A quote from Greg Gianforte, Republican candidate for governor of Montana:
There's nothing in the Bible that talks about retirement. And yet it's been an accepted concept in our culture today. Nowhere does it say, "Well, he was a good and faithful servant, so he went to the beach." It doesn't say that anywhere.
The example I think of is Noah. How old was Noah when he built the ark? 600. He wasn't like, cashing Social Security checks, he wasn't hanging out, he was working. So, I think we have an obligation to work. The role we have in work may change over time, but the concept of retirement is not biblical.