What "fair" actually means in shared spaces

Most disputes in shared spaces come down to a single disagreement: was the work distributed fairly? The trouble is, "fair" has at least three meanings, and the people in the kitchen are usually each holding a different one.

  • Equal: everyone does the same number of tasks.
  • Equitable: everyone contributes the same amount of effort, accounting for difficulty.
  • Proportional: contribution matches capacity (someone working 60-hour weeks does less than someone with more time).

A useful fairness measurement has to take a position. The one that holds up best across households, cafés, and retreat centres is equitable — equal effort, not equal task count — with a flex for off-duty hours. That's the definition the rest of this guide uses.

How a fairness score works

A fairness score is a single number, typically 0–100, that summarises how evenly effort has been distributed across members of a space over a recent window (usually 4 weeks). 100 means perfectly even. Lower numbers mean the distribution has drifted.

Underneath, the calculation looks roughly like this:

  1. Every task has an effort weight (1–5).
  2. Every completed task adds its weight to the completing member's running total.
  3. The system compares each member's effort total against the average for the group, adjusted for off-duty hours.
  4. The closer everyone is to the adjusted average, the higher the score.

The result is a number that doesn't punish someone for being away or being on a quieter week — it adjusts for what they could reasonably have contributed.

Why effort weighting matters so much

Fairness scores that count tasks rather than effort produce nonsense. A person who does five 5-minute tasks ends up "ahead" of a person who did one 60-minute deep clean. Anyone living in the space knows that's wrong, and they stop trusting the score.

Effort weighting fixes this. Cleaning a bathroom is 4 or 5 effort points. Watering one plant is 1. Bins are 2. The grinder deep clean is 4. The number comes out reflecting reality, which is the only kind of number anyone trusts.

How to read your score

Roughly speaking:

  • 85–100: healthy. Don't fix what isn't broken.
  • 70–85: mild drift. Worth a glance, not a conversation.
  • 50–70: meaningful drift. Time for a check-in.
  • Below 50: structural imbalance. The rotation has broken or someone's quietly carrying the load.

The number is most useful as a trend, not a snapshot. A 78 that's been climbing for three weeks is healthy. A 78 that was 92 last month is a different story.

How to improve a score that's drifting

Don't add chores to whoever's behind. That's the obvious move and it almost never works. Better moves, in order:

  1. Check off-duty hours. Often the score is "off" because the system doesn't know one member's been away.
  2. Re-weight the tasks. The bathroom may have crept up to 6 effort points and you haven't updated the weight.
  3. Look at the rotation window. A 2-week window flatters short-term peaks. A 4-week window is usually more honest.
  4. Have a check-in. Not "you're doing less" — "the score's drifted, what's been happening?" Almost always there's a reason, and almost always it's fixable.

What a fairness score isn't

Worth saying clearly. A fairness score is not a performance review, not a moral judgement, not a leaderboard. It's a single signal — useful precisely because it's neutral. The moment it gets used as a stick, the system breaks. People stop completing tasks honestly, the rota gets gamed, and the number becomes meaningless.

The healthiest spaces use the score the way you'd use a thermometer. It tells you something. You decide what to do with the information.

See your space's score

Nudge computes a live fairness score for your space, weighted by effort and adjusted for off-duty hours. Free 7-day trial. The first weeks of data are usually the most interesting ones.