Can You Still Get Medicare While Working? Key Rules

Many people assume that Medicare enrollment is only for retirees, but the reality is more flexible. If you are still employed and covered by an employer health plan, you might wonder whether you can sign up for Medicare without losing your current coverage or facing penalties. The short answer is yes, you can still get Medicare while working, but the timing, costs, and coordination with your employer insurance require careful planning. Understanding the rules helps you avoid late enrollment penalties and ensures you have the right coverage for your health needs.

Working past age 65 is increasingly common, and Medicare rules account for this situation. You have options to delay Part B and Part D enrollment without penalty if you have credible employer coverage. However, Part A may be free and worth enrolling in immediately. The key is knowing how your employer plan interacts with Medicare and what steps to take before your job ends or your coverage changes. This article explains the eligibility rules, enrollment strategies, and potential pitfalls so you can make an informed decision.

Medicare Eligibility While Working

Medicare eligibility begins at age 65 for most people, regardless of employment status. If you are still working at 65, you can enroll in Medicare without quitting your job. You may also qualify earlier if you receive Social Security Disability Insurance for 24 months or have certain medical conditions like end-stage renal disease or amyotrophic lateral sclerosis. The key point is that employment does not disqualify you from Medicare.

However, the decision to enroll depends on the size of your employer and the type of coverage you have. Employers with 20 or more employees must offer the same health coverage to employees aged 65 and older as they do to younger workers. If your employer has fewer than 20 employees, Medicare generally becomes your primary insurance, and you should enroll in Parts A and B to avoid gaps. In our guide on At 62 Can I Get Medicare? Learn the Exceptions and Benefits, we explain how age and disability affect eligibility.

How Employer Coverage Affects Medicare Enrollment

When you have employer health insurance, Medicare coordinates with that plan based on the size of your employer. For companies with 20 or more employees, your employer plan pays first (primary), and Medicare pays second (secondary). This means you can delay enrolling in Part B and Part D without penalty, as long as you have credible prescription drug coverage through your employer. You will also avoid the late enrollment penalty for Part B if you sign up within eight months after your employment or employer coverage ends.

For employers with fewer than 20 employees, Medicare pays first. In this case, enrolling in Part A and Part B is usually necessary even while working because your employer plan may not cover services that Medicare would otherwise pay for. If you skip Part B, you could face significant out-of-pocket costs for doctor visits and outpatient care. Consult your benefits administrator to confirm the size of your employer and how coverage coordinates.

Part A While Working

Medicare Part A (hospital insurance) is premium-free for most people who have paid Medicare taxes for at least 10 years. If you qualify, enrolling in Part A while working makes sense even if you have employer coverage. Part A covers inpatient hospital stays, skilled nursing facility care, hospice, and some home health services. Since it costs nothing for most people, there is no reason to delay. If you do not qualify for premium-free Part A, you can purchase it, but you should weigh the cost against your employer coverage.

Part B While Working

Medicare Part B (medical insurance) covers doctor visits, outpatient care, preventive services, and medical equipment. Part B has a monthly premium, which in 2026 is $174.70 for most beneficiaries (higher for high-income earners). If you have employer coverage from a company with 20 or more employees, you can delay Part B without penalty. However, if you enroll in Part B while still working, Medicare becomes secondary, meaning it may cover some costs your employer plan does not, such as deductibles or coinsurance.

Deciding whether to take Part B while working depends on your employer plan’s costs and coverage. If your employer plan has high deductibles or limited out-of-network coverage, adding Part B may reduce your expenses. Conversely, if your employer plan is comprehensive and affordable, delaying Part B saves you premium dollars. Just remember to sign up during your Special Enrollment Period when your employment or coverage ends to avoid late penalties.

Special Enrollment Period for Working Seniors

The Special Enrollment Period (SEP) allows you to enroll in Medicare Part B and Part D without penalty after your employer coverage ends. This SEP begins when your employment ends or your employer coverage ceases, whichever happens first. You have eight months to sign up for Part B and two months to sign up for Part D or a Medicare Advantage plan with drug coverage. During this period, you cannot be denied coverage or charged a late enrollment penalty.

To qualify for the SEP, you must have had group health plan coverage based on current employment (your own or your spouse’s). The coverage must be considered credible, meaning it meets Medicare’s minimum standards for prescription drug coverage. If you delay enrolling without credible coverage, you may face a lifetime late enrollment penalty for Part B (10% of the premium for each 12-month period you were eligible but did not enroll) and for Part D (1% of the base premium per month).

For example, if you work until age 68 and then retire, you have eight months from your retirement date to enroll in Part B. If you miss this window, you must wait for the General Enrollment Period (January 1 to March 31) and may pay a penalty. Planning ahead with your employer’s HR department ensures you understand your SEP dates and avoid costly mistakes.

Medicare Part D and Prescription Drug Coverage

Prescription drug coverage is another consideration for working seniors. If your employer offers prescription drug coverage that is at least as good as Medicare’s standard Part D coverage (creditable coverage), you can delay Part D enrollment without penalty. Your employer must provide a notice each year stating whether your plan’s drug coverage is creditable. Keep this notice in your records to prove you had creditable coverage when you later enroll in Part D.

If your employer’s drug coverage is not creditable, you should enroll in a Part D plan as soon as you become eligible to avoid the late enrollment penalty. Even if you are still working, you can join a standalone Part D plan or a Medicare Advantage plan that includes drug coverage. Compare your employer’s formulary and costs with Medicare Part D options to see which offers better value. For some people, the employer plan may have lower copays, while others may find Part D more affordable.

