"There have been significant changes for all seniors, but the increase is most striking among people 65 and older. For 75-year-olds, labor-force participation has risen to 14 percent from 9 percent since 2000. The number of people age 65 to 79 in the workforce has grown by 3.5 million. Of that, 1.6 million is due to the growing population in that age group, and 1.9 million is due to the increased propensity to work."  MORE >>