Tesco has suffered a major setback in its ongoing equal pay dispute after the Court of Appeal dismissed the supermarket’s attempt to challenge how an Employment Tribunal assesses the work of shop floor staff compared with warehouse employees.
In a judgment delivered on 12 May 2026, the court upheld the Tribunal’s approach to evaluating the job roles of customer assistants and distribution centre operatives. The ruling represents a key stage in a wider legal battle involving tens of thousands of current and former Tesco employees, many of whom argue that predominantly female store staff are paid less than largely male warehouse workers performing work of equal value.
The case is being heard alongside separate Employment Tribunal proceedings in which Tesco is seeking to justify pay differences on the basis of market rates. Lawyers representing more than 16,000 claimants, from Leigh Day, argue that such a defence is not legally valid in this context.
At the centre of Tesco’s appeal was its objection to the Tribunal relying on internal company materials, including training manuals and operational documents, to determine what employees are required to do in their roles. Tesco argued that this approach overstated the importance of written procedures in defining actual day-to-day duties.
The Court of Appeal rejected that argument. It found that Tesco operates a highly standardised business model, supported by detailed training systems and digital stock management processes designed to ensure consistency across all stores. Judges said the company had a clear operational need for employees to perform tasks in a uniform way and that its own documentation could properly be used as evidence of job requirements.
The ruling is likely to have wider implications for large employers beyond the retail sector. By confirming that internal manuals and standard operating procedures can be used to define job roles, the judgment strengthens the position of claimants in large-scale equal pay disputes, particularly where employers have tightly controlled systems of work.
The court also criticised aspects of Tesco’s evidential approach during the case, including concerns about how witness evidence was presented. It further indicated that tribunals in complex equal pay claims may assess job roles in broader terms rather than requiring highly individualised analysis for each claimant, a development that could streamline future proceedings.
Employment lawyer Kiran Daurka of Leigh Day described the decision as an important step in improving access to justice for workers involved in large equal pay cases. She said the ruling reinforces the need to focus on the actual work performed rather than procedural barriers that can delay claims.
The judgment places renewed pressure on Tesco as it continues to defend one of the UK’s largest equal pay disputes. It also signals to other major employers that internal documentation used to standardise operations may now play a central role in future legal assessments of pay structures.
