Cost reduction through cost drivers: cut the causes, not investments in development

Costs · 5 min read · 26.10.2026

On Friday afternoon the managing director sends an email: from the new quarter, ten percent off costs at every cost center, measures documented within five days. Three months later, the shop floor looks like this. Repair technician training cancelled, because it was easiest to cut. The gauge at final inspection is drifting, because "development" line items have been stopped. Scrap is up by a third, because the cheaper new material went through without supplier qualification. The savings have evaporated, replaced by costs that were not in the directive. The mistake was not the courage to cut. The cutting happened in the cost statement, not at its causes.

We know this scenario from dozens of manufacturing projects. The solution is not rhetoric about a culture of saving, but mechanics: find the causes of costs — cost drivers — measure them, and manage them. Two weeks. No new software.

A cost driver is not the cost, but the cause behind it

In manufacturing, costs arise in surprisingly few places, and across industries they look alike. But accounting sorts them by cost center and type — materials, wages, energy, services. The cause is nowhere to be seen. You won't find a changeover as a line item; you'll find the overtime it causes. Pallet moves don't show up at all, because the forklift is an overhead cost. A customer claim ends up under warranty repairs, and its cause gets lost.

Six places where costs actually arise — and what the statement shows:

• Changeovers. A press with 130 changeovers a month at 40 minutes each loses 87 hours of machine time. At €60 an hour, that is €5,200 a month. In the accounting, scattered between wages and depreciation.
• Overtime. The typical cause isn't "not enough people," but an unbalanced line or late materials. Two hundred hours a month at €18 an hour comes to over €43,000 a year. Paid for planning errors.
• Interoperational transport. A forklift shuttles semi-finished goods between halls twice a day, 45 minutes each way. Nearly 400 hours a year that add nothing to the product. Plus handling damage no one links to the transport.
• Energy. The compressor runs through the night because the network leaks. Measuring takes half a day — on most compressed air networks, leaks account for 15 to 25 percent of the air produced.
• Warranty claims. The cost shows in warranty repairs. What doesn't: missed deliveries, freight, the 8D team's work, and the customer's eroding trust. Usually a multiple of the repair cost itself.
• Procurement. Five percent off the unit price without supplier qualification comes back as scrap, sorting, and claims. Saving on the input and paying double in production — the most expensive saving we know.

Costs are not created in the statement, but on the shop floor — and only there can they be permanently reduced.

How to quantify cost drivers in two weeks

The first week belongs to the activity map. Walk the shop floor with the supervisors and ask three things: What are you doing while the machine runs? What are you carrying, and where? What are you waiting for? Write down every non-value-adding activity — changeover, transport, waiting, repair, repeated inspection. Nothing more. The result fits on two sheets of paper — not a study.

The second week belongs to the numbers. Assign each activity a cost quantity: the machine's hourly rate, the hourly wage with payroll contributions, the energy price, the cost per hour of overhaul. Excel on the shop floor is enough, and the columns are always the same. Activity and place — changeover of press L4, hall 2. Monthly quantity: 130 changeovers at 40 minutes each. Unit price: €60 per machine hour. Annual cost: €62,400. And at the end, the responsible supervisor with a proposed measure — SMED, for example, or combining batches.

From the list, select the top five by cost size. Every driver must have a number and a name. A number without a name is statistics; a name without a number is an opinion. These five lines will be management's working document for the whole year.

What to cut and what to protect

A blanket percentage cut is easy to order and expensive in consequence. In a cyclical decline, we recommend temporary measures instead: renegotiate supplier payment terms, stop agency workers, bring simple maintenance in-house, reduce finished goods inventory. These free up cash without undermining the company's ability to grow when the market turns.

Every budget line needs three questions:

1. Is it a cause of the cost? If yes, cut the cause, not a percentage of the budget. Cutting changeover time in half saves more than ten percent at the press-shop cost center — permanently.
2. Will it pay back within twelve months? Setter training, predictive maintenance, welding fixtures — investments in cost reduction. Cutting them means financing today's cutback out of future savings.
3. Are revenues falling structurally, not just cyclically? If a key customer has disappeared or a whole segment is walking away, a percentage cut will save neither costs nor company. Then restructuring with a turnaround plan — with numbers, not hope.

In these decisions, maintenance and development are a criterion, not an exception. Stopped preventive maintenance shows up as rising breakdown rates two to three quarters later. A company in crisis cannot afford machines standing still.

Cost reduction is a management process, not a campaign with an end date. Once a month, management and supervisors spend thirty minutes reviewing the top five drivers: is the number coming down, what has been done, what is lagging. A line that hasn't moved in three months means a wrong measure or the wrong owner — both can be changed. If you want to identify and quantify cost drivers faster than your in-house team can, see the overview of our services — from temporary measures to crisis management and restructuring. A percentage at a cost center can be ordered in a minute. Finding the cause takes longer — but you only have to find it once. After that, the cost simply keeps falling.

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Cutting 14% Downtime: How a Weaving Mill Handled Growing Demand Without Buying a New Machine

Changeover from 45 to 12 Minutes: How an Engineering Company Cut Costs Without Layoffs