10. They want to make a difference
Aside from financial reasons, many people keep working because they want to stay active or "contribute and be productive," researchers at Boston College and Families and Work Institute found. More people are using the second half of life to take on second careers, start businesses or follow long-delayed dreams to serve their communities, social entrepreneurship pioneer and Civic Ventures chief executive Marc Freedman
writes his book, "The Big Shift"
. "It's a time," he writes, "when many have insight about what matters, a special impetus to act on this wisdom, and the ability to do so. In this respect, it's a potential sweet spot, a confluence rather than a reinvention."