HR Advice Hub

What Is Unconscious Bias At Work?

Most people want to treat others fairly at work. However, our decisions are often influenced by assumptions, experiences and preferences that we may not even realise we have.

These automatic judgements can affect how we view people, make decisions and interact with colleagues. This is known as unconscious bias.

Unconscious bias can influence recruitment decisions, performance reviews, promotions, workplace relationships and everyday management decisions. While it is rarely intentional, it can affect workplace outcomes and employee experiences.

Understanding unconscious bias is an important step towards creating fairer, more consistent and more objective people practices.

What Is Unconscious Bias?

Unconscious bias refers to the automatic assumptions, preferences or judgements we make about people without consciously realising it. These biases are shaped by our experiences, upbringing, culture and environment. They help our brains process information quickly, but they can sometimes lead us to make decisions that are not entirely objective.

Having unconscious bias does not automatically mean someone is discriminatory or unfair. In fact, everyone has unconscious biases. The challenge is recognising that these biases can influence workplace decisions if appropriate checks and balances are not in place.

Why Is Unconscious Bias Important In The Workplace?

Unconscious bias can affect many aspects of working life. From recruitment and promotion decisions to performance reviews and day-to-day management conversations, unconscious bias can influence how opportunities are offered and how employees are perceived. When left unchecked, unconscious bias can:

• Affect hiring decisions

• Influence promotion opportunities

• Impact employee engagement and morale

• Reduce diversity of thought and experience

• Create perceptions of unfairness

• Lead to inconsistent management decisions

For employers, recognising unconscious bias is not about achieving perfection. It is about creating processes that support fair and evidence-based decision-making.

Common Types Of Unconscious Bias At Work

Affinity Bias: Affinity bias occurs when we naturally favour people who share similar characteristics, experiences or interests to our own.

For example, a manager may feel a stronger connection with someone who attended the same university, worked in a similar industry or has a similar personality.

While building rapport is important, workplace decisions should always be based on objective criteria rather than personal similarities.

Confirmation Bias: Confirmation bias occurs when we look for information that supports an opinion we have already formed.

For example, if a manager believes an employee is underperforming, they may pay more attention to mistakes while overlooking positive contributions.

Over time, this can create unfair perceptions of performance.

Halo Effect: The halo effect occurs when one positive characteristic influences our overall view of a person.

For example, an employee who is confident and communicates well may be viewed positively across all aspects of their role, even where development is needed in certain areas.

Horn Effect: The horn effect is the opposite of the halo effect.

A single mistake or negative characteristic can influence how someone's overall performance is viewed, potentially resulting in unfair assessments.

Recency Bias: Recency bias occurs when recent events have a greater influence on decision-making than longer-term evidence.

This can become particularly problematic during performance reviews if managers focus heavily on recent achievements or mistakes while overlooking performance throughout the rest of the year.

How Unconscious Bias Can Affect Recruitment

Recruitment is one of the areas where unconscious bias can have the greatest impact. Bias may influence:

• How job descriptions are written

• Which applications receive more attention

• How interviews are conducted

• How candidates are assessed

• Final hiring decisions

For example, a hiring manager may unconsciously favour candidates who share a similar background, communication style or career path.

This does not necessarily happen deliberately, but it can affect the objectivity of recruitment decisions. Many employers use structured interviews, standardised scoring systems and clearly defined selection criteria to help reduce the influence of unconscious bias during recruitment.

How Unconscious Bias Can Affect Employee Management

Unconscious bias does not stop once someone joins the business. It can also influence decisions relating to:

• Performance management

• Promotions

• Pay reviews

• Training and development opportunities

• Recognition and reward

• Workplace investigations

• Flexible working requests

Even small biases can accumulate over time and affect employee experience, confidence and career progression. This is why consistency and objective decision-making are so important for managers.

Can Unconscious Bias Lead To Discrimination?

Unconscious bias and unlawful discrimination are not the same thing. However, if workplace decisions are consistently influenced by bias, it can increase the risk of unfair treatment and potentially contribute to discrimination concerns.

For example, if particular groups of employees repeatedly receive fewer development opportunities or are overlooked during recruitment processes, employers may face questions about the fairness of their decision-making.

This is why it is important for managers to base decisions on evidence, documented criteria and objective business reasons rather than assumptions or personal preferences.

Signs Unconscious Bias May Be Affecting Your Workplace

Unconscious bias is often difficult to identify because it happens automatically. However, there may be indicators that suggest bias could be influencing workplace decisions. Examples include:

• Similar types of candidates are consistently hired

• The same employees regularly receive development opportunities

• Promotion decisions are difficult to explain objectively

• Performance ratings vary significantly between managers

• Employees raise concerns about fairness or consistency

• Particular groups appear underrepresented in senior positions

• Managers rely heavily on personal judgement rather than evidence

Identifying these patterns does not automatically mean bias is present, but they may indicate that processes should be reviewed.

Should Employers Provide Unconscious Bias Training?

Many organisations choose to provide unconscious bias training to managers and employees. Training can help individuals:

• Understand different types of bias

• Recognise how assumptions can influence decisions

• Reflect on their own decision-making

• Develop greater awareness of workplace behaviours

However, training alone is unlikely to eliminate unconscious bias. The most effective approach is often a combination of awareness, manager development and robust workplace processes. In other words, employers should focus not only on changing individual behaviour but also on creating systems that encourage fair and consistent decision-making.

How Businesses Can Reduce Unconscious Bias

It is impossible to eliminate unconscious bias completely. However, businesses can take practical steps to reduce its impact. These may include:

• Reviewing recruitment processes regularly

• Using structured interview questions

• Applying consistent scoring criteria

• Providing management training

• Reviewing job descriptions and job adverts

• Keeping clear records of decisions

• Using evidence-based performance management processes

• Encouraging different perspectives when making important decisions

• Reviewing policies and procedures regularly

The aim is not perfection. Instead, it is about creating processes that support fairness, consistency and transparency.

Why Reviewing Job Descriptions Matters

Many businesses create job descriptions once and rarely revisit them. However, outdated job descriptions can sometimes contain unnecessary requirements, unclear expectations or language that may unintentionally discourage certain applicants. Regularly reviewing job descriptions can help ensure they:

• Reflect the actual requirements of the role

• Use clear and inclusive language

• Avoid unnecessary barriers to entry

• Remain aligned with business needs

• Support a wider and more diverse talent pool

If you have not reviewed your job descriptions for several years, it may be worth checking whether the language, requirements and expectations still accurately reflect the role.

Need HR Support?

Fair and consistent decision-making does not happen by accident. It is usually the result of clear processes, capable managers and regularly reviewed people practices.

At BloomHR, we support businesses with recruitment, performance management, policies, manager guidance and wider HR processes that help create fair and consistent workplaces.

Whether you are reviewing job descriptions, strengthening your recruitment process or looking to support your managers, practical HR support can help reduce risk, improve consistency and create a better employee experience.. Contact us for more information.