Medicare and Employer Insurance
How Medicare works if you are still working at age 65
Written by Walter Johnson, Licensed Insurance Agent
This article is for educational purposes only and is not a solicitation for insurance
OFFICIAL 2026 EDUCATIONAL RESOURCE BY WALTER JOHNSON, LICENSED INSURANCE AGENT (CA #0J15814).
How Medicare works if you are still working at age 65
Written by Walter Johnson, Licensed Insurance Agent
This article is for educational purposes only and is not a solicitation for insurance
Learn how Medicare works if you are still working at age 65, including employer insurance, when to enroll, and how to avoid penalties.
Medicare and Employer Insurance: What You Need to Know
If you are still working at age 65 and have employer-sponsored health insurance, you may not need to enroll in Medicare right away.
However, the decision depends on your specific situation, including the size of your employer and the type of coverage you have.
Understanding how Medicare works with employer insurance can help you avoid penalties and coverage gaps.
👉 Start here: What Is Medicare?
Can You Delay Medicare If You’re Still Working?
Yes, in many cases you can delay enrolling in Medicare Part B if you have qualifying employer-sponsored health coverage.
This is common for people who:
Continue working past age 65
Have health insurance through their employer
Are covered under a spouse’s employer plan
Delaying Medicare in these situations may allow you to avoid paying unnecessary premiums.
👉 Learn more: When to Enroll in Medicare
Employer Size Matters
One of the most important factors is the size of your employer.
If your employer has 20 or more employees:
Your employer insurance is typically primary
Medicare is secondary
You may be able to delay Part B
If your employer has fewer than 20 employees:
Medicare is usually primary
Employer insurance is secondary
You may need to enroll in Medicare at age 65
Failing to enroll in this situation could result in coverage gaps.
How Medicare Works with Employer Insurance
When you have both Medicare and employer insurance, the two coordinate benefits.
This determines:
Which plan pays first
How much you pay out of pocket
What services are covered
Understanding coordination of benefits helps prevent unexpected costs.
Special Enrollment Period for Workers
If you delay Medicare due to employer coverage, you may qualify for a Special Enrollment Period (SEP).
This allows you to enroll:
After your employment ends
After your employer coverage ends
Without facing late enrollment penalties.
👉 Learn more: Medicare Special Enrollment Period
Risks of Delaying Medicare
While delaying Medicare can make sense in some situations, there are risks if done incorrectly.
These include:
Late enrollment penalties
Gaps in coverage
Limited enrollment windows
It is important to confirm that your current coverage qualifies before delaying Medicare.
👉 Learn more: Medicare Late Enrollment Penalty Explained
Should You Enroll in Part A While Working?
Some people choose to enroll in Medicare Part A even if they are still working.
This is because:
Part A is often premium-free
It may provide additional hospital coverage
However, enrolling in Part A may affect your ability to contribute to a Health Savings Account (HSA).
Why This Decision Matters
Choosing whether to enroll in Medicare while working can impact:
your healthcare costs
your coverage
your long-term financial planning
Making the wrong decision can lead to penalties or gaps in coverage.
Next Step
Now that you understand how Medicare works with employer insurance, the next step is deciding whether you need Medicare if you are still working.
👉 Continue to: Do You Need Medicare If You’re Still Working?
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