Wis. Stat. § 893.13
This section does not toll the statute to allow an independent claim by an insurer. It simply insures that the joinder of constituent parts of a cause of action during the pendency of the action is not frustrated by the application of the appropriate statute of limitations. Aetna Casualty & Surety Co. v. Owens, 191 Wis. 2d 745, 530 N.W.2d 51 (Ct. App. 1995). The filing of an action, subsequently voluntarily dismissed, tolls the statute of limitations under sub. (2) for the period specified in sub. (1) for cases in which no appeal is taken. Johnson v. County of Crawford, 195 Wis. 2d 374, 536 N.W.2d 167 (Ct. App. 1995), 95-0144. A suit filed prior to the expiration of the 120-day period for a denial of claim under s. 893.80 is not truly commenced and does not toll the statute of limitations when filed. Colby v. Columbia County, 202 Wis. 2d 342, 550 N.W.2d 124 (1996), 93-3348. To interpret this statute to mean that a plaintiff's timely lawsuit tolled the statute of limitations as to all other possible victims would abrogate the statute of limitations. Such an interpretation would lead to absurd results and render meaningless the statute of limitations in multiple-victim cases. Barnes v. WISCO Hotel Group, 2009 WI App 72, 318 Wis. 2d 537, 767 N.W.2d 352, 08-1884. Aetna does not establish that whenever a person intervenes in a pending lawsuit, asserting claims identical to, although not constituent of, those of the original parties, the intervenor receives the benefit of tolling under sub. (2). Only a person having one of the three "constituent parts" of an original, timely cause of action under s. 803.03(2) (a), i.e., subrogation, derivation, or assignment, may successfully intervene in a pending action without regard to the statute of limitations. Town of Burnside v. City of Independence, 2016 WI App 94, 372 Wis. 2d 802, 889 N.W.2d 186, 16-0034.