Wonder when these folks retired.

Kind of blows my mind that there are people out there that have lived longer in retirement, than they have worked.

I believe Japan has a different concept of retirement than America; I can't speak for other Western cultures. More elderly people work low-paying part-time jobs to remain members of society, in addition to their financial needs. Americans tend to work in retirement out of financial needs, while idealizing not working during retirement.

It's very common in Japan to work even during nominal retirement.