New South Wales farmer Ross Wild was diagnosed with Hodgkin's Lymphoma last year after using the weedkiller Roundup on his farming property near the border of NSW and Victoria since 1976, ABC reported.
He says long-term exposure to Roundup's active ingredient, glyphosate, was to blame, ABC said.
Reuters could not immediately trace contact details for Wild.
A Bayer spokesman said the company was aware of media reports regarding a statement claim about glyphosate but had not yet been served a writ.
"We have great sympathy for any individual with cancer, but the extensive body of science on glyphosate-based herbicides over four decades supports the conclusion that Roundup does not cause Non-Hodgkin's Lymphoma (NHL)," he said in a statement.
The spokesman said glyphosate had been extensively studied by scientists and regulators, and research had confirmed it was not carcinogenic.
"We firmly stand behind the safety of glyphosate-based products, and as a company devoted to life sciences, assure Australians that their health and the environment are our top priority."
Wild will be represented by managing partner Tony Carbone of Carbone Lawyers, according to the report. The firm did not immediately respond to an email requesting comment.
Glyphosate is the world’s most widely used weedkiller. Monsanto’s Roundup was the first glyphosate-based weedkiller but is no longer patent-protected and many other versions are now available. Bayer does not provide sales figures for the product.
The company said in a statement that as of July 11, it faced lawsuits brought by roughly 18,400 U.S. plaintiffs who say glyphosate caused cancer.
A trial over the weedkiller scheduled to begin on Oct 15 in Missouri had been delayed, Bayer said this month.
The lawsuit is the latest of several to be put on hold as mediator Ken Feinberg tries to negotiate a settlement between the company and US plaintiffs after a California jury in August last year found that Monsanto should have warned of alleged cancer risks.
