Idaho Code § 44-1614

In any action arising out of the activities of an unlicensed farm labor contractor within this state who is not in the state or is otherwise unavailable for service of process in this state, the unlicensed farm labor contractor may be served by mailing a certified true copy of the summons and complaint to the director; the last-known address, if any, of the unlicensed farm labor contractor; and any other address the use of which the plaintiff knows, or on the basis of reasonable inquiry, has reason to believe is most likely to result in actual notice.