Equal Pay for Equal Work

SCOTUSBlog reports the following (and it's one of many).

Rewriting a law to overcome a narrowing by the Supreme Court, Congress on Wednesday finished passage of a bill that will make it illegal each time an employer writes a paycheck that gives some workers less than others, because of race, sex, disability, religion or national origin. The so-called “Lilly Ledbetter Fair Pay Act of 2009″ has been assured of approval by President Obama, and, when signed into law, will apply to bias claims that were in court as of May 28, 2007, or after that date. The text of the new law, Senate bill 181, in final form, can be found here.

So now the questions begin.

Clearly the act applies to current employees receiving a current paycheck. But, what if you've just discovered the issue, you've retired, and your retirement check is based on your former employment? Is there an argument that your retired pay check should reflect equal pay?