All foreign workers require an employment authorization in order to be paid in Canada.
Note that HRDC's role is to assess the validity of the position - not the foreign worker. If you are hiring a foreign worker that is self-funded, the foreign worker may still require an employment authorization. Please note that CIC makes the decision on whether an unpaid foreign worker requires an employment authorization - this decision is based on CIC's interpretation of the foreign worker 's activities in Canada. Foreign workers whose positions do not require HRDC validation must receive a letter of invitation. Foreign workers whose positions do require HRDC validation must be the successful candidate for an advertised position following elimination of Canadian applicants.