Very quickly, an hours-based threshold wouldn't work, because we don't have any way to monitor how much an individual works. So you need a dollar threshold.
I think what we've chosen is a very fair and a very low threshold: $6,000. An individual has a full year to make that $6,000. I think it is quite a low and quite a generous threshold. Yes, some people will work a long time to make $6,000, and others will work a short time. There's really nothing we can do about that unless we were to revert to an hours-based threshold, but as I said, that's really impossible to do, just administratively not feasible.