Ark. Code Ann. § 23-67-305: Mandatory participation in Arkansas Workers' Compensation Insurance Plan

(a) All insurers licensed to transact workers' compensation and employers' liability insurance in this state, as defined in § 23-62-105(a)(3) and who have qualified to transact workers' compensation insurance pursuant to § 11-9-302(a) shall participate in the equitable apportionment among them of risks eligible for the Arkansas Workers' Compensation Insurance Plan.

(b) Participation in the plan expenses, profits, and losses shall be in the proportion that the net direct workers' compensation insurance premiums of each member written in this state during the preceding calendar year bears to the aggregate net direct workers' compensation insurance premiums of all members of the plan written in this state during the preceding calendar year.