Labour Minister Steven MacKinnon announces that he is sending the labour dispute between Canada Post and the Canadian Union of Postal Workers (CUPW) to the Canada Industrial Relations Board at a press conference in Ottawa on Friday, Dec. 13, 2024. (Patrick Doyle /The Canadian Press via AP)

Striking Canada Post employees listen on a speaker to the news that Federal Labour Minister Steven MacKinnon is asking the Canada Industrial Relations Board to send the 50,000 employees back to work, in Toronto on Friday, Dec. 13, 2024. (Frank Gunn /The Canadian Press via AP)

A striking Canada Post employee mans a picket line in Toronto after news that Federal Labour Minister Steven MacKinnon is asking the Canada Industrial Relations Board to send the 50,000 striking employees back to work, on Friday, Dec. 13, 2024. (Frank Gunn /The Canadian Press via AP)

Striking Canada Post employees in Toronto listen on a speaker to the news that Federal Labour Minister Steven MacKinnon is asking the Canada Industrial Relations Board to send the 50,000 employees back to work, on Friday, Dec. 13, 2024.(Frank Gunn /The Canadian Press via AP)

Labour Minister Steven MacKinnon announces that he is sending the labour dispute between Canada Post and the Canadian Union of Postal Workers (CUPW) to the Canada Industrial Relations Board at a press conference in Ottawa on Friday, Dec. 13, 2024. (Patrick Doyle /The Canadian Press via AP)

Striking Canada Post employees in Toronto listen on a speaker to the news that Federal Labour Minister Steven MacKinnon is asking the Canada Industrial Relations Board to send the 50,000 employees back to work, on Friday Dec. 13, 2024. (Frank Gunn /The Canadian Press via AP)