Ala. Code § 25-2-21

Any employer, owner or other person in interest, being dissatisfied with any rule or regulation of the board of appeals, may commence an action in the circuit court of the county wherein such employer, owner, or other person in interest resides, or has his or its principal place of business against the Secretary of Labor as defendant to enjoin and set aside any such rule or regulation on the ground that it is invalid or unreasonable. The defendant shall be served with a copy of the complaint. Service of the complaint may be made by serving a copy or second original by the sheriff or any deputy sheriff of any county wherein the Secretary of Labor may be found, or by filing a copy in the office of the Secretary of Labor.