Wal-Mart Probe Follows Decade of Sex Bias, Overtime Suits

A U.S. probe of possible bribery in Mexico by a Wal-Mart Stores Inc. unit to boost store growth follows more than a decade of allegations that the company violated laws on illegal immigrant workers, overtime, gender bias and preservation of evidence in pursuit of larger profits.

The world’s largest retailer has been frequently sued by the government, its own employees and its customers in cases that have also included accusations of corruption, as well as discrimination and destruction of evidence.