At issue in this mandamus proceeding is whether the trial court in the underlying workers compensation case abused its discretion by ordering the production of an investigative report prepared after notice of injury was filed with the Industrial Accident Board but before an appeal to a district court. The Court of Appeals for the Fourth District of Texas held that the trial court abused its discretion and that the information obtained in the post-accident investigation was privileged under rule 166b(3)(d) of the Texas Rules of Civil Procedure. The court of appeals directed the trial court to vacate its order. 751 S.W.2d 551. Relator George Flores seeks mandamus from this court directing the court of appeals to vacate its order. Because we hold that the trial court did not abuse its discretion, we conditionally grant the writ of mandamus.