2.5 Organisational Culture and Its Three Levels

Key Takeaways

  • Culture is an established system of accepted behaviours, values, beliefs and assumptions widely shared within the organisation
  • Edgar Schein argues culture can only be understood with both an internal and an external perspective
  • Level one of culture is visible artefacts and products, such as office layout and furnishings
  • Level two is norms and values, most often noticed when they are violated
  • Level three is basic assumptions, which are seldom articulated but underpin the norms and values
Last updated: September 2026

The culture of an organisation plays a large part in whether change succeeds. CM3 gives a working definition, a warning about how culture is diagnosed, and a three-level model — all three are examinable.

The definition

Culture is "an established system of accepted behaviours, values, beliefs and assumptions that is widely shared within the organization".

Note established and widely shared. A preference held by one department for six weeks is not culture.

Culture is not mood

CM3 uses a weather analogy that is worth internalising. Today's mood is like today's weather — "it's freezing today" — and it is changeable. Culture is like the long-term climate trend. The two are easily confused, and change managers who read a bad week in one team as evidence of a cultural problem will design the wrong intervention entirely.

The practical test is duration and breadth. A dip in mood after a difficult announcement is normal and self-correcting. A consistent pattern across teams and over time is cultural.

Schein: culture needs two perspectives

Edgar Schein makes a simple but important point that the exam tests directly: it takes two perspectives to see an organisational culture for what it really is.

  • The internal perspective, from people who know what is really happening — they can see the unwritten rules, the workarounds and what actually gets rewarded
  • The external perspective, from people who can compare this organisation to others — they can see what is distinctive rather than simply normal

Neither alone is sufficient. Insiders are blind to what is distinctive because it is simply how things are. Outsiders see the distinctiveness but misread its meaning and function. The exam formulation is that culture can only be understood with both an internal and an external view — not by internal resources alone, not by an external consultant alone, and not by senior management alone.

That last exclusion matters practically. Senior leaders are often the worst-placed people to describe their own culture, because what they experience — access, information, deference — is systematically different from what everyone else experiences.

The three levels of culture

Culture operates at three depths, from visible surface to invisible foundation.

LevelNameWhat it isExample
One (surface)Visible artefacts and productsWhat you can see and countOffice layout and furnishings — notably who gets what
Two (deeper)Norms and valuesThe shared, accepted sense of what is right or wrong; may be in a code of conduct or enforced by informal social controlWhether it is acceptable to challenge a senior colleague in a meeting
Three (deepest)Basic assumptionsSeldom articulated but underpinning the norms and valuesThe assumption that all people are equal

Level one: artefacts

The visible layer — buildings, layout, dress, logos, the technology people are issued, whether there is a reserved parking space. Artefacts are easy to observe and easy to misinterpret, because the same artefact can mean opposite things in different organisations.

Level two: norms and values

Norms are the shared and accepted sense in an organisation of what is right or wrong. They may be written down in a code of conduct, or maintained informally through social control. The exam-relevant characteristic is that norms and values are most often noticed when they are violated — nobody articulates the norm about who speaks first in a meeting until someone breaks it and the room goes quiet. That is why new joiners and outsiders are such useful informants about level two.

Level three: basic assumptions

The deepest level. Basic assumptions are seldom articulated but underpin many of the norms and values. They are taken for granted to the point of invisibility — the assumption that all people are equal, that the customer is essentially rational, that individual effort produces individual reward.

Basic assumptions are where change most often founders, because a change that contradicts one is not experienced as a policy disagreement. It is experienced as wrong.

Working with the three levels

The practical mistake is intervening only at level one, because level one is visible and easy to change. Reconfiguring an office to open-plan is a level-one intervention; if the level-three assumption is that seniority earns privacy and privacy signals status, the artefact change will be resisted, subverted or reversed.

A useful sequence for a change manager is to work down when diagnosing and up when intervening. Diagnose by starting with artefacts, asking what norms they imply, and then asking what assumption would have to be true for those norms to make sense. Intervene by addressing the assumption through leadership behaviour and narrative first, then letting norms and artefacts follow — because artefact changes that contradict live assumptions simply generate cynicism.

This is also why leadership behaviour matters so much to culture, a point CM3 develops later through Carolyn Taylor's three mechanisms and the way local leaders send non-verbal signals about beliefs, values and assumptions.

Test Your Knowledge

A board commissions an external consultancy to produce a definitive account of the organisation's culture, working entirely from interviews with the executive team. What does Schein's view suggest is wrong with this method?

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Test Your Knowledge

A new employee is surprised when a colleague publicly contradicts a director in a meeting and nobody reacts. Which level of organisational culture has the new employee just observed?

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Test Your Knowledge

Which example best illustrates level one of organisational culture?

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