Yes. UBC’s Policy #64 (http://universitycounsel.ubc.ca/policies/policy64.pdf) states: “A Non-Striking Employee who intends not to cross a picket line during a labour dispute should inform his or her Department Head or Supervisor as soon as possible, normally w ithin 48 hours after a union provides strike notice to the University.”
Please note that if you do decide to not cross picket lines to report to work, you will not be paid.