Kan. Admin. Regs. § 48-1-3
No referee shall participate in the hearing of an appeal in which the referee has an interest. All challenges to the interest of any referee shall be made to the referee on or before the date set for the hearing unless good cause is shown for later challenges. Each challenge to the interest of a referee shall be heard and decided immediately by the referee or, at the referee's discretion, referred to the board of review. If the challenge is not heard immediately or is referred to the board of review, the hearing of the appeal shall be continued until the disposition of the challenge. The referee shall cause all parties to be notified of the new date set for the hearing by mailing a notice to the last known address of all parties to the appeal at least five days before the date set for the hearing.
Kan. Admin. Regs. § 48-1-3