ABA Model Rule 5.5 prohibits a lawyer from practicing law in any U.S. jurisdiction where they are not admitted, and from establishing an office or other systematic presence there, while permitting narrow forms of temporary practice, in-house and government work, and, under later ABA guidance, remote work from a state where the lawyer is not licensed. The rule is part of the ABA’s Model Rules of Professional Conduct, which are not binding on their own but serve as the template most state supreme courts use when adopting their own ethics rules. Nearly every state has adopted some version of it, so the framework below shapes cross-border practice across the country.
The Core Prohibition Under 5.5(a)
Rule 5.5(a) is straightforward. A lawyer cannot practice law in a jurisdiction where doing so would violate that jurisdiction’s regulations, and cannot help anyone else do so either.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law The second half matters more than most lawyers realize. Telling a paralegal to draft documents or advise clients in ways that cross into legal practice can expose the supervising attorney to the same unauthorized-practice violation as if they had done the work themselves.
What counts as “practicing law” varies by state, but the core activities are consistent: representing someone in court, drafting legal documents that affect rights or obligations, and providing individualized legal advice tailored to a specific person’s situation. Consequences run from professional discipline (reprimand, suspension, or disbarment) to civil liability and, in many states, criminal prosecution. Most states classify unauthorized practice as a misdemeanor, though some treat repeat offenses or aggravated cases as felonies.
Systematic and Continuous Presence Under 5.5(b)
Rule 5.5(b) adds a second layer of prohibition beyond simply practicing without a license. A lawyer who is not admitted in a jurisdiction cannot establish an office or maintain any other systematic and continuous presence there for the purpose of practicing law.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law The rule also bars holding yourself out as admitted in a jurisdiction where you are not.
The ABA’s official comment clarifies that “systematic and continuous” presence can exist even without physical presence in the jurisdiction.2American Bar Association. Comment on Rule 5.5 A lawyer who lives across a state line but regularly advertises to local residents, keeps a local phone number, or lists a local address on firm letterhead may be creating exactly the presence the rule prohibits. A single meeting across the border does not trigger it. A recurring pattern of local activity does.
The distinction matters most for websites and marketing. A firm site that lists an address in a jurisdiction where no attorney is licensed, or that targets local residents through geographic advertising, risks creating the appearance of local practice. The safest approach is to list each attorney’s actual admissions and avoid any language that implies local licensure where none exists.
The Four Safe Harbors for Temporary Practice
Rule 5.5(c) provides four exceptions that allow a lawyer admitted in one U.S. jurisdiction to provide legal services on a temporary basis in another, as long as the lawyer has not been disbarred or suspended anywhere.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law Each has its own boundaries.
Associating With Local Counsel
The first safe harbor allows an out-of-state lawyer to work on a matter in another jurisdiction when they team up with a locally admitted attorney who “actively participates” in the matter. That phrase does real work. The local attorney cannot simply lend their name to the engagement. They need to be involved enough to guide the work on local rules and procedures and to share responsibility for the product. When the requirement is treated as a formality, both lawyers are exposed.
Tribunal Proceedings and Pro Hac Vice
The second exception covers legal work connected to a pending or potential proceeding before a tribunal, where the lawyer is authorized by law or court order to appear, or reasonably expects to be. This is the foundation for pro hac vice (“for this occasion”) admission, in which a court grants temporary permission for an out-of-state lawyer to appear in a specific case. The process requires a formal motion, proof of good standing with the lawyer’s home bar, and a filing fee that varies by court.
Alternative Dispute Resolution
The third exception permits temporary services connected to arbitration, mediation, or other alternative dispute resolution, provided those services grow out of or relate to the lawyer’s practice in a jurisdiction where they hold a license. If the forum requires pro hac vice admission for the proceeding, this exception does not apply and the lawyer must go through formal admission instead.
Work Reasonably Related to Home-State Practice
The fourth and broadest exception covers legal work outside the other three categories that “arises out of or is reasonably related to” the lawyer’s practice in a jurisdiction where they are admitted. This is what allows a New York-licensed lawyer to travel to Chicago to negotiate a deal for a longstanding client, or to advise on cross-border components of a multi-state transaction. The key word is “temporary.” The more often a lawyer relies on this exception in the same state, the closer they drift toward the systematic presence 5.5(b) prohibits.
In-House Counsel and Government Lawyers Under 5.5(d)
Rule 5.5(d) carves out a permanent exception for in-house counsel and government lawyers. Unlike the temporary safe harbors in subsection (c), this provision allows a lawyer to maintain an office and ongoing presence in a jurisdiction where they are not admitted, as long as the legal services are provided to the lawyer’s employer or its organizational affiliates.1American Bar Association. Rule 5.5 Unauthorized Practice of Law Multijurisdictional Practice of Law The rationale is that a corporate employer is a sophisticated client that can evaluate its own lawyer’s competence, so the consumer-protection concerns behind the general prohibition are less acute.
The exception has real limits. In-house lawyers practicing under 5.5(d) generally cannot appear in court on behalf of their employer without pro hac vice admission. Many states require in-house counsel practicing under this exception to register with the local bar and pay an annual fee. Failing to register can forfeit the right to practice under the rule entirely, so treating registration as optional is a career-level mistake.
The rule also covers lawyers authorized to practice in a jurisdiction by federal law or other specific statutes. Patent attorneys admitted before the U.S. Patent and Trademark Office, for example, may handle patent matters in any state regardless of state bar admission.
Whether an in-house lawyer registered under 5.5(d) can also do pro bono work for members of the public depends heavily on the state. A few states allow it broadly. Many permit it only through an approved legal services organization or under a locally licensed lawyer’s supervision. Some states are silent. Check the local rule before volunteering.
