How to Challenge Procedural Errors in a Dismissal Process

In UK unfair dismissal claims, procedural fairness is often as important as the reason for dismissal itself. Under the Employment Rights Act 1996, an employer must not only have a potentially fair reason for dismissal but must also follow a fair and reasonable procedure before deciding to terminate employment.

Procedural errors can render a dismissal unfair even where misconduct, capability issues, or redundancy might otherwise justify dismissal. In Employment Tribunal proceedings in England and Wales, challenging these procedural defects is a key part of building a claim or defence.

This article explains what counts as procedural errors, how tribunals assess them, and how they can be challenged effectively in dismissal disputes.

What Are Procedural Errors in Dismissal Cases

Procedural errors occur when an employer fails to follow a fair disciplinary, capability, or redundancy process before dismissing an employee.

Common procedural requirements include:

• Conducting a reasonable investigation
• Informing the employee of allegations in writing
• Holding a disciplinary or consultation meeting
• Allowing the employee to be accompanied
• Giving the employee an opportunity to respond
• Providing a right of appeal
• Following internal disciplinary policies

Tribunals assess procedural fairness as part of the broader question of whether the dismissal was within the “range of reasonable responses” established in case law such as Iceland Frozen Foods Ltd v Jones.

Legal Test for Procedural Fairness

An Employment Tribunal will consider:

• Whether the employer followed a fair procedure overall
• Whether any procedural defects were significant or minor
• Whether the outcome would likely have been different if the correct process had been followed
• Whether the employer acted reasonably under section 98(4) of the Employment Rights Act 1996

Importantly, a dismissal may still be fair if minor procedural errors had no material impact on the outcome.

Common Procedural Errors in Dismissal Processes

1. Inadequate investigation

• Failure to interview relevant witnesses
• Ignoring key evidence
• Pre-determining the outcome before investigation

2. Lack of clear allegations

• Employee not informed of specific misconduct or concerns
• Vague disciplinary charges

3. Failure to hold a proper hearing

• No formal disciplinary meeting
• No opportunity for the employee to respond

4. Denial of accompaniment rights

• Preventing a trade union representative or colleague from attending

5. Biased decision-making

• Decision-maker involved in investigation stage
• Lack of impartiality

6. No meaningful appeal process

• Appeal not offered
• Appeal conducted as a formality rather than review

Step 1: Identifying Procedural Errors

The first stage in challenging procedural fairness is identifying specific defects in the process.

This involves reviewing:

• Disciplinary policy and whether it was followed
• Investigation records and evidence gathering
• Letters inviting the employee to hearings
• Minutes or notes of disciplinary meetings
• Outcome and appeal documentation

A clear timeline is essential to identify where procedural breakdowns occurred.

Step 2: Comparing Process Against ACAS Code of Practice

Tribunals often refer to the ACAS Code of Practice on Disciplinary and Grievance Procedures.

While not legally binding, it is highly influential.

Key expectations include:

• Informing the employee of allegations in writing
• Holding a fair disciplinary hearing
• Allowing representation
• Providing an opportunity to respond
• Offering an appeal

Failure to follow the ACAS Code may lead to an uplift or reduction in compensation of up to 25% in relevant cases.

Step 3: Gathering Evidence of Procedural Failures

Procedural challenges must be supported by evidence, including:

• Emails showing lack of communication or warning
• Disciplinary letters missing key information
• Meeting notes showing absence of proper hearing
• Witness statements confirming procedural irregularities
• Policy documents showing employer failed to follow its own rules

Tribunals rely heavily on documentary evidence when assessing procedural fairness.

Step 4: Presenting Procedural Challenges in Tribunal Claims

Procedural errors are typically raised through:

• The ET1 claim form (for claimants)
• The ET3 response (for employers defending fairness)
• Witness statements
• Cross-examination at the hearing

A structured approach is essential. Each alleged procedural defect should be:

• Clearly identified
• Linked to a specific stage of the process
• Supported by evidence
• Explained in terms of its impact on fairness

Step 5: Demonstrating Material Impact of Errors

Not all procedural errors make a dismissal unfair. The tribunal will assess whether the error was material.

A procedural defect is more likely to be significant if it:

• Prevented the employee from responding properly
• Influenced the outcome of the decision
• Resulted in incomplete or biased evidence
• Denied a fair opportunity to appeal

Minor technical errors without impact may be disregarded.

Step 6: Using Case Law Principles

Tribunals apply established principles when assessing procedural fairness, including:

• Whether the employer acted within a reasonable range of responses
• Whether the process was fair in substance, not just form
• Whether procedural defects undermined overall fairness

Cases such as Polkey v AE Dayton Services Ltd confirm that compensation may be reduced if a fair dismissal would have occurred even with proper procedure, but the dismissal may still be declared unfair.

Step 7: Challenging Employer Justifications

Employers often argue that procedural errors were minor or did not affect the outcome.

These arguments can be challenged by showing:

• The employee was not given a fair chance to respond
• The investigation was incomplete or biased
• Key evidence was not considered
• The decision was made prematurely

Consistency between documentation, witness evidence, and timelines is critical in rebutting employer claims.

Common Mistakes When Challenging Procedural Errors

1. Focusing only on outcome rather than process

Tribunals assess fairness of procedure, not just whether dismissal was justified.

2. Failing to link errors to impact

Procedural defects must be shown to affect fairness or outcome.

3. Overlooking internal policies

Employer disciplinary policies are often contractually or procedurally binding.

4. Ignoring the ACAS Code

Tribunals place significant weight on compliance with the ACAS framework.

5. Lack of structured evidence

Unorganised allegations reduce credibility and clarity.

Practical Approach to Building a Procedural Challenge

A structured approach typically involves:

1. Creating a timeline of dismissal events
2. Reviewing disciplinary and HR documentation
3. Identifying each procedural step taken or missed
4. Comparing actions against ACAS Code requirements
5. Collecting supporting evidence
6. Explaining the effect of each error on fairness
7. Presenting arguments clearly in witness statements and submissions

Key Takeaways

Challenging procedural errors in a dismissal process involves identifying failures in investigation, communication, disciplinary hearings, representation rights, and appeal procedures, then demonstrating how these defects affected fairness.

Key principles include:

• Employers must follow fair procedures under the Employment Rights Act 1996
• The ACAS Code of Practice sets expected standards
• Not all procedural errors make a dismissal unfair unless they are material
• Evidence must clearly show both the error and its impact
• Tribunals assess fairness in substance, not just technical compliance

Procedural fairness remains a central factor in determining the outcome of unfair dismissal claims.