Air Canada flight attendants were ordered back to work after a strike on Saturday grounded hundreds of flights and stranded passengers nationwide. The Canadian Industrial Relations Board extended the expired contract until a new deal is reached, but the flight attendants’ union, CUPE, told members to defy the order, accusing the government of siding with the airline, according to BBC.

Jobs Minister Patty Hajdu imposed binding arbitration, saying stability and supply chains must be protected. Air Canada said flights will gradually resume from Monday but warned it may take up to 10 days to return to normal.

The dispute centers on pay. The airline offered a 38 percent raise over four years, while CUPE argues the deal falls below inflation and still leaves attendants unpaid for time on the ground. The union denounced the government’s move as a violation of workers’ rights, BBC reported.