"If it's good enough for one, then it's good enough for everyone," she said.
Mrs Raukawa-Tait said drugs featured in the lives of a number of beneficiaries she knew and the drug-free message still needed to get through to some.
Tests weren't required by all employers but they were becoming more common.
"I think if people are serious about wanting a job then they have to understand that this might be the adjustment they have to make in their lives to become drug-free," she said.
"If you've got a family to look after, maybe start to put them first and think 'well, being drug-free mightn't be such a bad idea after all'."
Nationwide, there were 31,791 referrals for drug-testable positions last year with 55 sanctions for failing a drug tests, according to MSD figures.
Sanctions for failing a drug test made up less than 0.5 per cent of the 15,000 total sanctions applied for working age beneficiaries last year.