NSW wage boost 'insult to injury': unions

NSW public sector unions could press ahead with industrial action after a goverment pay offer. (AAP)

NSW public sector workers will get a three per cent pay rise in the budget but it may not be enough to stop further industrial action.

Premier Dominic Perrottet flagged a three per cent wages boost for the next financial year with another 3.5 per cent the following year, depending on productivity gains.