Except as otherwise expressly provided in this chapter, the enactment of this act shall not be a cause for the modification or elimination of any existing wages, hours, or terms and conditions of employment of trial court employees. However, except as to those procedures, rights, or practices described in this chapter as minimum standards, the enactment of this act shall not prevent the modification or elimination of existing wages, hours or terms and conditions of employment through the meet and confer in good faith process or, in those situations in which the employees are either exempted from representation, or are not represented by a recognized employee organization, through appropriate procedures.