A New York City law firm known for filing class action lawsuits on behalf of chain restaurant workers is going after Dinosaur Bar-B-Que for what it says is the systemic underpayment of tipped workers like servers and bartenders. The law firm of Fitapelli & Schaffer said it has filed a class action lawsuit in U.S. District Court for the Southern District of New York involving all six New York state Dinosaur Bar-B-Que locations, including the one opened in Troy in 2010. Dinosaur has made tipped workers spend at least 20 percent of their time doing non-tippable work — like rolling...