Construction workers stand on the top of a building being constructed in New York City in this file image from May 6, 2010. The number of workers filing new applications for unemployment insurance unexpectedly rose last week, according to a U.S. Labor Department report issued May 20, 2010, for the first time since April, suggesting the labor market recovery has hit a stumbling block. REUTERS/Lucas Jackson/Files (UNITED STATES - Tags: BUSINESS CONSTRUCTION EMPLOYMENT)