The results achieved, in some circumstances, may be an element in deciding your fee. The "contingent fee" arrangement is an example. This is an arrangement often used in personal injury or collection cases where the lawyer receives no fee unless he or she recovers money for the client. If money is recovered, then the lawyer receives a percentage of the recovery agreed upon at the time the lawyer begins representing the client. The percentage is based on a number of factors including the type of case and the stage at which the case is resolved. The client must, however, be responsible for court costs, such as filing fees and depositions, and must reimburse the lawyer for any out of pocket expenses incurred by the lawyer, such as for expert witnesses or document production. Contingent fee arrangements are not permitted in domestic relations cases and criminal matters.