A disengagement letter serves to make clear that a client has ceased to be a current client for conflict of interest analysis.
Every time you want to decline to represent a prospective client, you should use a non-engagement letter. Otherwise, you risk the possibility that the prospective client could mistakenly think you're their attorney on a matter.
Even if the matter is not pending before a tribunal, the ethics rules of most states provide that a lawyer cannot withdraw until he or she has taken reasonable steps to avoid foreseeable prejudice to the rights of his client, such as giving notice to the client, allowing time for employment of other counsel, delivering ...
One of the best ways to approach this is to send an email to the inquiring client without delay. Thank them for the consideration and let them know the reasons for not being able to work with them. Be polite but direct.
Every time you want to decline to represent a prospective client, you should use a non-engagement letter. Otherwise, you risk the possibility that the prospective client could mistakenly think you're their attorney on a matter.
Communicate your decision in writing as soon as you decide to refuse their case. You should also recommend the potential client visit another lawyer who can assist them with their case. A written letter serves as a factual record that you turned down the potential client's case and explains the reason for the decision.
[Date] [Name and Address of Client] Dear [Client's Name]: This letter will confirm our understanding that effective [DATE] this firm will no longer represent you in connection with [LEGAL MATTER]. I urge you to promptly retain other counsel to represent you in this matter.