5 CFR § 831.1109 - Evidence.
§ 831.1109 Evidence.
(a) Rules of evidence are not strictly applied, but the presiding officer shall exclude irrelevant or unduly repetitious evidence.
(b) Each exhibit of a documentary character shall be submitted to the presiding officer, duly marked, and made a part of the record. An exhibit does not become evidence unless received in evidence by the presiding officer.