A lot of manufacturers say they want to improve productivity.

Fewer are willing to put a proper number on what that improvement is worth.

That’s usually where the conversation gets stuck. People talk about waste, downtime, scrap, and “the need for a better way of working”, and everybody nods along. Then the budget question comes up and the room gets a bit quieter. Fair enough. It’s one thing to agree Lean sounds sensible. It’s another thing entirely to justify spending money on it when there are machines to keep running, orders to hit, and fires to put out.

That’s why the business case matters.

Not as a sales exercise. Not as a bit of paperwork to keep finance happy. But because if you can’t connect Lean training to real operational pain, it will always feel like a nice idea rather than a sensible investment.

And to be honest, in a lot of manufacturing businesses, there is plenty of pain to connect it to.

Why Lean training has to earn its place

In established manufacturing firms, training is often treated as overhead. Necessary, maybe. Useful, occasionally. But not always urgent.

That’s understandable. If you’re running a business with 40 to 200 employees, there’s always something competing for budget. New equipment. Repairs. Recruitment. Software. Compliance. The list never really ends.

But Lean training isn’t just another course. When it’s done properly, it helps people solve the problems that are already costing money every single week. Recent manufacturing training guidance says the ROI case should be built around measurable benefits such as productivity, reduced downtime, faster onboarding and better use of labour and equipment. That’s the right way to think about it.

If the training helps a team reduce scrap, shorten changeovers, improve flow or stop firefighting, then it is not a cost in the usual sense. It is a way of buying back capacity.

That’s the real point.

You are not paying for a certificate. You are paying to improve how the business performs.

And if you frame it that way, the conversation changes.

What your Lean Green Belt offer actually costs

Our Lean Green Belt training is priced at £4,200 for up to 12 people, which brings the cost down to £350 per person.

That matters, because it gives directors something concrete to work with. The fee is no longer vague or awkward. It becomes a real investment with a clear unit cost, and that makes the ROI discussion much easier.

It also compares well with broader UK market pricing. Recent Green Belt courses have been listed at £2,450, £2,530, and an average of £2,860/person for face-to-face delivery in a 2025 UK survey. Our offer sits in a useful place because it is team based, on site, and built for manufacturers rather than generic classroom learners.

That last part matters more than people sometimes admit.

If a company sends one person away for training, the knowledge often stays with that person. If you train up to 12 people together in their own environment, the chance of practical follow through is much higher. The team hears the same language. They see the same problems. They can apply the tools to the same process. That improves the odds of actual change, which is really what the board wants anyway.

The cost of doing nothing

Before you talk about ROI, it helps to talk about the cost of standing still.

Manufacturing waste is rarely dramatic in the moment. That’s why it gets missed. It doesn’t arrive in one big ugly invoice. It leaks out through scrap, rework, machine stoppages, overtime, rushed orders, poor changeovers and too much time spent chasing the same issues again and again.

Downtime is a good example. Modern manufacturing sources keep pointing out that the true cost of downtime is often much higher than the lost production itself, because the full picture includes idle labour, restart scrap, emergency parts, overtime, logistics disruption and sometimes customer penalties. One 2024 industry white paper reported average downtime costs for manufacturers at £193 million annually across surveyed organisations, which is obviously not a number most SMEs will recognise directly, but it does show the scale of the issue.

Scrap is similar. The cost is not just the value of the material thrown away. It also includes the labour already spent, the machine time lost, the energy consumed, and the capacity that could have gone into saleable output. If you only count material, you undercount. Usually by quite a bit.

That is why Lean training is easier to justify than people think. Not because it is cheap. Because waste is expensive.

How to build the business case

A sensible Lean business case starts with one question.

What is waste costing us now?

That might sound obvious, but many companies skip this step. They buy training because it feels like the right thing to do, then struggle to prove the result. Better to start with the pain and work backwards.

Here’s a practical way to do it.

1. Identify the biggest cost leaks

Look at the recurring problems that show up in operations meetings. The usual suspects are:

• Scrap and rework.
• Unplanned downtime.
• Changeovers that take too long.
• Excess overtime.
• Late orders caused by poor flow.
• Material shortages and expediting.
• Low output from bottlenecks.

You do not need perfect data to begin. You just need enough to make a conservative estimate. In fact, conservative is better. Directors trust numbers that feel a bit underplayed more than numbers that sound like consultant fantasy.

2. Put a value on each problem

This is where most business cases get stronger. Once you move from “we’ve got issues” to “this issue costs us this much per month”, the discussion becomes real.

For downtime, use a simple calculation based on the cost of lost production per hour. Then add the hidden costs if you can: labour standing idle, overtime needed later, restart scrap, and any customer impact.

For scrap, multiply the quantity of scrap by the full unit cost, not just the material cost. Include labour, energy, and machine time where possible.

For overtime, calculate how much of it is caused by waste rather than genuine demand spikes.

For changeovers, estimate lost productive time per week or month and translate that into value.

You do not have to be exact to be credible. You just have to be honest.

3. Compare savings to training cost

Once you know the annual cost of the problem, compare it with the investment in Lean Green Belt training.

In TCMUK’s case, that investment is £4,200 for up to 12 people.

