Canada to implement mandatory COVID-19 vaccines for all federal workers by fall “Aviation has been one of the hardest-hit industries, and we believe requiring all WestJet Group employees to be vaccinated is the right thing to do and ensures the safest travel and work environment for everyone in WestJet’s world.”Porter said the vaccine as a requirement for employment is “essential to the safe restart of travel across Canada.”A press release for the Calgary-based airline said there will be evaluations and accommodations for those who are unable to be vaccinated for medical exemptions.