Verbal Warning at Work 2026: Procedure, Template & ACAS

Verbal warnings are a common feature of workplace discipline in the UK. They are typically used by employers as the first formal step when an employee’s conduct or performance falls below the expected standard but does not warrant more serious disciplinary action.

Although the phrase “verbal warning” suggests a simple conversation between a manager and employee, in practice a formal verbal warning is still part of a structured workplace disciplinary procedure. Employers must ensure that any warning issued is fair, reasonable and consistent with the organisation’s disciplinary procedure and the standards set out in the ACAS Code of Practice on Disciplinary and Grievance Procedures.

Failing to follow a fair process will not usually create a standalone tribunal claim at the warning stage, but it can undermine an employer’s position if the issue later escalates and contributes to dismissal or other significant sanctions. In those cases, tribunal scrutiny will focus on overall fairness under UK employment law, including whether the employer acted reasonably in the circumstances and followed a fair process.

For managers and HR professionals, understanding how verbal warnings work in employment law is important. A poorly handled warning can weaken later disciplinary decisions, while a properly issued warning can form part of a defensible, progressive disciplinary approach supported by appropriate records and clear expectations.

This guide explains what a verbal warning is, when it can be used, how the verbal warning procedure should work under UK employment law, how long warnings typically remain active and what employers should include when documenting a verbal warning.

What this article is about

This article provides a detailed overview of verbal warnings at work in the UK, including the legal meaning of a verbal warning, the role of verbal warnings within disciplinary procedures, ACAS expectations on issuing warnings, how long verbal warnings normally last and what employers should include in a verbal warning letter or template. It should be read alongside the employer’s employment contract documentation and any internal policies or staff handbook rules that apply.

Section A: What Is a Verbal Warning?

A verbal warning is a disciplinary sanction issued by an employer when an employee’s conduct or performance does not meet the required standard. It is typically used as the first formal stage in a workplace disciplinary procedure and is intended to alert the employee that improvements are required.

Although the warning itself may be communicated verbally during a disciplinary meeting, it is normally recorded in writing and retained on the employee’s personnel file. This written record confirms that the employee has been warned about a particular issue and that further misconduct or failure to improve could lead to more serious disciplinary action.

In most organisations, verbal warnings form part of a progressive disciplinary system, under which employers escalate sanctions only if problems continue. The usual sequence is:

• verbal warning
• written warning
• final written warning
• dismissal or other disciplinary sanction

However, this sequence is not fixed in law. Depending on the seriousness of the conduct, employers may move directly to a written warning, final warning or dismissal without first issuing a verbal warning, for example where the facts could amount to gross misconduct.

1. Verbal warning meaning in employment law

In UK employment law, a verbal warning does not have a specific statutory definition. Instead, it is a disciplinary sanction used within an employer’s internal disciplinary procedure. Employment tribunals tend to focus less on whether a warning was labelled “verbal” or “written” and more on whether the employer followed a fair and reasonable process and acted consistently with its policies and the ACAS Code of Practice.

A verbal warning therefore functions primarily as:

• a formal notification that a problem has been identified
• an opportunity for the employee to correct the issue
• a record that may be relied upon if further disciplinary action becomes necessary.

2. Informal management action vs formal verbal warnings

It is important to distinguish between informal management action and a formal verbal warning. Managers often deal with minor issues informally through guidance, coaching or an off-the-record conversation. This may be appropriate where the concern is isolated and can be resolved quickly without invoking formal disciplinary procedures.

A formal verbal warning, by contrast, is issued after the employer has decided to engage formal disciplinary processes. It forms part of the employee’s disciplinary record and should be confirmed in writing. The distinction matters because only formal disciplinary warnings will usually be relied upon if the employer later escalates action.

3. When employers may issue a verbal warning

Employers may issue a verbal warning where an employee’s conduct or performance falls below expected standards but the issue is not sufficiently serious to justify stronger disciplinary action. Depending on the employer’s policy, verbal warnings may be used for misconduct issues, and in some workplaces they may also be used for certain performance concerns where capability management is addressed within the disciplinary framework.

