Rules of Professional Conduct
5. Law Firms and Associations
ER 5.5. Unauthorized Practice of Law
(a) A lawyer shall not practice law in a jurisdiction in violation of the regulation of the legal profession in that jurisdiction, or assist another in doing so.
(b) A lawyer who is not admitted to practice in this jurisdiction shall not:
(1) except as authorized by these Rules or other law, establish an office or other systematic and continuous presence in this jurisdiction for the practice of law; or
(2) hold out to the public or otherwise represent that the lawyer is admitted to practice law in this jurisdiction.
(c) A lawyer admitted in another United States jurisdiction, and not disbarred or suspended from practice in any jurisdiction, may provide legal services on a temporary basis in this jurisdiction that:
(1) are undertaken in association with a lawyer who is admitted to practice in this jurisdiction and who actively participates in the matter.
(2) are in or reasonably related to a pending or potential proceeding before a tribunal in this or another jurisdiction, if the lawyer, or a person the lawyer is assisting, is authorized by law or order to appear in such proceeding or reasonably expects to be so authorized;
(3) are in or reasonably related to a pending or potential arbitration, mediation, or other alternative dispute resolution proceeding in this or another jurisdiction, if the services arise out of or are reasonably related to the lawyer's practice in a jurisdiction in which the lawyer is admitted to practice and are not services for which the forum requires pro hac vice admission; or
(4) are not within paragraphs (c)(2) or (c)(3) and arise out of or are reasonably related to the lawyer's practice in a jurisdiction in which the lawyer is admitted to practice.
(d) A lawyer admitted in another United States jurisdiction, or a lawyer admitted in a jurisdiction outside the United States, not disbarred or suspended from practice in any jurisdiction, and registered pursuant to Rule 38(i) of these rules, may provide legal services in this jurisdiction that:
(1) are provided to the lawyer's employer or its organizational affiliates and are not services for which the forum requires pro hac vice admission; or
(2) are services that the lawyer is authorized to provide by federal law or other law of this jurisdiction.
(e) Any attorney who engages in the authorized multijurisdictional practice of law in the State of Arizona under this rule must advise the lawyer's client that the lawyer is not admitted to practice in Arizona, and must obtain the client's informed consent to such representation.
(f) Attorneys not admitted to practice in the State of Arizona, who are admitted to practice law in any other jurisdiction in the United States and who appear in any court of record or before any administrative hearing officer in the State of Arizona, must also comply with Rules of the Supreme Court of Arizona governing pro hac vice admission.
(g) Any attorney who engages in the multijurisdictional practice of law in the State of Arizona, whether authorized in accordance with these Rules or not, shall be subject to the Rules of Professional Conduct and the Rules of the Supreme Court regarding attorney discipline in the State of Arizona.
 The definition of the practice of law is established by law and varies from one jurisdiction to another. 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 (b) 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.
 Lawyers who are not members of the State Bar of Arizona may comply with paragraph (b)(2) by stating in any advertisement or communication that targets or specifically offers legal services to Arizona residents that: (1) the non-member is not licensed to practice law by the Supreme Court of Arizona; or (2) the non-member’s practice is limited to federal or tribal legal matters (for example, a non-member may state his or her practice is limited to immigration matters).