Four-Day Workweek Salary Impact 2027 Calculator
4-day workweek 2027 model variants: (1) 32hrs/4 days SAME pay (UK 2022 trial, Iceland successful) — productivity unchanged. (2) Reduced pay 80% (less common). (3) Compressed 4×10 days (same hours, fewer days). Calculator compares cash + hourly rate.
Iceland Trial 2015-2019
2,500 employees (1.3% of workforce). 32-35hr week, same pay. Result: 86% productivity unchanged or improved. Most workers continued post-trial.
UK 2022 Trial
61 companies, 6 months. 92% continued. Revenue unchanged. Employee burnout down 71%. Recommended permanent adoption.
Models
Same-pay reduced-hours: most popular, requires productivity gain. Compressed (4×10): same total hours, fewer days. Reduced-pay: rare in office, common in retail.
Source and Disclaimer
Iceland Institute for Sustainability, 4dayweek.com 2022 UK pilot results, ALDA-CESA Iceland report.
Source: 4dayweek.com, ALDA-CESA Iceland. Last updated: May 2026.