EVP, Global People Division
Wal-Mart Stores
2011 rank: 22
Age: 55
Chambers is responsible for Wal-Mart's 2-million–plus associates (that's roughly on par with the population of Houston), and she reports to CEO Mike Duke. The global ethics office is also under her purview. It is an area of focus as Wal-Mart faces allegations of bribery in its Mexico operations.
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