The United States is becoming an increasingly diverse nation, but progress in the workplace has been a bit slower. On one side, there are companies like Xerox, which have gone well beyond making a concerted effort to hire minorities and women…But for every Xerox, there are many other companies that do little more than pay lip service to the issue of diversity, says Robin Ely, a professor of organizational behavior at Harvard Business School... Still, experts say that most companies, particularly the Fortune 500 firms, are trying to move beyond the legally mandated minimum when it comes to affirmative action and anti-discrimination efforts...the U.S. Equal Employment Opportunity Commission reported a record number of discrimination charge filings in fiscal 2008