Interesting chart. I can see the logic in it. Smart people generally retire before not-so-smart people. Smart people live the longest in any study you will read. Phi Beta Kappa live the longest of all Americans on average (from a study many years ago).
It is, however, the very opposite of the studies I have been reading in the last two years. Those studies showed people in countries that have no traditional form of retirement actually lived longer than the average American. People in underdeveloped countries had to work their whole lives and ate a diet with less rich (think fattening) foods.
The island of Corsica is my favorite study. The mountain folk who live in the center of the island are rather genetically isolated. They work agricultural jobs, walk everywhere, drink one of the finest wines in the world, are supported by very close family ties, and have little stress. They live far into their 90's. Some are 100+.
Okinawa is next with their fishing based diet. Lots of steamed veggies, kelp, and seafood. Lots of physical work, low stress, very high family ties and close connections in the local community.
All the studies I have read lately call for a low calorie plant based diet, avoid risky behavior (think illicit drugs, sex, and too much alcohol), ingest lots, and lots of phyto-nutrients, resveratrol, and anti-oxidants. Get plenty of sleep. Avoid stress, keep you mind engaged with challenging tasks (keep learning things), keep the blood pumping, and have lots of family/community/ friendship support.
All the rest is genetics. Some live a long time, some don't. Make the most of what you have.
You have to play life with the cards (DNA) you have been dealt. It is more important to focus on morbidity, than mortality. Mortality is when you die. Morbidity is the lack of a quality life in your older years. In other words, you are sickly. Avoid being sickly by all the health tips you can find at places like RealAge.
http://www.realage.com/Edit: Oh, yeah, I most likely will work until I fall over dead.

2nd Edit: The RealAge link sometimes has a weird ad. superimposed on it. This one should get you there:
http://www.realage.com/the-you-docs/my-realage
When I die, I want to go like Grandpa did. He died in his sleep..... Not screaming and hollering like all the passengers in his car.