Yes. UBC’s Policy #64 (http://universitycounsel.ubc.ca/policies/policy64.pdf) states: “An individual who intends not to cross a picket line as a matter of conscience to meet classes or to fulfil other duties during a labour dispute shall inform the Head of the Department or the Supervisor, as the case may be, within thirty-six (36) hours after a strike is announced.”
Please note that if you do decide to not cross picket lines to report to work, you will not be paid.