Some of the world's leading tea manufacturers, including Tetley and Lipton, are examining working conditions on the plantations of Sri Lankan suppliers, following a Guardian investigation.
Two global trade-certification schemes, Fairtrade and the Rainforest Alliance, are also conducting inquiries after it was revealed that some workers on 10 certified estates could not afford to eat and were living in squalid conditions.
Tea pickers claim estate owners failed to support them during the country's economic crisis, which has seen prices of food, fuel and medicine soar, without wages rising to match.
The pickers reported supervisors refusing to pay them what they were owed and incidences of verbal abuse.
Some said they had so little money they had to skip meals and felt forced to send their children to work.
Tetley said it had suspended work with some central Sri Lankan estates while it conducted its own inquiries.
Ekaterra, which owns Lipton and PG Tips, said it was in contact with the Rainforest Alliance over the findings.
Yorkshire Tea, another company that sources tea from the estates the Guardian visited, said it was speaking to the plantations concerned.
More than 300,000 people work in Sri Lanka's tea plantations, which are mainly in the mountainous Central Highlands. In 2022, the industry generated $1.277bn in exports.
Tea pickers have been struggling since the country was plunged into an economic crisis after a disastrous ban on chemical fertilisers in 2021, which decimated tea yields and caused production to fall to a 26-year low last year. Workers must pick at least 18kg a day to earn 1,000 Sri Lankan rupees (about $3.25)- a fee set by the government's wage board in 2021. If they pick less, they get a lower rate for each kilo.
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