The union representing about 4,400 WestJet flight attendants issued a 72-hour strike notice to the airline on July 30 [1].

The dispute threatens to disrupt travel across Canada's major aviation hubs during the peak summer season. Because flight attendants are essential for aircraft operation, a walkout would likely lead to widespread cancellations at hubs like Toronto Pearson Airport and Calgary [2].

CUPE Local 8125 serves as the representative for the flight crew [1]. The union said the move follows a labor dispute centered on unpaid work and other key bargaining issues [3]. A spokesperson for CUPE Local 8125 said the two sides are "still too far apart on some key issues" [4].

WestJet responded to the strike notice by issuing a lockout notice of its own [1]. This maneuver allows the company to legally prevent employees from working during a labor dispute. Despite the tension, a WestJet spokesperson said the company has not cancelled flights or started winding down operations and sees progress in talks [5].

Travelers have already expressed concern regarding the stability of their itineraries. Some passengers at Toronto's Pearson airport reported uncertainty about whether they would reach their destinations as planned [6].

A union representative said that passengers who face disruptions must find their own way to their destinations. The representative said it will be WestJet's responsibility to get those passengers to their destination within 48 hours of the original booking [7].

The 72-hour window creates a strict deadline for both parties to reach a collective agreement before a total work stoppage occurs [1].

The union representing about 4,400 WestJet flight attendants issued a 72-hour strike notice.

The exchange of strike and lockout notices indicates a breakdown in negotiations during a high-leverage period for the airline. By issuing a lockout notice, WestJet attempts to maintain control over the timing of a shutdown, while the union uses the strike notice to pressure the company on compensation for unpaid labor. The outcome depends on whether the 'progress' cited by the airline can be converted into a signed contract before the 72-hour window expires.