WestJet flight attendants walked off the job Sunday, the third straight summer of major airline labour disruption, before the airline and CUPE 8125 reached a tentative deal early the next morning. Two days later, employer groups are pushing Carney’s government to let the labour minister preemptively limit strikes in sectors such as airlines, railroads, and ports whenever the minister judges them a threat to the national public interest, Bloomberg reported Tuesday. Read: 72-hour WestJet strike clock triggers early flight cutsUnlike last year’s Air Canada flight attendants strike, Ottawa didn’t invoke Section 107 of the Canada Labour Code this time. When Ottawa invoked Section 107 within hours of the Air Canada strike starting last August, flight attendants defied the back-to-work order and stayed out until both sides reached a deal days later. The minister can already send a stalled dispute to binding arbitration, but only once bargaining collapses — employers want the power to step in before a strike or lockout even starts.