In recent months, Americans have heard reports out of Washington and in the media that the economy is looking up—that recovery from the Great Recession is gathering steam. If only it were true. The longest and worst recession since the end of World War II has been marked by the weakest recovery from any U.S. recession in that same period.

The jobless nature of the recovery is particularly unsettling. In June, the government's Household Survey reported that since the start of the year, the number of people with jobs increased...