Fed Chairman Ben S. Bernanke spotlighted chronic high unemployment in a speech in Jackson Hole, Wyo., late last month. Mr. Bernanke argued that unorthodox Fed actions have helped ease borrowing costs and boosted stock prices. (Associated Press)

Fed Chairman Ben S. Bernanke spotlighted chronic high unemployment in a speech in Jackson Hole, Wyo., late last month. Mr. Bernanke argued that unorthodox Fed actions have helped ease borrowing costs and boosted stock prices. (Associated Press)