Wal-Mart Stores will dole out pay increases to about 1.2 million hourly workers.

Smartphone checkout has had a sluggish start; will Wal-Mart Pay provide a boost?

The world's largest retailer has already said to expect lower earnings next year.

The company is reinventing itself, at a high cost

Customers don’t like waiting, and the country's largest retailer knows it.

The company is fighting back against the problem of lost, spoiled and stolen inventory.

Will the costs of Wal-Mart's much-publicized pay hike hurt its bottom line?

Average hourly wages will rise to $9.90 for 1,500 locations the company runs directly.

Call it "The Wal-Mart Effect."