How to Navigate COBRA Administration Through Justworks: A Practical Guide for Employers

When an employee leaves your company, COBRA kicks in. And if you’re on Justworks, the mechanics of how that plays out look different than if you were managing it in-house or through a standalone broker.

The good news: Justworks absorbs a significant portion of the compliance burden through the co-employment model. The less obvious news: you still own more of this process than you might assume. Reporting qualifying events, catching edge cases, and verifying that notices actually went out — those responsibilities don’t disappear just because you’re on a PEO platform.

This guide is specifically about how COBRA administration works when Justworks is your PEO. We’re not going to rehash federal COBRA law from scratch (if you need that foundation, our What Is a PEO resource covers the broader co-employment model). What we’re covering here is the actual process: what Justworks handles automatically, where you still need to pay attention, what the real costs look like, and where employers commonly trip up.

Whether you’re already on Justworks and want to make sure nothing falls through the cracks, or you’re evaluating the platform and COBRA handling is one of your decision factors, this is the guide you need.

Step 1: Understand What Justworks Actually Owns in the COBRA Process

This is the most important thing to get clear on before anything else: under the co-employment model, Justworks acts as the plan sponsor for your group health benefits. That’s not just a technical distinction. It means the primary COBRA administration responsibility shifts to Justworks, not you.

In practical terms, Justworks handles the heavy compliance machinery. Notice distribution, election tracking, premium collection from COBRA participants — that’s their lane. They typically work with a third-party COBRA administrator to manage the notice and election workflow, so you’re not personally generating compliance paperwork or chasing down former employees about their election decisions. For a deeper look at how Justworks handles regulatory obligations more broadly, our guide on Justworks PEO HR compliance services covers the full picture.

What you still own is the front end of the process. Specifically, you’re responsible for accurately reporting qualifying events and doing so on time. Justworks can’t send a COBRA election notice if they don’t know a qualifying event occurred. The platform captures most of this through the offboarding and status change workflow, but the accuracy of that data depends entirely on what you enter and when.

Think of it this way: Justworks runs the compliance engine, but you control the ignition. If you don’t report the right event at the right time, the engine doesn’t start.

There’s also a nuance worth understanding around liability. Because Justworks is the plan administrator, they bear primary responsibility for the downstream compliance obligations — sending notices within required timeframes, tracking elections, managing premium payments. But your obligation to report qualifying events accurately and promptly is a condition of that arrangement. If a compliance issue traces back to a late or inaccurate report from your side, that’s a different conversation than if Justworks dropped the ball on notice distribution.

Before any qualifying event occurs at your company, you should be able to clearly answer: What does Justworks handle automatically? What requires me to take action in the platform? Who do I contact if something looks wrong? If those answers aren’t clear, get them from your account rep now — not after someone leaves.

Step 2: Report Qualifying Events Correctly in the Justworks Platform

Not all qualifying events look the same, and they don’t all trigger the same COBRA coverage period. Getting this step right is where most employer-side compliance risk actually lives.

The common qualifying events you’ll encounter break down like this:

Termination or resignation: The most frequent trigger. Whether the employee was laid off or quit voluntarily, coverage ends and COBRA eligibility begins. This gets captured through Justworks’s standard offboarding workflow when you process the termination in the platform.

Reduction in hours: This one catches employers off guard more than any other. If a full-time employee drops to part-time and loses eligibility for the group health plan as a result, that’s a qualifying event — even though nobody was fired. Justworks won’t flag this automatically if you don’t update the employee’s hours or status correctly. You need to recognize this as a COBRA trigger and handle it through the appropriate status change workflow. Understanding how the Justworks HR technology platform processes these changes can help you avoid missed triggers.

Divorce or legal separation: If a covered spouse loses eligibility because of a divorce or legal separation, that’s a qualifying event for the spouse. The employee is still with you, but their ex-spouse becomes COBRA-eligible. This one often gets missed entirely because it doesn’t show up in any employment action.

Dependent aging out: When a dependent child reaches the age limit for coverage under your plan (typically 26 under the ACA), that’s a qualifying event for the dependent. Again, the employee isn’t going anywhere — but the dependent needs COBRA notification.

Medicare eligibility: If an employee becomes eligible for Medicare and drops off your plan, their covered dependents may become COBRA-eligible. Less common but worth knowing.

Federal law requires you to notify the plan administrator within 30 days of a qualifying event. For termination and reduction in hours, Justworks typically captures this through the offboarding or status change workflow in real time, so the 30-day clock is usually not a problem if you process changes promptly. The risk is delay — sitting on a termination for two weeks before entering it in the system.

For qualifying events that aren’t tied to an employment action (divorce, dependent aging out), the employee has 60 days to notify the plan administrator. Your job is to make sure your employees know this obligation exists. Justworks should provide general COBRA notices at enrollment that explain these requirements, but don’t assume employees read them.

