Practical, evidence-led writing on the 4 day work week: what the trials show, how to design a pilot that holds up, and what to do when it gets difficult.
32, 36 or 40 Hours? Three Four-Day Weeks, Compared
A reduced 32-hour week, a gentler 36-hour week and a compressed 40-hour 4x10 are three different products. Benefits, risks, and how exempt and hourly overtime rules change the answer.
Three Reversals, One Pattern: Krystal, Safeguard Global and Alter Agents
Workload unchanged, intensity up, trust down — the shared failure pattern.
What a Major 2025 Study Added: Gains Track Real Hour Cuts
2,896 staff vs controls: burnout down, health up, larger cuts, larger gains.
The Latest UK Pilot: What 17 Firms Did Differently
All 17 continued in 2025 — twelve on four days, five on a nine-day fortnight.
Older Workers and Longer Lives: Time as Retention After 50
Shorter time as a labour-supply strategy for experienced staff.
Designing Your Day Off: Rest, Life Admin and Second Jobs
Protecting recovery without policing adults.
One Year On in the UK: Novelty Effect or Lasting Change?
54 of 61 firms still in a year later; 31 permanent.
Summer Fridays Are Not a Four-Day Week
Seasonal perks vs a contracted shorter week.
Councils and Public Services: Piloting Under Political Scrutiny
Recruitment savings, public evidence packs and political risk.
Equity Cuts: What Your Average Is Hiding
Break results down by role, caring status and contract type.
How to Read Revenue Claims in Four-Day Week Headlines
Denominators, windows and market noise.
Picking a Wellbeing Measure: WHO-5, Burnout Scales and Pulses
Validated short tools and when to survey.
Productivity Proxies That Don't Lie, by Function
Two or three honest measures per function — never twenty.
The Nine-Day Fortnight: Gentle On-Ramp or Permanent Compromise?
Half the dose: stepping stone or settlement?
New Joiners on a Four-Day Week: Onboarding Without Osmosis
Deliberate mentoring when the office is emptier.
How to End a Pilot Without Destroying Trust
Transparent criteria, transition plans and honest publishing.
Conditional Days Off: Should the Fifth Day Depend on Performance?
On-call and performance-contingent variants — benefits, costs, disclosure.
Myth: A Pay Cut Is Part of the Model
The researched model keeps pay; pro-rata cuts are a different product.
Myth: Clients Will Leave If You Close on Fridays
Service outcomes, not individual availability, retain clients.
Myth: Only Tech Companies Can Do This
Coverage sectors do it differently — not never.
Myth: You Can Just Delete Friday
Calendar deletion without workload redesign fails predictably.
Myth: Productivity Automatically Rises 40 Percent
Where the number came from and what to claim instead.
South Africa's First Pilot: Strong Results, Hard Questions
Revenue, resignations and absenteeism in the 2023 pilot, read carefully.
Sleep, Recovery and the Extra 38 Minutes a Week
Germany's sleep finding and why recovery mediates the gains.
Germany 2024: Stable Output, Better Sleep, Two Honest Exits
45 organisations, most continuing — and what the exits teach.
Portugal: The Pilot Where Process Change Predicted Survival
41 firms: firms changing two or more processes kept going; others drifted back.
Gothenburg's Lesson: When Shorter Hours Need More Staff
Better health and care at a staffing cost that must be funded honestly.
Enterprise Pilots: Handling the Two-Tier Workforce Problem
Pilot by unit without creating office and frontline castes.
Charities and Non-Profits: Mission Measures Belong on the Scorecard
Mission outcomes alongside internal metrics.
Agencies: Selling Outcomes When Clients Buy Days
From day-rates to deliverables without losing trust.
Law Firms and Billable Hours on a Four-Day Week
Re-basing utilisation and talking value with clients.
Manufacturing on Four Days: Crews, Maintenance Windows and Safety
Staggered crews, fifth-day maintenance and fatigue-aware metrics.
Does a Shorter Week Help Customers? The Evidence Nobody Quotes
Satisfaction held where measured — and why to measure it yourself.
The Environmental Case for Shorter Time — and Its Rebound Problem
Fewer commutes and office energy vs leisure travel and home use.
Gender, Care and the Fifth Day: Who Really Benefits?
Care gets easier; housework does not equalise by itself.
France at 35 Hours: Cousin, Cautionary Tale or Template?
What France's reference week does and does not show.
Belgium Legislated a Four-Day Week and Almost Nobody Used It — Why?
A compressed-week right with low uptake: a design lesson, not a verdict on shorter time.
