Ariz. R. Sup. Ct. ER 5.5
COMMENT
[1] Paragraph (a) applies to the unauthorized practice of law by a lawyer, whether through the lawyer's direct action or by the lawyer assisting another person. The definition of the practice of law is established by law and varies from one jurisdiction to another. For Arizona's definition, see Rule 31(a)(2)(A). Whatever the definition, limiting the practice of law to members of the bar protects the public against rendition of legal services by unqualified persons. Paragraph (a) does not prohibit a lawyer from employing the services of paraprofessionals and delegating functions to them, so long as the lawyer supervises the delegated work and retains responsibility for their work. See ER 5.3. Likewise, it does not prohibit lawyers from providing professional advice and instruction to nonlawyers whose employment requires knowledge of law, for example, claims adjusters, employees of financial or commercial institutions, social workers, accountants and persons employed in government agencies. In addition, a lawyer may counsel nonlawyers who wish to proceed pro se.
[2] Other than as authorized by these Rules or other law or this Rule, a lawyer who is not admitted to practice in Arizona violates paragraph (b)(1) if the lawyer engages in the regular practice of Arizona law in Arizona. A lawyer who is not admitted to practice in Arizona violates paragraph (b)(2) if the lawyer fails to state in any advertisement or communication that targets or specifically offers legal services to Arizona residents that: (1) the lawyer is not licensed to practice Arizona law and (2) the lawyer's practice is limited to federal legal matters, such as immigration law, tribal legal matters, or the law of another jurisdiction. See ERs 7.1(a) and 7.5(b).
[3] There are occasions in which a lawyer admitted to practice in another United States jurisdiction, and not disbarred or suspended from practice in any jurisdiction, may provide legal services on a temporary basis in Arizona that involve Arizona law under circumstances that do not create an unreasonable risk to the interests of their clients, the public or the courts. Paragraph (c) identifies four such circumstances. The fact that conduct is not so identified does not imply that the conduct is or is not authorized.
[4] There is no single test to determine whether a lawyer's provision of legal services involving Arizona law are provided on a "temporary basis" in Arizona, and may therefore be permissible under paragraph (c). Services may be "temporary" even though the lawyer provides legal services in Arizona that involve Arizona law on a recurring basis, or for an extended period of time, as when the lawyer is representing a client in a single lengthy negotiation or litigation.
[Note: First sentence of comment [1] added effective 1/1/15.]