In some specific situations, foreigners are exempt to acquire a work permit in order to legally work in Canada. These occupations includes but not limited to:
Athletes and Coaches competing in Canada.
Aviation Accident or Incident Investigators.
Clergy.
Emergency Service Providers.
Expert Witnesses or Investigators.
Family Members of Foreign Representatives.
Foreign Government Officers.
Health Care Students.
Judges, Referees, and similar Officials for International Amateur Competitions.
Military Personnel.
News Reporters, Film and Media Crews for Foreign News Company.