A consultant (from Latin: consultare "to discuss") is a professional who provides professional or expert advice in a particular area such as security (electronic or physical), management, accountancy, law (tax law, in particular), human resources, marketing (and public relations), finance, engineering, or any of many other specialized fields.

A consultant is usually an expert or a professional in a specific field and has a wide knowledge of the subject matter. The role of consultant outside the medical sphere (where the term is used specifically for a grade of doctor) can fall under one of two general categories:

  • Internal Consultant - someone who operates within an organisation but is available to be consulted on areas of specialism by other departments or individuals (acting as clients); or
  • External Consultant - someone who is employed externally (either by a firm or some other agency) whose expertise is provided on a temporary basis, usually for a fee. As such this type of consultant generally engages with multiple and changing clients.

The overall impact of a consultant is that clients have access to deeper levels of expertise than would be feasible for them to retain in-house, and may purchase only as much service from the outside consultant as desired.

'Consultant' is also the term used to denote the most senior medical position in the United Kingdom, Australia and Ireland (e.g., a consultant surgeon).

Read more about Consultant:  Ways of Work, Common Types, Place of Work, Qualifications

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