What You Need to Know About the Medicare Open Enrollment Period and Delaying Medicare While Working

Michel July 24, 2025

As you approach the age of 65, you’ll encounter important decisions regarding your healthcare coverage. One of the key decisions revolves around the Medicare open enrollment period. Understanding this period is essential for making informed choices about your healthcare coverage. If you’re still working and wondering about the rules, you may also be considering whether to delay Medicare while working. This post will help clarify these two concepts and provide you with the necessary steps to make the right decisions about Medicare enrollment.

What is the Medicare Open Enrollment Period?

The Medicare open enrollment period refers to a specific time frame each year when individuals can make changes to their Medicare plans. It usually takes place from October 15 to December 7. During this period, you can enroll in Medicare for the first time, switch Medicare plans, or make other changes to your coverage.

For those turning 65, it’s essential to be aware of this window because if you miss it, you may face penalties or delays in your coverage. The open enrollment period is also a chance for current Medicare beneficiaries to review and adjust their plans based on their healthcare needs.

When is the Medicare Open Enrollment Period?

The Medicare open enrollment period occurs every year from October 15 to December 7. During these months, you can make changes to your current Medicare plan or switch to another plan. If you miss this period, you may have to wait until the next enrollment cycle, which could result in coverage delays or financial penalties.

It’s important to note that there are also specific times when people new to Medicare can enroll, such as the Initial Enrollment Period when you first become eligible at age 65. However, the open enrollment period is for making adjustments or first-time enrollment if you missed the Initial Enrollment Period.

Can I Delay Medicare While Working?

If you’re still working when you turn 65 and have health insurance through your employer, you might wonder if you can delay Medicare while working. The answer is yes, you can delay enrolling in Medicare Part B (medical insurance) if your employer’s insurance is considered “creditable” coverage. This means your employer’s plan meets or exceeds Medicare’s standards, and you won’t face late enrollment penalties when you eventually sign up for Medicare.

However, even if you’re delaying Medicare Part B, you should still consider signing up for Medicare Part A (hospital insurance), as it is often premium-free for those who have worked and paid Medicare taxes for at least 10 years. You can delay Part B without penalty as long as you sign up for it during the Special Enrollment Period when your employer coverage ends or you retire.

Why Should You Consider Delaying Medicare While Working?

Many individuals choose to delay Medicare while working because they have access to employer-sponsored health insurance that provides adequate coverage. If you are employed with more than 20 employees, your employer’s insurance is typically the primary payer, and Medicare will be secondary. This allows you to delay enrolling in Medicare Part B without penalty.

Delaying Medicare enrollment can also help you save money, as your employer insurance may cover many of the costs that Medicare would otherwise handle. Additionally, if you stay on an employer plan, you may not need to pay premiums for Part B until you retire or lose employer health coverage.

However, if you work for a smaller employer (less than 20 employees), Medicare will become your primary coverage once you turn 65. In this case, you must enroll in Medicare Part A and Part B.

How to Enroll in Medicare When You’re Ready

Once you decide that it’s time to enroll in Medicare, there are several ways to sign up. If you’ve delayed enrollment while working and your employer coverage is ending, you can sign up for Medicare during the Special Enrollment Period (SEP), which lasts for 8 months after you retire or lose your employer coverage.

You can enroll in Medicare by visiting the official Medicare website, calling the Social Security Administration, or visiting your local Social Security office. Keep in mind that enrolling in Medicare during your SEP ensures that you won’t face late enrollment penalties, so it’s crucial to act promptly when the time comes.

What Happens If You Miss the Medicare Open Enrollment Period?

Missing the Medicare open enrollment period can have significant consequences. If you don’t enroll during the open enrollment period or your SEP, you may face penalties when you do eventually sign up for Medicare. The penalty can increase your monthly premiums for Part B by 10% for every 12-month period you delay without credible coverage.

It’s important to understand the importance of this annual window and how missing it can impact your financial and healthcare needs. To avoid penalties, be sure to mark the dates on your calendar and make changes to your Medicare plan during the enrollment period.

When Should You Sign Up for Medicare If You’re Still Working?

When you’re still working, the decision to enroll in Medicare is often influenced by your employer’s health insurance plan. If your employer has 20 or more employees, you can typically delay enrolling in Part B without penalties. However, you should enroll in Part A, as it’s usually premium-free for most people.

If your employer has fewer than 20 employees, you must sign up for Medicare when you turn 65, even if you plan to keep working. In this case, Medicare will be your primary insurance, and your employer coverage will act as secondary insurance.

Understanding the Medicare Open Enrollment Period and Delaying Medicare While Working

The Medicare open enrollment period and the option to delay Medicare while working are key factors to consider when you approach age 65. Understanding these options helps you make informed decisions about your healthcare coverage and avoid unnecessary penalties. Whether you decide to enroll in Medicare immediately or delay it based on your employer’s health plan, it’s crucial to plan ahead to ensure continuous and comprehensive coverage.

Review Your Medicare Enrollment Options Now

Don’t wait until the last minute to review your Medicare options. Whether you’re turning 65 or still working, understanding the open enrollment period and the rules for delaying Medicare can help you avoid penalties and ensure you’re fully covered. Take action today by contacting a Medicare expert or visiting the official website to learn more about your enrollment options.

FAQs:

  1. What is the Medicare open enrollment period?

The Medicare open enrollment period runs from October 15 to December 7 each year, allowing you to make changes to your Medicare plans.

  1. Can I delay Medicare while working?

Yes, if you have creditable employer coverage, you can delay enrolling in Medicare Part B without penalties. However, enrolling in Part A is usually a good idea.

  1. What happens if I miss the Medicare open enrollment period?

Missing the enrollment period may result in late enrollment penalties, which can increase your premiums for as long as you have Medicare.

  1. How do I enroll in Medicare if I’m still working?

If you’re still working and have employer insurance, you can delay enrolling in Part B until your employer coverage ends. Be sure to sign up during your Special Enrollment Period.

  1. When should I sign up for Medicare if I’m turning 65?

You should sign up during your Initial Enrollment Period or Medicare open enrollment period to avoid penalties, especially if you’re not delaying Part B.

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