s Wage and Hour Division (WHD) inadequately investigated complaints from low- and minimum-wage
workers alleging that employers failed to pay the federal minimum wage, required overtime, and failed to issue a last paycheck.[26]
Chao's tenure as Labor Secretary saw two mine disasters for which she was criticized. Twelve miners were killed in the Sago Mine disaster on January 2, 2006, and three rescue workers died in the Crandall Canyon Mine disaster on August 6, 2007.