GMB - Health Risks of Glyphosate 

Glyphosate is a the key ingredient in a powerful herbicide (weedkiller) most commonly known as Roundup but also known as Accord, Rodeo, touchdown and Rosate.  It was developed by manufacturer Monsanto in the early 1970s and has been on the market since 1973.  It is the most commonly used weedkiller in the world.

See Safety Data Sheet - Monsanto Amenity Glyphosate  

Why is it an issue?

Glyphosate hit the headlines earlier in August, when a jury in the United States awarded Dewayne Johnson $289M after it determined that glyphosate exposure at work had substantially contributed to his terminal illness diagnosis. Mr Johnson was diagnosed with nonhodgkinson lymphoma. The trial exposed a range of poor practices by Monsanto, including , the jury found, attempting to muddy the waters over whether glyphosate causes cancer. 

What are the risks from Glyphosate? 

There have long been concerns over the potential health risks from glyphosate exposure, but the chemicals industry have been quick to point to a lack of research findings pointing to clear harm being proven. 

The major health risk identified was until recently concern over stomach bacteria. It can also cause discomfort if it is breathed in. Exposure to the eyes can result in conjunctivitis. If swallowed it may cause corrosion of the throat and can lead to kidney or liver failure. In March 2015, The World Health Organisation’s International Agency on Research into Carcinogens (IARC) announced that glyphosate probably caused a type of cancer called Non-Hodgkinson Lymphoma . This was based on a study of agricultural workers in Sweden, Canada and the USA who were exposed to the chemical, although it was backed up by tests on animals. 

How does glyphosate exposure occur? 

The exposure method is unclear. IARC could not determine whether the cancer is being caused by contact through the skin or through breathing it, or both. It is thought that skin contact is the primary route of exposure. It is therefore necessary to try to prevent any workers coming into contact with glyphosate. 

Who is at risk? 

Glyphosate is commonly used in agriculture, forestry and horticulture. GMB members at potential risk include parks staff, agricultural workers, gardeners, and some forestry workers. It is not only those who spraying the weedkiller who may be at risk, but also those working around them when the herbicide is being applied. 

What is the law around using glyphosate? 

The HSE has not banned products containing glyphosate, and it is possible to buy them from any garden centre in the UK. But employers have to comply with health and safety law when using the weedkiller. 

The specific regulations are the Control of Substances Hazardous to Health Regulations 2002 (COSHH). These require the employer to prevent exposure totally wherever possible. If that is not achievable they should control exposure levels so the risk of harm is ‘as low as is reasonably practicable’. 

This means the employer has to follow a hierarchy of measures: 

They also need to provide information and training for all those who use the chemical or who may be exposed. 

A risk assessment will be required, and this must be performed by a competent person in consultation with the workforce. Any spraying activity also needs to comply with regulations on the use of herbicide.

These state that employers must: 

Source: TUC 

Can I refuse to use products containing glyphosate? 

Not at the present time. HSE has not banned or restricted glyphosate containing products, and they have not been withdrawn from sale, although Homebase and Wilko are reviewing their sales policies. Outright refusal could constitute breach of contract, though all members are entitled to ensure that the correct protective equipment is provided before commencing any work. 

Advice from GMB is to: 

What have manufacturers done about glyphosate? 

Monsanto challenged the IARC finding, and refused to change the packaging of their products to highlight the potential cancer risk. More significantly, a wider industry body - ‘The Industry Task Force on Glyphosate’, which is made up of Glyphosate producers including Dow, Monsanto, Sygenta and United Phosphorous - has briefed that glyphosate is safe to use. It is not an impartial institution and its guidance cannot be taken as any more than industrial protectionism. 

One of the key outcomes of the Johnson trial in the US was the discovery that Monsanto:

and used this body of evidence to lobby regulators in the US and EU that glyphosate was considered to pose no hazard to health. 

As a result, many employers will still believe that glyphosate is completely safe to use, as there is nothing from the manufacturer suggesting otherwise. 

What should employers do? 

GMB is clear that the guidance from the World Health Organisation through IARC supersedes any other guidance, and as such glyphosate must be treated as a severe health risk to workers. 

GMB is adamant that the precautionary principle must apply in this case. Employers should be substituting products containing glyphosate with safer alternatives that pose a lesser health risk. 

A number of Local Authorities in the UK have trialled alternatives to glyphosate, and one Council, the London Borough of Hammersmith and Fulham, has replaced it entirely with a product using steamed sugar-infused water. 

There are other alternatives being trilled including flame throwers, strimming, hoeing and vinegar

Where this is not immediately possible, there is an urgent need for anyone using the substance to have the correct Personal Protective Equipment. 

Monsanto’s own internal research concluded that full faceplate masks, waterproof jackets, and coveralls should be used when applying glyphosate. 

Employers will need to review their risk assessments and COSHH assessments to ensure that their health protection regimes are fit for purpose. 

We also demand that health screening is introduced where workers are exposed on an industrial basis. 

This will primarily be anyone spraying weedkiller containing glyphosate industrially, so we anticipate the greatest impact will be on GMB members working for Local Authorities and in the agricultural sector 

What is GMB doing? 

Aside from this briefing, we are working with Unionline to develop a register for all members who may have been exposed to glyphosate at work. 

Being exposed does not mean that a worker will definitely develop cancer, but those workers who are regularly exposed are likely to be at higher risk, so information on their work history is important if illhealth occurs and a claim needs to be made. 

Outside of this, we will continue our campaigning for an outright ban on glyphosate. We will develop a standard letter that members can use to register their concerns and to demand that glyphosate is substituted for other less harmful alternatives. 

What can GMB Health and Safety Reps do? 

Once the Glyphosate register is operational, all members who believe they have been exposed are strongly urged to register their details

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