Skip to ContentSkip to Footer

Medicare and Employer Coverage

If you are 65 + (or turning 65 soon) and will have both Medicare and Employer Coverage too because you are still actively working, you have several things to consider.

Medicare coordinates benefits with your employer coverage.

You likely have options to keep your employer insurance, and Medicare will coordinate with that coverage. Before you choose to keep your employer insurance, you’ll want to compare the cost of that employer coverage against what it would cost you to switch to Medicare as your primary insurance.

Comparing these options will help you decide on which coverage option best fits your needs and budget. A thorough comparison can also help you avoid potential Medicare late-enrollment penalties wherever possible.

Again, this info below is for medicare ellible who are age 65 or older.

(Medicare coordination rules are different for people under age 65 or on Medicare due to disability.)

Active Employer Coverage

Active employer coverage means you are not retired and are still actively working.

If you are still working, you have the right to remain on your employer’s group health insurance plan if you choose.  Your Medicare benefits can coordinate with that coverage.

HOW Medicare coordinates depends on the size of your employer.

(These same rules apply if your group health coverage is through your spouse’s employer.)

Medicare and Employer Coverage – Large Companies (20+ Employees)

Medicare is secondary if you age 65 or older, you are still actively working (NOT retired. NOT on COBRA), and your employer has more than 20 employees.

This is called Medicare Secondary Payer. In this scenario, your group plan pays first, and then Medicare pays second. (People under age 65 on Medicare have different rules).

Most active employees with group coverage enroll in Part A if they have worked for at least 10 years. This is a common choice because Medicare part A is premium-free if an employee has worked at least 10 years.

Part A can coordinate to lower your costs if you have a hospital stay. In 2020, the Medicare Part A hospital deductible is $1,408. If you have a hospital stay in 2020 and if, for example, your employer’s health plan has a $3000 deductible, when you have both your employer insurance and Part A, you would only pay $1,408 out of your own pocket. Medicare would cover any remaining Part A services.

It doesn’t necessarily work the same way with Part B, and Part B costs money (see next section), so that’s why most people choose Part A only when working for a large employer.

[One exception would be if you are contributing to an HSA account and plan to continue doing so. If that’s the case, do not enroll in Part A. Read more on that below.]

Medicare as Secondary Insurance Costs Money

Medicare Part B is not premium-free.

The monthly premium you pay for Part B is based on your income.

Some people eligible for Medicare and employer group health coverage choose to delay enrolling in Medicare Part B and Part D while still covered on their group health coverage (or their spouse’s group health coverage).

This saves them the premiums they would have paid for those parts. Your employer coverage already includes outpatient benefits, so it may not be worth it to pay those Part B and D premiums. This can only be determined by thoroughly comparing plans, however. 

When you DO delay Part B, your large group plan is considered creditable coverage. That means that you can enroll in Part B later without incurring a late penalty fee when you decide to retire. Once you quit and leave the group plan, your insurance company will mail you a creditable coverage letter. REMEBER TO KEEP THIS. You will need it to show Medicare that you had other coverage so that you are not subject to late penalties for Parts B and D.

What Happens if You Retire and then Later Go Back to Work?

Many people want to know what happens if they retire, get Part B, and then later get a new job with employer insurance. You can cancel Part B at that time. Later when you retire again, you’ll have a second 6-month open enrollment window to get a Medigap plan with no health questions asked.

A Word About COBRA

Medicare coordinates differently with COBRA than it does with active coverage. This is important because if you get this wrong, you will owe penalties. 

When you are still actively working at a large employer, their Group Insurance pays primary and Medicare pays secondary.

The opposite is true of COBRA. Medicare pays first and COBRA pays second.

If you are under 65 and on COBRA, when you turn 65 you must enroll in Part A and B during your Initial Enrollment Period. You need to enroll because Medicare will be your primary coverage and COBRA only pays as secondary. Failure to enroll during your IEP will result in a lifelong penalty. You can keep COBRA if you like and let it pay secondary instead of a Medigap plan. Just be sure you don’t miss enrolling in both Part A and Part B during your Initial Enrollment Period, which begins 3 months before your 65th birthday month and ends 3 months after your 65th birthday month.

If you work past age 65 and then you retire, you must enroll in Part B no later than your 8th month on COBRA insurance, even if COBRA continues beyond that. Failure to do so can result in a permanent late enrollment penalty for Part B. Even worse, it could delay your Medicare Part B until July of the following year. You do not want to find yourself in a situation where you have to wait months to buy Part B.

The Option to Choose Medicare as your Primary Insurance

People with large group employer insurance also have another option. You can leave your group health plan and choose Medicare as your primary insurance, and then add a Medigap plan. This can often be a less expensive option for you or your spouse. For many people, it will also reduce deductibles and eliminate all doctor copays.

Whether this is cost-effective depends on how much your employer coverage costs you each month in your payroll deductions. Your plan deductible, copays, and your medication usage also are factors. If you are married and one spouse is younger, you must also consider the cost of health insurance for the spouse of the Medicare recipient

Your Senior Insurance Solutions agent can help you decide if you should enroll in Part B now or later. We often meet people that we advise staying with their group plan for now if that makes more sense.

For the most accurate and up-to-date information regarding Medicare and employer coverage, click here.

Our Services Are Completely FREE.

No Cost, No Obligation.

Get A Quote

* indicates required fields

This field is for validation purposes and should be left unchanged.

Customer Reviews

Avery & Senior Insurance Solutions saved me a lot of money on my medicare...

Charlie M
Charlie M

I refer all my friends and relatives to Avery & Senior Insurance Solitions...

Elaine B
Elaine B

I have been with Avery and Senior Insurance Solutions for over 10 years...

Shirley R
Shirley R

...I am very grateful for his help.

Phyllis L
Phyllis L

...It has saved me a lot of money.

Lawrence C
Lawrence C