Enrolling in Medicare After Working Past 65: What You Need to Know
Still working at 65? Learn how and when to enroll in Medicare to avoid late penalties and get the right coverage when you’re ready to retire.
Turning 65 doesn’t mean you have to retire—but it does mean you need a Medicare plan.
Many people are working well past age 65—and that’s great! But when it comes to Medicare, delaying enrollment without the right knowledge can lead to big mistakes, late penalties, or gaps in coverage.
This post is for working professionals who plan to stay on the job—or who already have—and want to make smart, penalty-free decisions about Medicare.
Do You Need to Enroll in Medicare at 65 If You’re Still Working?
The Basics: Employer Coverage vs. Medicare
If you or your spouse are still working and covered under an active employer group health plan, you may be able to delay Medicare without penalty. But it depends on:
- The size of your employer (20+ employees vs. fewer than 20)
- Whether you have credible coverage
- How your group plan coordinates with Medicare
Why Size Matters
- 20+ Employees: You can delay Medicare Part B (and Part D) without penalty, as your employer coverage is considered primary.
- Fewer Than 20 Employees: You should enroll in Medicare at 65, as Medicare becomes primary. Not enrolling could leave you with no coverage for major expenses.
Real Example: John’s Smith’s Transition
John turned 65 last November but kept working as a CPA at a mid-sized firm. His employer had over 100 employees, and his health plan was excellent.
Here’s what John did:
- Enrolled in Part A at 65 (it’s free after paying Medicare taxes and could help during hospital stays).
- Delayed Part B and Part D, since his employer plan covered doctor visits and prescriptions.
- When he retired at 67, he enrolled in Part B and Part D during his Special Enrollment Period (SEP)—with zero penalties.
Because John planned ahead, he had no lapse in coverage, no late fees, and a plan that fit his needs at every stage.
Step-by-Step: What to Do If You're Working Past 65
Step 1: Understand Your Employer Coverage
Ask HR if your plan qualifies as creditable coverage for Medicare Parts B and D.
Step 2: Decide If You Want Part A
Many people enroll in Part A at 65 since it’s premium-free. But if you have an HSA, talk to an advisor—Part A currently makes you ineligible to contribute to your HSA.
Step 3: Know When to Enroll
You get a Special Enrollment Period (SEP) when you retire or lose employer coverage. It lasts 63 days after your employer coverage ends.
Missing these deadlines can mean lifetime penalties.
Step 4: Get Help Choosing the Right Plan
When you’re ready to transition, an advisor can help:
- Compare Medicare Advantage and Supplement options
- Review your prescriptions for drug coverage
- Time your enrollment to avoid gaps
FAQs About Enrolling in Medicare After 65
What happens if I wait too long to enroll in Medicare?
If you don’t have creditable coverage and miss your enrollment window, you could face late penalties for life on Part B and Part D.
Can I keep my employer plan and enroll in Medicare too?
Yes, but it may not make financial sense. Medicare can be secondary or primary, depending on your company size.
Just because you’re still clocking in doesn’t mean you can ignore Medicare. With the right guidance, you can avoid penalties, protect your health, and plan your future with confidence.
Ready to take the guesswork out of Medicare?
Our experienced Medicare advisors specialize in helping professionals working past 65 make confident, penalty-free decisions.
