Wisconsin Statutes Courts (Ch. 750 to 764) § 756.08. Oaths and affirmations

(1) The jurors selected to try the issues in the action or proceeding shall take an oath or affirmation to try the issues submitted to them and, unless discharged by the court, to give a verdict according to the law and the evidence given in court.

(2) When the issues have been submitted to the jury, a proper officer, subject to the direction of the court, shall swear or affirm that the officer will keep all jurors together in some private and convenient place until they have agreed on and rendered their verdict, are permitted to separate or are discharged by the court. While the jurors are under the supervision of the officer, he or she may not permit them to communicate with any person regarding their deliberations or the verdict that they have agreed upon, except as authorized by the court.