The nation's economy added 115,00 jobs in April while the unemployment rate dropped one-tenth of a point to 8.1 percent.

The figures are lower than a month ago and were also below what many analysts had expected.

They will add to the sense that the labor market is cooling down after months of stronger growth, and come as unwelcome news for President Obama, who is formally launching his reelection campaign on Friday with rallies in Virginia and Ohio.