Fashion waste from Nike, Clarks and other top brands’ suppliers burnt in toxic kilns employing modern-day slaves in Cambodia

Greenpeace urges firms to crack down on “sickening” practice


Clothing waste generated in Cambodia during the production of apparel and footwear for global fashion brands, including Nike, is incinerated to fuel brick-making, driving emissions and exposing bonded workers to toxic fumes. 

An Unearthed investigation found labels, footwear, fabric and garment scraps from Nike, Ralph Lauren, Michael Kors, Reebok, Next, Diesel and Clarks at five different kilns fueling their fires with garment and textile waste. This is happening despite many of these household names having made high-profile pledges to cut waste and emissions and crack down on modern-day slavery. 

Read the full investigation, watch the video and download images.

The scraps are mostly offcuts from Cambodian factories that manufacture clothing for leading fashion brands. These factories dispose most of their textile waste at a landfill or elsewhere through licensed waste disposal companies. But through a web of middlemen, some of the waste is sold to kiln owners as cheap fuel – despite this practice breaching environmental laws and regulations. [1]

To manufacture bricks workers move dried slabs of clay by hand into the kilns, where they burn for a couple of days in temperatures reaching up to 650C. To maintain such heat, the kilns need to stay fired and workers burn fuel – in some instances a mix of garment waste and wood – around the clock. 

As a large proportion of clothing is made up of synthetic materials like plastic which – when burnt – can often release toxic chemicals, burning garments in kilns causes local air pollution and exacerbates the carbon footprint of clothes destined for Europe and the US. The black plumes of smoke often seen rising out of the kilns endanger the health of vulnerable workers, with reported health impacts including coughs, colds, flus, nose bleeds and lung inflammation. 

The burning of acrylic garments, especially when combined with plastic bags, hangers, rubber and other waste as occurs in Cambodia, releases plastic microfibres and other toxic chemicals into the immediate environment which compromise the health of workers and neighbours on a short and long term basis. The human impacts, in particular, are substantially worse than burning wood and have been highlighted in a recent UK parliamentary report as a major problem in the industry,” says Dr Laurie Parsons of UK’s Royal Holloway University.

Parsons co-authored a seminal 2018 report exposing the practice of garment incineration in Cambodian kilns. That report also identified garment waste linked to major high-street brands at brick kilns. 

The Cambodian brick sector has also become infamous for human rights abuses, including debt-bondage – the most common form of contemporary slavery, according to the United Nations (UN). Many kiln workers are ex farmers, who took out loans to meet farming expenses and whose crops failed because of unpredictable weather patterns caused by climate change, according to Dr Parsons, whose 2018 report also links climate change to slavery in Cambodia’s kilns.

Entire families can end up trapped for years in intergenerational debt bondage, with children taking over the parents’ debt after their loved ones pass. Unearthed spoke to 21-year-old Samneang, whose name was changed to protect his identity, who has been paying off his parents’ $2,000 USD debt since he turned 15. His health seems to have already suffered from working at the kiln, and he has since borrowed an additional $400 USD from the kiln owner, partly for medical expenses. 

Commenting on the findings, Viola Wohlgemuth, a circular economy and fashion waste campaigner at Greenpeace, said:
“It’s sickening to see fashion waste from leading brands being turned into toxic pollution in kilns employing modern-day slaves. Scorching heat, poisonous fumes, and appalling working conditions – this is a hellscape that should have no place in any 21st-century industry.

“Many of these brands have been trumpeting their efforts to cut waste and carbon emissions, yet they have failed to stop these awful practices from happening on their watch. This is rank hypocrisy. The fashion industry keeps churning out mountains of waste at both ends of their supply chain, and all too often it’s poorer communities in the global South that end up stuck with it.

“If Nike, Clarks and other corporates mean a word they say about waste and human rights, then they should finally question their wasteful business model and clamp down on any form of modern-day slavery and environmental destruction anywhere in their supply chain.”

While kiln fires are predominantly fueled by wood, a 2020 survey conducted by a local union and Dr Parsons found that 23 out of 465 kilns burnt garment waste. “And they were in most cases burning several tons a day. So we’re looking at hundreds of tons of garments being burned every day,” Parsons told Unearthed

The apparel industry has been the lynchpin of Cambodia’s economy and the biggest employer in the country, hiring over 700,000 predominantly female workers. But it has also been the biggest industrial waste producer, generating no less than 90,000 tons of garment waste per year. 

The brands whose offcuts Unearthed found at the kilns incinerating garment waste have committed to ambitious social and environmental sustainability targets in their operations. They have anti-mondern slavery statements and pledges to eliminate waste and carbon emissions in their supply chain. 

Nike’s much-advertised “Move to Zero” campaign promises a “journey toward zero carbon and zero waste”. This includes diverting 100% of waste from landfill in Nike’s supply chain and zero carbon emissions — meaning they’ll be at or below 2020 levels — from key suppliers by 2025. Nike, Ralph Lauren, Michael Kors, Reebok, Next, Clarks and Diesel also have supplier codes of conduct, which at the very minimum require factories in Cambodia to respect local environmental laws and dispose of waste in line with applicable regulations. 

Unearthed contacted all the brands featured in the investigation to give them the opportunity to comment on the findings. The replies from those who responded can be found in the Unearthed article.

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Contact: Greenpeace UK deputy head of news, Alison Kirkman, on 07896 893154.


[1] According to a sub-decree on waste management, industries burning solid waste – which includes garment and fabric scraps – can be fined $250 USD. Another sub-decree warrants inspection by the Ministry of Environment where pollution endangers human health or the environment. However, pollution that endangers “human bodies or lives” appears to be a violation of Cambodia’s environmental law, which stipulates over $12,000 USD in fines and five years imprisonment for most egregious offenders.

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