Beneficiaries having children will be targeted from today by new work obligations and - for them and their daughters - contraception grants.
But the Auckland Single Parents' Trust is concerned about the realities for women who are single-handedly raising a family, saying balancing work and small children is difficult even when there are two parents.
"We're going to find a lot of people breaking down. We're just going to be prepared for a bit of chaos," said the trust's organiser, Julie Whitehouse.
"We really do want society to adjust for mothers to get to work - [most] women don't want to be on the benefit - but there's got to be some common sense here."
The policy will introduce obligations of part-time work for single parents whose children are all older than 4, and full-time work for those with children older than 13.