Announce a four-day week too early and you promise what you have not designed. Announce it too late and staff hear a rumour, clients hear it from someone else, and the board hears about it as a risk.
Communication is not wrapping around the pilot; it is one of the controls that decide whether the pilot is judged fairly. Firms in the UK 2022 pilot (61 organisations, around 2,900 staff) and the US and Ireland pilots (33 companies, 2022) that reported output holding and staff backing continuation shared one trait besides redesigned work: people knew what was changing, how success would be judged, and when the decision would be made.
Sequence matters: board, staff, clients
Board or owners first. They need the business case and guardrails, not the rallying speech: why now (retention, recruitment, service quality), which model, what will stop to make room, which floors must hold (customer response, quality, finance), full costs including part-time equity and cover, and the date they will decide on what evidence. Bring the exit into the room: “If floors breach for two consecutive periods after we have tried to fix it, we pause and report.” A board that has pre-agreed the failure condition will not panic in the first bad week.
Staff second — after the design is real, before anything leaks. Staff need 100-80-100 translated: pay, leave in hours, holidays on days off, part-time treatment, peak weeks, promotion — plus the honest sentence: “This is a trial: here is how we judge it, when we decide, and what happens if it does not work.” Iceland’s change endured because it was negotiated and extended through workforce agreements after the 2015–2019 trials; Perpetual Guardian’s 2018 trial carried staff because independent monitoring was visible.
Clients and key suppliers third. They need service facts: hours, who covers what on which day, escalation routes, and what will be measured and shared, with check-ins booked at months one and three. A client learning your pattern from an out-of-office reply will assume the worst.
What each audience is really asking
Staff ask: Is my pay safe, will my workload genuinely shrink, and are part-timers treated fairly? Answer in writing, including edge cases — holiday collisions, Friday childcare, the part-timer’s hourly rate.
Managers ask: Same outputs, fewer hours — and may I stop things? If your message is only “make it work,” they will intensify their teams and work their own day off. Give them the stop-doing list, an escalation route, and cover to defend the day off.
Clients ask: Will I still get served? Answer with outcomes: “Your contact works Monday to Thursday; the service operates Monday to Friday via a shared queue with a one-working-day standard; urgent issues use this route.” That is testable; “we are trialling a four-day week for wellbeing” is not.
The board asks: Can we reverse this without humiliation? Show the criteria, the interim dashboard, and drafts for each outcome — continue, extend, adjust, revert. Calm, pre-described reversibility makes approval possible.
Artefacts to prepare before you announce
- One-page staff trial terms: model, pay basis, leave in hours, holiday rule, part-time treatment, timekeeping, review date, reversion process.
- Manager brief: the 3–5 outputs defining “100%” per team, the stop-doing list, customer floors, day-off work rules, and what good modelling looks like.
- Client letter: service hours, coverage pattern, escalation route, measurement commitment, check-in dates — short enough to be read.
- Living FAQ seeded with the hard questions: pay, promotion, childcare, second jobs, peak periods. Update it weekly in month one; an FAQ of easy questions teaches staff not to trust it.
- Dashboard visible to staff: the board’s numbers — outputs, quality, customer response, actual hours, absence, wellbeing pulse.
During the pilot: rhythm beats volume
Hold a rhythm: weekly operational note, monthly results pulse, client check-ins at months one and three, and the decision date with criteria restated each time. Publish misses with hits — a week-six dip fixed by week nine builds more trust than a flawless narrative. And never let job ads or client proposals promise five days of availability from four-day staff; every “she’s always there when I need her” teaches the team nothing changed.
Actionable steps
- Brief the board first, with floors, costs and the pause condition minuted.
- Announce to staff only once trial terms exist — pay, leave in hours, holiday rule, part-time uplift, decision date.
- Send the client letter before the start date, with named coverage and month-one check-ins already booked.
- Publish FAQ and dashboard locations on day one, updated on a stated day each week.
- Schedule the decision meeting now and restate its date and criteria in the first staff briefing and every monthly pulse.
- Draft all four outcome letters — continue, extend, adjust, revert — before the pilot ends. Calm wording is hard to write under deadline pressure.
A four-day week asks people to change how they work daily. Sequenced, honest communication — board, staff, then clients, each hearing facts built for them — is what lets the organisation judge that effort fairly.
Sources
- Iceland trials 2015–2019 — Autonomy / Alda, July 2021: https://phys.org/news/2021-07-shorter-week-boost-productivity-burnout.html
- Perpetual Guardian, New Zealand, 2018: https://www.sciencealert.com/this-4-day-work-week-experiment-went-so-well-company-keeping-it-perpetual-guardian-engagement-balance
- UK 2022 pilot — Autonomy / Cambridge / Boston College, 21 February 2023: https://www.sciencedaily.com/releases/2023/02/230221113132.htm
- US and Ireland pilots 2022 — 4 Day Week Global, December 2022: https://www.internationalworkplace.com/community-zone/news/four-day-week-pioneering-pilot-program-a-huge-success-new-research-reveals
Day5Group is a consultancy that assists in the transition to a 4 day work week. More about Day5Group · All blog articles