COBRA Exposure Doesn't Start and End With Layoffs. Here's the Full List.
COBRA has seven qualifying events. Most benefits budgets are built around one of them.
The one everyone plans for is the layoff, because that's when claims spike and the stop-loss report makes it impossible to ignore. The other six don't announce themselves. They land one household at a time, they never show up in a turnover metric, and for a self-funded plan they carry the same feature the layoff does and nobody prices: continuation self-selects. The people who elect it are, on average, the people who expect to use it. So the events you aren't watching concentrate claims about as reliably as the one you are.
I came up through benefits operations before I ran product. Inside that function you don't see these as a tidy list of seven. You see them arrive one at a time, usually attached to someone having a hard month, and you watch how rarely anyone in HR is allowed to help with the coverage decision itself. Here's the full list, and why each one costs what it does.
The seven COBRA qualifying events
Federal law defines seven COBRA qualifying events. Here's the full list at a glance, then the detail on each.
Qualifying event | Who can elect | Max duration |
|---|---|---|
Termination of employment | Employee + covered dependents | 18 months |
Reduction in hours | Employee + covered dependents | 18 months |
Death of the covered employee | Spouse + dependents | 36 months |
Divorce or legal separation | Former spouse + dependents | 36 months |
Employee's Medicare entitlement | Spouse + dependents | 36 months |
Dependent child ages out | The dependent | 36 months |
Employer bankruptcy | Covered retirees + families | Open-ended |
(A disability extension can stretch an 18-month period to 29 months.)
Termination of employment
Voluntary or involuntary, with a narrow exception for gross misconduct. The employee and any covered dependents can continue for up to 18 months. This is the one you already watch, so we'll keep moving.
Reduction in hours
Drop someone below the hours threshold for plan eligibility (full-time to part-time, a furlough, a leave that ends coverage) and you've triggered a qualifying event, even though nobody left the company. Up to 18 months. It's easy to miss because there's no termination in the HRIS to key off of. Reductions in hours also cluster around the pre-retirement window, which connects them to the next few events on this list.
Death of the covered employee
The surviving spouse and dependents become qualified beneficiaries and can continue for up to 36 months. This is a family, often mid-treatment, making a coverage decision under the worst possible conditions. It's also the moment an HR team is least equipped to give useful guidance and most exposed if it improvises.
Divorce or legal separation
The former spouse loses eligibility and can elect divorce COBRA coverage for up to 36 months. The employee is still active and still on your plan, so nothing changes on the employment side. The exposure sits entirely on the dependent side, which is why this one is invisible in every headcount and turnover report you run.
The employee becomes entitled to Medicare
When a covered employee enrolls in Medicare, their spouse and dependents can qualify for up to 36 months of continuation. This skews older by definition, and older lives cost more. The interaction between Medicare entitlement and a later termination or reduction in hours has its own timing rules, which is a good reason to treat it as a compliance question rather than a judgment call.
A dependent child ages out
A child hits the plan's age limit (26 under the ACA) and loses dependent status, then can elect up to 36 months on their own. Of all the COBRA event categories, a dependent aging out is the most predictable. You can see it coming years out, down to the month. It's still routinely missed, because aging out doesn't feel like a "COBRA event" to anyone in HR or payroll.
Employer bankruptcy
A Chapter 11 filing that ends or substantially cuts retiree health coverage is a qualifying event for covered retirees and their families, with its own duration rules that can run open-ended. It's a narrow case. If you sponsor retiree coverage and you're restructuring, it stops being narrow fast.
One event, several clocks
The detail that changes the math: each qualified beneficiary elects independently. A death isn't one continuation decision. If the employee leaves a spouse and two children, that's three separate rights to your plan, each running up to 36 months, each with its own claims potential. Same event, three clocks. Your exposure isn't one decision per event. It's one decision per person.
The duration split isn't cosmetic either. Termination and reduction in hours run up to 18 months. The four beneficiary events (death, divorce or legal separation, the employee's Medicare entitlement, a dependent aging out) run up to 36, and a disability extension can stretch an 18-month window to 29. The events you plan for are the short ones. The quiet ones are the long ones, and they attach to the members who tend to cost the most. That pattern isn't a coincidence in the data. It's how the statute and the selection work together.
Why your HR team can't close this gap
Your HR team can identify every one of these events. What they can't do, and shouldn't, is tell the person whether COBRA is their best option or what to choose instead. That's licensed insurance guidance, and improvising it creates real liability. (We wrote separately about where that line sits in [What HR Can and Can't Say About Medicare].)
So the safe move, the one most teams default to, is mailing the packet and stepping back. That default is what produces the cost. The people most likely to keep an expensive plan are the people most likely to elect it, and no one in the process is positioned to point them toward coverage that fits better and costs less. For the mechanics of why those participants cost what they do, see [Adverse Selection, Explained].
What it looks like to handle the whole list
When was built to work off the full event set, not just terminations. The platform ingests reductions in hours, divorce and legal separation, dependents aging out, and employees approaching Medicare age, alongside standard exits. For each, the qualified beneficiary gets guidance from a licensed advisor and a side-by-side comparison against ACA and Medicare options, so fewer people default into continuation out of confusion. Your HR team flags the event; the coverage conversation happens where it's allowed to happen.
The exposure is already on your plan across all seven events, whether or not you're tracking six of them. The layoff is just the one that sends you an invoice.
Frequently asked questions
What are all the COBRA qualifying events employers need to track?
Federal law defines seven: termination of employment, a reduction in hours, death of the covered employee, divorce or legal separation, the covered employee becoming entitled to Medicare, a dependent child aging out of the plan, and (for retiree coverage) employer bankruptcy under Chapter 11. Each one creates a qualified beneficiary with the right to continue your health plan.
Beyond layoffs, what other COBRA events do employers face?
Six of the seven. Reductions in hours, death of the employee, divorce or legal separation, Medicare entitlement, a dependent aging out, and employer bankruptcy all trigger COBRA rights without a layoff. Several involve someone who never left the company, which is why they don't show up in a turnover metric.
Which COBRA qualifying events trigger 36 months of coverage instead of 18?
Termination and reduction in hours run up to 18 months. The four beneficiary events run up to 36: death of the covered employee, divorce or legal separation, the employee's Medicare entitlement, and a dependent aging out. A disability extension can stretch an 18-month period to 29.
Does COBRA apply to spouses and dependents independently?
Yes. Each qualified beneficiary elects independently and has their own coverage period. A spouse can continue coverage even if the employee declines, and a child aging out elects on their own. One event can create several separate continuation rights on your plan, each with its own clock.
How do COBRA costs differ by event type, and which have the highest per-person cost?
The events aren't priced by statute, but the pattern is consistent. Continuation self-selects: people elect it when they expect to use it. The beneficiary events (death, divorce, Medicare entitlement, aging out) either skew older or hit families mid-treatment, so they tend to concentrate higher claims than a routine voluntary exit. The longer 36-month duration compounds it.
