Layoffs were at company headquarters in Bentonville, Ark.

Reductions part of retailer's commitment to lowering prices and investing in technology upgrades.

Company sees effort as key to winning at retail.

Representatives of Cargill, Walmart and other firms attend a private ceremony at the White House.

The CEO and chairman to pursue other ventures.

Jeffrey Davis succeeds Brad Richmond, who will retire after 32 years with the company.

Retailer passes some costs on to vendors.

Whole Foods’ value-focused retail chain is scheduled to open in 2016.

The retailer is working to develop a frictionless business model that includes its physical and digital assets.

Pork producer ceased using antibiotics two years ago.