How to successfully win an employment tribunal claim

In this latest podcast, our employment law experts discuss the practical strategies employers should take to maximise their chances to win or defend against an employment tribunal claim.

Since their initial introduction in the late 70s (know then as ‘Industrial Tribunals’), employment tribunals have developed significantly into a robust legal process which requires witness statements and procedural requirements and follows set rules to ensure a fair process.

The number of claims brought before the courts continue to increase as employees become more aware of their rights. That rise looks set to continue  following the Employment Rights Act 2025 reforms. The reduction in the minimum period of service required for an unfair dismissal claim changed from two years to six months, alongside existing risk in relation to  discrimination and whistleblowing claims highlights the importance of employers documenting clear, legitimate reasons for all employment decisions.

Pre-claim preparation: Building your defence before proceedings begin

Employers should approach all employee relations with the awareness that any correspondence may be scrutinised in an employment tribunal further down the line. Our key recommendations include:

• Maintain a respectful, professional tone in all written communications and ensure every statement can be justified under cross-examination.
• When defending against allegations of whistleblowing or discrimination, employers should focus on articulating the positive reasons for decisions with absolute clarity, rather than simply denying that protected characteristics or disclosures played any role in the decision.
• Explicitly reference ACAS codes, internal policies, and specific evidence relied upon in the decision-making correspondence. This creates a clear documented record that will assist witnesses whose recollection of events will have naturally faded closer to the trial date.

Responding to tribunal claims: The ET3 form as a strategic document

Upon receiving early conciliation notification from ACAS, employers should collate key documents and familiarise themselves with potential complaints. Although the 28-day deadline for submitting the ET3 response doesn’t start until the employment tribunal sends out a copy of the claim, that time passes quickly, and extensions of time are not often granted.

The ET3 response gives the tribunal judge the first impression of the employer’s case and offers an opportunity to shape the panel’s thinking from the outset. It should present the employer’s position clearly, concisely, and chronologically, to avoid getting bogged down in peripheral issues, whilst ensuring complete accuracy to prevent later amendment applications. This stage also provides both parties with the opportunity to evaluate whether settlement discussions are appropriate or whether resources should focus entirely on defence. For an employer, being able to demonstrate through their ET3 response that they are clear on the key issues and relevant evidence can be a helpful tool.

Case management: Controlling the agenda

Taking control of the case management hearing is essential for fostering successful outcomes. The list of issues is particularly critical as it effectively determines the scope of disclosure, witness requirements, and the matters to be decided at the final hearing. We always advise clients to prepare clear, cogent agendas and a list of issues to help the judge, who may then decide to copy directly into case management orders.

Where an agreement with an unrepresented claimant proves difficult, an employer may choose to submit separate documents to distinguish each party’s position. It’s important to strike a balance between keeping issues narrow to reduce exposure and complexity, whilst still maintaining the claimant’s case to avoid later amendment applications.

When dealing with requests for further particulars from vague claim forms, employers should exercise caution to ensure they don’t improve the claimant’s case by giving them the opportunity to articulate their allegations more clearly. On the other hand, it may be advisable to gain greater clarity so that the witness statements of the employer’s witnesses can fully engage with points that might otherwise take them by surprise at the main hearing.

Similarly, whilst costs warning letters can create pressure on opponents to withdraw weak claims, they risk being perceived as bullying and should be deployed judiciously.

Document disclosure and bundle preparation

Disclosure is often one of the most onerous steps for employers when preparing for an employment tribunal. Claimants often disclose irrelevant documents or make extensive disclosure requests. Employers should take a pragmatic approach by including a disputed documents section at the end of the bundle. This allows the employer’s case to be more focused on the relevant issues  and makes it easier for the judge to assess the case.

Witness statements: The most critical factor in the claim

Witness statements are arguably one of the most important elements in winning or losing a tribunal case. The key considerations for the employer include:

• Ensure key decision makers give evidence.
• Address all the relevant issues from the agreed list, ensuring no gaps exist in the employers reasoning for their decision.
• Clearly explain the practical, business reasons for their decision for the judge to understand the reason for the action taken.
• Carefully cross reference statements against existing documents to avoid any inconsistencies that might be exploited during cross examination.
• Using clear concise language that reflects how the witnesses speak and avoid any legal jargon. This ensures the witness can take ownership of their statements and are familiar with what has been included.
• Preparing the witnesses for the difficult questions they might come across during proceedings.

Conduct at the hearing and witness preparation

Witnesses usually go straight into the cross-examination without having time to ‘warm up’, which underlines the importance of being prepared properly. Some practical recommendations we usually suggest to clients include:

• Arrange for witnesses to attend public hearings to understand the process and familiarise themselves with the tribunal environment.
• Guide witnesses to watch the judge’s pen and slow down when they can see them writing to ensure they can note down key points.
• Ensure the witnesses have a positive demeanor during proceedings.
• Remind witnesses to take their time when answering questions and remain composed to pause, think and refer to the relevant documents in the bundle.
• Make sure witnesses are present for the full hearing to hear evidence from the other witnesses to flag any inaccuracies.
• Remain alert during proceedings to ensure witnesses aren’t fatigued and can remain a vital part of the case.

For more information about any of the issues covered in this update, or if you are an employer or employee needing further advice in relation to an employment tribunal claim, please get in touch with one of our Employment Law solicitors today.