While Canada's labour relations authority has deemed their strike illegal, Air Canada's flight attendants are staying on the picket line, as their union fights for leverage in a contentious labour dispute with the major airline.

Among the major sticking points are wages and ground pay . The government used a once-obscure labour law to intervene, which some flight attendants say violates their right to strike.

With flights grounded and travel plans thrown into disarray for thousands of Canadians, many people have written to CBC News asking about the dispute — including clarification on recent interactions between the federal government, Air Canada and the Canadian Union of Public Employees. We've answered some of those questions here.

What happens to union leaders and workers who def

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