There is no fee for taking a case to an employment tribunal.  In 2017 the Supreme Court judged that the law at that time, which stated claimants must pay, was unlawful. However, most people choose to get a lawyer to help them and of course this means there are legal fees to pay.  Your insurance or membership of a trade union may cover some of the costs. In general, both sides will pay for their own legal costs, regardless of whether they win or lose.  This helps employees who often have fewer financial resources than employers, to access the employment tribunal system. That said, it’s possible that the tribunal could award costs against a party if their behaviour is deemed by the judge to be, for instance, vexatious or unreasonable.