Idaho Admin. Code r. 37.01.01.414
Unless required for the disposition of a matter specifically authorized by statute to be done ex parte, a presiding officer serving in a contested case shall not communicate, directly or indirectly, regarding any substantive issue in the contested case with any party, except upon notice and opportunity for all parties to participate in the communication. The presiding officer may communicate ex parte with a party concerning procedural matters (e.g., scheduling). Communications with a presiding officer regarding non-substantive issues from members of the general public not associated with any party are not required to be reported by this rule. A party to a contested case before the agency shall not communicate directly or indirectly with the presiding officer or the agency head regarding any substantive issue in the contested case. When a presiding officer becomes aware of a communication regarding any substantive issue from a party or representative of a party or a member of the general public during a contested case, the presiding officer shall place a copy or written summary of the communication in the file for the case and order the party providing the communication to serve a copy of the communication or written summary upon all parties of record. Repeated violations of this rule are cause for the presiding officer to dismiss an action or to dismiss a party from a contested case. Written communications from a party showing service upon all other parties are not ex parte communications.
Idaho Admin. Code r. 37.01.01.414