Really depends in which province you are and which job you have.

https://www.mondaq.com/canada/employment-and-workforce-wellbeing/1025848/mandatory-vaccinations-in-the-workplace

"Based on the relevant case law, to have a chance of withstanding scrutiny, a mandatory vaccination policy must establish a tangible connection between the vaccination and a reduced risk of COVID-19 transmission. It is important to note that what is acceptable for one workplace may not work for another – a mandatory vaccination policy for a workplace that's employees are working remotely is not going to fly, but one in an essential service may."