Common examples include:

• persistent lateness for work
• minor breaches of workplace rules
• unauthorised personal use of company equipment
• minor performance concerns or errors
• failure to follow reasonable instructions
• difficulties cooperating with colleagues.

Where the issue involves serious misconduct, employers may move directly to a written warning or more serious action. In some cases, it may also be appropriate to consider temporary suspension from work during investigation where allegations are serious and suspension is justified and handled fairly.

4. Verbal warning vs written warning

The main difference between a verbal warning and a written warning lies in the severity of the sanction and where it sits within the employer’s disciplinary policy. A verbal warning is usually the least severe formal disciplinary action, intended to address relatively minor issues and encourage improvement.

A written warning is typically issued where the misconduct or performance issue is more serious, or where the employee has already received a verbal warning and the problem continues. Despite the terminology, both verbal and written warnings are commonly documented in writing so the employer has a clear record of the action taken.

Section Summary

A verbal warning is normally the first formal stage of a workplace disciplinary process. It is used to address minor misconduct or certain lower-level performance concerns and to give employees an opportunity to improve before more serious disciplinary action is considered. While the warning may be delivered verbally, it is typically confirmed in writing and retained as part of the employee’s disciplinary record, and employers may bypass this stage where the seriousness of the allegations warrants stronger action.

Section B: Verbal Warning Procedure (ACAS Rules)

When issuing a verbal warning at work, employers should follow a fair disciplinary process that is consistent with the organisation’s internal procedures and the standards set out in the ACAS Code of Practice on Disciplinary and Grievance Procedures. While the Code does not prescribe a rigid, one-size-fits-all process, it sets out principles of fairness that tribunals expect employers to follow when dealing with misconduct and, where applicable under the employer’s policy, certain capability concerns.

A verbal warning may be viewed as a relatively low-level sanction, but it can form part of a progressive disciplinary record that may later be relied upon if further action is taken. For this reason, employers should ensure verbal warnings are issued through a transparent process with clear documentation and a genuine opportunity for the employee to respond.

Failing to follow the ACAS Code does not automatically make disciplinary action unlawful. However, in relevant tribunal claims, compensation can be adjusted by up to 25% where an employer unreasonably fails to comply with the Code.

1. Conducting a reasonable disciplinary investigation

Before issuing any disciplinary sanction, including a verbal warning, the employer should carry out a reasonable investigation into the allegations. The purpose of the investigation is to establish the facts and determine whether there is a case for the employee to answer. The scope of the investigation will depend on the seriousness and complexity of the allegations.

A disciplinary investigation may involve:

• interviewing the employee concerned
• obtaining statements from witnesses
• reviewing relevant documents or communications
• examining CCTV or other available evidence where relevant.

Employers should ensure investigations are conducted fairly, without unreasonable delay, and by an appropriate person. This stage should be approached as a fact-finding exercise, not as a foregone conclusion. Employers can find further practical guidance in relation to disciplinary investigation requirements and broader workplace investigation practices.

In misconduct cases, tribunals commonly consider whether the employer had a genuine belief in misconduct based on reasonable grounds following a reasonable investigation, as reflected in the principles derived from the decision in British Home Stores v Burchell. Although Burchell arises in the context of misconduct dismissal claims, the underlying requirement for a reasonable investigation is relevant to disciplinary fairness more generally.

2. Informing the employee of the allegations

If the employer decides there is a disciplinary case to answer, the employee should be informed in writing of the allegations. The notification should be clear enough for the employee to understand the concerns being raised and to prepare their response.

The notification should normally include:

• a clear description of the alleged misconduct or performance concerns
• the possible disciplinary outcomes that could result
• the time, date and location of the disciplinary hearing
• copies of the evidence that will be considered at the hearing, or confirmation of how it can be accessed.