Remote Practice and ABA Formal Opinion 495
Remote work forced the profession to confront a question Rule 5.5 did not originally anticipate: does a lawyer working from home in a state where they are not licensed violate the unauthorized-practice rules? In December 2020, the ABA Standing Committee on Ethics and Professional Responsibility answered through Formal Opinion 495.
The opinion concludes that a lawyer’s physical location does not, by itself, establish the kind of practice presence Rule 5.5 prohibits. A lawyer may work remotely from a jurisdiction where they are not admitted, practicing the law of their licensing jurisdiction, as long as the local jurisdiction has not specifically determined that the conduct constitutes unauthorized practice.3American Bar Association. Formal Opinion 495 Maintaining Compliance with Ethical Rules from Your Couch Work permitted under the temporary practice provisions of 5.5(c) or (d) also remains available, including matters involving other states’ law or federal law.
The opinion imposes practical conditions. Remote lawyers must not hold themselves out as licensed in their physical location, must not advertise or list a local address, and must not offer legal services to people in the local jurisdiction. Letterhead, email signatures, business cards, and websites should reflect only the jurisdictions where the lawyer is actually admitted.3American Bar Association. Formal Opinion 495 Maintaining Compliance with Ethical Rules from Your Couch The core idea is that a remotely working lawyer should be “invisible as a lawyer” in the local jurisdiction.
One caveat. Opinion 495 reflects the ABA’s interpretation of the Model Rules, but individual states may take a different view. Some have issued their own guidance, and a few are more restrictive. If you are relocating or working remotely for an extended period, confirm whether the state where you physically sit has adopted or diverged from the opinion’s reasoning.
What Happens When a Lawyer Crosses the Line
Violating Rule 5.5 hits the lawyer’s license, the lawyer’s fees, and the client’s case.
Fee Forfeiture
In Birbrower, Montalbano, Condon & Frank v. Superior Court, the California Supreme Court held that a law firm practicing without authorization in a state forfeits its right to collect fees for the unauthorized work. A New York firm that traveled to California repeatedly to advise a California client lost the ability to recover fees for services performed in California, even though the firm had a valid fee agreement.4Justia Law. Birbrower, Montalbano, Condon and Frank v. Superior Court (1998) The fee agreement remained enforceable only to the extent the firm could separate fees earned for legitimate New York work from fees tied to the unauthorized California services. Losing fees after months or years of work is devastating, and it can happen even when the underlying legal work was competent and the client was satisfied.
Impact on the Client’s Case
Clients bear consequences too. Courts have dismissed actions, struck pleadings, voided judgments, and initiated contempt proceedings when a lawyer is found to have practiced without authorization. Attorney-client privilege may survive if the client reasonably believed the lawyer was authorized, but that protection requires the client to prove a bona fide belief in the lawyer’s credentials, and a client who should have known better may lose the privilege entirely.
Discipline, Criminal Charges, and Insurance
A lawyer who engages in unauthorized practice can face sanctions from both their home jurisdiction and the jurisdiction where the conduct occurred, ranging from public censure to suspension to permanent disbarment. Many states also treat unauthorized practice as a criminal offense, from misdemeanor charges carrying up to a year of jail time to felonies in aggravated cases. Malpractice insurance policies generally exclude coverage for willful misconduct or violation of law, so a lawyer disciplined for unauthorized practice may be uninsured for any related claims.
Related Rules the Searcher Will Bump Into
Supervising Nonlawyer Staff (Rule 5.3)
Rule 5.3 connects directly to unauthorized-practice concerns by placing responsibility on lawyers for the conduct of their nonlawyer employees. Partners and managerial lawyers must ensure the firm has measures in place to keep nonlawyer conduct compatible with the lawyer’s own professional obligations, and direct supervisors must take reasonable steps to the same end.5American Bar Association. Rule 5.3 Responsibilities Regarding Nonlawyer Assistance Paralegals, legal assistants, and intake staff can collect information, check for conflicts, and explain how billing works, but they cannot give legal advice, set fees, or decide whether to accept a client. A lawyer who knows a nonlawyer employee is crossing these lines and fails to intervene is personally responsible for the violation.
Which Rules Apply Across State Lines (Rule 8.5)
When a lawyer practices across state lines, Rule 8.5 governs which jurisdiction’s ethics rules apply and who can discipline the lawyer.6American Bar Association. Rule 8.5 Disciplinary Authority Choice of Law A lawyer admitted in a jurisdiction is subject to that jurisdiction’s discipline regardless of where the conduct occurred, and a lawyer not admitted is also subject to a jurisdiction’s discipline if they provide or offer legal services there. On choice of law, tribunal proceedings are governed by the rules of the jurisdiction where the tribunal sits; for everything else, the rules of the place where the conduct occurred apply, unless the predominant effect is in a different jurisdiction. The rule includes a safe harbor for lawyers who conform their conduct to the rules of the jurisdiction where they reasonably believed the predominant effect would occur.
A Note on Foreign Lawyers
Rule 5.5 accommodates foreign-trained lawyers in limited ways, and it is not a general license for foreign attorneys to practice U.S. law. A lawyer admitted in a foreign jurisdiction may provide in-house services to their employer under the same framework as U.S.-licensed in-house counsel, with one added requirement: advice on the law of a U.S. jurisdiction must be based on guidance from a lawyer licensed there. Beyond in-house work, many states offer a Foreign Legal Consultant license that allows lawyers admitted in other countries to advise on the law of their home country without taking a U.S. bar exam. Foreign legal consultants generally cannot advise on U.S. law or hold themselves out as members of any U.S. state bar.