It has been six years since former Hydro-Electric Commission employees exposed to toxic chemicals enlisted government help to fight for compensation.
Former Braddon Greens MHA Paul O'Halloran raised questions around compensation for these workers in June 2013.
In the June 5 estimates committee on workplace standards Mr O'Halloran asked: "Can you confirm whether state employees would have been exposed to [2,4-D and 2,4,5-T] chemicals? ... Should there be a case that [if] Tasmanian workers have been exposed to toxic chemicals, does the state take responsibility?"
The topic was raised again on June 26, when Mr O'Halloran spoke about former HEC workers who had been exposed "to the toxic chemicals 2,4-D and 2,4,5-T while they were clearing under high-voltage power lines".
"These men are now very unwell. In very hot and sweaty conditions 20 or 30 years ago they were backpacking these chemicals and spraying vegetation," he said.
"They are claiming, and have some medical evidence to support them, that their current situation is as a result of the spraying of these toxic chemicals."
On November 21, 2013, Mr O'Halloran introduced this chemical exposure as a Matter of Public Importance, saying "a real wrong has been done here in Tasmania over recent decades".
Bryan Green, who was the Energy Minister at the time, wrote to the state's three electricity businesses asking them for records on employee chemical exposure claims.
TasNetworks has started speaking with impacted employees, some of whom still work for the organisation, about chemical exposure between the 1960s and 1980s.
WorkSafe Tasmania is working with TasNetworks and the state government in examining "former Hydro Electric Commission and Tasmanian State Service employees' application and use of a certain herbicide for vegetation spraying", chief executive Mark Cocker said.
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