Wis. Stat. § 90.15
A fence viewer is entitled to the following fees and expenses for services rendered under this chapter: daily employment, mileage, service of notice or process and folios written. The rate of pay for the fees and expenses shall be set by the viewer's city, village or town. The fees and expenses shall be paid equally by the parties to the controversy, and if any of them neglect to pay the same within 30 days after the services are performed, each fence viewer may recover from delinquent parties jointly double the amount of the fees and expenses. A fence viewer who neglects to perform his or her duties shall forfeit $5 and be liable to the injured party for damages. Fence viewers may administer oaths for purposes of this chapter.
Wis. Stat. § 90.15