Why common sense isn’t always so common

The next time the phrase “use your common sense” comes to mind, pause and ask whether the expectation has actually been made clear. In workplaces, clarity is not over-explaining; it is good leadership, writes Barbara Selmer Hansen.

“Just use your common sense” is a phrase we hear often, at home, in everyday situations, and very much in workplaces. It’s usually said with good intent, based on the belief that what feels logical or obvious to one person should naturally be obvious to everyone else.

But when expectations aren’t met, frustration quickly follows, along with the classic eye roll. Thereafter, behaviour is questioned, capability is doubted, and performance issues are often attributed to a lack of “common sense”.

From an HR perspective, this is where the problem begins.

The reality is that common sense isn’t actually instinctive or universal. What people describe as common sense is learned behaviour. It is shaped by upbringing, life experiences, education, culture, and previous workplaces. When those experiences differ, so do assumptions about what is obvious, appropriate, or expected.

This article looks at why common sense isn’t as common as we assume, and what workplaces can do about it. Understanding this distinction is critical before organisations label behaviour or design expectations around it. That shaping happens early, and it comes from more places than most people realise.

What we learn growing up shows up at work

From early childhood, people develop internal “rules” about how the world works. These rules come from observations, reinforcements, and consequences. Some people grow up in environments where curiosity, independence, and questioning are encouraged, while others learn that following instructions closely and waiting for direction is the safest and preferred option.

In the workplace, however, this can show up very differently. One employee may step in and take initiative, while another waits to be told what to do to avoid making mistakes. One behaviour might be praised as common sense, while the other is criticised. In reality, both reflect learned behaviours that have been expected in the past.

Different life experiences mean different assumptions

People rely on their own experiences as reference points when making decisions. In a work setting, what feels obvious to one person may not even register for another.

An employee who has worked in a fast-paced environment may instinctively anticipate issues and act quickly. However, someone from a more structured or regulated background may prioritise process and approval. When these approaches collide, misunderstanding can occur, and judgement often follows.

In these moments, “common sense” is simply familiarity with a certain type of environment, not a shared standard.

The same education doesn’t lead to the same thinking

While formal education provides knowledge and develops skills over time, it does not standardise behaviour or thinking styles.

Two people with the same qualifications may approach challenges differently depending on how they were taught to engage with authority, problem solve, and contribute. One may speak up and challenge assumptions, while another may prefer to listen, observe, and contribute selectively.

Assuming that education creates the same sense of common sense can lead to unfair conclusions about confidence or competence.

Habits from previous workplaces don’t magically disappear

Workplaces also condition behaviour over time. Employees learn what is rewarded, what is discouraged, and how things really get done, not just what policies say.

When people move into new organisations with different expectations, friction can arise. Behaviour that was once encouraged may suddenly be seen as inappropriate. Add to that the unwritten rules every workplace has, including how decisions are made, who needs to be consulted and how risk is viewed, and new employees are often left guessing.

When expectations rely on insider knowledge, mistakes and frustration are inevitable. What gets labelled as poor judgement is frequently just a lack of shared understanding.

Remote work removed the ambient cues that used to teach ‘common sense’

Much of what people call common sense was never taught directly; it was absorbed. Overhearing how a manager phrased a difficult email, watching a colleague double-check something before submitting it, noticing who got pulled into a meeting and why: these small moments used to transmit a workplace’s unwritten rules without anyone consciously teaching them.

In remote and hybrid settings, that incidental exposure largely disappears. New employees only see what’s explicitly documented or said aloud, so norms that used to be picked up by proximity now have to be written down, modelled on calls, or walked through deliberately. Organisations that haven’t made this shift often mistake the resulting gaps for poor judgement, when the real cause is a change in how people work, not who they hired.

Not everyone works or processes information the same way

Much of what we call common sense depends on interpreting ambiguity and reading unspoken cues. These skills are not universal, and people learn, process, and apply information in different ways.

Some people perform best with clarity and structure. When expectations are implied rather than stated, hesitation or errors can occur. This is rarely about capability; it’s more about how information is processed and applied.

We assume others see things the way we do

People naturally assume others interpret situations as they do. This creates a false sense of shared understanding.

What often sits beneath “just use your common sense” is assumed knowledge, knowledge built from personal experience and exposure. When that knowledge hasn’t been shared, gaps appear, and those gaps are often misinterpreted as effort or judgement issues.

‘Lack of common sense’ is often about unclear expectations

In many cases, behaviour described as lacking common sense is a response to uncertainty.

If employees are unclear about their responsibilities, authority, or when they are expected to act versus escalate, they are forced to interpret and guess. When pressure, workload, or fatigue are added, even highly capable people will miss things that seem obvious in hindsight.

Behaviour is often shaped more by environment than intent.

There is also a business cost. When expectations aren’t clear, organisations often pay for it through rework, inconsistency, avoidable conflict, safety risks, customer issues, and performance conversations that could have been prevented with clearer communication.

Different generations were taught different ways of working

People entering the workforce at different times were shaped by different norms around leadership, communication, and independence.

Some learned by observing and working things out on their own. Others entered workplaces with stronger expectations of clarity, feedback, and open communication. These differences directly influence what feels “normal” or logical at work.

Neither approach is right or wrong, but they don’t always align.

When you step back, a clear pattern emerges. What we call “common sense” is often the product of experience, exposure, and expectation. Relying on it as a measure of performance creates risk because, where expectations are assumed rather than stated, misunderstanding is inevitable.

In workplace settings, “common sense” is a poor substitute for clarity. It assumes shared understanding where there may be none.

The answer is not to lower standards, but to set and communicate expectations more clearly.

For employers and leaders, that means focusing on four practical behaviours:

• Set expectations clearly instead of relying on assumptions.

High-performing organisations do not rely on implicit understanding. They create alignment through clear expectations, consistent communication, and shared context. What feels obvious to a leader is usually the result of their own experience, not universal logic. Taking the time to spell it out supports better decisions and stronger performance, and matters especially for staff who need clear, contextual feedback rather than implied cues.

• Check that expectations were understood, not just stated.

Setting expectations clearly is only half the exchange; leaders often assume clarity was achieved because they were clear, without confirming what the other person actually took away. A quick “walk me through how you’ll approach this” or “what’s your read on what’s expected here” surfaces gaps before they turn into mistakes. This shifts the responsibility for alignment away from mind-reading, in either direction, and turns it into a shared check.

• Create a culture where questions are encouraged, not judged.

Saying “use your common sense” can discourage questions and create a sense of judgement or worry. Over time, employees may stop seeking clarification for fear of appearing incapable. This undermines psychological safety and increases the risk of mistakes.

What leaders say and how they say it matters, as it plays a big part in organisational culture.

• Balance clarity with accountability, not instead of it.

Avoiding assumptions does not mean lowering standards. Employees are still expected to think critically, take ownership, and apply judgement. Clarity doesn’t replace accountability; it strengthens it. When expectations are clear, people are better equipped to meet them.

Clarity also supports inclusion. When success does not depend on insider knowledge or past exposure, more people have the opportunity to contribute fully and perform at their best.

So the next time the phrase “use your common sense” comes to mind, pause and ask whether the expectation has actually been made clear. In workplaces, clarity is not over-explaining; it is good leadership.

Barbara Selmer Hansen is the director of Impact Business Consulting.

Want to see more stories from trusted news sources?
Make HR Leader a preferred news source on Google.