Must a law firm withdraw from representing a client in a lawsuit when the law firm hires an employee who is not a lawyer, paralegal or secretary but who was previously employed by the law firm that represents the opposing party in the lawsuit?
Firm A is a law firm representing the plaintiff, and Firm B is a law firm representing the defendant in a lawsuit. While the lawsuit is pending, Firm A hires a marketing assistant who had been previously employed as a marketing assistant at Firm B. Firm A seeks to determine whether it must withdraw from representing the plaintiff in the lawsuit, and if not, whether it must utilize screening procedures to prevent the new employee from being involved in the representation of the plaintiff and from sharing confidential information concerning the defendant with anyone in Firm A.
Tex. Comm. On Professional Ethics, Op. 650 (2015)