Tennessee Code Title 8. Public Officers and Employees § 8-18-112

Whenever any officer is authorized or required to appoint a deputy, such deputy, before proceeding to act, shall take the constitutional oaths and oath of office, which shall be accompanied by the same certificate, filed in the same office, and with the same endorsement, as the oaths of such deputy's principal. This section do not apply to deputies who may be employed in particular cases only.