Some part-timers say they enjoy working at Walmart, but went on strike over the holiday season, saying they aren't able to work more hours or are treated unfairly by the company.
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"When you're talking about our store associates and rising through the ranks every year, we promote about 170,000 people to jobs with more responsibilities and higher pay," Hargrove said.
The company also said its employee turnover rate in the U.S. is less than the industry trade average: 37.2 percent versus 43.6 percent, respectively.
Walmart said there are 15,000 to 50,000 job postings at the firm, depending on the time of the year.
Dakduk said he hopes corporate America follows Walmart's examples with more high-profile initiatives.
"If someone's unemployed, that's an issue," Dakduk said. "There are a lot of homeless veterans and a lot of veterans that are not employed. It's certainly a step in the right direction, and I think that's important to acknowledge."