Richard Piña, 69, with customer Augustin Bustos at Rich's Den barbershop in Calumet City, Ill. Piña, who retired from the Chicago police force 12 years ago, works at his shop four or five hours a day. Beth Rooney for NPR hide caption

itoggle caption Beth Rooney for NPR

Wisconsin state Sen. Fred Risser at the state Capitol. Narayan Mahon for NPR hide caption

itoggle caption Narayan Mahon for NPR

The recession put a dent in Sims-Wood's savings, and she expects she'll have to stay in the workforce "forever." Gabriella Demczuk/NPR hide caption

itoggle caption Gabriella Demczuk/NPR

John David, 73, teaches an exercise class called PACE to seniors at the 92nd Street Y in New York City. The former TV producer says he has finally found his true calling. Shiho Fukada for NPR hide caption

itoggle caption Shiho Fukada for NPR