In accordance with Local Rule. A disengagement letter serves to make clear that a client has ceased to be a current client for conflict of interest analysis.An end of representation letter serves as a professional and ethical marker to indicate the end of a specific attorney-client relationship. We believe the court will grant our request for leave to withdraw from your case. This article addresses the rules governing California lawyers who seek to withdraw or disengage from representing a client in civil proceedings. Make yourself available to the new attorney if needed. Generally, an attorney should send a closing letter to confirm that the representation has terminated and to thank the client for their business. There are numerous reasons why. The two biggest reasons are the attorney isn't being paid or the attorney has lost contact with the client. Make yourself available to the new attorney if needed.