The unemployment rate skyrocketed in May, the government said today, as employers cut more jobs.

The jobless rate for the month was 5.5 percent, up from 5 percent in April, the Labor Department said. That was the largest swing in a single month since 1986. The result stunned economists, who had expected the rate to rise only to 5.1 percent. The report also said the number of jobs on employers' payrolls fell by 49,000.