A few states, for example, Arizona, limit the utilization of the words "expert" or "practice" to lawyers who have acquired an affirmation from the State Bar Board of Legal Specialization in a particular field of law, with one such confirmation being in the zone of personal injury law. In a few locales, or by temperance of the retainer assertion between a lawyer and customer, the measure of the legitimate charge may shift contingent on whether a case settles under the watchful eye of a claim is recorded.