Boston.com reports, “A federal grand jury is scheduled to hear testimony this week about the alleged exploitation of immigrant workers at Upper Crust Pizzeria, according to several sources with direct knowledge of the inquiry.”

“Earlier this year, the Globe reported that at least two federal agencies, the Department of Labor and Immigration and Customs Enforcement, were investigating the Boston-based pizza chain. The labor department is looking into accusations that Upper Crust rescinded thousands of dollars in back overtime payments the agency required the company to make to employees in 2009. Immigration officials have been examining whether Upper Crust harbored and exploited illegal immigrant workers.”