The answer is ....... both! As per a recent study they find that both Men and Women work on average of 7.9 hours per day. This includes both work for pay and work at home.
It is a bit interesting as they studied men and women from all walks of life and from all over the world. They found that in the poorer countries the women work more and in richer countries the men work more.
http://www.slate.com/id/2164268
Let the gender bashing begin........