Here’s some interesting research. Scientists expect that about half of babies today will live to reach 100, and they’ll enjoy less disability in their senior years than the currently elderly population. According to the HealthDay News story:
The researchers suggested that shortening work weeks and extending people’s working lives might further extend increases in life expectancy and health, and help nations cope with the economic implications of many more people living longer lives.
“If people in their 60s and early 70s worked much more than they do nowadays, then most people could work fewer hours per week than is currently common — if they worked correspondingly more years of their longer lives,” the authors stated.