Study: Closing gender wage gap would add 7% to GDPThe study assumed that the monthly wage gap would drop from its 2014 level of 39% to "just" 22% by 2039, which would lead to the 7% bump in the economy.Ultra-Orthodox women work at Matrix Global, a hi-tech company, in the West Bank Jewish settlement of Modiin Illit April 3, 2011(photo credit: REUTERS)