Medicare vs Employer Coverage: Which Should You Choose at 65?
"I'm turning 65 but still working. Should I keep my employer coverage or switch to Medicare?"
This is one of the most confusing Medicare decisions. The answer depends on several factors.
The Basic Rule: Company Size Matters
Large employer (20+ employees):
✅ Can delay Medicare Part B without penalty
✅ Enroll when you retire
✅ Must enroll within 8 months of leaving job
Small employer (under 20 employees):
❌ Must enroll in Medicare at 65
Medicare becomes your primary insurance
Employer plan becomes secondary
This is the #1 thing people get wrong.
Why Company Size Matters
Federal law determines which insurance pays first:
20+ employees: Employer plan pays first, Medicare second (if you have it)
Under 20 employees: Medicare pays first, employer plan pays second
If you're with a small employer and don't enroll in Medicare, your employer plan may deny claims (expecting Medicare to pay first).
Option 1: Keep Employer Coverage (If Large Employer)
Advantages:
✅ May have lower premiums
✅ May cover spouse and dependents
✅ No Part B premium ($185/month = $2,220/year saved)
✅ Familiar coverage
Disadvantages:
❌ Coverage tied to employment
❌ May have high deductibles
❌ Employer could change/drop coverage
❌ COBRA is expensive if you're laid off
Best for:
Employer pays most of premium
Good coverage with low out-of-pocket
Planning to work several more years
Covering family members
Option 2: Switch to Medicare at 65
Advantages:
✅ Not tied to employment
✅ Can't be canceled
✅ Consistent coverage
✅ May have lower out-of-pocket costs
✅ Prescription coverage available
Disadvantages:
❌ Pay Part B premium ($185/month)
❌ Need separate coverage for spouse (if under 65)
❌ May need to buy Part D and Medigap
Best for:
Employer coverage is expensive
High deductibles on employer plan
Planning to retire soon
Want guaranteed coverage
Comparing the Costs: Real Example
John, age 65, still working
Option A: Keep Employer Coverage
His premium: $200/month = $2,400/year
Deductible: $3,000/year
Out-of-pocket max: $6,000/year
Worst case: $8,400/year
Option B: Switch to Medicare
Part B premium: $185/month = $2,220/year
Medicare Advantage plan: $0
Deductible: $257
Max out-of-pocket: $8,000 (if hits it)
Typical year: ~$2,500-3,000/year
John's decision: Switched to Medicare, saved $5,000+ per year
What About Part A?
Most experts recommend: Enroll in Part A at 65 even if keeping employer coverage.
Why:
It's free for most people
Provides backup hospital coverage
No downside (used to affect HSAs, but not after 65)
Exception: If you're contributing to an HSA, enrolling in Part A makes you ineligible. Stop HSA contributions 6 months before enrolling in Part A.
Health Savings Accounts (HSAs) and Medicare
You can't contribute to an HSA once you enroll in any part of Medicare.
What to do:
Stop HSA contributions 6 months before enrolling in Medicare
You can still use HSA funds for medical expenses (including Medicare premiums)
Retroactive Part A: Part A can be retroactive up to 6 months, which could create HSA contribution issues.
Getting the Creditable Coverage Letter
This is CRITICAL if you delay Medicare.
Get a letter from your HR department stating:
Your coverage is creditable (as good as Medicare)
Start and end dates
Number of employees at the company
That it's active employment (not COBRA or retiree coverage)
You'll need this when you enroll in Medicare later to avoid penalties.
When You Should Definitely Enroll in Medicare at 65
Small employer (under 20 employees):
Medicare MUST be primary
Your employer plan becomes secondary
Not enrolling causes claim denials
High employer premiums:
If you pay $300+/month for employer coverage
Medicare may be much cheaper
Poor employer coverage:
High deductibles ($5,000+)
Limited networks
Bad prescription coverage
Planning to retire within a year:
Avoid transition complications
Get familiar with Medicare while still working
When to Consider Keeping Employer Coverage
Excellent employer coverage:
Low premiums (under $100/month)
Low deductibles (under $1,500)
Covers your spouse
Working several more years:
Postpone Part B premiums
Save $2,220/year per year delayed
Family coverage needs:
Spouse under 65 needs coverage
Medicare doesn't cover spouses
The Transition: Employer to Medicare
When you're ready to retire:
2-3 months before last day:
[ ] Apply for Medicare Part B
[ ] Choose Medicare Advantage or Supplement + Part D
[ ] Enroll in chosen plan
Last day of work:
[ ] Get final creditable coverage letter with end date
[ ] Note when employer coverage ends
After leaving:
[ ] Submit creditable coverage letter to Social Security
[ ] Ensure smooth transition to Medicare
[ ] Cancel employer coverage (don't keep both)
COBRA vs Medicare
COBRA is NOT creditable coverage for delaying Medicare.
If you're thinking about taking COBRA at 65: Don't. Enroll in Medicare instead.
Why:
COBRA is expensive (102% of full premium)
Doesn't extend your Medicare enrollment period
Medicare is usually better and cheaper
Common Mistakes
❌ Assuming your employer HR knows Medicare rules
✅ Many HR departments give wrong advice—verify independently
❌ Counting COBRA as employer coverage
✅ COBRA doesn't count—enroll in Medicare
❌ Not getting a creditable coverage letter
✅ Get it before you leave your job
❌ Enrolling in Part A without stopping HSA
✅ Stop HSA contributions 6 months before Part A
❌ Thinking company size doesn't matter
✅ Under 20 employees = must enroll at 65
Questions to Ask Your HR Department
"How many employees does our company have?" (Answer affects Medicare rules)
"Is our health coverage considered creditable coverage for Medicare?"
"Can you provide a creditable coverage letter?"
"What happens to my coverage when I turn 65?"
"If I delay Medicare, what do I need to do?"
Real Temecula Examples
Maria (small company, 12 employees):
Tried to keep employer coverage at 65
Claims were denied (Medicare should have paid first)
Had to enroll in Medicare retroactively
Messy situation
Robert (large company, 200 employees):
Kept employer coverage until 68
Got creditable coverage letter
Enrolled in Medicare within 8 months of retiring
No penalties, smooth transition
How I Help
I'll help you:
✅ Determine your employer size and Medicare obligations
✅ Compare employer coverage costs vs Medicare
✅ Calculate total annual costs both ways
✅ Plan your transition timeline
✅ Review your creditable coverage letter
✅ Enroll in Medicare when the time is right
FREE consultation
📞 (951) 840-1099
📧 matt@wieczorekinsure.com
Bring: Employer coverage summary, HR contact info, questions
The Bottom Line
There's no one-size-fits-all answer:
Large employer + good coverage = may delay Medicare
Small employer = must enroll at 65
Expensive employer coverage = switch to Medicare
Always get creditable coverage letter
The decision affects your coverage and your wallet. Let's make sure you choose wisely.
Matt Wieczorek | Licensed CA Insurance Agent #4335496 | Temecula, CA
Still working at 65? Let's figure out your best path forward.
