To view an example of a money order from Western Union, click here. Employers and employees must complete their respective sections of Form I9.The form is used to document verification. To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. All employers must complete and retain Form I9, Employment Eligibility Verification, for every person they hire for employment after Nov. Filling Out a Money Order to Pay the Form I-765 Filing Fee. Below is information on filling out sections of a money order. You must fill out Form I-589 to apply for this form of relief.