Thursday, 7.40 a.m. Four assessors are in the room, the coffee is out, the documents are ready. One chair stays empty: the psychologist who was to run the individual interviews is ill. The message arrived at 6.52 a.m. by text.
What happens next is familiar to every assessment department: phone calls, cancellations, half a day of improvising. What almost nobody works out: what this one absence really costs.
The item everybody knows
The most visible cost is the staffing of the day. Four assessors, one coordinator, one room. If the day does not run as planned, part of that time is lost; not all of it, but the absence drags through every station.
Most organisations do that sum. It is uncomfortable but manageable. The problem is the other five items.
The item that arrives later
The candidates who do not get an individual interview that day need a new appointment. It is not next week but in three, four or six weeks, depending on how full your calendar is.
During that time something happens that no cost centre records: your best candidates keep applying elsewhere. Anyone waiting six weeks for feedback after an assessment day has often already accepted an offer, from somebody else. The drop-out rate rises with every week of waiting, and it rises most among those with the most choice.
Replacing a candidate who has dropped out is not an appointment. It is a new recruitment process.
The item nobody notices
Every unplanned absence creates coordination work. Not one hour, but many small steps spread over several days: asking about availability, looking for a stand-in, checking whether that person is qualified for this procedure at all. Informing candidates. Rebooking assessors. Booking a new room. Providing new documents. Keeping the department waiting.
That work is usually done by the person who knows the operation best, and who therefore does not do other things that day. It appears in no report because it is booked as “normal work”.
The item that hurts
A procedure that does not run as planned is a procedure with unequal conditions. If three candidates had their individual interview on the assessment day and four only five weeks later, with a different psychologist, in a different frame of mind, then the results are comparable only to a limited degree.
For the decision that is a quality problem. If anyone later challenges the selection, it is a documentation problem. Standardisation is not an end in itself: it is what allows you to justify your decision.
The item that stays
Candidates talk about their experiences. An assessment day that visibly goes off the rails leaves an impression that has nothing to do with your professional quality, and it lands on review platforms while you are still looking for replacement dates.
If you recruit internally, the same effect appears one floor down: the department whose vacancy is delayed by six weeks will have less confidence in the process next time.
Why the sum is so rarely done
Not out of carelessness, but because the figures sit in five different places: staffing costs in controlling, waiting times in the applicant tracking system, drop-outs nowhere, coordination effort in one person’s head, reputational damage not at all.
As long as that stays the case, a no-show is booked as bad luck. And nobody optimises bad luck.
What can be done about it
The most effective lever is not reacting but preventing:
Reminders that arrive. In our experience a large share of candidate no-shows comes not from disinterest but from forgetting. Automatic reminder chains, a week, 48 hours and two hours beforehand, with visibility of who actually received the message.
Appointments candidates choose themselves. Someone who picks a slot from genuinely free times turns up more reliably than someone who confirmed an allocated appointment.
Allow rebooking instead of forcing cancellation. If rebooking within a deadline is easy, candidates rebook instead of simply not turning up.
A stand-in who is already known when the absence is reported. Not searching but choosing: who is qualified for this procedure, has time that day and is not already scheduled elsewhere? That question can be answered in seconds if qualifications and availability sit in the system rather than in spreadsheets.
Warnings while there is still time. A supervision ratio breached three days before the date is a problem that can be solved. The same ratio on the morning of the assessment day is a crisis.
The uncomfortable question
If you need a figure for your own organisation, a simple exercise helps: take the last twelve months and count how often an appointment had to be moved unplanned. Then estimate the coordination time for one of those cases, honestly, with all the small steps. Multiply.
Most of the organisations we talk to arrive at a number that surprises them. Not because the individual cases are expensive, but because there are so many of them.
If you want to do this sum with your own figures: the effort calculator asks for procedures, volumes and hourly rates and works through the coordination effort.
