COBRA does not protect a Part B enrollment window, and that is the mistake departing employees make.
For someone leaving your company at or near Medicare age, COBRA looks like the safe choice because nothing changes. Medicare’s rules treat it differently, and the order in which the two begin decides what each one covers. We walk departing employees through that before they elect anything.
The Part B clock starts when the job ends, not when COBRA does.
Medicare does not count COBRA as coverage based on current employment. That one rule reshapes the whole decision.
The Window
After active employment ends, a person has 8 months to enroll in Part B without penalty. Someone who spends a year and a half on COBRA before enrolling has missed it, which is why the conversation has to happen at departure.
The Penalty
A late Part B enrollment can bring a lifetime premium penalty and a wait for the general enrollment period, leaving a gap in coverage. COBRA ending does not reopen the window, so waiting it out does not help.
COBRA as the Second Payer
For someone already entitled to Medicare, Medicare generally pays first and COBRA second. If they skipped Part B, the plan may pay very little, so COBRA without Part B can be expensive half-coverage.
How Medicare timing is explained while people are still working →
Which came first, Medicare or COBRA, changes what COBRA does.
The federal COBRA rules treat Medicare entitlement differently depending on when it happens.
Medicare First, Then COBRA
Someone already entitled to Medicare when they leave can still elect COBRA. Medicare entitlement shortly before the qualifying event can also lengthen a spouse’s and children’s continuation period, which matters most for younger dependents.
COBRA First, Then Medicare
If someone elects COBRA and later becomes entitled to Medicare, the plan may end their COBRA. A spouse and children can keep theirs, so the family’s coverage has to be split rather than simply ended.
The Household, Not the Person
A spouse under 65 does not get Medicare because the employee did. For many families the answer is Medicare for one and COBRA or individual coverage for the other, which is why we look at the whole household.
One conversation at departure, with a written next step.
We meet with the departing employee, and HR gets a short summary of what was decided.
The Comparison
We set COBRA premiums against Medicare Parts B and D plus a supplement or Medicare Advantage plan, for the person’s own doctors and prescriptions, so they compare coverage and not only price.
The Dates
We write down the last day of coverage, the end of the Part B window and the Part D enrollment date, because people act on a date far more reliably than on a rule.
The Drug Coverage
COBRA drug coverage counts as creditable only if the plan’s coverage is creditable. We confirm the plan’s status, so someone who uses COBRA briefly does not later face a Part D penalty.
What departing employees ask.
Should I take COBRA if I am turning 65 soon?
Sometimes, briefly, for a spouse or to bridge to Medicare. The mistake is using it in place of Part B. We map the dates so COBRA fills a gap rather than creating one.
Doesn’t the COBRA notice explain this?
The election notice and the Part D creditable coverage notice carry part of it. Neither lays out the Part B window in terms someone can act on, which is why we add the conversation.
What if someone has already missed the window?
They can enroll in the next general enrollment period and may owe a penalty. We explain the options, check whether any special enrollment circumstance applies and point them to the official sources.
Send us your renewal.
We’ll tell you whether it looks competitive, where we see opportunity, and the five questions we’d put to your carrier. No cost, and no obligation to move anything.
The renewal letter
Your current plan summary
Contribution split by tier
Enrolled counts by tier
Four documents — two more if your group is 50 or more. Nothing else; every extra one is a reason to postpone.
An independent employee benefits consulting firm. We look at the entire benefits program — cost, plan performance, risk and administration.
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