Employees should be given reasonable time to prepare for the hearing. Some organisations allow several working days, but there is no fixed legal notice period. What is reasonable will depend on the complexity of the matter, the volume of evidence, the seriousness of the allegations and the employer’s own procedure.

3. Holding a disciplinary hearing

A disciplinary hearing gives the employee the opportunity to respond to the allegations before any decision is made. The employer should explain the concerns identified, present the evidence gathered and allow the employee to answer the case against them.

Employees should be given a reasonable opportunity to ask questions, present evidence and, where appropriate, call witnesses. If new information emerges at the hearing that requires further investigation, it may be appropriate to adjourn the matter and reconvene once additional enquiries have been completed.

Employees have the right to be accompanied at a disciplinary hearing where the outcome could result in a formal warning or other disciplinary action. The right applies where the employee makes a reasonable request and the companion may be a colleague or a trade union representative or official. Practical guidance on good practice hearings is set out in the disciplinary hearing process.

4. Deciding whether a verbal warning is appropriate

After considering all the evidence and submissions, the employer must decide whether disciplinary action is justified and, if so, what form it should take. Tribunals typically assess disciplinary outcomes by reference to overall reasonableness, including whether the employer’s decision falls within the range of reasonable responses open to a reasonable employer in the circumstances.

When deciding whether a verbal warning is appropriate, employers should consider factors such as:

• the seriousness of the misconduct or performance issue
• the employer’s disciplinary procedure and any express guidance on sanctions
• consistency with outcomes in similar cases in the past
• whether the employee is being treated fairly compared with others
• the employee’s disciplinary record, general work record, role and length of service
• any mitigating factors that may justify a lesser sanction
• whether training, support or reasonable adjustments are required to prevent recurrence.

Where the matter involves a first or relatively minor offence, a verbal warning may be an appropriate and proportionate response. However, employers should also be clear that warnings are not always required as a first step and that more serious sanctions may be justified depending on the facts, including where the allegations could amount to gross misconduct.

5. Communicating the disciplinary decision

Once a decision has been reached, the employer should inform the employee of the outcome without unreasonable delay. Even where the warning is delivered verbally in the outcome meeting, it is good practice to confirm the decision in writing so there is a clear record of what was decided and why.

The written outcome should explain:

• the findings made and the reasons for the decision
• the disciplinary action imposed, including confirmation of the verbal warning where applicable
• what improvement is required and any timescales
• how long the warning will remain active
• the employee’s right to appeal.

Employees should normally be offered the right to appeal any formal warning. The appeal process should be handled fairly and, where practicable, by someone not previously involved in the decision. Employers should ensure their approach aligns with their wider obligations under UK employment law, including the risk that procedural defects can undermine the fairness of a later dismissal decision and expose the organisation to unfair dismissal claims.

Section Summary

Employers should follow a fair disciplinary process before issuing a verbal warning. This will usually involve conducting a reasonable investigation, notifying the employee of the allegations and evidence, holding a disciplinary hearing with accompaniment rights where applicable and deciding on a proportionate outcome within the range of reasonable responses. Even though verbal warnings are often the lowest level of formal disciplinary action, they should still be handled carefully and documented properly to support consistency and fairness if issues later escalate.

Section C: How Long Does a Verbal Warning Last?

How long a verbal warning remains active is one of the most common questions raised by employers and employees. In practice, the duration of a verbal warning will depend on the employer’s disciplinary policy and the circumstances of the case, as there is no fixed statutory timeframe prescribed by UK employment law.

While verbal warnings are generally intended to address relatively minor issues, they can still form part of an employee’s disciplinary record for a defined period. During this time, the warning may be taken into account if further misconduct or performance issues arise.

Employers should ensure employees are informed of how long the warning will remain active and what improvements are expected during that period. Where the employer’s approach is set out in writing, this will often sit within the employment contract documentation, staff handbook or disciplinary policy.

