In any proceeding, if the petitioners or parties waive hearing, the commission may dispose of the matter upon the basis of the pleadings or submittals and the investigation.

(Authorized by K.S.A. 1979 Supp. 25-4119a, 46-253; effective, E-76-52, Oct. 24, 1975; effective, E-77-20, May 1, 1976; effective Feb. 15, 1977; amended May 1, 1980.)