New Zealand advocates have issued a blunt warning about Australia's plans to drug test welfare recipients.
"The end result is that families and children end up going without food," said Ricardo Menendez March, poverty coordinator at Auckland Action Against Poverty.
The Kiwi model is different to the Australian proposal, a trial which would randomly test recipients of Newstart and Youth Allowance.
In New Zealand, drug tests are not mandated but can be asked of jobseekers looking for employment in fields where the employee's ability to do their job can impact on the safety of others.
Those that fail tests can be cut off from benefits for up to 12 weeks.
In the year to June 2018, 47,115 Kiwis were referred to jobs that required drug tests. Only 170 people failed, a rate of less than 0.5 per cent.
The Australian government hopes to conduct two-year trials in three different sites, estimating a one per cent failure rate in 5000 tests.
Mr Menendez March said the test "disincentivises people from getting help and the financial penalty imposes more harm by making them lose income, potentially making them homeless".
"People with an addiction that lose their income will resort to cheaper, more harmful drugs and they will resort to crime to address their addiction," he said.
The Morrison government on Wednesday reintroduced to parliament legislation to enable 5000 tests of Newstart and Youth Allowance recipients.
"The community has the right to expect that taxpayer-funded welfare payments are not being used to fund drug and alcohol addiction," government minister Ben Morton told the lower house.
People who test positive for illicit substances would be moved onto cashless welfare cards, and anyone who fails twice would be offered drug counselling.
The two-year trial would take place across three trial sites.
Kings Cross Safe Injecting Room medical director Dr Marianne Jauncey said money spent on the tests would be better spent funding treatment.
"We've never punished anybody into getting better," Dr Jauncey said.
Mr Menendez March said the Kiwi experience suggested once the policy was introduced, fears of being seen as "soft on drugs" could prevent parties from rolling it back.
"Once it gets implemented, no matter who speaks against, there may not be the political will to overturn the sanction," he said.