Attorneys are not required to do a certain number of hours per year. Rather, attorneys are required to complete an assigned pro bono case, no matter how many hours that may require. Further, there is no requirement that an attorney complete a certain number of pro bono cases a year. Attorneys are called upon whenever their name reaches the top of the list. For example, depending on the county, an attorney may be required to complete two cases a year or one case every two years.