A party may not request a hearing before the Commission or a hearing panel, or file a motion for rehearing before the Commission or for reconsideration of the final decision of the Commission, if a civil action based upon the same claim has already been initiated in any court in this State or has already been submitted to mediation or arbitration pursuant to the provisions of NRS 38.300 to 38.360, inclusive
Nev. Admin. Code § 116.630
NRS 116.615