N.D. Cent. Code § 65-04-29

Any employer carrying on any employment not defined as hazardous under section 65-01-02 who complies with this title and who pays into the fund the premiums provided for under this chapter is covered under the fund and is not liable to respond in damages at common law or by statute for injuries to or the death of any employee, wherever occurring, during the period covered by such premiums. Any employee who elects before injury not to come under workforce safety and insurance may do so by notifying the organization and the employer of such election in writing.