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Ask Ms. Medicare

Medicare When Working Beyond 65

Do you need to enroll in Part B if you have health insurance from an employer?

En español | Q. I am 65 and plan to keep working for some years. I have health insurance from my employer. Do I have to sign up for Medicare Part B now?

See also: Medicare starter kit. What you most need to know.

A. Probably not. In most cases, for as long as you have group health insurance provided by an employer for whom you are still working, you can delay enrolling in Part B, which covers doctors visits and other outpatient services and requires a monthly premium. When you eventually retire, or leave work, you'll be entitled to a special enrollment period of eight months to sign up for Part B without incurring a late penalty.

This also applies to most people who are covered beyond age 65 by insurance from the employer of their working spouse.

But, there are some exceptions:

  • If the company or organization you work for has fewer than 20 employees, your employer may require you to sign up for Part B when you turn 65.  If so, Medicare would become your primary coverage (meaning it pays bills first) and your employer coverage would be secondary.  In this case, you need to find out exactly how your employer plan will work with Medicare.

  • If you are in a same-sex marriage or relationship and receive health insurance from your partner’s employer as his or her dependent, you will not be entitled to a special enrollment period if you delay signing up for Part B—even if you are legally married under the laws of your state or country.  So to avoid late penalties in the future when your partner stops work, you should sign up for Part B at age 65. 

Will I get the same health benefits at work as I get now?

By law, people who continue to work beyond age 65 still must be offered the same health insurance benefits (for themselves and their dependents) as younger people working for the same employer. So your employer cannot require you to take Medicare when you turn 65 or offer you a different kind of insurance — for example, by paying the premiums for Medicare supplemental insurance or a Medicare Advantage plan — as an inducement to enroll in Medicare and drop your employer plan. However, this law (known as ERISA) applies only to employers with 20 or more workers.  So if you work for a smaller business or organization, you may be required to enroll in Part B at age 65.

Do I need to do anything about Part B at age 65 if I continue to be insured at work?

It depends on whether you’re already receiving Social Security retirement benefits.  If you are, Social Security will automatically enroll you in Part A and Part B just before your 65th birthday.  The letter sent to you with your Medicare card explains your right to opt out of Part B if you have employer insurance.  To opt out, follow the instructions included in that letter within the specified deadline.

Should I still sign up for Medicare Part A?

With one exception (see next item), there's no reason not to enroll in Part A, which covers hospital stays, around the time you turn 65 because if you contributed enough Medicare payroll taxes while working there are no premiums for Part A.

You can sign up for Part A during your initial Medicare enrollment period, which runs for seven months, starting three months before the month of your 65th birthday and ending three months after that month. Just call Social Security, which handles Medicare enrollment, at 1-800-772-1213 and schedule an appointment for an interview, which can be done on the phone or at your local Social Security office. This interview gives you the opportunity to make sure that an official enters into your record the fact that you have declined Part B because you have health insurance through the current employment of you or your spouse. You may be required to provide documents showing you have this coverage.

Next: What if I have a health savings account at work? >>

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