NPR: But not all of the difference be explained by choices such as these. And some of the gap could be due to simple discrimination, Ana Llena-Nozal, an economist at the OECD, told me.One other detail worth noting: The jobs where the gap is biggest pay more, on average, than the jobs where the gap is lowest. The average weekly pay is $1,087 for jobs where the gap is biggest, and $773 for jobs where the gap is smallest.