How Toyota made excellence repeatable

In 1982 General Motors closed its assembly plant in Fremont, California. It had a reputation as one of the worst in the company: poor quality, high absenteeism and constant conflict between managers and workers.

Two years later it reopened as NUMMI, a joint venture between GM and Toyota. Toyota ran the plant, and much of the old workforce was hired back, union leaders included. Within a couple of years, the same people were building cars with quality close to Toyota's own plants in Japan.

Nothing about the workers had changed. The system around them had.

Same people. Different system. Different results.

GM spent years trying to carry that lesson into its other plants, with limited success. The tools it could see, like the cord that stops the line, were easy to copy. The way of running a business behind them was not. Four ideas sit at the heart of it. Each is useful on its own. Together, they make excellence repeatable.

Shikumi: build the mechanism

Shikumi means the mechanism: how something is built to work. Toyota's story starts with one. In the 1920s Sakichi Toyoda built an automatic loom that stopped itself the moment a thread broke, so one person could look after many machines and a fault could never quietly ruin a whole roll of cloth.

The same idea runs through the factory. Any worker can pull a cord to stop the line when something is wrong. Every job has a standard way of doing it, written down and visible. Problems are designed to show up immediately, where they happen, instead of surfacing weeks later as complaints.

A good mechanism makes the right way the easy, normal way, whoever is on shift. Taiichi Ohno, the engineer who shaped the Toyota Production System, put the dependency plainly: where there is no standard, there can be no improvement.

Kaizen: improve it a little, every day

Kaizen means change for the better. At Toyota it describes a habit more than a programme: everyone, every day, looking for small ways to make the work safer, easier and better, then writing the better way into the standard.

Problems are treated as information, not as failures to hide. When something goes wrong the question is not who, but why, asked again and again until the cause in the process is found. Ohno's famous "five whys" is that discipline made into a routine.

Each improvement is small, but they never stop, and they are kept. Today's improvement becomes tomorrow's standard, which becomes the starting point for the next one. That ratchet is what turns effort into progress that lasts.

Hoshin kanri: point everyone the same way

Thousands of daily improvements can still pull in different directions. Hoshin kanri, usually translated as policy deployment, is how the direction is set and shared. It took shape in Japanese companies in the 1960s, and Toyota is among its best-known users.

Leaders choose a few breakthrough objectives for the year. Each level of the organisation then works out what it must do to deliver its part, and the plans are passed back and forth, a practice called catchball, until every team owns targets it believes in and can see how they connect to the whole. Progress is reviewed regularly, and the plan changes when reality disagrees with it.

The result is alignment without micromanagement. People improve their own work, and their improvements add up to the company's goals.

Hitozukuri: make people

Hitozukuri means making people. A saying often repeated at Toyota is that before it builds cars, it builds people. When the company wrote its principles down in The Toyota Way 2001, it named two pillars: continuous improvement and respect for people.

Respect here is practical. It means trusting the person closest to the work to spot problems and improve the process, and giving them the skills to do it. Managers are expected to teach. Team leaders are developed on purpose. A problem is a chance for someone to learn, not only something to fix.

This is what makes the other three ideas last. A mechanism is only as good as the people who run it, and improvement only continues while people keep growing.

Why it only works as a whole

The four ideas form a loop. Hoshin kanri tells people what matters. Shikumi makes the work standard and makes problems visible. Kaizen improves the work every day. Hitozukuri grows the people who do the improving, and capable people build better mechanisms.

Take one away and the loop breaks. Standards without improvement go stale. Improvement without direction scatters. Targets without capable people turn into pressure. And tools without the culture behind them, as GM found, change very little.

Better systems, better people, better results, better lessons. Then round again.

What this looks like in a Kenyan business

You don't need a car plant to use any of this. In a business of fifteen people in Nairobi, the same four ideas look like this:

• A mechanism. The five tasks that matter most each have a one-page procedure, an owner and a review date. A simple board shows today's work and anything that is stuck.
• A habit of improvement. Fifteen minutes each week where the team names one problem, asks why until the cause is clear, and agrees one change.
• A direction. Three goals for the year, turned into targets each team helped set and can see every month.
• A way of growing people. Team leads trained to teach the procedures and run the weekly review, so capability no longer lives only with the owner.

None of it is expensive, and all of it compounds. That is what we mean by success by design, and it is the work we do: processes, people and continuous improvement, built to fit your business.