Section 811.10.23. Service and filing of pleadings and other papers.

       10.23(1) When service required. Except where otherwise provided by law, every pleading, motion, document, or other paper filed in a contested case proceeding and every paper relating to discovery in such a proceeding shall be served upon each of the parties of record to the proceeding, including the person designated as advocate or prosecutor for the state or the agency. Except for the original notice of hearing and an application for rehearing as provided in Iowa Code section 17A.16(2), the party filing a document is responsible for service on all parties.

       10.23(2) Service—how made. Service upon a party represented by an attorney shall be made upon the attorney unless otherwise ordered. Service is made by delivery or by mailing a copy to the person’s last-known address. Service by mail is complete upon mailing, except where otherwise specifically provided by statute, rule, or order.

       10.23(3) Filing—when required. After the notice of hearing, all pleadings, motions, documents or other papers in a contested case proceeding shall be filed with the board.

       10.23(4) Filing—when made. Except where otherwise provided by law, a document is deemed filed at the time it is delivered to the board office, delivered to an established courier service for immediate delivery to that office, or mailed by first-class mail or state interoffice mail to that office, so long as there is proof of mailing.

       10.23(5) Proof of mailing. Proof of mailing includes either: a legible United States Postal Service postmark on the envelope, a certificate of service, a notarized affidavit, or a certification in substantially the following form:

	I certify under penalty of perjury and pursuant to the laws of Iowa that, on (date of mailing), I mailed copies of (describe document) addressed to the (agency office and address) and to the names and addresses of the parties listed below by depositing the same in the United States mail or state interoffice mail.
	(Date)	(Signature)