§ Rule 4-3.7 Lawyer as Witness
Rule 4-3.7. Lawyer as Witness
(a) When Lawyer May Testify. A lawyer shall not act as advocate at a trial in which the lawyer is likely to be a necessary witness on behalf of the client unless:
(1) the testimony relates to an uncontested issue;
(2) the testimony will relate solely to a matter of formality and there is no reason to believe that substantial evidence will be offered in opposition to the testimony;
(3) the testimony relates to the nature and value of legal services rendered in the case; or
(4) disqualification of the lawyer would work substantial hardship on the client.
(b) Other Members of Law Firm as Witnesses. A lawyer may act as advocate in a trial in which another lawyer in the lawyer's firm is likely to be called as a witness unless precluded from doing so by rule 4-1.7 or 4-1.9.