The MegaCorp I retired from has a "retiree medical benefits" plan. I finally got the details, and the price. It does include prescription coverage.
I plugged it into the spreadsheet I'm making of all the Medicare plans I'm interested in. It's very hard to find a combination of plans which is more expensive than what the company is offering. About the only way would be to select the most expensive Plan D, which my company plan is nowhere near comparable to. I even called the company health care support number and flat-out asked if the plan they offer is subsidized or fully paid by the retiree. He claimed it's subsidized, but when I wondered out loud whether any retirees found it less expensive than other options, he said he wasn't allowed to answer that question.
They also rolled out a new retiree Advantage plan this year. I sat in on an on-line seminar which was billed as addressing retiree health insurance issues. Pretty early on, they turned it over to a Humana rep who gave a hard-sell sales pitch for that Advantage plan. I was already leaning toward avoiding Advantage plans, but this attempt to shove it down my throat only strengthened that idea.
It's pretty clear to me the company wants no part of retiree health care expenses. They made the "regular" plan unaffordable and are trying to pawn everyone off onto Humana's Advantage plan. I suspect they're getting a cut of the profits from Humana.