Employee lawsuits against their 401(k) retirement plans are grinding through the legal system, with mixed success. Many employers are beating them back, but there have also been some big-money settlements. This year, health insurer Anthem settled a complaint filed by its employees for $24 million, Franklin Templeton Investments settled for $14 million, and Brown University for $3.5 million. More 401(k) lawsuits were filed in 2016 and 2017 than during the 2008 financial crisis, and the steady drumbeat of litigation could be affecting how workers save and invest. For one thing, the suits have coincided with a dramatic increase in equity index funds, according to a report by the Center for Retirement Research. Last year, nearly one out of three U.S…