The principle of equal pay for equal work, enshrined in British law since the 1970 Equal Pay Act, was originally designed to eliminate blatant gender-based wage discrimination. However, recent tribunal rulings have expanded the scope of equal pay claims to encompass comparisons between jobs predominantly held by women and different roles dominated by men, based on the notion of "work of equal value." This shift has raised concerns about the financial sustainability of this approach for employers and public bodies.
The 1970 Act emerged amid growing pressure from the labour movement and high-profile industrial action, notably the 1968 Ford sewing machinists strike in Dagenham. The strike, led by female workers paid significantly less than their male counterparts in ostensibly similar production roles, catalyzed trade union support for equal pay legislation. This marked a turning point after decades of institutionalised gender pay disparities, including in professions such as teaching, where early unions explicitly aimed to maintain male dominance and wage advantages during and after World War I.
Today, the landscape of equal pay disputes has greatly evolved. Employment tribunals increasingly consider claims where roles do not match exactly but are deemed of "equal value." A notable example occurred in 2024, when over 3,500 employees of retailer Next were awarded a collective £30 million. The claimants argued their predominantly female retail workforce was paid less than the mostly male warehouse staff. Despite evidence presented that warehouse roles had higher vacancy rates and were consequently harder to fill, tribunals ruled the work was of equal value, requiring compensation.
The principle of “equal value” was incorporated into UK law through an amendment to the Equal Pay Act in 1983, reflecting obligations under European Union law, specifically the Treaty of Rome. This standard has since been interpreted expansively through EU directives and case law. Post-Brexit, the UK has maintained these interpretations without modification, despite warnings about the financial pressures on employers and local authorities.
The financial impact of these rulings has been significant. For instance, Birmingham City Council faced potential payouts exceeding £1.3 billion related to claims from predominantly female cleaners and clerical staff against male-dominated refuse workers. Similarly, supermarket chain Asda reportedly faces claims amounting to approximately £1.2 billion under comparable circumstances.
Critics argue that while addressing historical pay inequality remains essential, the current application of “equal value” extends beyond clear cases of discrimination and risks imposing unsustainable liabilities. Supporters contend these measures enforce essential gender pay equity in modern, structurally complex workplaces. The debate highlights ongoing tensions between protecting workers’ rights and maintaining economic viability for employers in a changing labour market.