The EEOC is encouraging Walmart to come to a “just resolution” with 178 female workers who have alleged that the firm discriminated against them, due to their gender. The allegations are primarily concerned with pay and promotion. The agency found reasonable cause to believe that Walmart was paying women less than their male counterparts. This is not an isolated event- in 2011 around 1.5 million women attempted to file a class action discrimination suit against the firm and there are at least 1,600 gender discrimination complaints similar to this one pending at the EEOC.
See "Walmart likely discriminated against female workers, U.S. agency says", Daniel Wiessner, Reuters, September 17, 2019