A vacant role doesn't cost nothing while it sits open. It costs whatever that role would have produced, plus whatever gets quietly absorbed by everyone covering for it. On a role paying around £80,000, that burn rate works out to roughly £1,500 a week. The average UK time to hire runs close to five weeks. Do that maths on a role you've been meaning to fill, and the real cost gets uncomfortable fast.
Where the number comes from
Vacancy cost is lost output, plus overtime or cover costs, plus the knock-on effect of a gap sitting upstream of everyone else's work. At roughly £1,500 a week for an £80,000 role, and around 4.9 weeks as the UK's average time to hire, a perfectly normal hiring process can already cost over £7,000 in burn before a single agency invoice or interview cost is added.
Why founders sit on the decision anyway
It's rarely about budget. It's about certainty, waiting for the right candidate, delaying the role brief, letting the gap stay informally covered by someone already stretched thin. That cost compounds quietly because, unlike a salary, it never shows up as a line item on its own, a quieter version of the same mistake we've broken down before when a hire goes wrong entirely.
Fixing the real bottleneck
Separate finding the right person from deciding to start looking, the same distinction worth making before you even open a role. Set a deadline for finalising the role brief itself, not just for reviewing candidates once they arrive. And where the gap is already costing you, consider a faster-to-deploy option to stop the bleed while a permanent search runs in parallel, rather than treating it as one or the other. Our breakdown of what a recruitment agency's fee buys you is a useful next read if that faster option is an agency.
FAQ
How much can an unfilled vacancy cost per week?
Roughly £1,500 a week in lost output for a role paying around £80,000, before accounting for costs like overtime cover.
What's the average time to hire in the UK?
Around 4.9 weeks, though this varies by role and sector.
Why do founders delay hiring decisions even when a role is costing them?
Usually uncertainty rather than budget, waiting for the right candidate or the right moment rather than treating the vacancy itself as an active, ongoing cost.
What's a practical way to reduce vacancy cost?
Set a decision deadline for finalising the role brief, and consider a faster-to-deploy option to cover the gap while a permanent search runs.
Does a longer search always mean a better hire?
Not automatically. A longer vacancy has its own cost, and an extended search doesn't guarantee a better outcome than a well-structured, faster process.
Sources
The No Compromise Newsletter
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