Utilisation rate and chair occupancy
Updated on 2026-08-22
This report exists because a hair salon has two kinds of fullness, and mixing them up steers you in the wrong direction.
Rapporten → Bezettingsgraad (Reports → Utilisation rate).
The two figures
With us, a colour treatment is two blocks: an actief (active) block in which the staff member works, followed by an inwerkblok (processing block) in which the colour develops. During that processing block the chair is occupied but the staff member is free — another customer can go in there.
| Figure | Calculation | What for |
|---|---|---|
| Bezettingsgraad (utilisation rate) | active minutes ÷ available minutes | the steering figure: how full your staff member really is |
| Stoelbezetting (chair occupancy) | (active + processing time) ÷ available minutes | how full your chairs are |
Chair occupancy may go above 100 %. That is not an error, but precisely the information you want to get out of it: double booking is happening, and the processing time is being used.
If processing time counted towards the utilisation rate, a salon that does a lot of colouring would automatically look fuller than a salon that does a lot of cutting. You would then stop double booking exactly when it pays off.
The table
| Column | Meaning |
|---|---|
| Week | ISO week number, for example Week 32 2026 |
| Medewerker (staff member) | |
| Beschikbaar (available) | from the schedule; otherwise from the time clock |
| Geboekt actief (booked active) | blocks in which the staff member actually works |
| Inwerktijd (processing time) | waiting blocks: the chair is occupied, the staff member is not |
| Bezettingsgraad | active minutes divided by available minutes |
| Stoelbezetting | active + processing time; may go above 100 % |
| Bron (source) | Uurrooster (schedule), Prikklok (time clock) or Onbekend (unknown) |
If there is neither a schedule nor a time clock record, the utilisation rate stays empty — not 0 % and not 100 %. A percentage without a denominator is a lie that looks like a figure.
Cancelled and no-show
- A cancelled appointment gives its time back and does not count.
- A no-show does count. That time is genuinely lost, and that is what you want to see.
Frequently asked questions
Why does the Bron column say "Prikklok"? For that staff member there was no work schedule that week, so it falls back on what was punched. Fill in the work schedule for a more reliable figure.
Where do I see this week's utilisation in a single number? On the Overzicht (overview), tile Bezetting deze week (utilisation this week).