Unconscious Bias in the Workplace: Understanding the Hidden Influences Behind Our Decisions

 

Unconscious bias in the workplace influences how we make decisions, communicate, give feedback, and recognise talent. While most people want to believe they judge others objectively, the reality is that everyone relies on mental shortcuts that can influence their perceptions and decisions.

We all like to believe that we make fair, rational decisions based on facts and evidence. We want to think that we judge people on their skills, behaviours, and achievements rather than assumptions or personal preferences. Every day, we process huge amounts of information, make decisions quickly, and rely on mental shortcuts to help us navigate the world around us. These shortcuts are useful, but they can also influence the way we see and work with other people. Some of these influences are hidden and known as unconscious biases.

Unconscious bias in the workplace can affect how we recruit, communicate, give feedback, recognise performance, and make decisions about people’s opportunities. While unconscious bias is not usually intentional, it can still influence workplace experiences and outcomes. The important question is not whether we have biases. We all do. The more useful question is: How aware are we of them, and what systems and behaviours can we put in place to make better decisions?

What is unconscious bias?

Unlike conscious bias, where someone deliberately holds a particular belief or preference, unconscious bias happens automatically. Unconscious bias refers to assumptions, associations, or preferences that affect our thoughts, decisions, and behaviours without conscious intention. They are sometimes also called implicit biases. Importantly, having unconscious biases does not mean someone is deliberately unfair or prejudiced. It means that, like everyone else, we are influenced by our experiences, culture, environment, and the information we have absorbed throughout our lives.

Unconscious bias develops through our experiences, upbringing, culture, education, and the environments we spend time in. Everyone has unconscious biases. They are a normal part of how the human brain works.

 

“Our unconscious thinking is responsible for the vast majority of the routine decisions we make. So clearly, engaging our conscious, reflective system is going to be a challenge.”

 

 

Why does unconscious bias happen?

Unconscious biases exist because of the way your brain processes information. From a cognitive perspective, it requires less mental effort to rely on existing patterns and assumptions than it does to carefully analyse every situation from scratch. Your brain will always look for the most efficient way to process the enormous amount of (often complex) information that it receives. It naturally creates mental shortcuts that help us recognise patterns, make decisions quickly, and respond to situations without having to consciously and objectively analyse every detail.

These shortcuts are an essential part of how we function. Without them, even simple decisions would require a huge amount of time and mental effort. However, the same shortcuts that help us navigate everyday life can also influence how we perceive and evaluate other people. Sometimes, they can lead us to make assumptions that are inaccurate or incomplete.

 

We tend to focus on information that we have to hand, and this can limit our ability to find new kinds of solutions. Expedience Bias pushes us to make quick decisions and avoid too much deliberation. Above all it prevents us from spending time on finding out what we don’t know.

 

For example, we may feel more comfortable with someone because they share similar experiences or backgrounds to our own. We may assume that a confident person is more capable, or interpret the same behaviour differently depending on who displays it. We may also pay more attention to information that supports what we already believe while overlooking evidence that challenges our assumptions.

These reactions usually happen automatically and are not a reflection of our intentions or values. The challenge is developing the awareness to recognise when our assumptions may be influencing our judgement. By slowing down our thinking, questioning our first impressions, and actively seeking different perspectives, we can make more thoughtful and inclusive decisions.

Here’s a video explaining that a little bit more:

 

The impact of unconscious bias in the workplace

Unconscious bias influences many aspects of working life, from recruitment and promotion decisions to everyday communication and teamwork. Because these biases often operate without conscious awareness, they can be difficult to recognise. However, their impact can accumulate over time, affecting who receives opportunities, whose ideas are heard, and how people experience the workplace.

Hiring and career opportunities

One of the most significant impacts of unconscious bias is that it can lead to less fair decisions around hiring, career development, and promotion. For example, a manager may unconsciously favour someone who shares similar experiences, interests, or communication styles (affinity bias), or they may associate confidence and visibility with competence (halo effect). While these decisions are rarely intentional, they can result in organisations overlooking talented people who bring different perspectives and strengths.

Lack of diverse thinking

Unconscious bias can also reduce diversity of thought within teams. When people naturally gravitate towards those who are similar to themselves, teams may become less varied in their experiences and approaches to problem-solving. A key indicator of this is groupthink, where teams are less likely to challenge assumptions, explore alternatives, or identify creative solutions.

Innovation and problem-solving

When teams rely too heavily on familiar ideas, experiences, or ways of working, they may miss opportunities to innovate. Inclusive teams benefit from different perspectives because people are more likely to identify risks, challenge assumptions, and suggest alternative solutions.

Psychological safety

The effects of unconscious bias are also closely connected to psychological safety. When employees feel that certain voices are valued more than others, they may become less willing to share ideas, ask questions, admit mistakes, or challenge existing ways of working. A team where people do not feel heard or respected will find it harder to collaborate effectively and learn from different perspectives.

Feedback and evaluation

Unconscious bias can also influence feedback conversations. Managers may unintentionally interpret the same behaviour differently depending on who displays it. For example, confidence in one person may be viewed as leadership potential, while similar behaviour from another person may be perceived negatively. These patterns can affect performance evaluations, development opportunities, and employees’ confidence in their own abilities.

Employee engagement

Ultimately, unconscious bias can affect employee engagement, trust, and belonging. When people believe that decisions are influenced by assumptions rather than evidence, they may feel less valued and less connected to the organisation. Recognising unconscious bias does not mean assuming people have bad intentions; it means understanding how human decision-making works and creating processes and behaviours that help everyone contribute fairly.

