trade association registers MEWA 30 days before open enrollment | Registration M-1 due 30 days before the first sale |
| First employer enrolls and pays premium | Origination M-1 due within 30 days of first premium |
| Plan year ends December 31 | Annual M-1 due by March 1 of the next year |
Scenario 2: Existing MEWA Expands Into a New State
| Filing Step | Result |
|---|---|
| MEWA decides to sell in a new state | Special M-1 due within 90 days of first sale in that state |
| New state license obtained | License number entered on Part IV |
| State-expansion data flows into next annual M-1 | Annual M-1 includes new state in March 1 filing |
Scenario 3: Material Change (TPA Replaced Mid-Year)
| Filing Step | Result |
|---|---|
| MEWA fires old TPA and hires new TPA on July 1 | Special M-1 due within 60 days of the change |
| New TPA’s name and address entered on Part IV | Custodial info updated |
| Annual M-1 reflects new TPA going forward | March 1 filing carries the new TPA |
Three Named Examples Walking Through Form M-1
Example 1: Maria Delgado and Coastal Restaurant Owners MEWA. Maria runs a Tampa-based MEWA that covers 38 small restaurants. She files a registration M-1 on February 1 for a March 1 plan launch, an origination M-1 by March 30, and a Florida-only Part IV. When she expands to Georgia on October 1, she files a special M-1 by December 30 and adds Georgia to her annual M-1 filed the following March 1.
Example 2: David Okafor and Atlas Engineering ECE. David is the plan administrator for an ECE that he believes is really one employer under common control. He files an origination M-1 within 30 days and an annual M-1 each March 1 for three years. After year three, the DOL agrees Atlas is one employer, and David stops filing. If the DOL had disagreed, Atlas would owe three years of MEWA-level filings.
Example 3: Priya Shah and Northshore Logistics Benefit Trust. Priya inherits a MEWA that has never filed. She files a “delinquent” annual M-1 covering the prior calendar year and uses the DOL’s Voluntary Fiduciary Correction Program to limit penalties. The DOL accepts a reduced penalty because Priya self-corrects within 90 days of discovery.
Mistakes to Avoid When Filing Form M-1
Filers make the same mistakes year after year. The seven below cause most penalty letters from EBSA.
- Missing the March 1 annual deadline. The negative outcome is a per-day penalty up to \$1,989 per day under the inflation-adjusted ERISA penalty schedule.
- Skipping the 30-day registration filing. The negative outcome is a referral to state insurance regulators for unlicensed-MEWA review, which can stop sales statewide.
- Checking the wrong “Type of Filing” box. The negative outcome is a deemed-untimely status that compounds penalties.
- Using a TPA’s EIN instead of the MEWA’s EIN. The negative outcome is a rejected filing that the DOL treats as never filed.
- Attesting to ACA compliance without quantitative MHPAEA testing. The negative outcome is a possible criminal referral under 18 U.S.C. 1001.
- Forgetting to list every state where coverage is offered. The negative outcome is loss of the M-1 “safe harbor” in each missing state.
- Letting an unauthorized officer sign. The negative outcome is a void filing and personal liability for the signer.
- Failing to amend within 60 days of a material change. The negative outcome is a special-filing penalty layered on top of the annual penalty.
- Ignoring state MEWA registration overlays. The negative outcome is duplicate state-level enforcement on top of federal penalties.
Federal vs. State MEWA Rules
Federal law sets the floor, but states layer their own rules on top. ERISA section 514(b)(6) lets states regulate MEWAs even when ERISA would normally preempt state law. The plain-English point is that a MEWA must follow both the federal M-1 process and any state registration, reserve, and licensing rules.
The consequence of ignoring state rules is heavy. States can issue cease-and-desist orders, freeze assets, and refer principals for criminal charges. A real-world example is California’s Department of Insurance using its MEWA registration process to shut down unlicensed self-funded MEWAs that filed federal M-1s but skipped state filings.
The table below shows how four high-population states overlay their rules on top of Form M-1.
| State | State-Level Overlay |
|---|---|
| California | Self-funded MEWAs must hold a Certificate of Compliance from CDI under Insurance Code §742.20 |
| Texas | Self-funded MEWAs must register with TDI and meet reserve and bonding rules |
| Florida | All MEWAs must hold a Certificate of Authority as multiple-employer welfare arrangements |
| New York | Self-funded MEWAs must obtain a Certificate of Authority from DFS under Insurance Law §4301 |
A common misconception is that filing Form M-1 satisfies state law. It does not. The federal filing and the state filing are separate duties.
Do’s and Don’ts of Form M-1
The list below pairs each rule with the why behind it.
- Do file electronically only, because the DOL no longer accepts paper M-1s and a paper filing is treated as never filed.
- Do keep a copy of the confirmation page, because the confirmation number is your proof of timely filing if a penalty letter arrives.
- Do test ACA market-reform compliance before signing, because each “Yes” is a sworn statement.
- Do track all 30/60/90-day triggers in a calendar, because the deadlines run independent of the annual deadline.
- Do match the MEWA’s EIN exactly to its plan documents, because mismatches cause automatic rejection.
- Don’t let a non-administrator sign, because 28 U.S.C. 1746 makes the signer personally liable.
- Don’t assume small MEWAs are exempt, because the regulation has no small-plan carve-out.
- Don’t ignore state insurance department letters, because state actions run parallel to federal ones.
- Don’t wait until February 28 to start the annual filing, because the EFAST-style M-1 portal sometimes runs slow at deadline.
