Employer Changing Health Insurance Plans: Your Rights

Your employer just told you the health insurance plan is changing — maybe with a few weeks' notice, maybe with almost none. If your company was recently acquired, this situation is especially common and especially disorienting. You may not know whether what happened is even legal, what your options are, or whether you need to act right now before losing coverage you depend on. This article explains what the law actually requires, what rights you have no matter what your employer did or didn't do, and how to decide whether to stay on the new plan, use COBRA, or find coverage somewhere else entirely.

What the law requires when an employer changes health insurance plans

Federal law — specifically ERISA, the Employee Retirement Income Security Act — requires employers to notify you when a health plan changes in a significant way. The key document is called a Summary of Material Modification (SMM), which is a written notice describing what changed. For most material changes, employers are required to provide the SMM within 60 days after the change takes effect. For certain changes, such as a reduction in benefits, the law requires notice before the change goes into effect.

That timeline can feel frustrating, because it means that in many cases your employer is technically complying with federal law even if you only found out about a change a few weeks before — or even after — it happened. However, when a plan change is triggered by a business event like a company acquisition or merger, the rules and timelines can differ. These situations are complex enough that whether any specific notice was legally sufficient depends on the details of your plan, your employer's structure, and how the transaction was handled.

What you're entitled to receive

Regardless of how you were notified, you have the right under ERISA to request and receive the following documents:

• Summary of Benefits and Coverage (SBC): A standardized, easy-to-read overview of what the plan covers, what it costs, and what it excludes. Employers must provide this automatically when you enroll and when a plan changes.
• Summary Plan Description (SPD): A more detailed document explaining how the plan works, your rights, and the plan's rules. You have the right to request this at any time.
• Full plan documents: If you want the complete plan document beyond the SPD, you can request that too.

Your employer is legally required to provide these. If they don't respond to a written request within 30 days, they can be subject to a penalty of up to $110 per day under ERISA.

What to do if your employer isn't giving you documents

Start by making your request in writing — email is fine — so you have a record. Address it to HR or your benefits administrator and keep a copy. If you don't get a response within 30 days, you can file a complaint with the U.S. Department of Labor's Employee Benefits Security Administration (EBSA). Filing a complaint does not require a lawyer and does not mean you're suing your employer — it is a formal way to invoke your rights under federal law.

Your COBRA rights when a plan is terminated or changed

If your employer terminates the existing health plan — which is different from modifying it — that is a qualifying COBRA event. COBRA (Consolidated Omnibus Budget Reconciliation Act) is a federal law that gives you the right to continue your existing coverage for a period of time after losing it, as long as your employer has 20 or more employees.

How COBRA timing works — and why you don't have to decide immediately

You have 60 days from the date you receive your COBRA election notice to decide whether to enroll. Here is the part most people don't know: if you enroll at any point within that 60-day window, your coverage is treated as continuous from the date it ended. This means you can wait up to 60 days, see whether you have any medical needs, and then retroactively elect COBRA — and the insurer must cover any claims that fall within that window.

This does not mean COBRA is free. You will owe all premiums back to the start date. But it does mean you are not forced to pay months of expensive COBRA premiums up front just to protect yourself. If nothing happens medically, you can decline COBRA and pay nothing. If something does happen, you can elect and pay retroactively.

How much does COBRA cost?

COBRA is almost always expensive. When you were employed, your employer was likely paying a significant share of your monthly premium. Under COBRA, you pay the entire premium — your share plus what the employer was paying — plus a 2% administrative fee.

Example: If your monthly health insurance premium was $600 total, and your employer was paying $450 while you paid $150 through payroll deduction, your COBRA premium would be approximately $612 per month (the full $600 plus 2%). That's a $462 jump in what you're paying out of pocket each month.

COBRA can still be the right choice — especially if you are mid-treatment, if your doctors are in-network, or if your deductible is mostly met for the year. But it is not automatically the right choice, and it is worth comparing it carefully to other options.

Your Special Enrollment Period rights on the ACA marketplace

If your employer changes or terminates your health coverage, you likely qualify for a Special Enrollment Period (SEP) on the ACA marketplace (also called the health insurance exchange). An SEP is a window outside the annual open enrollment period during which you can sign up for a marketplace plan because of a qualifying life event.

