Supplemental retirement plans include the Mississippi Deferred Compensation Plan and Trust 457 for all benefits-eligible employees. In addition, all employees are eligible to enroll in a Tax Deferred Annuity 403(b). Contributions for these plans are made by the employee only and deducted with pre-tax dollars. There are limits to the amount of contributions employees can make each year, and other restrictions apply. Enrollment is available at any time.