A group representing restaurant workers…filed a federal class action lawsuit against Darden Restaurants...claiming race discrimination and wage improprieties...Darden Restaurants...said it will investigate the charges.“After repeated requests for specifics from ROC [Restaurant Opportunities Centers], the first response we received is this lawsuit,” said Rich Jeffers, Darden’s director of media relations...“We continue to believe these allegations are baseless. However, as with any claims of impropriety, we will investigate them thoroughly.”...[ROC] United…in the lawsuit...said it “alleges violations of the Civil Rights Act that are reflective of a corporate-wide policy of racial discrimination and the federal Fair Labor Standards Act and state wage and hour laws for wage theft against all workers”...ROC said the…complaint alleges, “Many of the ‘back-of-the-house’ positions…are given to workers of color, while the more lucrative ‘front-of-the-house’ positions…are given to white workers”…ROC-United said it has more than 9,000 members in nine states.