All employers must complete and retain Form I9, Employment Eligibility Verification, for every person they hire for employment after Nov. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security.Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order. Employers and employees must complete their respective sections of Form I9. The form is used to document verification. Do NOT sign the back of the money order. Leave that portion entirely blank.