N.D. Cent. Code § 52-02-04

General and special rules may be adopted, amended, or rescinded by the bureau only after public hearing or opportunity to be heard thereon, of which proper notice has been given. General rules become effective ten days after filing with the secretary of state and publication in one or more newspapers of general circulation in this state. Special rules become effective ten days after notification or mailing to the last-known address of the individuals or concerns affected thereby. Regulations may be adopted, amended, or rescinded by the bureau and become effective in the manner and at the time prescribed by the bureau.