First, in-house counsel should make certain that participants in privileged communications understand the need to preserve their confidence. Under Arizona law, the attorney-client privilege is codified both in the civil and criminal contexts.Learn about how clients are assigned to the office of the Legal Advocate, what the Legal Advocate is, decisions on your case, file retention and more. In-house counsel registration is for those lawyers not admitted to practice in Arizona who are employed within the State of Arizona as in-house counsel. The attorney-client privilege extends to clients, clients' representatives, lawyers and lawyers' representatives—the circle of trust. Privilege (Sales) Tax. Departments. One final consideration arises in the context of in-house counsel. Privilege (Sales) Tax. Departments. It is extremely rare for a Gilbert Utility employee to show up at a customer's home without an appointment. Source of pride: "Working alongside admirable attorneys at CDQ and soaking up knowledge in every way that I possibly can for the benefit of our clients.