ChatGPT and Grok Spark Surge in UK Employment Lawsuits

A memo from British employment tribunal presidents Barry Clarke and Susan Walker has revealed a crisis in the country's legal system, where interim relief applications have surged a hundredfold. Workers are increasingly turning to free generative AI models like OpenAI's ChatGPT and xAI's Grok to draft their legal filings instead of hiring expensive lawyers. This sudden accessibility has contributed to a 39 percent increase in claims for the year ending March 2026, pushing the tribunal backlog up by 55 percent to a staggering 64,000 unresolved cases.

Many of these AI-generated submissions span hundreds of pages but are riddled with fabricated statutes and unrealistic demands. The strain on the system is expected to intensify with the introduction of the Labour government's new Employment Rights Act. This legislation introduces approximately 25 new grounds for worker claims and eliminates existing caps on compensation, potentially incentivizing even more automated filings.

This phenomenon is not unique to the United Kingdom. In the United States, a federal judge recently described AI-generated lawsuits as an "existential threat to the federal courts." However, technology could also provide a solution. A study from Pakistan demonstrated that when judges were equipped with AI tools and proper training, they were able to process cases at a much faster rate.

For legal practitioners and human resources departments, this shift dramatically increases the cost of doing business. Employers must spend significant time and money reviewing and responding to lengthy, AI-drafted complaints, regardless of whether the grievances are legitimate or entirely fabricated. Meanwhile, employees with genuine claims face much longer wait times for justice as tribunals struggle to sort through the automated noise.