Developing corporate culture: psychological safety, error culture, culture change

Because it determines what actually happens in a company, regardless of what is written in processes and instructions. Culture decides whether mistakes are reported or hidden, whether ideas come or fail to come, whether changes are carried or sat out, whether skilled workers stay or leave. Every Lean introduction, every change project and every digitalisation passes through the culture and is accelerated or slowed down by it. Companies with high psychological safety solve problems earlier, learn faster and keep their people longer. Culture is therefore not a soft topic but a driver of results that is simply hard to measure.

Through leadership behaviour, routines and examples, not through posters. First, leadership has to see honestly what the culture is like today, for example through conversations, observation and a short survey. Then it describes the target culture in concrete behaviour: what will we do differently in future when a mistake happens, when someone disagrees, when an idea comes up? Then managers visibly demonstrate this behaviour, change routines such as meetings and feedback, and create examples that people talk about. Culture change takes years, the first changes are visible after months, and it fails as soon as leadership itself does not play along.

Error culture describes how a company deals with mistakes: whether they are treated as blame to be punished, or as information to learn from. A good error culture does not mean that mistakes do not matter. It means that mistakes are reported quickly, analysed objectively and fixed at the cause, instead of a culprit being sought and the next mistake staying hidden. For Lean, it is the foundation: shop floor management, continuous improvement and A3 problem-solving require deviations to be made visible. Error culture is created by managers who respond to a reported mistake with thanks and the question about its cause.

Psychological safety is the belief shared within a team that you can ask questions, voice concerns, admit mistakes and propose ideas without being punished, exposed or excluded for it. The concept became known through the research of Amy Edmondson and is regarded as the strongest single factor for team performance. It is not harmony or conflict avoidance; in psychologically safe teams, people disagree more, not less. Managers create it by admitting uncertainty themselves, responding positively to questions and disagreement, and treating mistakes as learning cases. On the shop floor, it shows in whether deviations are entered on the board.

Feedback culture means that feedback is a matter of course in a company, in every direction: from manager to employee, the other way round, and among colleagues. Feedback is given regularly, not only in the annual review, it is concrete and related to behaviour, and it is understood as help, not as an attack. A feedback culture does not come about through appeals but through formats: short feedback rounds after projects, retrospectives, a fixed item in the employee review, managers who actively ask for feedback and visibly respond to it. It requires psychological safety, because without it, feedback upwards does not happen.

A growth mindset is the belief that abilities can be developed through effort, learning and feedback, in contrast to the fixed mindset, which regards abilities as innate and unchangeable. The concept comes from the research of Carol Dweck. It is relevant for companies because a growth mindset in leadership determines whether employees are developed or weeded out, whether mistakes count as a learning opportunity or as proof of incompetence, and whether change is experienced as an opportunity or a threat. On the shop floor, it shows in the question of whether a foreman believes his people can learn to solve problems themselves, or whether he keeps doing it himself.

By writing it from the bottom up and in terms of behaviour. A mission statement that senior management formulates with an agency and then rolls out remains a poster. A mission statement that is developed with employees from all levels, for example in a World Cafe, and that backs every value with two or three observable behaviours, stands a chance. Respect then becomes: we listen before we answer, and we raise criticism directly, not behind someone's back. After that, it has to be anchored in routines: in the job interview, in feedback, in the assessment of managers. And senior management has to demonstrate it visibly, otherwise it becomes a generator of cynicism.

The first visible changes in leadership behaviour and in routines are possible after three to six months. Until a new culture is taken for granted and holds up even without attention from the top, it usually takes two to three years. The duration depends less on the size of the company than on the consistency of leadership: a leadership circle that unanimously demonstrates what it demands changes culture quickly; one in which individuals tolerate the opposite never changes it. I recommend measuring with pulse checks after six and twelve months and anchoring culture work as a permanent task of the leadership circle, not as a project.