Yes. To make these types of contributions to the plan, complete the Payroll Authorization-One-Time Deferral Form, which is available at varetire. Use this form to make changes in the amount of your deferral to your ICMARC 457 Deferred Compensation Plan.Send your completed form to: All forms are fillable and ready for download and printing. EASY TO USE – Follow step-by-step instructions for easy guidance through completing your return. ○.