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Carol Calkins, a regional partner in Dallas for PricewaterhouseCoopers and a single mother of two, knows what it’s like to be a “supermom.”

That’s why the company selected her to help lead its Diversity Work-Life Quality Champions Group.

The group is one reason PricewaterhouseCoopers was named one of the top 100 companies for working moms in a recent issue of Working Mother magazine.

Financial services companies, including four of the Big 5 accounting firms, made up more than 20 percent of the list, far outpacing any other industry.

Bank of America, Bank One, Chase Bank, Ernst & Young, Arthur Andersen and Deloitte & Touche also made the list.