The Public Service Commissioner is bewildered as pay talks with primary teachers drag on. 

Their union —the NZEI— has turned to the Employment Relations Authority after three days of talks failed to resolve disputes over cost-of-living increases and recognition for major curriculum changes. 

The union's rejected three offers, with teachers missing out on around $50 extra per week since January. 

Sir Brian Roche told Mike Hosking it's disappointing teachers don't know the details of each offer. 

He says the last time teachers were asked was in December, and he doesn't know what the percentage of the vote was. 

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