BOSTON — The U.S. Department of Labor has recovered more than $1.5 million in back wages for 272 employees of SI International SEIT Inc., a contractor for the U.S. Department of Homeland Security's U.S. Citizenship and Immigration Services (USCIS) Vermont Service Center, at various locations in St. Albans and Essex Junction, Vt. SI International SEIT Inc., a wholly-owned subsidiary of SI International Inc., employed workers at the Vermont Service Center under federal service contracts subject to the McNamara-O'Hara Service Contract Act's prevailing wage provisions. Following an investigation, the Labor Department's Wage and Hour Division cited the company for misclassifying employees and failing to pay them the proper prevailing wage rates for the type of work they were actually performing.