Tennessee Code Title 4. State Government § 4-5-319

(a) An agency shall maintain an official record of each contested case under this chapter. The record shall be maintained for a period of time not less than three (3) years; provided, that the department of labor and workforce development shall be required to maintain the record for such period of time as shall be determined by the agency or otherwise required by law.

(b) The agency record shall consist solely of:

(c) A record, which may consist of a tape, electronic recording, or digital recording, must be made of all oral proceedings. Such record or a part thereof must be transcribed on request of a party at such party's expense or may be transcribed by the agency at the agency's expense. If the agency elects to transcribe the proceedings, then a party must be provided copies of the transcript upon payment to the agency of a reasonable compensatory fee. Notwithstanding the requirement to make a record of all oral proceedings, a record of a prehearing conference is not required to be made.

(d) Except to the extent that this chapter or another statute provides otherwise, the agency record shall constitute the exclusive basis for agency action in adjudicative proceedings under this chapter, and for judicial review thereof.