Working Past 65: When can you safely delay Medicare?
Continuing to work past 65 does not automatically exempt you from Medicare rules. Whether you can safely delay Part B without lifetime penalties depends entirely on employer company size, active work status, and HSA contributions.
The 20-Employee Rule: Who Pays First?
Federal Medicare secondary payer regulations hinge strictly on company headcount. Understanding your employer's exact classification is critical before declining Part B.
Employer Plan Pays Primary
If your employer (or your working spouse’s employer) has 20 or more employees, the group health plan pays first and Medicare pays secondary. You can generally delay Medicare Part B without incurring a late enrollment penalty, provided the coverage is based on active, current employment.
Medicare Pays Primary
If your employer has under 20 employees, Medicare is the primary payer for your medical bills. If you do not enroll in Part A and Part B at age 65, your employer plan may refuse to pay claims that Medicare would have covered, leaving you with massive out-of-pocket medical bills.
4 Traps That Trigger Penalties or IRS Tax Bills
Federal coordination rules are unforgiving. Watch out for these four common assumptions that cause financial damage:
COBRA Coverage Is NOT Active Employment
Many Texans mistakenly believe COBRA counts as creditable coverage for delaying Part B. It does NOT. If you rely on COBRA after leaving a job and delay Part B past your 8-month Special Enrollment Period, you will face lifelong late penalties and coverage gaps.
Retiree Health Insurance Is NOT Primary
Retiree coverage is not active current employment coverage. Once you turn 65, retiree plans require you to be enrolled in both Medicare Part A and Part B to receive secondary benefits.
Health Savings Account (HSA) Contribution Pitfall
Under IRS rules, you cannot make contributions to an HSA once enrolled in any part of Medicare (including premium-free Part A). Furthermore, Part A enrollment can be retroactive up to 6 months (after age 65), meaning you must stop HSA contributions 6 months prior to applying.
Prescription Drug (Part D) Creditable Notice
Your employer must provide an annual written notice stating whether their group prescription drug coverage is "creditable" (at least as good as standard Medicare Part D). Keep this letter safe for proof of coverage.
5 Questions to Ask Your HR or Benefits Manager
Before deciding to delay Part B or drop your group policy, ask your human resources department for clear written answers to these five essential questions:
Does our company employ 20 or more workers during 20 or more calendar weeks this year or last year?
Does our group health plan pay primary to Medicare for employees and covered spouses age 65+?
Is our prescription drug benefit certified as "creditable coverage" under CMS guidelines?
What are my total monthly premiums and deductibles compared to Medicare Part B + Supplement/Advantage?
If I enroll in Medicare Part A and B, can my younger spouse remain on our employer group health plan?
Confirmed Texas Medicare Carriers Represented
Fortify360 is contracted and authorized to represent top-tier national and Texas regional Medicare carriers.
UnitedHealthcare
Aetna
Cigna Healthcare
Humana
Devoted Health
Prominence Health Plan
Wellcare by CenteneFrequently Asked Questions About Working Past 65
How do I enroll in Part B when I finally decide to retire?
You qualify for an 8-month Special Enrollment Period (SEP) starting the month after your employment ends or group health plan ends, whichever occurs first. You will submit Form CMS-40B (Application for Enrollment in Part B) and Form CMS-L564 (Request for Employment Information completed by your employer) to Social Security.
Should I take Part A at 65 even if I keep working?
For most people with 40 quarters of Medicare taxes, Part A has $0 premium, so enrolling at 65 is common. However, if you or your employer contribute to a Health Savings Account (HSA), taking Part A will immediately disqualify you from tax-free HSA contributions.
Can I drop employer coverage and choose Medicare instead?
Yes. Often, comparing your employer group premium, deductibles, and family copays against Medicare Part B plus a Medigap or Medicare Advantage plan reveals that Medicare provides broader doctor access and lower out-of-pocket costs. Eric can model this comparison for you.