Losing or significantly changing employer-sponsored coverage counts as a qualifying life event. A company acquisition that results in a plan change can also qualify. You generally have 60 days from the qualifying event to enroll in a marketplace plan.

Marketplace plans may be significantly less expensive than COBRA, particularly if your household income qualifies you for premium tax credits (also called subsidies). These credits reduce your monthly premium, sometimes substantially. You can check your eligibility and browse plan options at Healthcare.gov (or your state's marketplace if your state runs its own).

One important note: if you are still enrolled in employer-sponsored coverage — even a plan you don't like — you may not qualify for marketplace subsidies unless that coverage is considered unaffordable or inadequate under ACA standards. If the new plan your employer is offering meets the ACA's minimum standards, you may need to evaluate whether declining it is worth losing subsidy eligibility.

How to compare your options: new employer plan vs. COBRA vs. marketplace

Before you make any decision, you need to compare your actual costs and coverage across all three options. Do not compare monthly premiums alone — that number tells you very little about what you'll actually spend.

The three numbers that matter most

• Monthly premium: What you pay every month whether or not you use care.
• Deductible: What you pay out of pocket before your insurance starts covering most services. (See our guide to deductibles, copays, and coinsurance if these terms are unfamiliar.)
• Out-of-pocket maximum: The most you'll ever pay in a plan year, after which insurance covers 100% of covered services.

Example comparison: Suppose the new employer plan has a $180/month premium, a $4,000 deductible, and a $7,000 out-of-pocket maximum. COBRA on the old plan costs $612/month, but you've already paid $2,500 toward your $3,000 deductible this year. In that case, COBRA may be worth the higher premium for the rest of the year, because you're close to meeting your deductible and your providers are already in-network. If it's January and you're starting fresh, that math looks very different.

Network and plan type

If the new plan is a different type than what you had — for example, switching from a PPO (which lets you see any doctor) to an HMO (which requires referrals and limits you to a network) — that matters enormously if you have existing doctors or ongoing treatments. Our guide to HMO vs. PPO vs. EPO plans can help you understand the practical differences.

Before accepting the new plan, verify that your current doctors, specialists, hospitals, and any facilities where you are receiving ongoing care are in-network. Call the provider directly — do not rely solely on the insurer's online directory, which can be outdated.

Specific needs and coverage gaps

If you are managing a chronic condition, receiving ongoing treatment, or have upcoming planned procedures, review the new plan's coverage carefully. Request the SBC and look at the coverage for your specific services. If anything is unclear, call the insurer directly and ask them to confirm coverage in writing.

If you are involved in a surrogacy arrangement as a surrogate or as an intended parent, be aware that this is an area of particular complexity. Most employer health plans do not explicitly cover surrogacy-related care for the surrogate, and how costs are handled is typically governed by the surrogacy contract between the surrogate and the intended parents — not by the surrogate's own health insurance. This is a legal and contractual issue that varies significantly by state and by individual plan. If this applies to your situation, consult with your surrogacy agency and an attorney who specializes in reproductive law before making any coverage decisions.

What to do right now: a step-by-step action plan

1. Find out exactly what happened and when. Was the plan changed or terminated? What was the effective date? When were you notified? Write this down.
2. Request your documents in writing. Email HR today and ask for the SBC and SPD for both the old plan and the new plan. Keep the email.
3. Check your COBRA notice. If the old plan was terminated, you should receive a COBRA election notice. Note the deadline — 60 days from that notice date — and put it on your calendar. You do not have to decide today.
4. Check your SEP window. Log in to Healthcare.gov or your state marketplace and see what plans are available to you. Even if you don't enroll, knowing your options gives you leverage.
5. Compare the three options using the total cost framework above — premium, deductible, and out-of-pocket max — alongside network and specific coverage needs.
6. If you're not getting answers, escalate in writing within HR, then file a complaint with the DOL's EBSA if necessary.

You are not powerless here. Federal law gives you specific rights — to information, to continuation coverage, and to a window to find alternative coverage. The most important thing you can do right now is slow down, get the documents you're owed, and compare your options before the deadlines pass.

Sources: U.S. Department of Labor — ERISA and Summary of Material Modification requirements, U.S. Department of Labor — COBRA Continuation Coverage, Healthcare.gov — Special Enrollment Periods, U.S. Department of Labor — Your Right to Request Plan Documents under ERISA