If a temporary labor certification is granted, the CO will send the approved Application for Temporary Employment Certification and a Final Determination letter to the employer by means normally assuring next day delivery, including electronic mail, and a copy, if applicable, to the employer's attorney or agent. If the Application for Temporary Employment Certification is electronically filed, the employer must sign the certified Application for Temporary Employment Certification as directed by the CO. The employer must retain a signed copy of the Application for Temporary Employment Certification and the original signed Appendix B of the Application, as required by § 655.56.