1. ACAS guidance on warning duration

The ACAS Code of Practice on Disciplinary and Grievance Procedures does not specify how long disciplinary warnings should remain active. Instead, it emphasises fairness, consistency and proportionality when applying disciplinary sanctions. As a result, employers should set reasonable time limits for warnings and apply them consistently across the organisation.

Where a disciplinary policy specifies the duration of warnings, employers should normally follow the policy unless there is a clear and justifiable reason to depart from it. Employers should also document the length of the warning when confirming the outcome in writing so the employee understands the timeframe and expectations.

2. Typical duration of verbal warnings

Although there is no fixed legal rule, many employers adopt standard warning periods within their disciplinary procedures. Common examples include:

• verbal warnings remaining active for three to six months
• written warnings remaining active for six to twelve months
• final written warnings remaining active for twelve months or longer in more serious cases.

These timeframes are not legal requirements. The appropriate duration of a verbal warning will depend on factors such as the nature of the issue, the employer’s policy, the employee’s previous disciplinary history and whether the employer has provided adequate support, training or adjustments where relevant.

3. What happens when a warning expires

Once a warning period has expired, the warning will normally be treated as spent for the purposes of escalating disciplinary sanctions. This means the employer should not usually rely on an expired warning as the basis for moving to a higher-level sanction for a new and unrelated incident.

That said, employers may still retain records of expired warnings on an employee’s personnel file for administrative reasons. Retention should be proportionate and consistent with internal record-keeping practices. If disciplinary action later escalates to dismissal, reliance on outdated warnings can create risk, including arguments that the employer acted unreasonably or unfairly. Employers should therefore take care to follow policy and apply an appropriate weighting to past warnings.

Where dismissal is in contemplation, the employer’s overall approach will be assessed against UK employment law standards of reasonableness. Poor warning management can therefore feed into claims such as unfair dismissal, including in some circumstances automatically unfair dismissal where the real reason for dismissal engages protected statutory rights. Employers should also be aware that claims may still arise in some cases even where an employee has short service, including in contexts explored in unfair dismissal under 2 years guidance.

4. Do verbal warnings go on an employee’s record?

A formal verbal warning is usually recorded as part of the employee’s disciplinary record, even though the warning itself may have been delivered verbally during the disciplinary meeting. Employers typically keep a written record of the warning to document:

• the nature of the misconduct or performance issue
• the outcome of the disciplinary process
• the standards required and any improvement expected
• the duration of the warning and the consequences of further concerns
• the employee’s right to appeal.

Maintaining this documentation helps employers demonstrate that a fair process was followed and that the employee understood what was required. It can also assist with consistency if similar issues arise elsewhere in the workforce.

Section Summary

There is no fixed legal rule governing how long a verbal warning should last. The duration is usually determined by the employer’s disciplinary policy and the seriousness of the issue, with three to six months being a common practice period. During the active period, the warning may be taken into account if further issues arise, but once it expires it should not usually be relied upon to escalate sanctions. Clear written records and consistent application of policy reduce the risk of later disputes.

Section D: Verbal Warning Templates & Letters

Although a verbal warning is delivered orally during a disciplinary meeting or outcome discussion, it is standard practice for employers to confirm the warning in writing. This written confirmation does not necessarily change the categorisation of the sanction within the employer’s policy, but it provides a clear record of the disciplinary action taken and the expectations placed on the employee.

Documenting verbal warnings helps employers demonstrate that a fair and transparent process has been followed. If disciplinary action is later escalated, the written confirmation can also provide evidence that the employee was previously informed of the issue and given an opportunity to improve. This can be particularly important where disciplinary matters overlap with employee complaints and counter-allegations, including where a grievance procedure is engaged in parallel.

For these reasons, many employers use a verbal warning letter template or standard disciplinary outcome letter to ensure that the correct information is recorded consistently.

