Questions regarding §457 maximums and refunds should be directed to Louisiana Deferred Compensation at (225) 926-8082 or toll free at (800) 937-7604. Learn about common tax and Form 990 reporting issues associated with nonqualified deferred compensation arrangements.Follow the prompts to enroll. An eligible deferred compensation plan under IRC Section 457(b) (or "section 457 plan") must meet the written plan document requirements. Deferred compensation plans allow the participant to defer income today and withdraw it at some point in the future (usually upon retirement) Cook County offers a Section 457 deferred compensation plan as a tax-deferred method for you to save for retirement.