One practical tip: document the qualifying event date precisely when you enter it. The compliance timeline — notice deadlines, election windows, coverage start dates — flows from that date. Getting it wrong by even a few days can create downstream exposure, even if Justworks handles everything else correctly.

Step 3: Verify That COBRA Notices Go Out on Time

Once Justworks receives notice of a qualifying event, federal law requires the COBRA election notice to go out within 14 days. Since Justworks is the plan administrator, the 14-day clock starts when they receive your report — not when the qualifying event actually occurred.

This is mostly automated through Justworks’s system, but “mostly automated” isn’t the same as “guaranteed.” You should verify that notices are actually going out, not just assume the process is running correctly in the background.

The practical way to do this: check your Justworks dashboard or contact your account representative to confirm that an election notice was generated and sent following a qualifying event. Most platforms have some form of activity log or notification confirmation. If you can’t see that confirmation, ask for it explicitly. Knowing what to expect from the Justworks account management model helps you understand who to contact and how responsive they’ll be.

There are two distinct COBRA notices worth understanding:

The general COBRA notice: This goes to every new employee and covered dependent when they enroll in the group health plan. It explains their COBRA rights broadly. Justworks should handle this during onboarding, but it’s worth confirming that new hires are receiving it — particularly if you’ve onboarded employees during a period of platform changes or benefit updates.

The COBRA election notice: This is the specific notice that goes out after a qualifying event. It tells the former employee or dependent what coverage is available, what it costs, and how long they have to elect (60 days from the notice date or the date coverage ends, whichever is later).

Why does verification matter if Justworks is handling this? Because the penalty exposure for late or missing notices is real. Under ERISA, the IRS can impose excise taxes of up to $100 per qualified beneficiary per day for non-compliance, and the Department of Labor can assess civil penalties separately. Even though Justworks administers the plan, you want a documented paper trail showing you reported the qualifying event on time. If a notice failure traces back to Justworks’s side, that’s a different liability picture than if the event was reported late from yours.

The point isn’t to micromanage Justworks. It’s to maintain enough visibility that you’d catch a problem before it becomes a penalty.

Step 4: Know What COBRA Actually Costs — For You and the Former Employee

COBRA participants pay the full cost of the premium plus a 2% administrative fee. Under federal law, that’s the maximum they can be charged — 102% of the full group premium. There’s no employer subsidy required unless you choose to offer one.

Under Justworks, the premium the COBRA participant pays is based on the group rate that Justworks negotiates across its client base. Because Justworks pools employees from many companies, their group rates are often more competitive than what a small employer could secure independently. That can make COBRA coverage through Justworks more affordable for departing employees than COBRA through a standalone small-group plan would be — though it’s still typically more expensive than active employee coverage, since the employer is no longer contributing.

For you as the employer, the ongoing cost of a COBRA participant is generally zero. You’re not contributing premiums for former employees on COBRA. The participant pays their full 102% directly, and Justworks manages the collection and remittance.

Where costs can get murkier: administrative fees. Check your Justworks service agreement to understand whether there are COBRA-specific administrative fees layered into your monthly per-employee charge, or whether COBRA administration is included in the base service. If you’re wondering whether the platform is worth it overall given these costs, our analysis of whether Justworks PEO is worth it digs into the full value equation.

There’s also the employer-subsidized COBRA question. Some companies offer to pay some or all of a departing employee’s COBRA premiums as part of a severance arrangement. If you’re doing this through Justworks, you need to understand how the payment flow actually works. Does Justworks facilitate employer-paid COBRA periods? Can you set up a defined subsidy period through the platform, or does this require a manual arrangement outside the system? Get clarity on this before you make a commitment to a departing employee — you don’t want to promise something and then discover the platform doesn’t support it cleanly.

For a broader view of how administrative costs like COBRA factor into overall PEO pricing, our PEO benefits administration resource breaks down how different providers structure their fees.

Step 5: Handle Edge Cases That Justworks Won’t Flag for You

Justworks handles the standard COBRA workflow well. The edge cases are where employer-side awareness matters most, because the platform won’t proactively alert you to situations it doesn’t know about.

State mini-COBRA laws: Federal COBRA applies to employers with 20 or more employees. But many states have their own continuation coverage laws that extend similar protections to smaller employers or provide longer coverage periods. California’s Cal-COBRA, for example, extends continuation coverage to 36 months for groups subject to state law. New York has continuation requirements for groups under 20 employees. Many other states have similar provisions, and they vary significantly in their requirements.

