There is exactly one window in your life when an insurance company cannot say no to you on a Medicare supplement. It is six months long, it happens once, and Medicare says plainly that it does not repeat. Almost nobody understands what they are giving up when it closes.
Medicare is an individual program. There is no family plan and no spouse rider. So when the older half of a couple ages into it, the younger half can quietly lose coverage, and the moment that happens determines whether she has good options or almost none.
He retired from a city job with the retiree health plan everyone in the building envied. What nobody explained is that retiree coverage and employer coverage are two different things under Medicare's rules, and there is a line in Medicare's own guidance that decides what his plan is actually worth.
It is some of the most common advice a veteran hears, it is offered kindly, and it quietly assumes something that is not true. The VA covers care at the VA. Part B is what covers everything else, and the two were never designed as an either-or choice.
She was let go at 68 after decades with the same company. They handed her two years of COBRA, which felt generous, and it was. What nobody mentioned is that a completely separate clock had started the day her employment ended, and it does not care how much COBRA you have.
There is a line in the Medicare rules drawn at twenty employees. On one side, your group plan pays your bills first. On the other side, Medicare does, whether or not you ever signed up for it. Most business owners find out which side they are on the hard way.