The jet fleet is a different contract, to the link operations.
NZALPA and the FANZP both have a strict seniority system in the individual airlines, Eagle, Air Nelson, Mt Cook and the jet operation. The jet fleet is the only one that has multiple types.
In the jet fleets you start as a B777, B767 or shortly a B787 SO, there are also a small number positions as B733 FO but this aircraft is being retired and exited by 2015. The SO and B733 are the entry positions and there are NO exceptions.