Four-Day Work Week Stats 2026: 92% Kept It | Stealth Agents

Start HiringFree consultation · No commitment

Research/Remote Work Statistics<br>Four Day Work Week Statistics 2026: What the Data Actually Shows<br>June 6, 202610 min read

92% of UK pilot companies kept the four-day week

71% burnout reduction in UK trial

40% productivity gain at Microsoft Japan

22% of US employers now offer four-day option

90% of companies in 2025 Nature study continued the model

Key Takeaways<br>92% of companies in the UK's 2022 six-month pilot kept the four-day week after the trial ended; 57% made it permanent immediately (Boston College / 4 Day Week Global 2023)<br>Employee burnout dropped 71% and staff turnover fell 57% in the UK trial, with direct cost implications for replacement hiring (Boston College 2023)<br>22% of US employers now offer a four-day workweek option, up from 14% in 2022, according to the APA's 2024 Work in America Survey<br>Microsoft Japan recorded a 40% productivity gain and 23% reduction in electricity costs during its 2019 four-day week experiment<br>A July 2025 study in Nature Human Behaviour covering 2,896 employees across 141 companies in six countries found 90% of companies continued the model after the trial

By 2026, the four day work week statistics are no longer theoretical. Government trials in Iceland, the UK, Spain, and Japan have produced published results. The 2025 Nature study covered 141 companies across six countries. The American Psychological Association tracked US employer adoption from 2022 to 2024. There's enough data now to go beyond pilot enthusiasm and look at what actually changes when companies cut the week to four days.

What follows is a summary of the most credible figures, where they come from, and what they don't tell you.

Four day work week statistics: key figures at a glance

Statistic<br>Value<br>Source

UK pilot companies that kept four-day week post-trial<br>92%<br>Boston College / 4 Day Week Global 2023

Companies making it permanent immediately<br>57%<br>4 Day Week Global 2023

Revenue stable or rising during UK trial<br>95% of firms<br>Boston College 2023

Average UK pilot revenue change<br>+1.4%<br>Boston College 2023

Burnout reduction<br>-71%<br>Boston College 2023

Staff turnover reduction<br>-57%<br>Boston College 2023

Absenteeism reduction<br>-39%<br>Boston College 2023

Microsoft Japan productivity gain<br>+40%<br>Microsoft Japan 2019

US employers offering four-day option (2024)<br>22%<br>APA Work in America 2024

US workers who believe they could match output in four days<br>81%<br>APA Work in America 2024

Companies continuing in 2025 Nature cross-country study<br>90%<br>Nature Human Behaviour 2025

The UK pilot (2022): where most of the published data comes from

The UK's 2022 six-month trial is the largest controlled four-day work week study published in English. 4 Day Week Global, Autonomy, and Boston College coordinated 61 companies with roughly 2,900 employees from June through December 2022.

Company outcomes

Outcome<br>Result<br>Source

Companies continuing four-day week post-trial<br>92%<br>Boston College / 4 Day Week Global 2023

Companies making it permanent immediately<br>57%<br>4 Day Week Global 2023

Revenue stable or rising during trial<br>95% of firms<br>Boston College 2023

Average revenue change<br>+1.4%<br>Boston College 2023

92% is a high continuation rate for any voluntary experiment. Companies had a clear exit option and almost none took it. The revenue data addresses the main employer objection, that shorter hours force a productivity trade-off, and across 61 companies the answer was mostly that it doesn't.

Employee outcomes

Metric<br>Change<br>Source

Burnout reduction<br>-71%<br>Boston College 2023

Staff turnover<br>-57%<br>Boston College 2023

Absenteeism<br>-39%<br>Boston College 2023

Mental health improvement (self-reported)<br>54% of employees<br>Boston College 2023

Physical health improvement (self-reported)<br>46% of employees<br>Boston College 2023

Improved sleep reported<br>40% of employees<br>Boston College 2023

A 57% turnover reduction has a direct dollar value. Replacing a mid-level employee typically costs 50-150% of annual salary. When turnover drops by more than half, those savings are material.

For context on how burnout patterns connect to remote work arrangements, the remote work burnout statistics article covers the mechanisms and what the data shows about recovery rates.

The 2025 Nature study: six countries, 141 companies

A July 2025 study published in Nature Human Behaviour by Boston College researchers covered 2,896 employees across 141 companies in six countries over a six-month period. This is the largest multi-national four-day work week trial with peer-reviewed results to date.

Metric<br>Finding<br>Source

Companies that continued after the trial<br>90%<br>Nature Human Behaviour 2025

Job satisfaction improvement<br>+0.52 points on 0-10 scale<br>Nature Human Behaviour 2025

Burnout reduction<br>-0.44 points on 1-5 scale<br>Nature Human Behaviour 2025

Mental health improvement<br>+0.39 points<br>Nature Human Behaviour 2025

Physical health improvement<br>+0.28 points<br>Nature Human...