Applications for unemployment benefits in the United States reached a three-month high last week, which is a sign that the labor market is beginning to loosen its grip after a wave of layoffs at technology businesses. According to figures released by the Labor Department on Wednesday, the U.S. jobless claims rose by 17,000 to a total of 240,000. According to the results of a study conducted by Bloomberg with economists, the median estimate was 225,000.