TikTok is being threatened with legal action over cuts to its UK online safety teams.
In August, the social media company announced more than 400 workers would lose their jobs, with AI replacing some of the workers and other jobs being rehired abroad.
TikTok is being accused of threatening those safety workers with redundancy days before they were due to vote on forming a union.
Read more: TikTok moderators warn users may be at risk
Now, two moderators have sent a legal letter to TikTok laying out the terms of a potential legal case on grounds of unlawful detriment and automatic unfair dismissal.
Unlawful detriment is when an employer treats a worker unfairly because they used a protected employment right, for example, being a union representative, asking for flexible working or whistleblowing about the company.
“In June, TikTok said it was going to hire hundreds more content moderators, then two months later, they fired everyone,” said Stella Caram, head of legal at Foxglove, a non-profit supporting the moderators.
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“What changed? Workers exercised their legal right to try to form a trade union. This is obvious, blatant and unlawful union-busting,” she said.
TikTok has been given one month to respond to the legal claim.
A TikTok spokesperson said: “We once again strongly reject this baseless claim.
“These changes were part of a wider global reorganisation, as we evolve our global operating model for Trust and Safety with the benefit of technological advancements to continue maximising safety for our users.”
The two moderators launching the case are working with the United Tech & Allied Workers (UTAW), the non-profit legal organisation Foxglove and law firm Leigh Day.
In exclusive interviews last month, three whistleblowers told Sky News the cuts would put UK users at risk, a claim repeated by Julio Miguel Franco, one of the moderators behind the legal action.
“TikTok needs to tell the truth,” he said.
“When it says AI can do our job of keeping people safe on TikTok, it knows that’s rubbish.
“Instead, they want to steal our jobs and send them to other countries where they can pay people less and treat them worse. The end result is TikTok becomes less safe for everyone.”
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Internal documents seen by Sky News show that TikTok planned to keep its human moderators in London for at least the rest of 2025.
The documents lay out the increasing need for dedicated moderators because of the growing volume and complexity of moderation.
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TikTok’s head of governance, Ali Law, also told MPs in February that “human moderators … have to use their nuance, skills and training” to be able to moderate hateful behaviour, misinformation and misleading information.
After a series of letters between TikTok and MPs, Dame Chi Onwurah, chair of the science and technology select committee, said she was “deeply” concerned about the cuts.
“There is a real risk to the lives of TikTok users,” she said.
Last month, in an exclusive sitdown with Sky News, however, Mr Law said user safety would not be compromised.
“We set a high benchmark when it comes to rolling out new moderation technology.
“In particular, we make sure that we satisfy ourselves that the output of existing moderation processes is either matched or exceeded by anything that we’re doing on a new basis.
“We also make sure the changes are introduced on a gradual basis with human oversight so that if there isn’t a level of delivery in line with what we expect, we can address that.”
