Caesars Entertainment dealt lawsuit alleging ERISA violations Signage outside Caesars Palace hotel and casino in Las Vegas. A 401(k) plan participant has filed a class-action lawsuit against Caesars Entertainment Corp., Las Vegas, and Russell Investments, alleging the company and the money manager breached their fiduciary duties in the investment management of the plan. The lawsuit, filed May 19 in U.S. District Court in Las Vegas on behalf of plaintiff Maggie Thomson, alleges Caesars Entertainment breached its fiduciary duties under the Employee Retirement Income Security Act of 1974 by outs...