A few months back there was a post here dispelling the myth that women make 76 cents for every dollar a man earned. I have most of the information behind that post already, but if I remember correctly, it stated somewhere on there that women only work about 3/4 the total amount of hours, annually, that men do. I need to find the citation for that statistic as it's not easy to find what you're looking for on the Bureau of Labor statistics page. Thanks!