''These ads are a bit cheeky, but they've got to be — challenging society's ingrained gender norms isn't easy!
''We know that working in a male-dominated field might not be smooth sailing. But if our saucy ads encourage you to consider, or just imagine a career in this industry, we've succeeded!''
The page goes on to explain that 90 per cent of the construction workforce is made up of men, that there is a demand for workers and pay is usually good.
Construction jobs listed include project and construction managers, quantity surveyors, stonemasons, electricians, engineers and builders.
But, a senior lecturer in gender studies at the University of Otago, Rebecca Stringer, said Otago Polytechnic got it wrong. ''It isn't cheeky, it's tone deaf.
''Far more positive and just as likely to attract hits on the website would be something celebrating women in construction.
''Not 'here's some sexism oops only joking, guess what, we're for women in construction'.''
She said safety on worksites would be a more attractive proposition for women interested in the industry.
''Women don't just want to know that there's no sexism, they want unions, they want guarantees of proper work, they don't want precarious work and they want workplace safety. Just like guys do.
''An advertising campaign promoting a commitment to safety and all of its forms — that's deeply attractive to woman looking to work in that industry.''
Otago Polytechnic chief executive Phil Ker defended the organisation, saying it had been running a ''Women in Construction'' campaign to ''address the gender imbalance'' in the industry.
"One element of our extensive Women in Construction campaign is a Girls Girls Girls visual advertisement, which was conceived by our all-female team of marketers as a tongue-in-cheek component of the broader campaign,'' he said.
They understood the advert would be polarising but that it was worth it to get the message across.
"We consider the Women in Construction campaign to have been a success – it has generated 58 study applications as a direct result of digital advertising to date.
However, we regret any offence caused as a result of the campaign content."