Investment firms or individual investment advisors may be liable under the Employee Retirement Income Security Act ("ERISA") for breaching fiduciary responsibilities with respect to the management of employer-sponsored retirement plans. ERISA establishes fiduciary responsibility for all firms or individual advisors who perform certain functions with regard to the administration and management of these retirement plans in the private sector. As fiduciaries, firms or advisors must always act in a manner that is completely consistent with the employees' best interests, which includes following the plan documents, diversifying investments, and paying only reasonable plan fees. Some actions that affect employer-sponsored retirement plans, however, do not constitute fiduciary responsibilities, but, rather, are business decisions often made by the employer itself. For instance, the nature of the plan that will be offered to employees, amendments to the plan, or termination of the plan are all aspects of the plan governed by the employer, not the fiduciaries.