Data entry keyers usually input lists of items, numbers, or other data into computers or complete forms that appear on a computer screen. They also may manipulate existing data, edit current information, or proofread new entries into a database for accuracy. Some examples of data sources include customers’ personal information, medical records, various registration forms, and membership lists. Usually, this information is used internally by a company and may be reformatted before other departments or customers utilize it.

In addition to being affected by technology, employment of data entry and information processing workers will be adversely affected by businesses that are increasingly contracting out their work. Many organizations have reduced or even eliminated permanent in-house staff – for example, in favor of temporary employment and staffing services firms. Some large data entry and information processing firms increasingly employ workers in countries such as China with relatively lower wages. As international trade barriers continue to fall and telecommunications technology improves, this transfer of jobs will mean reduced demand for data entry keyers in the developed countries such as the United States, UK, and Australia.