Wisconsin Administrative Code
Employment Relations Commission
ERC 30-39 - Municipal Sector Interest Dispute Resolution Processes
Chapter ERC 32 - Collective bargaining and interest arbitration in municipal sector disputes not involving law enforcement or fire fighting employees
Section ERC 32.08 - Pre-investigation procedure

After a petition or stipulation has been filed, the commission or a commission-employed investigator shall conduct an investigation with respect to the petition or stipulation, by means of either an informal investigation or a formal hearing. If, during any prior mediation by a commission mediator, the parties have exchanged and submitted to the mediator their total final offers, as well as a stipulation on matters agreed upon, the parties may waive the informal investigation or formal hearing described in s. ERC 32.09. A waiver shall be written and may accompany the petition or stipulation for initiation of interest arbitration or be filed separately later.