N.D. Cent. Code § 65-07-01

Any employer, by special contract with the organization, may secure workforce safety and insurance coverage for injuries to the employer's own person or for the employer's own death. Any employer also may secure coverage for that employer's spouse and children. Self-employed persons may contract with the organization for workforce safety and insurance coverage for themselves. In addition, any volunteer organization, not otherwise provided for under this title, may contract with the organization for workforce safety and insurance coverage for its own members while its members are engaged in the specific activity provided for in the contract.