Wiktionary
n. travel for business purposes, often paid for at least partially by the employer.
Wikipedia
"Business Trip" is the eighth episode of the fifth season of the television series The Office, and the show's eightieth episode overall. The episode aired in the United States on November 13, 2008 on NBC.
In this episode, Michael, Oscar and Andy are sent to Winnipeg, Manitoba on a business trip, where Michael has trouble understanding the actual purpose of the concierge and Andy and Oscar bond. Meanwhile, Jim and the rest of the office eagerly wait for Pam's return from art school.
Usage examples of "business trip".
Perfect preparation for the most important business trip of your career.
One of the nicest men in town, a cotton merchant, had gone to Memphis on a business trip, only to have his wife take sick while he was gone.