The largest category of temporary workers is administrative and clerical workers, comprising almost half of all temporary workers in the United States. Reception, secretarial, and administrative work are some assignments in this category. In the past, collating, answering phones, typing, and filing were the major duties of temporary workers. Today, many administrative temporaries are skilled in word processing, various computer programs, and other procedures. Other administrative workers, such as medical secretaries, legal secretaries, and bookkeepers, have additional training and skills to help them better perform special duties.