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25. Susan Chambers
Susan Chambers
EVP, Global People Division
Wal-Mart (WMT)
Previous rank: New
Age: 51

The recruitment, training, and retention of the largest private workforce in the world (two million) falls to Chambers, who began her career at Wal-Mart in 1999 after 14 years with Hallmark. That puts her at the center of a contentious debate about Wal-Mart's pay and benefits, but the chatter has quieted somewhat since Wal-Mart overhauled its health plan this year. The stock is up 33% over the past year.

NEXT: Charlene Begley
Last updated October 16 2008: 10:16 AM ET
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