But Odyssey House chief executive Philip Grady said this would not be enough if many of the 700 people undergoing assessment needed more than a six-week group programme.
"Once you assess someone and find out there is a problem then there need to be some services that come in behind that to support a person to address the problem," he said.
"We have a three-month waiting list. This is going to cause a strain and waiting times will potentially grow."
Salvation Army Auckland addictions director Captain Mike Douglas said the Government had provided extra funding for referrals from the new Drug Courts but had not yet done the same for beneficiaries.
The new law provides that people with recognised addictions, or taking drugs such as methadone on treatment programmes, will not be asked to sit drug tests.
But members of the Counties-Manukau Alcohol and Other Drugs Consumers Network said they could be caught up in the general pressure from the welfare reforms to look for work too soon.
A report for a local agency in February found that work was "strongly associated with wellbeing, social inclusion and recovery" - but also that "for others, work can jeopardise recovery".
One recovering addict, who was a successful businessman before a nine-year addiction to methamphetamine, said it took time to rebuild self-esteem.
"You are grieving and dealing with shame and remorse and loss," he said.
"I'm on anti-depressants, which is a big help because long-term drug use affects your serotonin and dopamine levels and makes it very hard to get back on an even keel and see the bright side of life."
Another man feared bosses and workmates might target him if he returned to work.
Everyone in the group said it was hard to get jobs because of suspended driver's licences and criminal convictions while they were addicted.
"It's all very well telling someone with depression and anxiety to go on to Jobseeker Support. The fear that that puts into people is quite detrimental," said group co-coordinator Rachel Maloney.