Turning 65 and Still Working? Here’s What Medicare Requires
If you are turning 65 and still employed, you may not need to enroll in Medicare right away. But the rules depend on your employer size. If you work for a company with 20 or more employees, you can typically delay Medicare Part B without a late enrollment penalty. However, you should almost always sign up for Medicare Part A, which is premium-free for most people. Here is how to navigate the decision so you avoid gaps, penalties, and surprises.
Does My Employer Size Affect When I Need Medicare?
Yes. Employer size is the single biggest factor in your Medicare timing decision. The key threshold is 20 or more employees.
- Employer with 20 or more employees: Your group health plan is considered primary. You can delay Part B enrollment without triggering a late enrollment penalty, as long as you have creditable coverage through your employer.
- Employer with fewer than 20 employees: Medicare becomes your primary payer at 65, regardless of whether you are still working. If you delay enrollment, you could face a late enrollment penalty and a gap in coverage.
If you are unsure whether your employer qualifies, check with your HR department. They can tell you whether your plan is considered creditable coverage, meaning it is at least as good as what Medicare provides.
Should I Sign Up for Part A Even If I Am Still Working?
For most people, the answer is yes. Medicare Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. It is premium-free if you or your spouse paid Medicare taxes for at least 10 years.
Enrolling in Part A does not cancel your employer coverage. It can work alongside your group plan to help cover costs.
However, there is one important exception: if your employer contributes to a Health Savings Account (HSA), enrolling in Part A will prevent future HSA contributions. If you rely on an HSA, talk to your employer and a licensed agent before enrolling in Part A so you can weigh the tradeoff.
What Happens with Part B If I Stay on My Employer Plan?
Medicare Part B covers doctor visits, outpatient services, and preventive care. It comes with a monthly premium. If you are still working and covered by a large employer plan, you can generally postpone Part B.
When you eventually leave your job or lose your employer coverage, you will have an 8-month Special Enrollment Period (SEP) to sign up for Part B without a late enrollment penalty. Miss that window, and you could face a premium increase of 10% for every 12-month period you were eligible but did not enroll.
The Special Enrollment Period is triggered by the end of your employer coverage, not by your retirement date. Mark that date on your calendar.
How Do Medicare and Employer Insurance Work Together?
When both Medicare and a group health plan cover you, coordination of benefits rules determine which plan pays first. The general rule:
- If your employer has 20 or more employees, your group plan pays first (primary) and Medicare pays second.
- If your employer has fewer than 20 employees, Medicare pays first (primary) and your group plan pays second.
This distinction matters because it affects how much you pay out of pocket. When Medicare is secondary, it may pick up costs your group plan does not fully cover, but only if you are enrolled.
What If I Am 65 and Also Receiving Social Security?
If you are already receiving Social Security benefits before you turn 65, you will be automatically enrolled in Medicare Parts A and B. Your Part B premium will be deducted from your Social Security check. If you want to decline Part B, you must actively opt out, otherwise you will be enrolled whether you want it or not.
If you are not yet receiving Social Security, enrollment is voluntary. You will need to sign up during your Initial Enrollment Period, a 7-month window that begins 3 months before the month you turn 65 and ends 3 months after.
Can I Switch from My Employer Plan to Medicare at Any Time?
Not at any time, but you do have flexibility. The main opportunities are:
- Initial Enrollment Period (IEP): 7 months around your 65th birthday. This is your first chance to sign up.
- Special Enrollment Period (SEP): 8 months after your employer coverage ends. This is the most common window for people who delay enrollment while working.
- Annual Enrollment Period (AEP): October 15 through December 7 each year. During this period, you can switch between Medicare Advantage plans or add Part D drug coverage.
If you miss these windows, you may have to wait until the General Enrollment Period (January 1 through March 31), and late enrollment penalties could apply.
What Should I Do Before My 65th Birthday?
Do not wait until the last minute. Here is a practical checklist:
- Check your employer plan size. Ask HR whether the company has 20 or more employees.
- Verify your coverage is creditable. Your employer plan must meet Medicare standards to avoid penalties.
- Decide about Part A. If you do not have an HSA, sign up. If you do, get advice first.
- Understand your SEP. Know when your employer coverage ends so you do not miss your 8-month window.
- Talk to a licensed agent. Medicare has moving parts. Getting guidance early helps you avoid costly mistakes.
How Trek Insurance Solutions Can Help
At Trek Insurance Solutions, we help people navigating the Medicare transition every day. Our licensed agents understand the nuances of working past 65 and can walk you through your options, whether that is enrolling now, delaying, or building a strategy that fits your situation.
We work with 7 organizations offering 42 products to find the right fit for your needs. No pressure, no one-size-fits-all approach, just clear guidance.
Call us at 888-960-0442 or visit trekis.net to schedule a free consultation.
Trek Insurance Solutions is a Third-Party Marketing Organization (TPMO). We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.