If you wait to sign up for Part B because you or your spouse is currently working, and you are covered by a group health plan based on that work, or if you are disabled and you or a family member is working,  and you are covered by a group health plan based on that work.

You can sign up for Part B anytime while you have group health plan coverage based on current employment or during the 8-month period that begins the month after the employment ends, or the group health plan coverage ends, whichever happens first. If you have COBRA coverage, you must enroll during the 8-month period that begins the month after the employment ends. This Special Enrollment Period doesn’t apply to people with End-Stage Renal Disease (ESRD).

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