Initial claims for state unemployment benefits declined 26,000 to a seasonally adjusted 319,000 for the week ended May 3, the Labor Department said on Thursday. The decline snapped three straight weeks of increases.
Claims for the week ended April 26 were revised to show 1,000 more applications received than previously reported.
Claims are volatile around this time of the year as the timing of Easter and school spring breaks can throw off the model that the government uses to smooth the data for seasonal fluctuations.
The four-week moving average for new claims, considered a better measure of underlying labor market conditions as it irons out week-to-week volatility, rose 4,500 to 324,750.
Despite the increase, the four-week average remains at levels consistent with an improving labor market.
A Labor Department analyst said there were no special factors influencing the state level data.
The labor market is firming with employment growth averaging more than 200,000 jobs per month in the first four months of the year. Employers in April added 288,000 jobs to their payrolls, the most since January 2012.
The unemployment rate dropped to 6.3 percent last month, compared to 6.7 percent at the end of 2013. The decline has also been aided by people dropping out of the labor force.
Federal Reserve Chair Janet Yellen said on Wednesday conditions in the labor market had improved "appreciably," but she added they remained still far from satisfactory.
The U.S. central bank has been scaling back its monetary stimulus and is expected to conclude its monthly bond-buying program by the end of 2014.
The Fed, however, is not expected to start raising overnight interest rates, currently near zero, before the second half of 2015.
The claims report showed the number of people still receiving benefits after an initial week of aid fell 76,000 to 2.69 million in the week ended April 26.