"Telecommuting" refers to a working arrangement or work style where an employee regularly does his or her work off-site, or outside of the principal office. Telecommuters typically work from home one or more days a week and communicate with the office using telephones and over the Internet.
Telecommuting is a type of flexible work arrangement, which can include other non-traditional setups like flexible schedules. The term, however, does not describe situations where employees sometimes take work home with them or where an employees's job involves a lot of off-site work or travel (e.g., sales).
See also: telework and FAQ: What's the difference between telecommuting and telework?

