In April, the US Department of Labor (DOL) released the long-awaited and highly contested final rule redefining who is considered a fiduciary under the Employee Retirement Income Security Act of 1974 (ERISA). This revision was designed to address conflicts of interest in retirement advice by applying the fiduciary standard more broadly, to include everyone who provides investment advice to sponsors and participants in defined contribution workplace retirement plans and individual retirement accounts (IRAs). How will the DOL fiduciary rule affect plan sponsors?