Wis. Admin. Code § TCS 4.05 – Service of papers and documents.

(1) Manner of service. Except as otherwise specifically required, service of documents required to be served may be made by personal delivery or by mailing a copy to the last known post office address of the person to be served, in a sealed envelope with first class postage affixed, and shall be deemed to have been served upon deposit in the U.S. mails.
(2) Date of service. The date of service shall be either the day when the document served is deposited in the mail or is delivered in person.

History: Cr. Register, February, 1981, No. 302, eff. 3-1-81.