Medigap and Medicare Advantage Considerations

If you decide to enroll in Medicare while working, you have two main paths: Original Medicare with a Medigap supplement and a Part D plan, or a Medicare Advantage plan (Part C). Medigap policies help cover Original Medicare’s out-of-pocket costs like deductibles and coinsurance. However, Medigap is not compatible with employer coverage, so you would only use it after your employment ends. Medicare Advantage plans replace Original Medicare and often include drug coverage, but they have network restrictions.

While working, Medicare Advantage may be unnecessary if you already have comprehensive employer coverage. However, if your employer plan is expensive or limited, a Medicare Advantage plan could serve as your primary coverage and replace your employer plan. Note that if you choose Medicare Advantage, you must disenroll from your employer plan, as you cannot have both. We discuss these trade-offs in depth in our article on Can I Get Medicare at 55? Understanding Eligibility and Options, which applies to early retirees but offers principles relevant to working seniors.

Costs and Penalties to Watch

Enrolling in Medicare while working involves several cost considerations. Part A is usually free, but Part B has a premium that increases with income. If you are still working and earning a high salary, you may pay an Income-Related Monthly Adjustment Amount (IRMAA) surcharge on Part B and Part D premiums. The Social Security Administration determines IRMAA based on your tax return from two years prior. If your income drops after retirement, you can appeal the surcharge.

The late enrollment penalty is the biggest financial risk. If you delay Part B without qualifying for an SEP, you pay a 10% penalty for each 12-month period you were eligible but unenrolled. This penalty lasts for life. For Part D, the penalty is 1% of the national base premium multiplied by the number of months you went without creditable coverage. Both penalties can add hundreds of dollars to your annual costs. To avoid them, document your employer coverage and enroll during your SEP.

Here are the key costs and penalties to track:

• Part B premium: $174.70 per month in 2026 for most enrollees, with IRMAA surcharges for higher incomes.
• Part D late penalty: 1% of the base premium ($36.78 in 2026) for each uncovered month, added to your premium permanently.
• Part B late penalty: 10% of the Part B premium for each full 12-month period you delayed enrollment without SEP protection.
• Medigap costs: Premiums vary by plan type and location, but you may face medical underwriting if you delay enrollment beyond your Medigap Open Enrollment Period.

These costs underscore why it is critical to coordinate your enrollment with your employment timeline. A few months of planning can save you thousands of dollars over your retirement years.

Steps to Enroll While Working

If you decide to enroll in Medicare while working, follow a systematic process to ensure you meet deadlines and avoid penalties. First, confirm your employer’s size and whether your coverage is creditable for drug benefits. Ask your benefits administrator for a written statement. Second, decide whether to take Part A immediately (recommended if free) and whether to delay Part B and Part D. Third, if you enroll in Part B while working, notify your employer so they can coordinate benefits.

To enroll in Part A and Part B, you can apply online at the Social Security Administration website, visit a local Social Security office, or call 1-800-772-1213. If you are already receiving Social Security benefits, you will be automatically enrolled in Part A and Part B at age 65. However, you can opt out of Part B if you have employer coverage by following the instructions on your Medicare card. For Part D or Medicare Advantage, use the Medicare Plan Finder tool or work with a licensed agent to compare plans in your area.

Finally, set a reminder to enroll in Part B and Part D during your SEP when you retire or lose employer coverage. The eight-month window for Part B starts the month after your employment or coverage ends. Do not wait until the last month, as processing delays could leave you without coverage temporarily. Our platform at NewMedicare.com offers tools to compare plans and connect with agents who can guide you through each step.

Frequently Asked Questions

Can I keep my employer health insurance and get Medicare at the same time?

Yes, you can keep both. Your employer plan pays first if your company has 20 or more employees, and Medicare pays second. If your employer has fewer than 20 employees, Medicare pays first. You must decide which coverage to use as primary based on your employer’s size.

Do I have to enroll in Part B if I am still working?

No, you can delay Part B without penalty if you have employer coverage from a company with 20 or more employees. You should enroll in Part B during your Special Enrollment Period when your employment or coverage ends. If your employer has fewer than 20 employees, enrolling in Part B is usually recommended because Medicare becomes primary.

What happens if I delay Medicare enrollment while working?

If you delay Part B or Part D without credible employer coverage, you may face late enrollment penalties that last for life. If you have credible coverage, you can delay without penalty as long as you enroll during your SEP. Always keep proof of your employer coverage to avoid disputes.

Can I contribute to a Health Savings Account (HSA) while on Medicare?

No, once you enroll in any part of Medicare, you cannot contribute to an HSA. If you have an HSA, stop contributing at least six months before you apply for Medicare to avoid tax penalties. You can still use existing HSA funds for qualified medical expenses tax-free.

Does working affect my Medicare premium?

Working does not directly affect your Medicare premium, but your income does. If your modified adjusted gross income exceeds certain thresholds, you may pay an IRMAA surcharge on Part B and Part D premiums. These surcharges apply regardless of employment status.

Making the Right Choice for Your Situation

Deciding whether to enroll in Medicare while working depends on your employer plan quality, your health needs, and your long-term financial goals. For most people with employer coverage from a large company, delaying Part B and Part D is safe and saves premium dollars. For those with small employer plans or high out-of-pocket costs, enrolling in Medicare early may provide better coverage and lower expenses. The most important step is to gather information about your employer plan and understand your SEP rights. By doing so, you can avoid penalties and ensure seamless coverage when you retire. If you need personalized help comparing plans or understanding your options, call us at 833-203-6742 or visit NewMedicare.com for free guidance.