According to a recent analysis by Aon, a retirement company, millions of people, including teachers, who save for retirement using 403(b) plans may be losing nearly $10 billion each year in excessive investment fees. Unlike 401(k) retirement plans, which are covered by the Employee Retirement Income Security Act of 1974 and tightly regulated by the Labor Department, 403(b) plans have limited federal oversight and are often laden with excessive fees and costly investment options. (The New York Times)