This guide is maintained as a current resource for July 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.
Comprehensive guide to how the burden of proof works in workplace discrimination claims in England and Wales. Explains the two‑stage test under the Equality Act 2010, what claimants must show, how the burden shifts to employers, and practical implications for tribunal evidence and proceedings.
In workplace discrimination claims before an employment tribunal, understanding how the burden of proof operates is fundamental. The burden of proof determines which party must persuade the tribunal about certain aspects of the case and at what stage. Discrimination claims under the Equality Act 2010 involve nuanced legal principles that affect how evidence is evaluated and how tribunals reach their decisions. This article explains these principles, how burden of proof is applied in practice, and what practical implications it has for claimants and respondents.
Legal Framework: Equality Act 2010 and Section 136
The burden of proof in discrimination cases is governed by section 136 of the Equality Act 2010. This provision outlines how factual evidence is assessed when a person alleges discrimination, harassment or victimisation by an employer or another party. The aim is to ensure that tribunals assess evidence fairly and consistently in civil disputes involving protected characteristics.
Standard of Proof in Discrimination Claims
In civil employment cases, including discrimination claims, the standard of proof is the balance of probabilities. This means the tribunal must be satisfied that it is more likely than not that the claimant's version of events occurred. This is a lower threshold than the “beyond reasonable doubt” standard used in criminal cases.
Two‑Stage Test for Burden of Proof
In discrimination claims, tribunals normally apply a two‑stage test:
Stage One: Claimant Must Show Evidence from Which Discrimination Could Be Inferred
At the first stage, the claimant must provide evidence of facts from which the tribunal could conclude that discrimination occurred in the absence of any other explanation. This means presenting evidence of unfavourable treatment that appears linked to a protected characteristic, such as age, sex, race, disability or religion, without a neutral or lawful justification. Once such facts are established, the tribunal will proceed to the second stage.
For example, a claimant may show that colleagues without the protected characteristic received promotions or benefits that they did not, despite similar qualifications - suggesting possible discriminatory treatment.
Stage Two: Respondent's Explanation
If the claimant establishes a prima facie case, the burden shifts to the employer (respondent) to provide a credible, non‑discriminatory explanation for its conduct. The employer must show that the treatment was not caused by the protected characteristic but was based on legitimate, objective reasons. If the employer does not provide a satisfactory explanation, the tribunal may find that discrimination occurred.
The Supreme Court in Royal Mail Group Ltd v Efobi confirmed that the traditional two‑stage approach remains applicable under the Equality Act 2010 and that the statutory wording did not change this legal principle.
Prima Facie Evidence: What Claimants Must Show
To satisfy the first stage, claimants do not have to prove discrimination conclusively. Instead, they need to show facts that a tribunal could reasonably interpret as discrimination when there is no other plausible explanation. Evidence can include:
- Patterns of differential treatment compared with colleagues without the protected characteristic.
- Discriminatory remarks or conduct.
- Inconsistencies in employer explanations.
- Statistical indicators suggesting a disadvantage to a protected group.
Once evidence suggests discrimination at this prima facie level, the burden shifts and requires the employer to justify the conduct.
Employer's Role in Responding to the Claim
After the claimant meets the first stage, the employer must explain the treatment. The employer's evidence should demonstrate legitimate business reasons for the conduct, such as documented performance issues, objective selection criteria, or other neutral explanations. A lack of credible justification strengthens the claimant's case.
Tribunals have the discretion to weigh all evidence from both parties at the hearing, considering the employer's explanations along with the claimant's factual allegations.
Practical Examples
- Direct Discrimination: If a woman repeatedly overlooked for promotion despite strong performance and male colleagues with similar records were promoted, evidence of these patterns may allow the tribunal to infer discrimination. The employer would then need to justify decisions objectively.
- Indirect Discrimination: A workplace policy applied equally to all but disproportionately disadvantages employees with a particular protected characteristic may meet the first stage. The employer must show that the policy is a proportionate means of achieving a legitimate aim.
Impact on Proof and Evidence Gathering
Because the burden of proof requires claimants to present enough evidence to trigger the shift to the employer, early preparation of a case file is critical. Claimants should gather:
- Records of decisions, communications, performance reviews.
- Comparisons with colleagues.
- Any relevant documentation indicating patterns of conduct.
Employers should prepare evidence demonstrating legitimate explanations, such as objective performance metrics, formal policies applied consistently, and documented decision‑making processes.
Common Misconceptions
A claimant does not need to provide incontrovertible proof at the outset but must present sufficient facts to allow a tribunal to infer discrimination. Once such a case is made, the emphasis moves to the employer's explanation. Decisions in cases like Efobi affirm that claimants remain responsible for establishing prima facie evidence before burden shifts.
When Facts Are Not Disputed
In situations where key events are undisputed - for example, dismissal occurred or discriminatory language was used - the tribunal's focus may be on whether those facts amount to discrimination. Here, the employer may bear the burden of showing that the conduct was unrelated to the protected characteristic.
Summary
In discrimination claims under the Equality Act 2010, the burden of proof is a central legal concept governing how tribunals assess evidence. Claimants must first present facts from which discrimination could be inferred; if they do so, the burden shifts to the employer to offer a non‑discriminatory explanation. The standard of proof is on the balance of probabilities, and tribunals consider all evidence from both sides holistically. Understanding how burden of proof operates helps both employees and employers prepare and present their cases effectively before an employment tribunal.
