The 457(b) is a supplemental retirement plan that allows employees to set aside payroll-deducted contributions on a pre or after-tax basis. Deferred compensation refers to money received in one year for work performed in a previous year often many years earlier.A 457(b) plan is a tax-deferred retirement savings plan. Funds are withdrawn from an employee's income without being taxed and are only taxed upon withdrawal. This Directive addresses the new withholding law requiring State income tax to be withheld from pension payments to residents of this State. Deferred compensation plans are designed for state and municipal workers, as well as employees of some tax-exempt organizations. Employee is Hired Obtain a North Carolina Employee's Withholding Allowance Certificate, Form NC-4,. State employees are eligible for many valuable Benefits in addition to their regular pay.