In July 2020 some employer assisted work visa holders had their visas extended for six months. Yesterday Immigration New Zealand announced that partners and children holding a visa based on their relationship with those work visa holders, will also have their visas extended. Some conditions apply.
For example, if an Essential Skills work visa holder held a work visa which originally expired on 1 September 2020 and this was extended to 1 March 2021, their partner holding a Partner of a Worker work visa to 1 September 2020 will also now have their visa extended to 1 March 2021.
Read more about the announcement here: https://www.immigration.govt.nz/about-us/media-centre/news-notifications/work-visa-extension-aligned-for-partners-and-dependants