How To Prove Procedural Breach In A Disciplinary Dismissal

What “procedural breach” means in dismissal cases

A procedural breach in a disciplinary dismissal occurs where an employer fails to follow a fair and lawful process before deciding to dismiss an employee. Even where an employer believes there is a valid reason for dismissal (such as misconduct or capability), the decision may still be legally defective if the correct procedure is not followed.

In UK employment law, fairness is assessed not only on the reason for dismissal but also on the process used. Employment tribunals routinely examine whether the employer acted reasonably and followed established standards, including the ACAS Code of Practice on Disciplinary and Grievance Procedures. Failure to do so can contribute to a finding of unfair dismissal.

Legal framework governing disciplinary procedure fairness

Employment Rights Act 1996

Under the Employment Rights Act 1996, a dismissal may be unfair if:

• There was no fair reason for dismissal
• The employer did not act reasonably in treating that reason as sufficient
• The employer failed to follow a fair procedure

Tribunals assess reasonableness by reference to all circumstances, including internal policies and established codes of practice.

ACAS Code of Practice

The ACAS Code sets out minimum standards for disciplinary processes, including:

• Investigation of allegations before disciplinary action
• Informing the employee of allegations and evidence
• Allowing the employee to respond at a hearing
• Permitting accompaniment at disciplinary meetings
• Providing a right of appeal

Failure to follow the ACAS Code does not automatically make a dismissal unlawful, but tribunals take it into account when assessing fairness and may adjust compensation upwards or downwards depending on compliance.

Case law principle: Polkey reduction

Even if a procedural breach is proven, compensation may be reduced if the tribunal finds the employee would likely have been dismissed anyway had a fair procedure been followed (known as the “Polkey principle”).

This means procedural breaches are often central to liability but not always decisive on compensation.

What counts as a procedural breach in disciplinary dismissal

Common procedural failures include:

1. Inadequate or absent investigation

• No fact-finding before disciplinary action
• Reliance on unverified allegations
• Failure to consider exculpatory evidence

2. Failure to inform the employee properly

• No written allegations
• Vague or changing accusations
• Lack of disclosure of evidence

3. Bias or pre-determination

• Decision-maker involved in investigation without safeguards
• Evidence of a predetermined outcome
• Refusal to consider employee explanations

4. Denial of a fair hearing

• No disciplinary hearing held
• Employee not allowed to respond
• Unreasonable refusal to allow representation

5. Breach of right to be accompanied

Employees have a statutory right to be accompanied in formal disciplinary hearings where outcomes may include dismissal or disciplinary sanction.

6. Failure to offer an appeal

• No appeal stage provided
• Appeal heard by the same decision-maker
• Appeal process conducted unfairly

7. Ignoring internal disciplinary procedures

Where an employer has its own disciplinary policy, failure to follow it can be strong evidence of procedural unfairness.

How to prove procedural breach in practice

Proving procedural breach requires demonstrating, on the balance of probabilities, that the employer failed to follow a fair process.

Step 1: Obtain all relevant documentation

Key documents include:

• Employment contract
• Disciplinary policy or handbook
• Invitation letters to hearings
• Investigation reports
• Disciplinary outcome letter
• Appeal correspondence
• Meeting notes or recordings (where lawful)

These documents form the baseline for assessing compliance.

Step 2: Compare process against required standards

A structured comparison should be made between:

• What the employer did
• What the ACAS Code requires
• What the employer's own policy requires

Tribunals place significant weight on whether the employer followed its own stated procedure.

Step 3: Identify specific procedural defects

General dissatisfaction is insufficient. A claim must identify clear breaches such as:

• No investigation or superficial investigation
• No opportunity to respond to allegations
• Missing evidence or withheld documents
• Failure to provide reasons for dismissal
• Lack of impartial decision-maker
• No meaningful appeal process

The stronger cases identify multiple, specific procedural failures rather than isolated issues.

Step 4: Link the breach to unfairness

Tribunals assess whether the procedural breach affected fairness. This involves showing:

• The breach prevented a proper defence
• Relevant evidence was not considered
• The outcome may have been different with a fair process

Even where misconduct is proven, procedural defects can still render dismissal unfair.

Step 5: Use witness evidence where necessary

Witness statements may be used to demonstrate:

• How the investigation was conducted
• Whether the employee was allowed to respond
• Whether meetings were biased or predetermined
• Whether policies were ignored in practice

Consistency between documents and witness accounts is important.

Tribunal approach to procedural breaches

Employment tribunals generally apply a “range of reasonable responses” test. The key question is whether a reasonable employer would have followed the process used and still dismissed the employee.

Key considerations include:

• Severity of the alleged misconduct
• Quality of the investigation
• Opportunity given to the employee to respond
• Overall fairness of the procedure

A dismissal may still be unfair even if the employer had a potentially valid reason, if the procedure was significantly flawed.

Impact of proving procedural breach

If procedural breach is established, outcomes may include:

1. Finding of unfair dismissal

The dismissal may be declared unfair even if misconduct occurred.

2. Compensation adjustment

Tribunals may reduce compensation under the Polkey principle if dismissal was likely even with a fair process.

3. Increased compensation for Code breaches

Failure to follow the ACAS Code can lead to compensation adjustments of up to 25% in certain cases.

4. Reinstatement or re-engagement (rare)

In limited cases, tribunals may order the employee to be reinstated or re-engaged.

Common evidential challenges

Proving procedural breach can be difficult where:

• Employer has documented a formal process
• Employee did not attend hearings
• Evidence conflicts without clear documentation gaps
• Employer argues process was substantially fair despite minor defects

Tribunals focus on substance over technicality, meaning minor procedural errors alone may not be sufficient.

Practical legal considerations

• Time limits for unfair dismissal claims are generally 3 months minus 1 day from dismissal date
• ACAS Early Conciliation is required before issuing a tribunal claim
• Compensation is primarily financial loss-based, not punitive
• Appeals and internal grievances are often relevant evidence of procedural fairness

Key Takeaways

Proving procedural breach in a disciplinary dismissal requires demonstrating that the employer failed to follow a fair and reasonable process, typically measured against the ACAS Code and internal disciplinary policies. The most effective claims identify specific procedural defects such as inadequate investigation, lack of hearing, bias, or failure to allow appeal rights.

Even where misconduct is proven, procedural failures can render a dismissal unfair. However, compensation may be reduced if the tribunal finds the outcome would likely have been the same under a fair process.