Customer Floors: The Service Clause Every Pilot Needs
Response, resolution and satisfaction floors agreed before launch.
Counting Actual Hours: Catching Hidden Overtime Early
Timesheets, after-hours activity and the tripwires that protect the trial.
The Pilot Scorecard: 12 Numbers to Agree Before You Start
Outputs, quality, customer, people and finance — baselined in advance.
The Friday Problem: Guilt, Secret Working and Falling Behind
Hidden overtime, manager detection and honest pilot data.
Is It Just Working Harder? Asking About Intensity Honestly
Measuring intensity so a shorter week is not a faster treadmill.
Parents, Carers and the Childcare Maths of a Midweek Day Off
When a weekday off helps, and when long compressed days hurt.
What Staff Actually Do With Day Five
Rest, care, life admin and study — in staff's own reported patterns.
The CEO's Day Off Is a Policy Instrument
Visible modelling, boundary-setting and the collapse that follows when leaders cheat.
Remote, Hybrid and Four Days: Don't Change Two Variables at Once
Time reduction is not location flexibility — keep the pilot interpretable.
Small Firms: Why Organisations Under 50 Dominate the Success Stories
Speed and sponsorship vs coverage fragility.
Call Centres: Demand Curves Beat Calendar Preferences
Staff to demand by hour, not to preference alone.
Retail and Hospitality: Stagger the Day, Protect the Weekend Peak
Why Friday is often the wrong day off, and what to do instead.
Healthcare's Two Four-Day Weeks: Nurse Leaders vs the Ward Roster
Leadership schemes vs coverage rotas — two different interventions.
The Communication Plan: Staff, Clients and the Board
What to say, to whom, and in what order.
Pay, Leave and Benefits on 32 Hours: Contract Language That Works
Leave in hours, holidays on days off, bonuses, pensions and promotion fairness.
Part-Time Staff and the Four-Day Week: Fixing the Equity Gap
Pro-rata uplift, two-tier risks and fair design.
Overtime, Exempt and Non-Exempt: US Legal Traps in Plain English
FLSA, daily-overtime states, timekeeping and trial terms. General information, not legal advice.
Email and Chat Norms for a Four-Day Team
Async-first habits, response windows and out-of-office that routes somewhere useful.
Training Managers to Manage Outcomes, Not Hours
Goal-setting, prioritisation and spotting hidden overtime.
Workload Triage: Five Buckets Every Team Needs
Critical, customer, internal, deferrable, deletable — with owners.
How to Run a Six-Month Pilot That Ends in a Decision
Length, preparation, guardrails and pre-agreed decision rules.
The Recruitment Dividend: What Atom Bank Learned After Going Permanent
Applications up, departures down, customer goodwill rising — on a 34-hour week.
Why Retention Is the Strongest Business Case for a Shorter Week
Leavers, vacancies and agency spend: where shorter time pays first.
Sick Days, Resignations and Revenue: Reading the Pilot Charts Honestly
Big percentages on small bases — how to read pilot charts without fooling yourself.
Burnout Falls When Hours Really Fall
Falling hours, not a new label, drive the wellbeing gains.
What the US and Ireland Pilots Found: Revenue Up, Staff All-In
33 companies in 2022: revenue, ratings and the 97 percent who wanted to continue.
What the UK 2022 Trial Actually Found — in Plain Numbers
61 organisations, 2,900 staff: burnout, sick days, leaving and revenue, with the caveats attached.
Microsoft Japan's 40 Percent: The Most Misquoted Stat in Working Time
What happened in August 2019, what the number means, and why to handle it with care.
Covering Clients Five Days While Working Four
Staggering, shared queues and honest service promises.
Meeting Diets That Stick: Shorter Meetings Without Lost Decisions
Defaults, agendas and decision logs that survive contact with real diaries.
The Stop-Doing List: Where Pilots Succeed or Fail
Why deleting work — not deleting a day — is the active ingredient.
Readiness First: The 10-Point Audit Before You Announce Anything
Demand, measurement, waste, coverage and legal checks to complete before naming a date.
Perpetual Guardian: The 2018 Trial That Became Permanent
New Zealand's monitored trial: stress down, balance up, output maintained.
Iceland: From 2,500 Public Workers to a National Shorter-Hours Norm
What Iceland's 2015-19 public-sector trials did, found, and changed nationally.
Reduced vs Compressed: Why 4x10 Is Not the Same as 32 Hours
The distinction the whole evidence base turns on, and why compressed schedules show weaker health results.
What Is a 4-Day Work Week? The 100-80-100 Model, Explained
The core model — full pay, 80% time, full output commitment — and what it is not.