An information session on Monday is expected to hear details about the just-filed class action against Monsanto Australia Pty Ltd.
The class action follows further scientific studies between exposure to Roundup and the development of Non-Hodgkin's Lymphoma.
The meeting is at Rydges Port Macquarie, commencing at 4pm.
Since 2015 glyphosate, the active ingredient in Roundup, has been categorised by the International Agency for Research on Cancer as a group 2a carcinogen or a chemical that "probably causes cancer" in humans.
LHD Laywers filed the class action in the Federal Court on November 27, 2019.
Matthew Berenger says Monday's meeting will provide information for clients and anyone interested in the case.
About 100 litigants are part of the class action, while another "30 or 40 are currently considering joining".
"I expect that figure will rise dramatically as more people become aware of this class action," Mr Berenger said.
"Monday's meeting will give people an understanding of what the class action is about and, potentially, there could be other people wanting to hear about it.
As well, we want to answer any questions that people may have on this case. Roundup is such a utilised product in the community.Matthew Berenger
"We want to give everyone an understanding of the case and what is happening generally.
"As well, we want to answer any questions that people may have on this case," he said. "Roundup is such a utilised product in the community."
Roundup has been available to purchase in Australia since 1976 and is used for both domestic and agricultural purposes.
In a landmark US court case in 2019, a judge awarded a Californian couple $2.9 billion in damages after finding Roundup caused their cancer. The damages were later reduced to $124 million.
A number of councils across Australia have reconsidered using Roundup as part of their weed management program.
Port Macquarie's Joy Mills, whose husband Lawrie Stark passed away from Non-Hodgkin's Lymphoma in 2016, has joined the class action but says she is not motivated by any potential payout.
"I wasn't looking at this for the financial benefit but I made contact with the lawyers because I wanted to tell Lawrie's story," she said.
"If something can come out of this and we can stop other families being devastated by the death of a loved one, that would be wonderful.
"Hopefully we can get the message out into the community about the meeting and get other people involved.
"Glyphosate is a carcinogenic product and I feel this product needs to be taken off the shelves and have large warning signs placed on it indicating it contains carcinogenics.
"There are already a number of countries around the world that have banned products (containing carcinogenics).
We can only hope that Lawrie's death may help reduce the instance of losing a loved one to Non-Hodgkin's Lymphoma.Joy Mills
"We can only hope that Lawrie's death may help reduce the instance of losing a loved one to Non-Hodgkin's Lymphoma.
"So many people living and working in our rural communities would be using these products," she said.
Mrs Mills, who remarried about 12 months ago, says Lawrie had worked in the banking industry his entire life before they retired to Port Macquarie-Hastings in 2003.
They purchased a four hectare property with "fabulous gardens", spending six "wonderful years" living their retirement.
"Lawrie would go out every day, spraying the surrounding areas with Roundup," Mrs Mills said.
He was first diagnosed in 2009 before undertaking treatment with an oncologist and hematologist in Port Macquarie and Royal Prince Alfred Hospital.
The couple decided to sell up and move into Port Macquarie the following year.
"He continued using Roundup, despite there being no warnings on the labels," Mrs Mills said. "We used to buy it straight from the shelf."
In November 2015, Mr Stark's health was deteriorating and his specialist diagnosed acute myeloid leukemia. There was no cure.
"He died just one month later in January 2016," Mrs Mill said.
Monday's meeting is at Rydges Port Macquarie and will commence at 4pm.
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