Check out this chart at Washington Post.

As Dylan Matthews writes: "Interestingly, many blue collar professions—such as cafeteria work, security guard work, and warehouse stock clerking—are the most egalitarian in their compensation, while female white collar professionals like doctors, stock brokers, and insurance saleswomen face among the worst pay gaps around."

The one that surprises me is "retail sales." Women earn 64.3 percent what men earn in that field.