Signature as it will appear on contract or other document (Complete only in presence of notary):. Authorized signatures are now required for each signatory on the CASL Form.Contact Tanesha (tanesha. Send letter of signature authority on letterhead via email, link, or fax. You can also download it, export it or print it out. My attestation of the residence of the child shall be sufficient evidence of such and presentation of this signed formed constitutes my attestation. Signature: The affiant must sign the affidavit in the presence of a notary public or another authorized official. The signature should be dated. Best of my knowledge, the employee is authorized to work in the United States. Address : 111 Main Street Boston, MA 34567 authorize the person mentioned below to act on my behalf in all possible manners.