1. What a verbal warning letter should include

A verbal warning letter should clearly explain the outcome of the disciplinary process and the expectations placed on the employee going forward. Although the exact format may vary between organisations, the written confirmation should normally include the following:

• the outcome of the disciplinary hearing and the key findings
• a summary of the misconduct or performance issue that was investigated
• confirmation that a formal verbal warning has been issued
• the standards of behaviour or performance expected from the employee
• any improvement required and the timeframe for achieving it
• the length of time the verbal warning will remain active
• the consequences of further misconduct or failure to improve
• the employee’s right to appeal the decision and how to do so.

Including these points reduces the risk of ambiguity and helps ensure the employee understands both the reason for the warning and what steps must be taken to avoid further disciplinary action.

Employers should also be alert to the wider employee relations context. For example, an employee may raise a grievance at work about the disciplinary process or the behaviour of a manager during the process. In those situations, ensuring the warning documentation is clear, factual and consistent with the evidence can be important.

2. Example verbal warning letter format

Employers may adopt a standard format when confirming a verbal warning in writing. A typical verbal warning letter may include the following structure:

• Heading: Confirmation of verbal warning
• Opening paragraph: Confirmation that a disciplinary hearing took place and the date of the meeting
• Summary of the issue: A description of the misconduct or performance concerns considered
• Outcome: Confirmation that a verbal warning has been issued following the disciplinary process
• Expected improvements: The standards required, timescales and any support that will be provided
• Duration: How long the warning will remain active under the disciplinary policy
• Future consequences: A clear statement that continued issues may lead to a written warning or further action
• Right of appeal: How to appeal, deadlines and confirmation of accompaniment rights where an appeal hearing is held.

Using a consistent format helps ensure outcomes are communicated clearly and reduces the risk of misunderstandings, particularly where the employee later disputes the fairness of the process or raises an issue such as a grievance letter challenging the basis for the warning.

3. Verbal warning template example

The following example illustrates how employers may confirm a verbal warning in writing. Employers should adapt the wording to reflect their own disciplinary procedure and the circumstances of the case:

Subject: Confirmation of verbal warning

Dear [Employee Name]

Following the disciplinary hearing held on [date], this letter confirms the outcome of the meeting.

During the hearing we discussed concerns regarding [brief description of the issue]. After considering the information available, the decision has been made to issue you with a formal verbal warning.

You are expected to meet the required standards by:

• [set out required improvements in conduct or performance]
• [set out timescales and any support, training or guidance to be provided]

This verbal warning will remain active for a period of [three/six] months in accordance with the company’s disciplinary policy. During this time, any further misconduct or failure to improve may result in further disciplinary action.

You have the right to appeal this decision. If you wish to appeal, you should submit your appeal in writing to [manager or HR contact] within [timeframe] of receiving this letter. If an appeal hearing is arranged, you may have the right to be accompanied in line with statutory accompaniment rules and the company’s procedure.

Yours sincerely
[Name] [Position]

Employers should also consider whether related employee relations issues need to be managed alongside the disciplinary outcome. For example, where the employee raises a complaint about how the matter was handled, the employer may need to consider its approach under the grievance procedure, and in some cases whether the employee is asserting specific rights, such as those addressed in guidance on employee grievance raised situations.

Section Summary

Although a verbal warning is delivered verbally, employers should normally confirm it in writing to ensure a clear record of the disciplinary action taken. A verbal warning letter should summarise the disciplinary findings, explain the improvements required, confirm the warning duration and set out appeal rights. Using a consistent template supports fairness and helps manage risk if the disciplinary issue later escalates or becomes part of a wider dispute.

FAQs: Verbal Warnings at Work

1. What is a verbal warning at work?

A verbal warning is a formal disciplinary sanction issued by an employer when an employee’s conduct or performance falls below the required standard. It is often used as the first formal stage in a workplace disciplinary procedure and is intended to give the employee an opportunity to improve before more serious action is considered.

Although the warning may be communicated verbally during an outcome meeting, it is good practice to confirm the warning in writing so there is a clear and accurate record of what was decided and what is required going forward.

