A business manager is a person who drives the work of others in order to run a major business efficiently and make a large profit. He or she should have working knowledge of the following areas, and may be a specialist in one or more: sales, marketing and public relations; research, operations analysis, data processing, mathematics, statistics and economics; production; finance; accounting, auditing, taxes and budgeting; purchasing; and personnel. Other technical areas in which a business manager may have expertise are law, science, and computer programming.