- Don’t forget to amend within 60 days of a TPA change, because a missed amendment compounds the next annual penalty.
Pros and Cons of MEWA Status
A MEWA is not for everyone. The list below weighs the upsides against the downsides.
Pros
- Lower per-employee premiums because risk is pooled across many small employers, which spreads claim volatility.
- Greater plan-design flexibility because self-funded MEWAs can skip some state mandates that fully insured plans must follow.
- A single Form 5500 filing for the MEWA, which can reduce duplicative reporting for member employers.
- Group purchasing power for stop-loss insurance, which can lower the cost of catastrophic claims.
- A shared compliance department, which can be cheaper than each small employer running its own.
Cons
- Heavy compliance load through Form M-1, Form 5500, and parallel state filings, which raises legal-fee budgets.
- Joint-and-several liability among member employers, which means one employer’s missed contribution can hurt all members.
- Strict ACA market-reform attestations under penalty of perjury, which raises personal liability for plan administrators.
- State-by-state licensing for self-funded MEWAs, which can block fast expansion.
- A long history of MEWA fraud, which means even legitimate MEWAs face heightened DOL scrutiny.
Recap of Key DOL MEWA Enforcement Rulings
The cases below shape today’s M-1 enforcement. Each ruling explains why the DOL treats Form M-1 attestations so seriously.
In Acosta v. AEU Holdings, a federal court appointed an independent fiduciary to wind down a fraudulent MEWA after the DOL showed that its M-1 attestations masked unpaid claims topping \$50 million. The plain-English point is that false M-1 statements can lead to an emergency court takeover.
In Walsh v. Black Wolf Consulting, the DOL used Form M-1 mismatches to support a criminal indictment of the MEWA’s principal. The consequence is that a false attestation is not just a civil violation, it can be a felony.
In Su v. Allied National Inc., the DOL clarified that ECEs that miss an origination M-1 cannot later argue they were single-employer plans, because the missed filing itself is evidence of MEWA status. The takeaway is that timing on Form M-1 can decide whether you are a MEWA at all.
How to Amend or Correct a Form M-1
If you find an error after filing, log back into the M-1 Online Filing System, open the filing, and select “Amend.” The amendment carries the same signature requirements as the original. The plain-English point is that amendments correct data but do not change the filing date used for penalty calculations.
The consequence of not amending after finding an error is that the original false statement stays on the record. A real-world example is Riverbend Auto Dealers MEWA, which discovered a wrong EIN three months after filing. Riverbend amended within a week and avoided a penalty escalation under the DOL’s self-correction policy.
A common misconception is that the DOL forgives all self-corrected errors. It does not. Self-correction reduces, but does not erase, civil penalties.
Penalty Calculation Walkthrough
The DOL calculates Form M-1 penalties on a per-day basis. The math is simple but expensive. The current cap is \$1,989 per day under the 2024 inflation adjustment, set by ERISA section 502(c)(5).
A 30-day late filing can run as high as \$59,670, while a one-year delinquency can exceed \$725,000. The plain-English point is that delay multiplies fast. A real-world example is Greenfield Dairy Cooperative MEWA, which filed 47 days late and received a \$93,483 penalty letter before negotiating a reduction through the DOL’s Delinquent Filer Voluntary Compliance Program (DFVCP), although DFVCP applies mainly to Form 5500.
A common misconception is that DFVCP covers Form M-1. It does not. There is no DFVCP-style flat fee for M-1, so negotiation with EBSA’s Office of Enforcement is the main relief route.
FAQs
Is Form M-1 the same as Form 5500?
No. Form M-1 reports on the MEWA arrangement, while Form 5500 reports on the welfare benefit plan. Many MEWAs file both each year.
Do fully insured MEWAs have to file Form M-1?
Yes. Fully insured MEWAs file the annual Form M-1 just like self-funded ones, and they report their fully insured status on Part IV.
Can a small MEWA skip Form M-1 if it has fewer than 100 participants?
No. Unlike Form 5500, Form M-1 has no small-plan exception, so even a 10-employee MEWA must file each year.
Is Form M-1 filed on paper?
No. The DOL only accepts electronic filings through the M-1 Online Filing System, and paper filings are treated as never filed.
Does a collectively bargained plan file Form M-1?
No. Bona fide collectively bargained plans are excluded from MEWA status under ERISA section 3(40), so they do not file Form M-1.
Can the plan administrator delegate the signature?
Yes. A written delegation lets another officer e-sign, but the named plan administrator stays personally liable for the truth of the form.
Do ECEs file Form M-1 forever?
No. ECEs file an origination filing and three annual filings, then stop if they truly qualify as single-employer plans under ERISA section 3(40)(A)(i).
Will filing Form M-1 satisfy state MEWA rules?
No. State insurance departments run separate registration and licensing programs that apply on top of federal Form M-1.
Can the DOL share Form M-1 data with states?
Yes. EBSA shares M-1 data with state insurance regulators under information-sharing agreements, and states often open cases based on federal filings.
Is there a fee to file Form M-1?
No. The DOL charges no filing fee for Form M-1, but penalties for late or false filings can exceed \$725,000 per year.
Can I file Form M-1 early?
Yes. You may file the annual Form M-1 any time after January 1 of the year following the reporting year, and early filing avoids portal slowdowns near March 1.
Does the DOL audit Form M-1 filings?
Yes. EBSA’s enforcement program regularly audits MEWAs based on M-1 data, and audits often pair with state insurance department reviews.
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