"Plenty of evidence has shown how beer advertising, both in New Zealand and abroad, draws heavily on stereotypical masculine themes and routinely portrays sexist, derogatory and degrading behaviour by men, towards women, as part of beer drinking culture and lifestyle.
"The Tui beer advertisements are a good example - these kinds of representations are a barrier to gender equality and perpetuate concerning attitudes about women.
"That such attitudes are routinely portrayed to sell a product that we know is implicated in violence towards women, and that the ASA has now lowered the threshold around such advertising, is of huge concern."
However, Advertising Standards Agency chief executive Hilary Souter said she was confident the removal of the requirement would not result in a flood of sexist commercials.
The requirement for alcohol advertisements not to depict "unduly masculine themes" was not a significant area of complaint and the language was quite dated.
"Because those words have been taken out, I don't think you'll see a significant change in advertising all of a sudden becoming more 'blokey'," Mrs Souter said.
Any discrimination or degradation toward an individual or group was still covered by the Code for People in Advertising, she said.
But Ms Pierce said it was important that the "shall not depict unduly masculine" requirement was reinstated because it was mostly beer advertisements which idealised masculinity.