At age 81, Thomas Cooper has had a bout with cancer, and endured a back operation, but neither has convinced him to retire.
Instead, five days a week you'll find him selling men's shoes at a Nordstrom store in Bethesda, Md., just outside Washington D.C.
"I would go crazy sitting around the house," Cooper told ABCNews, "So I work."
A new study indicates he is hardly alone, according to government data analyzed by the AARP Public Policy Institute.
"The number and the proportion of people,...Full Story