If, as MMSOBGYTAST suggests, the ATIS didn't mention any WIP then there is a bit more to this than a simple failure to read the NOTAMs. For those not familiar with it, NZAA has three sets of Jepp charts - white, green and yellow, depending on whether you've got normal ops (full length on 05R/23L), alternate runway ops (05L/23R), or reduced length on 05R/23L. The ATIS will invariably state which set of charts to use, even when it's just a case of 'Normal operations, use Jeppesen white pages'. So if that's what the ATIS said, then it would not be unreasonable for the crew to expect full length regardless of what the NOTAMs said (after all, it's not uncommon to see an ILS notam'd out somewhere only to arrive there and find it's working normally).