Diesel passed £2 a litre last week, and every large employer in the country responded within days. The bigger cost running through the same businesses was not mentioned, because nobody prices it, nobody publishes it, and nobody owns it. With budgets being set now and the Autumn Budget on 28 October, that is worth examining.
What happens when a cost is visible
UK average diesel started 2026 at around 140p a litre. On 2 October it crossed £2.00 for the first time, at 200.01p, passing the previous record of 199.22p set in July 2022. Official figures put the average at 199.52p in the week to 5 October. A 55-litre fill is now around £110, roughly £32 more than at the end of February.
The causes sit entirely outside any employer’s control: the conflict in the Middle East, reduced output from damaged refineries, Russian export restrictions following attacks on its fuel facilities, and a UK that imports the large majority of the diesel it uses. G7 countries and the International Energy Agency agreed an emergency release of 100 million barrels on 2 October. That is the scale of intervention required to move the price even slightly.
What interests me is not the fuel. It is the response.
Within weeks, boards reviewed budgets and pricing. Hauliers issued surcharge letters. Procurement went back to suppliers over fractions of a penny. Finance remodelled the year. Commercial teams worked out what could be passed on and what had to be absorbed. An organisation that takes months to agree a new policy can reprice an entire contract base inside a fortnight when a visible input cost moves.
That is what a priced cost does. It arrives with a number attached, from a third party, in writing, and it forces a decision.
Absence flows through the business in exactly the same way
Absence moves through an organisation along the same paths as fuel. It costs you directly through agency cover, overtime and lost output. It reaches you through your supply chain as late deliveries, missed service levels and quality problems that get attributed to something else. And it reaches you through your own management layer, where supervisors and line managers spend their week covering shifts rather than running the operation they are paid to run.
The difference is not the mechanism. The difference is visibility.
Nobody puts your absence rate on an illuminated sign at the roadside, to a tenth of a penny, where every employee and every competitor can see it. No supplier writes to tell you it has gone up. No invoice arrives. It is not top of the board agenda. It appears as a single-digit percentage in an HR pack, with no money attached and nobody presenting it.
So it does not feel like a cost. It feels like weather — a bit up and down, but generally normal, and fundamentally something that happens to you rather than something you decide about.
It is nothing of the sort.
The arithmetic nobody runs
Here is a comparison worth making, because in our experience it has never been made inside the organisations that most need it.
Take a multi-site employer of 16,000 people running at a 7% absence rate. The direct cost — headcount, average salary, reported rate — is around £28m a year. Add agency cover and the other direct costs of replacing those people and it reaches approximately £42m. Those are not our figures; they came out of that organisation’s own payroll and absence data, and were agreed by its own senior team without argument about methodology.
At that scale, one percentage point of absence is worth roughly £4m a year in direct cost alone.
Now set that against the fuel increase that triggered a board review, a repricing exercise and a round of supplier negotiations. For almost every large employer outside pure haulage, the absence number is the larger of the two. It is also the one that moved without anybody noticing, because there is no mechanism by which a change in it announces itself.
The pattern repeats. In a facilities management and outsourcing group, reported absence of roughly 6% represented some £26.8m of direct cost in a single division, while agency spend covering those same absences in that one division exceeded £40m. In a food manufacturer of 28,000 people, a reported rate of 4% proved to be nearer 6% once the hidden costs were counted.
Two things understate the figure every time. The reported rate understates the true rate, because what gets logged depends on the manager, the system and whether anyone chased it. And the direct cost understates the total cost, because overtime, agency cover, lost productivity and management time all sit outside it, usually in somebody else’s budget line.
That last point matters more than it sounds. Absence is budgeted for in most large organisations. It is simply budgeted under other names, by other people. Agency spend sits with operations. Overtime sits with site management. Days lost sits with HR. Three owners, three reports, no total, and therefore no decision.
The difference that should change the conversation
You cannot get the diesel back. It is burned. The price was set in a market you do not control by events thousands of miles away, and your only options were to absorb it or pass it on. Every hour your team spent on fuel this autumn was damage limitation.
Absence is the opposite.
You have already paid those people. The money has left the business. The capacity has not. It is still available to you, and recovering it requires no recruitment, no capital programme and no waiting.
The Keep Britain Working review, published in September, frames the national version of exactly this point: people already on the payroll, already paid for, not currently producing, representing one of the largest and most attainable growth opportunities available to the UK economy at £212 billion a year. The same logic applies to a single employer. It is the only cost of that scale on your books that owes you something back.
It is also tractable. A comparable multi-site employer reduced average days lost by 37% over six years, worth approximately £4m a year on a recurring basis. A large acute NHS trust delivered more than £1m of savings in six months through a targeted musculoskeletal absence programme, with 55% faster returns to work. Neither result came from a new wellbeing initiative. Both came from giving managers a clear process and giving leadership the visibility to hold them to it.
The timing argument is equally direct. Someone absent for four to six weeks has a 96% chance of returning to work. Once a person leaves work for health reasons, their chance of working again within a year falls to 3.8%, against 47% for someone who is simply unemployed. The cheapest intervention is always the earliest one, and the cost of deferral is not neutral.
This is a budget-round decision, not a wellbeing decision
Most large employers are setting next year’s budget right now. Fuel will be in it, line by line, argued to the penny. Headcount will be in it. Energy, insurance and supplier inflation will all be in it, each with an owner, a forecast and a challenge process.
Where is absence?
Not a percentage in an HR board pack. A number, with an owner, a target, and a plan to recover what you are already paying for — visible down to the pence, and broken out by division, by site, by team and by manager, because the aggregate figure hides where the problem actually is.
That last point is the one organisations resist, and it is the one that makes the difference. A headline rate sizes the prize. It cannot tell you where to start. Absence clusters — the same depot, the same shift, the same team under the same manager — and those clusters persist for years precisely because the average smooths them out of existence. They also rarely travel alone. Look at the same areas and you usually find lower productivity, worse customer satisfaction, patchy process compliance, higher turnover and concentrated agency and overtime spend. One problem, surfacing in four reports, owned by four people, none of whom is looking at the other three.
The Chancellor delivers the Autumn Budget on 28 October, and the Office for Budget Responsibility publishes its forecast the same day. Whatever is in it, it will land on your cost base as something to absorb or pass on, exactly as the fuel price did.
Absence is the one you can get ahead of.
Where to start
If you want to know what this is worth in your organisation, the first step is not a system or a programme. It is an honest assessment of three things: what your reported absence rate actually captures, what the full cost looks like once agency, overtime and management time are included, and whether anybody is currently accountable for the number as a budget line rather than a statistic.
Diesel is a cost you have to take. Your absence number is a cost, a budgeted saving, and one of the best opportunities on the board’s table.
If you want a significant, well-evidenced saving in next year’s budget, get in touch. Thirty minutes, and we will show you where the money is hiding.
