Working Past 65 in Temecula? How Medicare and Employer Coverage Fit

A lot of people in Temecula and Murrieta are still working at 65. Some love their jobs, some are building savings, and some are carrying a spouse on their health plan. The big question I hear is: Do I have to sign up for Medicare if I still have insurance through work? The honest answer is “it depends,” but it depends on a few specific things you can check. Here’s how I walk my clients through it.

Question 1: Is your coverage from current employment?

The protections for delaying Medicare apply when you (or your spouse) are currently working and covered by an employer or union group health plan based on that job (Medicare.gov: Working past 65). Retiree coverage, COBRA and individual marketplace plans don’t count as coverage from current employment for this purpose. Medicare.gov is clear that COBRA doesn’t extend your time to sign up for Medicare.

Question 2: How many employees does the employer have?

Employer size decides who pays first. For people with Medicare because of age, coverage from current work generally pays first if the employer has 20 or more employees. With a smaller employer, Medicare generally pays first (CMS: Employer partners). If Medicare is supposed to pay first and you don’t have Part B, your job-based plan may pay little or nothing for services Part B would have covered.

That’s why Medicare.gov says to ask the employer providing your insurance whether you need to sign up for Part A and Part B when you turn 65 (Medicare.gov). Many small businesses in our area, from Old Town shops to Murrieta contractors, fall under the 20-employee line, so this question matters here.

Part A: often worth taking at 65

If you qualify for premium-free Part A, many people sign up at 65 even while working, because there’s usually no monthly cost. There’s one big exception: Health Savings Accounts. Medicare.gov notes that Part A coverage can start up to 6 months back from when you sign up, and advises that you and your employer stop HSA contributions 6 months before you apply for Medicare or Social Security benefits, to avoid a tax penalty (Medicare.gov). If you’re contributing to an HSA, talk to your benefits administrator and tax professional before you enroll.

Part B: the 8-month Special Enrollment Period

If you delay Part B because you have job-based coverage from current employment, you get a Special Enrollment Period. You can sign up anytime while you still have that coverage, or within 8 months after the job or the coverage ends, whichever comes first, without a Part B late enrollment penalty (Medicare.gov: When does coverage start?).

Miss that window and you may have to wait for the General Enrollment Period (January 1 – March 31) and pay a late penalty, generally 10% for each full 12-month period you could have had Part B but didn’t, for as long as you have Part B (Medicare.gov: Avoid penalties).

Drug coverage: confirm it’s creditable

If you skip Part D while working, your employer drug coverage needs to be creditable, meaning expected to pay at least as much as standard Medicare drug coverage. Employers send a yearly notice saying whether it is. Keep that notice. Going 63 days or more without creditable drug coverage after your Initial Enrollment Period can trigger a lasting Part D penalty (Medicare.gov).

When you retire: a smooth handoff

When retirement gets close, this is the sequence I use with clients:

• About 2–3 months before your last day, confirm the exact date your employer coverage ends.
• Get the employer forms Social Security uses to verify your group coverage (your benefits office can help).
• Apply for Part B (and Part A if you haven’t already) so it starts when your employer coverage ends.
• Choose a Medigap plus Part D combination or a Medicare Advantage plan that starts the same day.
• If you choose Medigap, remember that your six-month Medigap Open Enrollment Period begins when your Part B starts at 65 or older.

That last point surprises people. If you delayed Part B while working, your Medigap Open Enrollment window doesn’t start until Part B does. That can be an advantage, but only if you use it. California’s Medigap birthday rule also gives you a yearly chance to switch Medigap policies later.

Spouses, younger dependents and other wrinkles

If your spouse is younger than 65 and on your work plan, retiring affects their coverage too. Plan for that before you give notice. People with higher incomes should also know that Part B and Part D premiums can include an income-related adjustment. Retirement is one of the life-changing events that can qualify you to ask Social Security to recalculate it. See IRMAA in 2026: Higher Medicare Premiums Explained.

If you’re approaching 65 and haven’t decided yet, Turning 65 in Temecula or Murrieta: Your Medicare Checklist lays out the basics. For current premiums and the Part D cap, see Medicare 2026 in Temecula & Murrieta.

Every employer plan is different, so let’s look at yours together. Call 760-297-0366 or request a free Medicare review.

Frequently Asked Questions

Questions about your own situation? Call me at 760-297-0366 or request a free Medicare review. I’m Cesar Ramirez with Temeku Insurance, CA License #0M47591, serving Temecula, Murrieta, Menifee, Sun City, Wildomar, Lake Elsinore, Hemet and Fallbrook.