Retiree Coverage and Medicare: What It Means for Your Enrollment

Retiree health coverage from a former employer does not count as active employer coverage for Medicare purposes. Unlike active employer insurance, retiree coverage does not give you a Special Enrollment Period for Part B — so delays can result in permanent penalties and gaps in coverage.

Key Rules

Retiree coverage does NOT give you SEP rights when it ends — you will not receive an 8-month window like active employer coverage provides
Medicare generally becomes the primary payer once you enroll in Medicare while on retiree coverage
Delaying Part B while relying on retiree coverage can result in a permanent late-enrollment penalty of 10% per year
Always confirm with your former employer whether your retiree plan is designed to supplement Medicare or replace it