Idaho Admin. Code r. 37.01.01.355
A person who is not a party and is not called by a party as a witness who desires to testify at hearing is a public witness. Public witnesses do not have the right to examine witnesses or otherwise participate in the proceedings as parties. Subject to Rules 555 and 557, public witnesses have a right to introduce evidence at hearing by written or oral statements and to offer exhibits at hearing. Public witnesses are bound by scheduling orders issued in a contested case regarding disclosure of expert reports and exhibits prior to the hearing. A person intending to present public witness testimony shall notify the agency in writing at least five (5) days prior to the hearing and include the name and address of the witness and the general nature or subject matter of the testimony to be given. If the notice is not given, the public witness testimony will only be allowed at the discretion of the presiding officer upon a finding of good cause. Public witnesses are subject to cross-examination and exhibits offered by public witnesses are subject to objection. Public witnesses have no right to seek reconsideration, file exceptions, or appeal.
Idaho Admin. Code r. 37.01.01.355