A petition for change of venue can only be filed after a case has been established with the Workers' Compensation Appeals Board (WCAB). When you are ready to.You just do a Request for Order (FL300) and request a change of venue. Attach a declaration with the facts of the move and your ex being out of the State. This document is a notice of motion and motion for change of venue filed in a California Superior Court. The document discusses filing a motion to change the venue of a court case from one county to another based on the residence of the defendant. An application for a change of venue must be filed at least 10 days before the date set for trial. If the case is dismissed, the Plaintiff will have to re-file the case at the right court location. Court forms are available at California Courts – Forms. To move your case to another court, you must make a "Motion to.