The withdrawals are also subject to state income tax. Once you terminate service (e.g.Nassau County employees can access their 457b retirement accounts to check balances, view their retirement plan activity and more. For more information on loans, contact the. Louisiana Deferred Compensation Plan at . 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 Funds are withdrawn from an employee's income without being taxed and are only taxed upon withdrawal. Log into a 401(k), 403(b), 457, or other workplace plan. Log into retirement plan.