In our increasingly mobile society, psychologists may be presented with greater opportunities to practice in jurisdictions outside of their licensure. Interjurisdictional practice has been particularly common under circumstances of litigation involving the services of psychological experts. Psychologists practicing elsewhere must abide by local licensing laws, which are not readily accessible. We sought clarification by surveying regulatory boards of the United States, Canada, and U.S. territories. Most jurisdictions allow interjurisdictional practice but with a variety of restrictions. A sizable minority of jurisdictions forbids such practice entirely. Disciplinary action for noncompliance may range from injunction to incarceration. Mobility programs and preventive measures can minimize risk.

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