eNPS

Why such a crude measure caught on

Full engagement surveys are more accurate, but they run once a year and the results arrive a month later. eNPS is cheap enough to repeat quarterly, and almost everyone answers a single question — which matters more than precise wording when the comparison you need is against yourself over time.

The number itself is badly overrated, though. Its absolute value depends on industry, country and even phrasing, so comparing your eNPS with someone else's is meaningless. Only the trend and the spread between units are useful.

How to calculate it, and how not to spoil it

eNPS mistakes are almost always organisational rather than arithmetic.

• Index = % promoters − % detractors; passives are excluded from the numerator but still count in the base.
• Anonymity is mandatory and has to be demonstrable: in a small department, a per-unit breakdown already identifies the author.
• Pair the score with one open question — "why" — without it the number does not suggest an action.
• Quarterly is the right cadence. More often and people stop answering; less often and you learn about a problem after the employee has left.

How it connects to the rest of the data

eNPS shows a state; the causes sit in operational data — turnover, absenteeism, share of overtime, schedule stability for that same unit. Verifix collects those by site and department, so a low eNPS at one branch can be checked against facts instead of discussed in generalities.

The reverse also helps: if turnover in a unit fell after a change to the schedule or the bonus scheme, the next eNPS reading usually confirms it — and it becomes clear which change did the work.