Business visitors must prove that their main source of income and their main place of business are outside Canada.
You aren’t considered a business visitor, and may need to get a work permit, if you’re doing work for a Canadian company. For example, you’re an employee sent by a foreign company to fulfill a contract with a Canadian company.
Business visitors and business people are not the same. Business people come to do work in Canada under a free trade agreement. Learn more about business people.