WPPB

David Folkenflik

Updated at 1:12 p.m. ET

Organizers of a newsroom union at the Chicago Tribune have informed its publisher that colleagues have given such overwhelming formal support for their effort that the paper's parent company should recognize the guild voluntarily and start to negotiate a contract.

The organizers gave the Tribune's parent company, Tronc, a day to make a decision.

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One of the nation's oldest and most prestigious regional newspapers, The Chicago Tribune, could soon have a unionized staff. On Wednesday morning, journalists from its newsroom informed management that they are preparing to organize and that they have collected signatures from dozens of colleagues.

This is a historic move at a paper that, for decades, had taken a hard-line stance against unions.

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