From today, liaison officer Cathy Matthews, of Dunedin, will do 20 hours a week, rather than 40 hours.
Also, an administrative position was cut from 10 hours a week to five.
Mrs Matthews said this meant fewer visits to clients, and less community education and awareness work.
Resources would focus on advocacy for clients, who would be expected to travel more because of the cut in home visits.
"We've cut it back as far as we can."
Mrs Matthews said the whole community sector was finding it increasingly difficult to source money for wages.
"Talk to anyone, they are all noticing ... the funding side of things is tough."
She hoped the association's financial situation improved once charitable funding grants were announced in the spring.
Education and awareness work was important because brain injury was so poorly understood by the general population.
Cutting it risked increasing the stigma around brain-injured people, which increased the demand for personal advocacy.
Brain Injury Wellington has warned it might have to close because it has run out of money, largely due to a drop in charitable grants, Radio New Zealand reported during the weekend.
