Withdrawing from a case usually comes from irreconcilable differences between attorney and client. The manner and means of terminating that relationship can affect the likelihood that a malpractice claim will be presented.
First, know and follow the procedures applicable in your jurisdiction. Many states provide in their own Rules of Professional Conduct when withdrawal is mandatory and when it is permissive. Other states follow the ABA Model Code of Professional Responsibility (DR 2-110) or the Model Rules of Professional Conduct (Rule 1.16).
When a matter is pending in a tribunal, your jurisdiction will likely have specific requirements to follow. ABA Ethical Consideration 2-32 provides a good overview of the considerations to keep in mind:
Considerations when Withdrawing from a Case
A lawyer should not withdraw without careful consideration and attempt to minimize the […]