It’s being called a National Day of Action for Air Canada flight attendants.

CUPE says it will happen, Monday, at airports in Montreal, Toronto, Calgary and Vancouver.

According to the union, members are looking to gather in uniform to send a powerful message on key bargaining issues, such as wages and non-working hours, as the two sides head back to the table.

“We are inviting ALL members to stand in solidarity with your Bargaining Committee, while they bargain, as we continue to push for a fair deal at the table,” says CUPE on their website.

“With your support and your presence, we send a powerful message: Your participation is critical.

This is our time to stand up.

This is our time to stand strong.

This is our time to show our employer: NO MORE DIVERSIONS! FAIR CONTRACT NOW!”

More than 10,000 members overwhelmingly voted to strike, as early as August 16.