The member is talking about the rate at which the benefit is phased out among those who are earning a bit more money. The current working income tax benefit is phased out at about 15%, I think, for both types of families that are considered. The new Canada workers benefit reduces that to about 12%, I believe. That's an improvement of three percentage points. I think that's important, because economists think that does matter a bit for people's decision of how much to work.
However, most of the evidence on this kind of benefit focuses a bit more on whether or not you get a cheque at all versus the small benefit that is clawed back at the margin for those who are in that range where it's clawed back. For me, the idea that we reduce the marginal effective tax rate from 15% to 12% is an advantage. The member is correct that we're now applying that over a bigger range of income, and that's a bit of a trade-off that we have to consider.