It's hard to know precisely without knowing what those longer hours might look like.
I'll give you an example. Right now we begin the sittings on Mondays at 11 o'clock. If we started at 10 o'clock or 9 o'clock, that would have no impact, because people are here anyway to work a full day. Sitting an extra half-hour or an hour later in the day—minimal impact again. People are here, largely, for shifts that end near the adjournment time anyway, and that can be adjusted. People could be asked to come in a little later and stay a little later. We already do that in the journals branch, for example.
My initial instinctive feeling is that it wouldn't have a huge impact.