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A Danish register study spanning 25,000 workers across 7,000 workplaces in 11 AI-exposed occupations found widespread chatbot adoption and new AI-related tasks, but a difference-in-differences design ruled out earnings or hours effects larger than 2%, at either the worker or workplace level, two years after ChatGPT's launch no earnings or hours effect above 2%, two years after ChatGPT's launch

SourceNBER Working Paper 33777·revised Mar 2026

Verified 2026-08-31

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