Although the numbers prove that women make .75 less than men, there is further information that must be considered. Typically, when men enter into college, they major in subjects which will yield higher paying incomes. Such as, engineering, pre-medicine, math, business, and information technology. Women tend to major in subjects which have careers that are not as high paying. For example, education, social sciences, psychology, and nursing to mention a few. So, when these men and women graduate, their starting salaries differ, and the salary gap begins. An engineer's starting salary out of college might be $60,000, and a social worker's starting salary might be $35,000. Both field require college degree's, but the starting salaries differ.
Another reason the salary gap exists, is because women tend to take time off to raise a family, or scale their work down to a part-time basis. This was more prevalent 10 years ago, however, the numbers still reflect a salary gap. Today, women are staying in their careers on a full-time basis, while raising a family.
The law that protects women from being discriminated in the workforce, in regards to salary is still important, but we must also look further into why the salary gap exists. It's more about the career choices women may make when entering college, and not as much as discrimination. A man entering the field of social work would make the same as a women entering the field. If this were not the case, than gender discrimination would exist with this example.