For commercial CFAs, the client is responsible for all expenses and withdrawals. Most jurisdictions in the United States prohibit working for contingency costs in criminal matters or certain types of family claims, as specified in Rule 1.5(d) of the American Bar Association`s Model Rules of Professional Conduct.  However, some jurisdictions allow contingency costs in criminal matters. It depends on the lawyer, the nature of the case and the fee agreement. In the United States, contingency fees are the norm in personal injury cases and are less prevalent in other types of litigation. .