I'm happy to see the gender pay gap as an issue political parties are trying to outdo each other on; that shows they see it as an issue (which it is, duh), and are trying to compete with one another to attract voters. The Coalition has traditionally paid lip service to this issue but it is now trying to catch up to Labor. This article contains a link to Labor's announcement on the issue which contains measures that could address the issue of women working in low paid issues s...uch as child care and aged care.
A lot of the discussion about the gender pay gap tends to focus on pay discrepancies between men and women performing the same work in white collar jobs; but a huge issue is the sectors that employ overwhelming numbers of women who are all on low wages. I don't think anyone who has had anything to do with child care or aged care would dispute the workers are under paid; it's how to address pay across a whole industry that is the difficult question.