Women work on average 50 minutes more a day than men, data from the WEF's Global Gender Gap report suggests.
The report says the prevalence of unpaid work burdens women and estimates that economic inequalities between the sexes could take 170 years to close.
The gap in economic opportunity, the WEF says, is now larger than at any point since 2008.
Nearly a quarter of a billion women have entered the global workforce over the past decade, the report says.