 

We quite naturally warm to people who are similar to us. The Similarity Bias can be harmless in everyday life, but in recruitment it can have more serious consequences. I saw this for myself several years ago; I was interviewing with a colleague and when one of the candidates left the room I turned to my colleague and said, “I really like that candidate”. My colleague replied, “Of course you do, she’s just like you!”. I suddenly realised that if my colleague hadn’t been there, I would never have noticed this bias and how it was affecting my decision-making.

How can leaders reduce unconscious bias?

The goal is not to eliminate bias completely. That is unrealistic. Instead, the focus should be on developing awareness, questioning assumptions, and creating workplace environments where different perspectives are welcomed and valued. The goal is to become more aware of the assumptions we make and create habits and systems that help us make fairer decisions. Reducing unconscious bias requires awareness, reflection, and practical action.

Inclusive workplaces are built when leaders look beyond traditional expectations, recognise individual strengths, and create environments where people are judged on their abilities and contributions rather than assumptions about who they are.

1. Slow down important decisions

Bias often has more influence when decisions are made quickly. The questions below do not remove bias completely. Instead, they create a moment of reflection where leaders can slow down their thinking, challenge assumptions, and make more balanced decisions.Before making an important judgement, ask:

• What evidence am I using to support this decision?
• Am I applying the same standards to everyone?
• Am I responding this way because it’s familiar to me?
• Am I judging the behaviour, or my interpretation of the behaviour?
• Would I make the same decision if this person had a different background?
• Whose perspective am I missing?

2. Create structured decision-making processes

Clear processes help reduce the influence of unconscious bias.

Examples:

• Use consistent interview questions.
• Define evaluation criteria before reviewing candidates.
• Use objective measures during performance reviews.
• Include different perspectives in important decisions.

3. Develop self-awareness

Interpersonal skills begin with understanding ourselves. Small moments of reflection can improve the quality of workplace relationships. When you notice a strong reaction to someone, ask:

• Why am I responding this way?
• Is this based on evidence or assumption?
• Am I judging this person differently from others?

When is unconscious bias training useful?

Our range of solutions on this topic are valuable for helping people understand how automatic assumptions may influence their workplace decisions, behaviours, and interactions. It can create awareness, encourage reflection, and give people a shared language for discussing inclusion and decision-making. However, training alone cannot remove unconscious bias. A single workshop will not suddenly eliminate years of learned experiences, assumptions, or social influences for any participant. The real value of unconscious bias training comes when it helps people become more aware of their thinking patterns and by providing practical strategies they can apply in their everyday work.

For example, training can help a manager recognise how affinity bias may influence who they naturally connect with, or how confirmation bias may affect the way they interpret an employee’s performance. This awareness creates an opportunity to pause, question assumptions, and make more evidence-based decisions.

Training is always most effective when it is part of a wider organisational approach but this is especially true for unconscious bias. If recruitment or evaluation processes remain inconsistent or support biased decision-making, leaders are not held accountable for inclusive behaviours, or employees do not feel safe speaking up, the impact of training will be limited.

Creating a more inclusive workplace requires a combination of awareness, supportive systems, effective leadership, and everyday behaviours. Unconscious bias training can be an important starting point, but lasting change happens when organisations turn awareness into action.

Why unconscious bias matters for leaders

Leaders influence the experiences and opportunities of the people around them.

By understanding unconscious bias, leaders can:

• make fairer decisions,
• improve recruitment and development processes,
• strengthen trust,
• encourage different perspectives,
• create more inclusive teams.

The most effective leaders recognise that good intentions are not always enough. Creating a fair workplace requires awareness, reflection, and consistent action.

Progress, changing expectations, and the importance of challenging assumptions

It is important to recognise that workplaces have changed significantly over time. For generations, many gender-based biases have existed around certain careers, skills, and behaviours.

This progress shows that many of the assumptions people once held about who could or could not succeed in certain careers were based on social expectations rather than ability. For example, women now represent a significant proportion of the science and engineering workforce in many countries. In the European Union, women accounted for around 40% of people working as scientists and engineers (in 2024), demonstrating how representation has increased in fields that were historically male-dominated.

However, progress does not mean that unconscious bias has disappeared. Even when organisations become more diverse, hidden assumptions continue to influence everyday experiences. A woman entering an engineering team, a man working in a traditionally female-dominated profession, or someone from a different cultural background joining an established team may still encounter assumptions about their skills, interests, or suitability for the role.

Key takeaways: Understanding unconscious bias in the workplace

• Unconscious bias is part of being human. Everyone develops automatic assumptions based on their experiences, background, culture, and environment. Our unconscious thinking is responsible for 99% of the routine decisions we make. So clearly, engaging our conscious, reflective system is going to be a challenge. The trick is not to fight against bias; it’s a natural product of our brains. Instead, seek to understand what could be biasing our decisions and then makes changes to the way we do things in order to mitigate the biases.
• The goal is not to eliminate bias completely, but to recognise and manage it. We cannot remove every automatic thought or assumption we have, but we can develop the awareness and habits needed to question our first impressions and make more balanced decisions.
• Unconscious bias can influence everyday workplace decisions. It can affect recruitment, performance feedback, promotions, communication, and whose ideas are heard and valued within teams.
• Inclusive workplaces are built through awareness and action. Leaders who recognise unconscious bias can create fairer processes, encourage different perspectives, and build environments where people feel respected and included.
• Understanding unconscious bias strengthens relationships and decision-making. When leaders and teams challenge assumptions and remain open to different perspectives, they create workplaces where people feel valued, trusted, and able to contribute their best work.

Ultimately, the important question is not whether bias exists. The important question is whether we are willing to recognise it, reflect on it, and take meaningful steps to reduce its impact.

We hope you enjoyed reading this post. If you would like to know more about our experience of working with clients in this area, feel free to contact us.