Kan. Admin. Regs. § 84-2-3
Any third party having a legitimate interest in any proceedings may file a petition of intervention setting forth facts sufficient to establish such interest and requesting that the board resolve contested factual matters in its favor. In the alternative any third party may be joined upon a motion by the board, its designee or the presiding officer. Any organization which has a signed, valid memorandum of agreement encompassing the proposed unit or any portion thereof shall be considered to have a legitimate interest in any proceedings upon presentation of same. If the intervention is pursuant to K.A.R. 84-2-11(e) the petition must be accompanied with a 30% showing of interest in accordance with K.S.A. 75-4327(d).
Kan. Admin. Regs. § 84-2-3