"BC Hydro is currently evaluating its policies and procedures for public meetings," the Crown corporation said in a statement. "The postponement of the job fairs will give us time to complete this task."
"Our intent is to ensure the safety of our staff and members of the public."
The postponed job fairs had been scheduled for Tumbler Ridge, Fort St. John and Chetwynd on July 28, 29 and 30, respectively.
Earlier this week, the BC Coroners Service identified James Daniel McIntyre, 48, as the man killed by RCMP.
Accounts affiliated with the online activist group Anonymous claimed McIntyre was a "fallen comrade," and some vowed to avenge his death.
A Site C protest planned for Thursday in front of BC Hydro headquarters in downtown Vancouver has also been cancelled, due to concerns about violence.