What is a requirement for a contingency fee agreement?

A contingency fee agreement is a specific type of contract between a lawyer and a client, where the lawyer's fees are contingent upon the outcome of the case. The requirement that such agreements must always be in writing and signed by the client is critical to ensure there is clarity and mutual understanding of the terms involved, including the percentage the lawyer will receive if the case is successful and any other relevant details.

Having the agreement in writing serves several important functions: it provides documented proof of the terms agreed upon, helps prevent misunderstandings over the fee structure, and aligns with ethical obligations placed on attorneys to clearly communicate their fees. Different jurisdictions may have specific rules regarding the formation of such agreements, but in general practice, written agreements are the standard to protect both parties.

In contrast, verbal agreements or implied understandings lack the formal documentation that can protect the interests of the client and lawyer alike, making option B the correct and appropriate choice.