The government has committed $14.5 million more over four years for on-the-job literacy and numeracy training.
Employers can apply for support from the existing fund to hire specialist trainers to deliver approved courses in the workplace.
The new money means the government will contribute nearly $45 million to the fund up to 2022.
Prime Minister Jacinda Ardern said the extra funding was part of ongoing work to lift productivity.
It was expected to help another 1500 workers, on top of the roughly 3500 already receiving training.