Yes. A written retainer agreement protects both the client and the lawyer and avoids disputes. It is the best way to ensure that the terms of the agreement reached between a client and lawyer is legally binding. It also is a great way to protect a client’s rights. In Ontario, if the retainer deals with a contingency fee arrangement, it must be in writing to be legally valid. In many cases, the agreements are short, simple and easy to understand. In all cases, you should read the entire agreement and ask for clarification where needed before you sign the agreement.