StateUniversity.com explains that court clerks are responsible for many of the administrative duties of the court system. These systems include city, county, state and federal courts.
In each of these systems, court clerks typically report and transcribe minutes, create docket schedules for cases, and swear in jurors and witnesses, according to StateUniversity.com. In some courts the court clerk is also responsible for swearing in new U.S. citizens, processing passports, reviewing legal documents, and speaking directly with lawyers and judges. CareerPlanner.com adds that court clerks also answer questions asked by the public about the legal system, including court dates, fees, summons and warrants.