The contingency fee lawyer will not receive any payment from you if the case is lost. You will lose nothing if they lose unless there is a provision within the initial contract. You may have to pay filing and court costs when a case is lost. However, these charges will be in the initial agreement. You must review the entire contract before signing it during your initial consultation. You must understand how the fee structure works, win or lose. Once You sign an agreement, there is no going back, and if you agree to pay specific fees and costs, you will be liable for those even if your attorney loses your case.