The critical question to ask Justworks directly: does your COBRA administration cover state continuation requirements in the states where your employees are based? Not all PEOs handle state-level continuation uniformly. Some outsource it, some handle it internally, and some leave it to the employer. Don’t assume Justworks’s COBRA administration automatically covers your state obligations — verify this explicitly with your account rep, especially if you have employees in multiple states. If you’re curious how another major PEO handles this same process, our guide on TriNet’s COBRA administration offers a useful comparison point.

Second qualifying events: If a COBRA beneficiary experiences a second qualifying event while already on COBRA, the coverage period can extend from 18 months to 36 months. For example, if an employee was laid off (first qualifying event, triggering 18 months of COBRA) and then the former employee’s spouse files for divorce during that COBRA period (second qualifying event for the spouse), the spouse’s coverage period can extend to 36 months.

Here’s the catch: you need to report this second qualifying event even though the original employee no longer works for you. The former employee or their dependent is responsible for notifying the plan administrator within 60 days of the second qualifying event. But you should understand this process exists so you’re not caught off guard if it comes up.

Disability extensions: If a COBRA participant is determined to be disabled by Social Security Administration within the first 60 days of COBRA coverage, the coverage period extends from 18 months to 29 months for all qualified beneficiaries in that household. The participant must notify the plan administrator of the disability determination before the 18-month period ends. Understanding the broader risk management and EPLI coverage Justworks provides can help you assess your overall liability exposure in these situations.

The broader point here: Justworks is a capable COBRA administrator for standard situations. But edge cases require you to stay informed and proactive. The platform doesn’t know your former employee got divorced six months after leaving. It doesn’t know a COBRA participant received a Social Security disability determination. That information has to come from somewhere, and often that means the participant or the employer needs to actively surface it.

Step 6: Evaluate Whether Justworks’s COBRA Handling Meets Your Needs

If you’re still in the evaluation phase, COBRA administration is a legitimate differentiator to assess — not just a checkbox.

Justworks handles COBRA through a co-employment structure with third-party administration support. For most small to mid-sized employers with moderate turnover, this works well. The standard workflow is automated, the notice process is managed, and the compliance burden on the employer is meaningfully reduced compared to handling it in-house.

But “works well for most” isn’t the same as “right for every situation.” A few questions worth asking directly during your evaluation or contract renewal:

Can you pull audit-ready COBRA documentation on demand? If you’re ever audited or face a complaint, you need to show that notices went out on time and that qualifying events were reported correctly. Ask whether Justworks can provide this documentation and how quickly.

What happens if a notice goes out late? Who bears liability — Justworks or the employer? The answer matters, and it should be in your service agreement, not just in a sales conversation. Reviewing the Justworks PEO lawsuits and legal history can give you context on how liability disputes have played out in practice.

How does Justworks handle state continuation requirements? As covered in the previous step, this varies. Get a specific answer for the states where your employees are located.

What’s the support process for COBRA-specific issues? If a former employee calls you saying they never received their election notice, what’s your path to resolution? Our review of Justworks PEO customer support covers what to expect from their support channels before you need them urgently.

Some PEOs use dedicated COBRA administrators with more robust tracking dashboards and employer-facing reporting. Others handle it more manually. If COBRA administration is a significant operational concern for your business — particularly if you have high turnover or employees in multiple states with complex continuation requirements — it’s worth comparing how different providers handle this specific workflow before committing or renewing.

Putting It All Together

COBRA administration through Justworks is largely automated — but “largely” isn’t the same as “entirely.” The platform handles notice distribution, election tracking, and premium collection, which removes a significant compliance burden from your plate. That’s genuinely valuable.

What it doesn’t remove is your responsibility to report qualifying events accurately and promptly, verify that notices are going out, understand state-specific requirements, and catch edge cases that the platform won’t surface on its own.

Before you close this tab, run through this quickly:

Qualifying event reporting: Do you know how to report each type of qualifying event in Justworks, including hour reductions and dependent-level events that aren’t tied to a termination?

Notice verification: Do you have a way to confirm that COBRA election notices are being sent within the required 14-day window after you report an event?

Cost structure: Do you understand what COBRA participants pay under your Justworks plan, and whether there are any COBRA-related administrative fees in your service agreement?

State requirements: Have you confirmed with Justworks whether state continuation laws in your employees’ states are covered under their COBRA administration?

Edge cases: Do you understand how second qualifying events and disability extensions work, and what your role is in surfacing them?

If any of those answers are fuzzy, that’s worth a conversation with your Justworks account rep before the next qualifying event hits.

And if you’re still evaluating whether Justworks is the right PEO for your business, COBRA handling is just one piece of a larger picture. Before you renew your PEO agreement, compare your options. Most businesses overpay due to bundled fees and unclear administrative markups. We break down pricing, services, and contract structures so you can make a smarter decision.