I'm one of those folks who tends to believe....whether in government office or some commercial work job....by the time you turn age 65....you need to be headed out. I hate to call it 'forced' retirement but that's probably the most accurate term to use.
I'd call for a simple five-part test:
1. Walk a one-mile situation on a track in 24 minutes.
2. Ten-question math test that is normally given to a 5th grade class, with half the problems being word problems.
3. Hand a suit or dress to the individual, and have them dress for themselves in three minutes.....without help.
4. Give each a 10-line piece of text to be read out loud (with their reading glasses). Must be accomplished in three minutes.
5. Hand them a 20-piece puzzle set and give them five minutes to complete.
This should be done yearly with all five components passed. If you fail any part....you get 90 days to prepare for your retirement, and three months of full-pay as you exit.