(1) Service is the act of delivering a copy of documents to the opposing party. Service gives the opposing party notice of the request for hearing or other action. When a document is given to a party, that party is considered served with official notice of the contents of the document.

(2) A party may serve another party by:

(a) Personal service (hand delivery);

(b) First class, registered, or certified mail;

(c) Fax, if the party also mails a copy of the document the same day;

(d) Commercial delivery service; or

(e) Legal messenger service.

(3) A party cannot serve documents by email.

(4) A party must serve all other parties or a party's representative, if the party is represented, whenever the party files a pleading (request for hearing), brief or other document with OAH or the review judge or when required by law.

(5) Service is complete when:

(a) Personal service is made;

(b) Mail is properly stamped, addressed and deposited in the United States mail;

(c) Fax produces proof of transmission;

(d) A parcel is delivered to a commercial delivery service with charges prepaid; or

(e) A parcel is delivered to a legal messenger service with charges prepaid.