Fixed-term contract not renewed
The legal mechanic
ERA 1996 s.136(1)(b) deems expiry of a fixed-term contract without renewal to be a dismissal. The cause of dismissal determines whether it is a redundancy dismissal: did the role itself disappear, or did the funding end, or did the project conclude. If yes, the redundancy formula in s.162 applies in full.
Aggregating rolling contracts
A short gap (typically under 4 weeks) between two consecutive fixed-terms preserves continuous service under ERA 1996 s.212. So a series of 6-month or 12-month rolling contracts with the same employer can aggregate to 2 years and trigger statutory redundancy on non-renewal.
Unfair dismissal alongside redundancy
You can claim both. The unfair dismissal claim challenges whether the non-renewal was a fair redundancy (was a fair procedure followed, was a suitable pool considered, was redeployment offered). The redundancy pay claim seeks the statutory figure. Both routes are time-limited: 3 months for unfair dismissal, 6 months for statutory redundancy.