Except as otherwise provided by law, all court personnel shall be included in the state employee personnel system; provided, that job descriptions, regulations, rates of compensation and administrative procedures applicable to court personnel shall be established by the Administrative Director of Courts after consultation with the state employee personnel system; provided, that for any court official or employee with a salary rate which, immediately before October 10, 1975, exceeded the salary rate provided by this title, the county where the court for which he works is located must supplement his salary to an extent sufficient to maintain such former higher rate.