Lawyers representing three Tennessee women filed a class-action lawsuit against Walmart claiming the retail giant gives unequal treatment to female employees. Evidence in the case shows that women who hold salaried and hourly positions in Walmart stores in the region that includes Tennessee and parts of Alabama, Arkansas, Georgia and Mississippi, have been paid far less than men in comparable positions, although on average, the women have more seniority and higher performance ratings than men. The complaint, filed in U.S. District Court for the Middle District of Tennessee, is the third regional discrimination case lodged against Walmart since the U.S. Supreme Court reversed a lower court ruling on a national class action against the retailer in June of 2011.