Still Working at 65? 7 Questions Before Delaying Medicare Part B

Still working at 65? Learn whether you can delay Medicare Part B without a penalty and what to verify about employer coverage, HSAs, and enrollment.

Shawn Ray

7/23/20262 min read

Turning 65 doesn't mean you have to drop your employer coverage and sign up for every part of Medicare right away. Whether you can safely delay Part B depends on a few key details. Here's what to check first.

1. Is your coverage based on current employment?

  • Coverage through your own or your spouse's current job can qualify you to delay Part B and use a Special Enrollment Period later

  • COBRA, retiree plans, Marketplace plans, and VA coverage do NOT protect your enrollment timing

  • Get written confirmation from your employer's benefits department

2. How big is the employer?

  • 20+ employees: employer plan usually pays first, Medicare pays second

  • Fewer than 20 employees: Medicare usually pays first, employer plan pays second

  • Ask HR directly: "Does our plan pay first after I turn 65, or does Medicare?"

3. Do you have an HSA?

  • You can't contribute to an HSA once Medicare coverage starts

  • Medicare Part A can be retroactive up to 6 months — this can trigger HSA contribution problems

  • Coordinate timing with your employer, HSA administrator, and a tax professional before applying

4. Is your drug coverage creditable?

  • Ask if your employer/union drug plan is "creditable" (pays as well as Medicare Part D on average)

  • Save every Notice of Creditable Coverage you receive

  • Going 63+ days without creditable drug coverage can trigger a Part D late penalty

5. When does your coverage actually end?

  • You generally get 8 months to enroll in Part B after employment or coverage ends (whichever comes first)

  • Don't wait until the deadline — apply early to avoid a coverage gap

  • Track: last day worked, last day of coverage, desired Medicare start date, enrollment deadline

6. Are you considering COBRA or retiree coverage?

  • COBRA does not extend your 8-month Part B Special Enrollment Period

  • The clock starts when active employment/coverage ends — even if you elect COBRA

  • Retiree coverage also doesn't count as "current employment" coverage

7. Is everything in writing?

Keep a folder with:

  • Written proof coverage is based on current employment

  • Employer size + who pays first

  • Notice of Creditable Coverage

  • Planned employment/coverage end dates

  • HSA contribution and Medicare start dates

  • Enrollment confirmations

  • Benefits contact info

Bottom line

Don't auto-enroll in Part B just because you turned 65 — and don't auto-delay it just because you're still working. Confirm your coverage type, who pays first, drug coverage status, HSA impact, and your employer coverage end date first.

Questions are always welcome — I'm just a call or text away: 435-244-2001.

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