In what circumstances will an attorney have to produce time records in order to recover attorney fees?

"To enable the trial court to determine whether attorney fees should be awarded and in what amount, an attorney should present '(1) evidence, documentary and oral, of the services actually performed; and (2) expert opinion, by [the applicant] and other lawyers, as to what would be a reasonable fee for such services.' [Citations.] 'In many cases the trial court will be aware of the nature and extent of the attorney's services from its observation of the trial proceedings and the pretrial and discovery proceedings reflected in the file.' [Citation.] However, in the absence of such crucial information as the number of hours worked, billing rates, types of issues dealt with and appearances made on the client's behalf, the trial court is placed in the position of simply guessing at the actual value of the attorney's services. That practice is unacceptable and cannot be the basis for an award of fees. [] . . . [] In California, an attorney need not submit contemporaneous time records in order to recover attorney fees, although an attorney's failure to keep books of account and other records has been found to be a basis for disciplinary action. [Citation.] Testimony of an attorney as to the number of hours worked on a particular case is sufficient evidence to support an award of attorney fees, even in the absence of detailed time records. [Citations.]" (Martino v. Denevi (1986) 182 Cal.App.3d 553, 558-559.)