In order to qualify for an unforeseeable emergency withdrawal, your situation must meet one of the Internal Revenue Service. A 457(b) plan is a tax-deferred retirement savings plan.Funds are withdrawn from an employee's income without being taxed and are only taxed upon withdrawal. You can apply for a withdrawal or rollover from your online account. Forms and Required Signatures. Complete the 457 Basic Withdrawal form for lump-sum payments and fixed dollar installment payments. You will need to indicate the amount you wish to contribute and select your investment option(s), as well as fill out a Beneficiary Designation form. Deferred compensation refers to money received in one year for work performed in a previous year often many years earlier. There are a number of rules that come with 457(b) plans, though. These include contribution limits, rollover rules, withdrawal rules and more.