Every successful four-day week pilot has the same active ingredient, and it is not the calendar. It is the work that was removed before the calendar changed. Workload triage is how you find that work systematically instead of hoping each team will somehow cope in 80% of the time.
The five buckets
Begin with a full inventory of recurring work: meetings, reports, approvals, standing tasks, inboxes, projects and the quiet favours that never appear on a plan. Then sort every item into five buckets.
Critical covers safety, legal, regulatory and revenue-protecting work that must happen on time regardless of the rota. Customer work directly serves clients or users and is judged by them. Internal work keeps the organisation running — necessary, but its audience is colleagues, so its format, frequency and length are negotiable. Deferrable work matters but not weekly; it can move to a monthly or quarterly rhythm. Deletable work produces output nobody uses: the report no one opens, the approval that never changes a decision, the meeting whose outcome is another meeting.
In most knowledge teams the honest surprise is the size of the last two buckets. The target in a 100-80-100 pilot is to stop, reduce, automate or delegate roughly a fifth of current activity — not to perform the same list faster.
Give every bucket an owner and a date
Triage fails when it is a workshop rather than a set of decisions. Each bucket gets a named owner and a deadline. Critical and customer work gets a coverage plan: who does it on whose day off, through a shared queue or buddy rather than a personal inbox. Internal work gets a cheaper format — a written update instead of a meeting, a monthly pack instead of a weekly one. Deferrable work gets a date, written down, so postponement is a choice rather than quiet abandonment. Deletable work gets stopped visibly, with senior sign-off, so teams are not punished later for dropping something a leader still secretly wanted.
That senior sign-off matters. Staff will not delete work they believe management values, however often they are told to prioritise. Leaders have to retire their own rituals first: the Monday pack, the standing update, the report commissioned in 2019 and read by habit.
Protect the gain
Saved time has a way of being re-spent by new demand. Without a rule, every hour freed by triage fills with fresh requests and the day off is paid for by intensity. Decide in advance that triage savings belong to the shorter week. New work entering a team during the pilot must either displace existing work through the same five buckets or wait for the next planning cycle.
Watch for meeting migration too: four days crammed wall-to-wall leave no room for the focused work the triage was meant to protect. Pair triage with meeting defaults — shorter durations, agendas, decision logs, meeting-free focus blocks — and audit the calendar a month in. If focused work is leaking into evenings, your buckets are wrong, however tidy the spreadsheet looks.
A practical first session
Set aside half a day per team. List everything recurring. Challenge each item with three questions: who uses this, what decision does it change, and what happens if it stops for a month? Sort, assign owners, agree stop dates, and record the hours released. Then measure actual hours in the pilot’s first month against the plan. Triage is the cheapest part of a four-day week to do and the most expensive to skip.
Repeat the exercise at the pilot midpoint. Work creeps back: a deleted report is quietly revived, a new approval layer appears after one mistake, and a deferrable task becomes weekly by habit. A second pass through the five buckets, comparing actual hours against the plan, catches this drift while it is still small. Teams that treat triage as a monthly discipline rather than a launch event are the ones whose day off is still real in month five.
Sources
- Autonomy, University of Cambridge, Boston College and 4 Day Week Global, UK pilot results and qualitative findings, February 2023: https://www.sciencedaily.com/releases/2023/02/230221113132.htm
- Fast Company, 2023, on 4 Day Week Global preparation and process redesign: https://www.fastcompany.com/90932623/so-youve-decided-to-implement-a-4-day-workweek-now-what
Day5Group is a consultancy that assists in the transition to a 4 day work week. More about Day5Group · All blog articles