The high-powered working group has been tasked with making recommendations to overhaul the welfare system to make it fairer. That is likely to include the removal of the most punitive benefit sanctions and could include changes to abatement rates - the reduction of beneficiaries' payments when they earn more money.
The Human Rights Review Tribunal made a declaration yesterday on a claim brought by Waikato woman Maree Hennessy.
Hennessy was working part-time while receiving a sole parent benefit when she had an accident at work in 2000 which forced her to stop working completely in 2002.
ACC eventually accepted liability to pay compensation for lost salary between 2002 and 2010. It owed her around $89,000. But because Hennessy received welfare payments over the same period, ACC only paid her $576.
The rest went to the Ministry of Social Development because of a law which led meant it had to deduct the ACC payments from her benefit income "dollar for dollar".
If the payments had come from a source other than ACC, she would have received around $40,000 of the total - after abatement.
For that reason, the tribunal declared the law was inconsistent with the right to be free from discrimination. MSD did not oppose the declaration.
Hennessy said the dollar-for-dollar abatement caused years of severe financial strain for her and her family.
"I was an injured, unemployed single parent, with almost no access to legal help, trying to fight a legal battle," she said.
"I felt I was being treated unfairly and I took offence when it became obvious that governments have been gaining from the losses of injured beneficiaries over the years.
"If the law treated earnings-related compensation as 'income' then there would be no issue. I think people would be surprised if they realised a beneficiary's working income is not protected."