"EEOC charges were filed by 1,975 Walmart women before the deadline"
Why?
From the OP:
"Managers ... have the ultimate authority whether, and by how much, to adjust the pay of all hourly employees, the plaintiffs wrote in early March. They "have long known about gender disparities yet have failed to take remedial action."
From a previous article:
Wal-Marts numbers] are not in question.
Women comprise more than 65 percent of hourly employees, but only 34.5 percent of managers. This is significantly different from similar retail chains, in which women hold 56.5 percent of management jobs. It takes women on average 4.38 years to rise to a management post at Wal-Mart, but takes men only 2.86 years. Of 41 Wal-Mart regional vice presidents, only five are women, and only 9.8 percent of Wal-Marts district managers are women. Wal-Marts internal documents acknowledge that they are far behind the rest of their field.
snip---
Certainly, there has been some blatantly sexist behavior among Wal-Mart managers, such as management meetings in which men called their female colleagues little Janie Qs. But mostly, Wal-Marts system runs on silence. Silence about what exactly are the criteria for management positions; silence about the additional subjective criteria that individual managers apply for promotion; silence about the actual availability of management positions; silence about how you decide whether to give an employee a raise of 10 or 25 cents per hour. Male managers fill all that silence, the plaintiffs lawyers and expert witnesses said, with subjective decisions that are often influenced by stereotypes.
*sigh*