Instead, 80 per cent of the bonus payment value would be added to the staff's base salary.
In ACC's specialist investment area, bonuses remain in line with private and commercial sector remuneration and performance structures.
Last week, it was revealed that a $74 million restructure of the way ACC manages claims had left staff with "overwhelming caseloads" and so stressed they're "dropping like flies", according to a Public Service Association (PSA) union survey.
The aim of the restructure was to increase productivity and make ACC more "client centric", but union members said it's having the opposite effect.