How to Challenge an Unlawful Termination Decision

Unlawful termination occurs when an employee is dismissed in a manner that breaches their statutory or contractual rights. Common forms include unfair dismissal, discriminatory dismissal and wrongful dismissal due to inadequate notice or flawed procedure. Employees who experience unlawful termination can challenge the decision through internal processes and, if necessary, in an Employment Tribunal or court. This article explains the legal routes, requirements, time limits, practical steps and evidence needed to challenge unlawful dismissal in England and Wales.

Understanding Unlawful Termination

Termination becomes unlawful when an employer breaches the law or contractual terms in ending the employment relationship. Key legal protections include:

• Unfair dismissal rights, which apply when an employee with qualifying service is dismissed without a fair reason or fair procedure;
• Automatic unfair dismissal, where dismissal is for a protected reason (such as asserting a statutory right or whistleblowing);
• Discrimination dismissal, where dismissal is connected to a protected characteristic under the Equality Act 2010; and
• Wrongful dismissal, where contractual obligations (such as notice periods) are breached.

Employees must first identify the basis for challenging the termination to pursue the correct legal route. Understanding the nature of the breach helps determine the type of claim to bring.

Step‑by‑Step: Challenging Your Termination

1. Seek a Written Explanation for Your Dismissal

Before challenging a dismissal externally, employees should request a written explanation of why they were dismissed if they have not already received one. Under current law, employees with sufficient service can insist on written reasons within a specified period. This document is often key evidence to assess whether the dismissal was lawful and helps frame future claims.

2. Use Internal Appeal Processes

Many employers have formal appeal mechanisms within their disciplinary or dismissal procedures. Raising an appeal allows you to present your case internally, request reconsideration of the decision, and preserve evidence of your challenge. Employers should set out appeal rights in dismissal letters and policies.

Even where appeal rights exist, Employees must not assume appeal delays affect statutory time limits for raising external claims. Internal processes can take time, but Employment Tribunal time limits continue to run unless paused by early conciliation.

3. Raise a Formal Grievance (If Applicable)

If internal appeal options are limited or an appeal is unsuccessful, a formal grievance can document concerns around the fairness or legality of the termination. Grievances require employers to investigate complaints and provide responses, creating an evidential record should the dispute progress externally. (Steps consistent with Acas guidance typically encourage such formalisation.)

4. Notify Acas and Start Early Conciliation

Before making an Employment Tribunal claim, you must notify the Advisory, Conciliation and Arbitration Service (Acas) of your intention to claim. Acas offers early conciliation, a free process where a conciliator helps both parties explore settlement options. Early conciliation is compulsory before a tribunal claim and pauses the time limit for bringing a claim while it is ongoing.

Early conciliation is voluntary for employers, but obtaining an Acas early conciliation certificate is essential to proceed to a tribunal if settlement is not reached.

5. File an Employment Tribunal Claim

If conciliation fails, the next step is to lodge a claim with the Employment Tribunal. This involves completing and submitting an ET1 claim form, identifying the legal grounds (such as unfair dismissal, discrimination or wrongful dismissal) and attaching your Acas certificate. Time limits are strict: for most termination claims, you must notify Acas within three months less one day of the effective date of termination.

Tribunals assess whether:

• The employer had a fair reason to dismiss;
• A fair procedure was followed;
• The reason fell within what a reasonable employer could do in similar circumstances.

For automatic unfair dismissal and discrimination claims, there is usually no qualifying period of service, meaning you can bring a claim even with short service.

Key Legal Requirements and Evidence

Employment Status

Only employees (not independent contractors) can typically bring unfair dismissal claims. Employment status is determined by factors such as mutual obligations, the degree of control and the contractual terms of engagement. Evidence such as written contracts, payslips and communications can be important.

Fair Reason and Fair Procedure

Unlawful termination often turns on whether the dismissal was for a fair reason (such as misconduct, capability or redundancy) and whether the employer followed a fair process, which usually aligns with the Acas Code of Practice on disciplinary and grievance procedures. Failure to follow fair procedures can make a dismissal unfair even if there was a potentially fair reason.

Evidence should include:

• Written dismissal and appeal letters;
• Company disciplinary and grievance policies;
• Records of meetings and investigations;
• Witness statements and correspondence.

Time Limits

Tribunal claims must generally be made within three months less one day of the effective date of termination or the date of dismissal, whichever is relevant. Early conciliation pauses the time limit while in progress, but initiating it within the original time limit remains essential.

Failing to comply with time limits can usually bar the claim, although tribunals may exercise discretion in very limited circumstances.

Remedies for Successful Challenges

If a tribunal finds that your termination was unlawful, potential remedies include:

• Compensation for financial loss, including lost earnings and benefits;
• Reinstatement (return to the same job) or re‑engagement (offered a comparable position), though these are less commonly awarded;
• Award for discrimination may be uncapped, depending on the nature of the unlawful act.

Compensation aims to place the claimant in the position they would have been had the unlawful termination not occurred.

Practical Considerations and Risks

Tribunal Backlogs and Delays

Employment Tribunals are experiencing significant backlogs, with cases often taking many months to be listed for hearing. This can affect strategic planning and timing for claims.

Early Legal or Advisory Support

Employment law is complex. Early discussions with a trade union, solicitor or legal adviser can help clarify your claim type, evidence and prospects before initiating formal steps like early conciliation or tribunal filing.

Common Questions

Can I challenge a dismissal if I have less service?
Yes in certain cases, such as automatically unfair dismissal and discrimination, you can challenge a dismissal regardless of length of service. For ordinary unfair dismissal, qualifying service usually applies.

Do I have to go to a tribunal if I claim?
Not necessarily. Many disputes resolve during early conciliation or appeal processes before reaching a formal hearing.

Will challenging affect my reference?
Employers should not give adverse references in retaliation for legal challenges; doing so may give rise to further claims such as victimisation.

Key Takeaways

Challenging an unlawful termination involves understanding your legal rights, using internal appeal and grievance procedures, engaging with Acas early conciliation and, if necessary, bringing an Employment Tribunal claim within strict time limits. Clear evidence, early advice, and knowledge of what tribunals will assess are essential. Remedies can include compensation or even reinstatement, but strategic choices about resolution, such as using settlement discussions, can also be appropriate.