NICOLA WILLIS (National): I want to return to a line of questioning that other members have pursued, which the Minister hasn't commented on in detail yet. I want to give him the opportunity to do so. It relates to exactly how these threshold amounts were chosen for this bill. I think the Minister has done a good job of explaining the principle that is applied, which is that the minimum family tax threshold is adjusted to reflect the changes in the benefit rates and abatement thresholds to ensure that those families who are in work are always guaranteed to get more income than those families who are not in work. And "in work" is defined as a single parent working at least 20 hours a week or both parents combined working 30 hours a week. 