erisa-rights-and-medicare-coordination">Retiree Health Benefits Denied: ERISA Rights and Medicare Coordination

Retirees often count on employer-sponsored health coverage as a bridge to Medicare or as a supplement after Medicare begins. When those benefits are cut, reduced, or a claim is denied, the legal landscape is uniquely complex — involving both ERISA principles and Medicare coordination rules that can leave retirees paying bills they expected to be covered.

Are Retiree Health Benefits Vested Under ERISA?

This is the central legal question for retiree health benefits: unlike pension benefits, welfare benefits such as health coverage are generally not vested under ERISA. ERISA §1051(1) explicitly excludes welfare benefit plans from the vesting requirements that apply to pension plans.

This means, in principle, an employer can modify or terminate retiree health coverage — even after you retire — unless the plan or a collective bargaining agreement contains an enforceable promise that benefits will continue.

The M&G Polymers Case: The Yard-Man Doctrine Falls

For decades, courts applied the Yard-Man inference — the idea that when a collective bargaining agreement provided retiree health benefits, those benefits were presumed to vest for life. This gave union retirees powerful protection.

In M&G Polymers USA, LLC v. Tackett (2015), the U.S. Supreme Court unanimously rejected the Yard-Man inference. The Court held that ordinary principles of contract interpretation must govern, and courts cannot presume vesting. Instead, the specific language of the CBA and plan documents must clearly express an intent to vest benefits.

What this means for retirees:

• Employers can modify or terminate retiree health benefits unless the CBA or plan documents explicitly promise lifetime benefits
• Courts will look at the actual language of the agreement, not apply a favorable presumption
• However, if the agreement includes clear vesting language — or if prior representations to employees created enforceable promises — those commitments may still be binding

If your retiree health benefits have been cut or eliminated, an ERISA attorney should review your CBA and any prior plan documents, SPDs, and communications made to you before retirement.

When Employers Can and Cannot Change Benefits

Even without vested benefits, employers face some constraints:

ERISA fiduciary duty. Plan administrators must administer plans consistently with their terms and cannot selectively deny benefits to specific retirees for improper reasons.

Anti-discrimination laws. Under the EEOC's regulations implementing the ADEA, employers may generally provide retirees under 65 with different benefits than Medicare-eligible retirees, but cannot reduce benefits solely because a retiree becomes Medicare-eligible if that reduction violates the ADEA.

Reasonable modification. Even if an employer has the right to modify benefits, material changes typically require advance notice and may require plan amendment procedures outlined in the SPD.

Medicare Coordination: Primary vs. Secondary Payer Rules

Many retirees have both Medicare and an employer-sponsored plan. The rules determining which pays first — the Medicare Secondary Payer (MSP) rules — are complex and frequently misapplied.

For retirees (over 65, not actively employed): Medicare is the primary payer and the employer retiree plan is secondary. This means Medicare processes the claim first, and the employer plan pays only what Medicare doesn't cover.

Claims denied because of MSP errors:

• If the provider bills the employer plan first and it denies coverage because Medicare should have been primary, the provider must then bill Medicare
• If Medicare is billed but the claim is denied because the employer plan was supposed to be primary (rare for true retirees), there may be a coordination error
• If the employer plan denies a claim because it says Medicare should cover it but Medicare has already denied it, you need a written Medicare denial to present to the employer plan

Wrap-around coverage. Many retiree plans are designed to "wrap around" Medicare, covering cost-sharing (deductibles, copays, coinsurance) that Medicare doesn't. If your plan is denying cost-sharing claims that Medicare paid the primary benefit on, this is likely an error.

How to Appeal a Retiree Health Benefits Denial

Step 1: Gather your plan documents. Obtain your retiree health plan SPD, any CBA provisions, and any communications you received before or at retirement describing your benefits.

Step 2: Get the denial in writing. Ensure you have a written denial with specific reasons and the plan provisions cited.

Step 3: Review coordination of benefits rules. If Medicare is involved, obtain your Medicare EOB showing what Medicare paid or denied. Many retiree plan denials are simply COB errors.

Step 4: Appeal under the plan's procedures. The plan's SPD will describe the appeal process. Even though retiree benefits may not be vested, the ERISA procedural framework still applies, and you have the right to appeal.

Step 5: Consult an ERISA attorney if benefits were cut. If the denial reflects a plan change or termination, the analysis of whether vesting language exists requires legal review.

Fight Back With ClaimBack

Retiree benefit denials often involve COB errors, plan document ambiguities, or improper administration. ClaimBack helps you organize your appeal and identify the strongest arguments available.

Start your appeal at ClaimBack

Related Reading:

• How to Write an Insurance Appeal Letter
• Internal vs. External Insurance Appeal
• Common Reasons Insurance Claims Are Denied