AI-Generated Legal Claims Overwhelm UK Employment Tribunals, Creating Record 64,000-Case Backlog

Aug 8, 2026

Britain's employment tribunal backlog reaches a record 64,000 open cases as workers increasingly use free AI tools like ChatGPT and Grok to draft complex legal claims. While these tools lower the barrier to entry for self-representation, they flood the system with multi-hundred-page filings citing non-existent laws. This surge, particularly in emergency interim relief applications, creates a tragedy of the commons where workers with genuine grievances face years of delay and employers incur rising legal costs.

Employment tribunal case backlog

▪Britain's employment tribunal backlog reached a record 64,000 open single cases at the end of March 2026, up 55% from 45,000 a year earlier.
▪Employment tribunal presidents Judge Barry Clarke and Judge Susan Walker issued new guidance on June 22, 2026, to address the surge in AI-driven applications.
▪The share of complex open-track cases, such as sex or age discrimination disputes, in British tribunals increased from 33% in 2020–2021 to 61% in the year ending March 2026.
▪The number of workers filing claims against employers in Britain rose by 39% to 50,000 in the year ending March 2026.

Interim relief application surge

▪Interim relief applications in Great Britain surged from about 20 a year to roughly 20 a month at each of the tribunal's 12 regional offices.
▪Most of the surged interim relief applications in Great Britain involve whistleblowing, safety violations, or protected disclosure claims.

AI-generated claim characteristics

▪A secretary who drafted her employment claim with ChatGPT left the judge with a strong impression that she did not understand or could not substantiate her case.
▪AI-generated tribunal filings often stretch to hundreds of pages, list dozens of claims, and cite non-existent laws or irrelevant historical documents.
▪An NHS employee used the AI chatbot Grok to draft a 282-page tribunal claim containing 67 separate allegations, intending to rely on only ten percent.

Employer response to AI claims

▪Lawyer Tim Lang advised employers to identify the core concern of AI-drafted grievances, investigate facts, and avoid using AI to generate responses.
▪More than half of UK HR professionals report a surge in AI-generated grievances, complaints, and appeals drafted by employees.

Tragedy of commons effect

▪Employers face prolonged uncertainty and rising legal costs defending against weak or fabricated claims that may not have been filed without free AI tools.
▪The ease of filing free AI-drafted claims creates a tragedy of the commons, forcing workers with genuine grievances to wait longer for hearings.