So the question becomes simple. If the training reduces waste by enough to recover £4,200, how quickly does it pay back?

The answer, in most established manufacturers, is usually “faster than people expect”.

A very small reduction in recurring scrap or downtime can pay the fee back. If the team then keeps improving after the training, the value compounds. That is where Lean stops being a course and starts becoming a capability.

A simple ROI formula

You can keep the maths straightforward.

Use this formula:

If the training costs £4,200 and the annual benefit is £18,000, the net benefit is £13,800. The ROI is therefore 328.6 percent.

That is the kind of number that gets attention.

But ROI is not the only measure that matters. Payback period matters too. If the £4,200 is recovered in three months, that feels much easier to approve than a programme that takes two years to justify. Directors tend to like payback because it speaks their language.

And yes, some benefits are harder to pin down. Better morale. Less firefighting. More confident supervisors. Fewer repeated mistakes. Those things matter, even if they do not always appear neatly in finance reports. I think the best business cases mention them briefly but still keep the headline firmly on hard savings.

A worked example

Let’s say a manufacturer with around 80 employees is losing money in a few obvious ways.

• Scrap and rework cost £600 a week.
• Downtime and minor stoppages cost £700 a week.
• Overtime caused by inefficiency costs £350 a week.

That gives a weekly waste cost of £1,650.

Over a year, that is £85,800.

Now let’s be cautious. Suppose Lean Green Belt training helps the team remove only 20 percent of that waste in the first year. That would be a saving of £17,160.

Against a training cost of £4,200, the net benefit is £12,960.

Using the ROI formula, that gives an ROI of 308.6 percent.

And that is with a fairly modest improvement assumption.

You could make the case even stronger if the training also improves changeover time, planning stability, or first pass yield. But even without stretching the numbers, the investment looks sensible.

That is the useful bit.

Not that the course magically transforms everything overnight. It usually doesn’t. But if it helps a team remove a small slice of recurring waste, the financial case becomes hard to ignore.

Why team-based training improves the return

One of the more overlooked advantages of your offer is that it trains up to 12 people together.

That is not just a pricing detail. It changes the economics.

When one person goes on a course, the business gets one person’s perspective. When a cross functional group goes through the training together, the business gets shared language, shared problem solving, and a much better chance of action afterwards. That is especially useful in manufacturing, where problems usually live across boundaries rather than inside one role.

A planner sees one version of the issue. A supervisor sees another. Maintenance sees another. Quality sees another. Lean training works better when those people can look at the same process and actually agree on what is happening.

There’s also a practical benefit here that people often forget. On site training means the examples are your examples. Not a made-up case study about a coffee shop or a bank or some other place that looks nothing like a production line. The learning lands faster when it happens in the real environment, with real problems in front of real people.

That is where the ROI begins to feel believable.

What directors really want to know

When you’re speaking to directors, they usually want four things.

• Will this save money?
• How quickly?
• How much disruption will it cause?
• Will the changes last?

Everything in the blog should quietly answer those questions.

The money question is handled by the scrap, downtime and overtime calculations. The speed question is handled by payback and ROI. The disruption question is handled by the on-site, team-based format. The sustainability question is handled by the fact that people are being trained together in the actual environment where the improvements need to stick.

That is why a good business case is not just numerical. It is credible. It feels grounded. It sounds like someone who understands manufacturing wrote it, not someone who copied a template from a training brochure.

How to present it internally

If the budget needs internal approval, the best approach is usually simple.

Start with the current cost of waste.

Then show the training investment.

Then show a conservative savings target.

Then show payback.

That’s it. No drama. No jargon overload.

You can also make the case stronger by linking the training to a live business challenge. Maybe scrap is too high on one product family. Maybe a key line keeps losing time on changeovers. Maybe supervisors need a better way to solve recurring problems. When the training is attached to a visible pain point, it stops looking optional.

And that matters because nobody really wants to approve training in the abstract. They want to approve a solution to a problem they can already feel.

Why Lean training is worth the spend

Lean training is easiest to justify when people stop thinking of it as a standalone event.

It is not the workshop itself that creates value.

It is what the workshop helps your people do next.

Better problem solving. Better use of data. Better flow. Less waste. Faster response. More confident managers. Fewer days spent firefighting the same issues over and over again.

That’s the real return.

A recent UK manufacturing case study from A.N. Wallis showed the kind of results that can come from structured continuous improvement work, including a 12 percent increase in OEE, a 30 percent reduction in changeover time, and over £100,000 of obsolete stock removed. That is not a promise of what every team will achieve, of course. But it does show what becomes possible when Lean thinking moves from theory into daily practice.

And that is really the goal here.

Not a training course that sits politely on a shelf.

A better run business.

Closing thought

If you are a manufacturing director looking at £4,200 for up to 12 people, the right question is not whether the spend is real. It is. The better question is whether the business can afford to keep absorbing the hidden cost of waste instead.

Once you look at scrap, downtime, overtime and lost capacity properly, the training fee starts to look modest. Maybe even conservative. Especially when the team is trained together on site and the learning can be applied straight away.

That is the business case in plain English.

Not perfection. Not theory. Just a practical investment in the people who are closest to the problems and best placed to solve them. Please do check out our Lean Coaching, Green Belt and Lean Awareness training.