Air Canada flight attendants could walk off the job as early as Thursday after negotiations with the carrier broke down over the weekend. Two-thirds of employees voted on Sunday to reject Air Canada’s latest contract offer. It was the second time workers failed to support the deal that had been negotiated by the Canadian Union of Public Employees, having already done so in August. The workers and Air Canada seemingly remain far apart on issues such as wages, pensions, crew rest, working conditions and work rules. Federal Labour Minister Lisa Raitt has already indicated the government would force striking employees back to work in the event of a strike.