This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Detailed guide on how employers justify termination decisions in England and Wales. Covers statutory fair reasons for dismissal, procedural requirements, employment tribunal standards, employer evidence, common challenges and legal protections against unfair or automatically unfair dismissal.
Employers in England and Wales must justify termination decisions within a legal framework that protects both business interests and employee rights. Whether an employer dismisses an employee for performance issues, misconduct, redundancy or another substantial reason, the justification must align with statutory law and established procedures. This article explains how employers can lawfully justify termination decisions, the legal tests applied by employment tribunals, the importance of fair procedure, and common pitfalls to avoid.
The Legal Framework for Terminating Employment
A dismissal takes place when an employer ends an employee's contract of employment, with or without notice. Under the Employment Rights Act 1996 and related case law, an employer must show that the reason for dismissal was potentially fair and that the decision was handled reasonably in all the circumstances. If the employer cannot do this, an employee with sufficient qualifying service may challenge the dismissal as unfair before an Employment Tribunal.
Statutory Fair Reasons for Dismissal
UK law recognises five potentially fair reasons for terminating a contract of employment. An employer must identify one of these categories and, in practice, show that the reason genuinely applied to the employee's situation:
1. Conduct
Dismissal for conduct relates to unacceptable behaviour by the employee. This can range from minor disciplinary issues to gross misconduct (e.g. theft, serious breaches of policy). Employers must show evidence of misconduct and generally follow a disciplinary process before dismissal.
2. Capability
Capability refers to an employee's ability to perform the job. This can include poor performance or lack of required skills or qualifications. Employers often use performance reviews, improvement plans and documented discussions to justify capability‑based dismissals. Tribunals will assess whether the employer reasonably believed the employee could not fulfil the role.
3. Redundancy
Redundancy occurs when an employer needs to reduce the workforce because a job is no longer required. Genuine redundancy justification requires evidence that the role is being eliminated or restructured, and that fair selection criteria and consultation processes were applied.
4. Contravention of Statutory Requirement
Employers may dismiss if continued employment would be illegal. A typical example is where an employee loses a licence or legal qualification essential for the role (e.g. driving licence for a driver).
5. Some Other Substantial Reason (SOSR)
SOSR is a broad category for significant reasons not covered by the other four. This might include a serious breakdown in trust and confidence between the employer and employee or third‑party pressure (for instance, if a key client refuses to work with a particular employee). SOSR requires careful factual justification, as tribunals scrutinise whether the reason genuinely warrants dismissal.
The Two‑Stage Test: Reason and Procedure
Even when an employer identifies a potentially fair reason, the justification must satisfy a two‑stage legal test:
Substantive Fairness
First, the employer must show that the reason for dismissal falls within one of the statutory categories and genuinely applied in the individual case. Tribunals examine whether the employer honestly believed the reason and whether it was supported by evidence and legitimate organisational needs. They consider whether the decision was one that a reasonable employer could have made in similar circumstances.
Procedural Fairness
Second, employers must follow a fair and reasonable procedure in making the dismissal decision. The Acas Code of Practice on Disciplinary and Grievance Procedures provides widely accepted guidance. Key procedural elements include:
- Investigation of the issues before deciding on dismissal.
- Informing the employee of the concerns and allowing them to respond.
- Holding a disciplinary meeting where the employee can present their case.
- Considering alternative sanctions before deciding on dismissal.
- Providing written reasons and notice of dismissal, and explaining the right of appeal.
Tribunals factor procedural compliance into the overall fairness assessment. Failure to follow a fair procedure, even when the reason is potentially valid, can render the dismissal unfair.
Evidential and Investigative Requirements
Employers should document all stages of the decision‑making process to justify termination decisions. This typically includes records of:
- Performance reviews, warnings and improvement plans.
- Investigations into conduct or capability concerns.
- Meetings with the employee and their responses.
- Consultations and notes explaining the rationale for dismissal.
Tribunals review such evidence to determine whether the employer acted reasonably and within a “band of reasonable responses” - a legal standard acknowledging that reasonable employers may make different but acceptable decisions in similar situations.
Avoiding Unlawful or Automatically Unfair Dismissal
Even if an employer cites a potentially fair reason, the dismissal may be unlawful if it is automatically unfair or discriminatory. Examples include dismissal:
- For asserting statutory rights (e.g. minimum wage claims).
- Due to pregnancy, maternity leave or family‑related absence.
- Because of trade union activity.
- For health and safety whistleblowing or other protected actions.
In such cases, the employer cannot justify termination on any ground; the dismissal is automatically unfair, and the employee may claim compensation and remedies such as reinstatement.
Practical Examples and Challenges
Performance vs Capability
An employer claiming poor performance must show evidence that the employee was given adequate notice of performance standards and a reasonable opportunity to improve. Without clear targets or documented feedback, a tribunal may find the dismissal unfair.
Redundancy Without Consultation
In redundancy cases, failure to consult, use fair selection criteria or consider alternative roles can undermine an employer's justification, even if the job genuinely no longer exists.
Procedural Shortcomings
Tribunals have emphasised that flawed investigations and biased procedures can outweigh otherwise serious allegations. For example, where an employer's investigation into alleged harassment lacked impartiality and thoroughness, a tribunal found dismissal unfair despite the conduct issue being serious.
Common Questions About Employer Justification
Can an employer terminate for any reason stated in the contract?
Contracts cannot give employers carte blanche to dismiss for arbitrary reasons. The reason must still fall within statutory categories and be applied reasonably.
Is a written reason always required?
Employers should give written reasons. Employees with qualifying service generally have a right to a written explanation of dismissal if requested. Tribunals consider whether the employee was adequately informed of the grounds for dismissal.
Does following the Acas Code guarantee fairness?
Following the Acas Code does not automatically make a dismissal fair, but failure to follow it without good reason may lead a tribunal to adjust compensation in the employee's favour.
Key Takeaways
Employers justify termination decisions in England and Wales by establishing a statutory fair reason and applying that reason reasonably and consistently with fair procedures. The law recognises five principal categories: conduct, capability, redundancy, contravention of legal requirements, and some other substantial reason. Employers must document investigations, communicate clearly, respect employee rights, and follow the Acas Code of Practice to support a decision to dismiss. Even a valid reason may be insufficient without procedural fairness, and dismissals based on automatically unfair grounds or discriminatory practice cannot be justified. Understanding these legal requirements helps employers manage terminations lawfully and helps employees assess whether a dismissal was properly justified.
