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the claim

A four-day work week reduces overall worker productivity.

the verdict
INSUFFICIENT LEANING
Recorded sources
0 sources for · 6 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that a four-day work week reduces overall worker productivity?

Unclear. Several sources indicate that four-day week arrangements are associated with maintained or increased productivity rather than reduced productivity, but these are mostly single-company surveys, early-adopter interviews, and general summaries rather than direct measurements of overall worker productivity. No placed item directly measures a decline in overall productivity.

Verdict: PARTIAL LEAN · 0 sources for, 6 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 6
Productivity and the four-day work week
2025
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Blackham, A. (2025). Productivity and the four-day work week. doi.org. https://doi.org/10.1177/1037969x251345189

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More against · 5
The Four-Day Work Week
1973
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Norman, V. (1973). The Four-Day Work Week. eric.ed.gov. https://eric.ed.gov/?id=EJ076101

The perceived effects of the four-day work week on employee health, well-being, and workability -
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The perceived effects of the four-day work week on employee health, well-being, and workability - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1093/eurpub/ckaf161.1965

The four-day workweek in Australia: insights from early adopters of the 100:80:100 model
2026
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Hopkins, J., Bardoel, E. A., & Djurkovic, N. (2026). The four-day workweek in Australia: insights from early adopters of the 100:80:100 model. doi.org. https://doi.org/10.1057/s41599-026-07536-x

Shaping Public Sector Transformation: The Promise of a Four-Day Working Week
2024
Get citation
Jodie, O. & William, S. (2024). Shaping Public Sector Transformation: The Promise of a Four-Day Working Week. zenodo.org. https://doi.org/10.5281/zenodo.14698945

Four-day workweek - Wikipedia
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Four-day workweek - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Four-day_workweek

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