If you are still active you stay on your Company's Health and Welfare coverages (Medicare becomes your secondary) when you retire after age 65 you are dropped and then start Medicare as a primary. Under Team Care you have no supplemental coverage once you turn 65 as a retiree. A ton of people are going to stay way past retirement age just because of their Health and Welfare packages being superior to the Medicare program, especially if you, your wife or children have medical issues.
I just saw one part timer stay past 70 1/2 and be able to collect their wages, SS and pension benefits. I am currently collecting SS and active and 3 years away before I (have) to collect my pension benefits if I work past 70 1/2.
triple dipping...