In the state of Wisconsin, there are no specific provisions pertaining to bounty hunters.  A bounty hunter must follow the general law of the state in performing his/her functions.

Wis. Stat. § 818.21 provides that, for the purpose of surrendering the defendant the sureties, at any time before they are finally charged, may arrest the defendant or by a written authority endorsed on a certified copy of the bond may empower any discreet person to do so.  Pursuant to Wis. Stat. § 969.12, a surety may not be compensated for acting as such a surety.