Many broken bones are missed by x-ray.
Underfunding for a decade had led to "a population with serious unmet needs," a top doctor says.
Plans to fund some have been put on hold due to COVID-19.
Hospice and aged care nurses are paid around 20 percent less than their DHB peers.
Laura Fergusson Trust in Greenlane received about $11 million in funding a year.
The Nurses Organisation said talks with employers have dragged on all year.
"As medical professionals we are not only frustrated we are angry at this point."
Industrial advisor Chris Wilson says it's important so they can maintain staff and quality care.
The researchers say it's an "exciting opportunity" to improve the lives of millions.