HR Advice Hub

What Is Gross Misconduct?

UK Employer Guide

Gross misconduct is one of those terms employers often hear, but aren’t always completely clear on.

Knowing what it means (and how to handle it properly) is essential to managing serious workplace issues fairly and confidently.

Dealing with it early and fairly is key to maintaining a productive and positive workplace.

In this guide, we’ll walk through what poor performance looks like, how to manage it informally, and when you may need to move to a more formal process.

What Is Gross Misconduct?

Gross misconduct refers to behaviour so serious that it fundamentally breaks the trust and confidence between an employer and employee.

Because of its severity, it can justify summary dismissal, which means ending employment without notice.

However, it’s important to remember that you still need to follow a fair process before making any decision.

Examples Of Gross Misconduct

Gross misconduct will depend on the circumstances, but common examples include:

• Theft or fraud

• Physical violence or threats of violence

• Serious insubordination

• Deliberate damage to company property

• Serious breaches of health and safety

• Discrimination, harassment, or bullying

• Being under the influence of drugs or alcohol at work

• Serious breaches of confidentiality

Not every situation is clear-cut, so it’s always important to consider the specific facts.

What Is The Difference Between Misconduct And Gross Misconduct?

Understanding this distinction is key.

• Misconduct is less serious and might include things like lateness, minor breaches of policy, or poor behaviour

• Gross misconduct is much more serious and may justify dismissal without notice

In many cases, misconduct becomes gross misconduct due to:

• severity

• impact

• repetition

• risk to others or the business

Do You Need To Carry Out An Investigation?

Yes - even in serious situations.

Before making any decisions, employers should:

• establish the facts

• gather evidence

• speak to relevant individuals

• remain objective

An investigation helps ensure that any outcome is fair and reasonable.

Do You Still Need A Disciplinary Process?

Yes.

Even if the situation appears to be clear gross misconduct, you should still follow a fair disciplinary process.

This typically includes:

• inviting the employee to a formal meeting

• explaining the allegations

• giving them the opportunity to respond

• considering all the evidence before making a decision

Skipping this step can create significant risk for employers.

When making a decision, employers are not expected to prove misconduct beyond reasonable doubt. Instead, decisions should be based on a reasonable belief, formed after carrying out a fair investigation and considering all available evidence.

This is a common area of confusion, and taking the right approach helps ensure decisions are fair and defensible.

Can You Dismiss An Employee Immediately?

In cases of suspected gross misconduct, you may consider suspension while the matter is investigated.

Suspension:

• should be on full pay

• should be kept as short as possible

• is not a disciplinary outcome

Dismissal should only be considered after a fair process has been followed.

Why Having A Clear Policy Matters

Having a clear disciplinary policy in place is essential when dealing with gross misconduct.

Your policy should:

• Set out what may be considered misconduct and gross misconduct

• Explain the process that will be followed

• Help ensure consistency across the business

Without a policy, there is a higher risk of:

• inconsistent decision-making

• unclear expectations

• unfair outcomes

In more serious cases, this can increase the risk of employment claims.

A well-written policy gives both employers and employees clarity, and provides a framework for handling situations fairly and confidently.

Common Mistakes Employers Make

Handling gross misconduct can be high pressure, and common mistakes include:

• Acting too quickly without investigating

• Assuming guilt before hearing the employee’s response

• Skipping steps in the disciplinary process

• Not following or having a clear policy

• Treating similar cases inconsistently

• Not keeping clear records

Taking a calm, structured approach (and following your policy) will always put you in a stronger position.

Need HR Support?

Gross misconduct is serious, but it still needs to be handled carefully and fairly.

Getting it wrong can create significant risk for businesses, particularly if a fair process hasn’t been followed. Taking the time to investigate properly, follow your policy, and make balanced decisions is essential.

If you’re unsure how to approach a situation, or need support with policies or guiding managers through complex cases, BloomHR can help. Contact us for more information.