Ariz. Rev. Stat. § 20-780
Individuals, partnerships and corporations of this state may make application, enter into agreement for and hold policies or contracts in or with and be a subscriber of any domestic, foreign or alien reciprocal insurer. Any corporation organized under the laws of this state shall, in addition to the rights, powers and franchises specified in its articles of incorporation, have full power and authority as a subscriber to exchange insurance contracts through such reciprocal insurance. The right to exchange such contracts is declared to be incidental to the purposes for which such corporations are organized and to be as fully granted as the rights and powers expressly conferred upon such corporations. Government or governmental agencies, state or political subdivisions thereof, boards, associations, estates, trustees or fiduciaries are authorized to exchange nonassessable reciprocal inter-insurance contracts with each other and with individuals, partnerships and corporations to the same extent that individuals, partnerships and corporations are authorized to exchange reciprocal inter-insurance contracts. Any officer, representative, trustee, receiver or legal representative of any such subscriber shall be recognized as acting for or on its behalf for the purpose of the contract but shall not be personally liable upon the contract by reason of acting in such representative capacity.
A.R.S. § 20-780