The IRS has issued a reminder to employers and retirement plan administrators that they must amend their employees' retirement plans to comply with the changes made by the "GUST" laws by the February 28, 2002, deadline. The deadline affects qualified retirement plans, including Code Sec. 401(k) plans, defined benefit pension plans, profit-sharing plans, ESOPs and Keogh plans.An exception to the February 28, 2002, deadline exists for plans with a fiscal year other than a calendar year. The deadline for those plans is the last day of the fiscal year that began in 2001.