2. Does a verbal warning go on your record?

Yes. A formal verbal warning will usually be recorded on the employee’s disciplinary record and retained on their personnel file for a defined period, in line with the employer’s procedures. The written record typically confirms the nature of the concerns, the outcome reached, the improvements required, the duration of the warning and appeal rights.

3. How long does a verbal warning last?

There is no fixed legal rule governing how long a verbal warning should remain active. The duration will usually be set out in the employer’s disciplinary policy or staff handbook. In many organisations, verbal warnings remain active for three to six months, although the appropriate period will depend on the circumstances and the employer’s procedures.

Once a warning expires, it should not usually be relied upon to escalate sanctions for a new and unrelated issue. Employers should also ensure warning management aligns with their broader obligations under UK employment law, particularly if disciplinary matters later escalate and give rise to disputes, including unfair dismissal risk.

4. Can an employee appeal a verbal warning?

Employees should normally be offered the right to appeal any formal disciplinary sanction, including a verbal warning, especially where the warning forms part of the employee’s disciplinary record. The ACAS Code of Practice recommends an appeal stage and, as a matter of good practice, appeals should be handled fairly and, where practicable, by a manager who was not involved in the original decision.

5. Can an employer issue a verbal warning without a hearing?

Whether a hearing is required will depend on whether the employer is issuing a formal warning under its disciplinary procedure. Where a warning is formal and will be recorded on the employee’s disciplinary record, employers should normally follow a fair process that includes an investigation and a disciplinary meeting where the employee can respond.

For minor matters, managers may address issues informally without invoking the formal disciplinary process. If an employer’s policy permits a low-level formal warning without a full hearing, the employer should still ensure the employee understands the concern, has a chance to respond and the process remains fair and consistent.

6. What happens after a verbal warning?

After receiving a verbal warning, the employee is expected to improve their conduct or performance within the timeframe specified by the employer. If the employee improves and no further issues arise, the warning will normally expire after the stated period.

If the problem continues while the warning remains active, the employer may escalate disciplinary action, which could include issuing a written warning or final written warning, or taking more serious action in appropriate cases, including where the facts could potentially amount to gross misconduct.

7. Can a verbal warning lead to dismissal?

A verbal warning on its own does not usually lead directly to dismissal, but it can form part of a progressive disciplinary record. If issues continue and disciplinary action escalates, the employer may later rely on the warning as part of the context for more serious sanctions.

Where dismissal is ultimately in contemplation, employers should ensure the overall approach is fair and reasonable. Procedural failures earlier in the disciplinary process can undermine the employer’s position and increase the risk of tribunal claims, including unfair dismissal and, in some cases, issues discussed under unfair dismissal under 2 years. In rare cases where the reason for dismissal relates to protected rights, a claim for automatically unfair dismissal may also arise.

Conclusion

Verbal warnings are an important part of workplace discipline in the UK. They allow employers to address concerns about conduct or performance at an early stage while giving employees a clear opportunity to improve before more serious disciplinary action is considered.

Although verbal warnings are often viewed as a relatively minor sanction, they still form part of a formal disciplinary framework. Employers should therefore ensure that any warning is issued through a fair process that includes a reasonable investigation, a clear explanation of the concerns and an opportunity for the employee to respond. Following a structured disciplinary procedure helps ensure that decisions are consistent, transparent and defensible if challenged.

Employers should also document verbal warnings properly by confirming the outcome in writing, setting out the improvements required and specifying how long the warning will remain active. Clear documentation not only helps employees understand what is expected of them but also provides important evidence if disciplinary matters later escalate.

Handled correctly, verbal warnings can support constructive workplace management by resolving issues early and encouraging improvement. However, where disciplinary concerns continue, employers must ensure that any further action remains fair, proportionate and consistent with their wider obligations under UK employment law. In more serious situations, failure to follow a fair process can expose the employer to disputes or tribunal claims, including those relating to unfair dismissal.

Where employers are uncertain about the appropriate approach to disciplinary issues or warnings, seeking specialist employment law advice can help ensure compliance and reduce legal risk.

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