Walmart Inc. is cutting hundreds of corporate roles in a restructuring effort, according to people familiar with the matter, a week after the retail giant warned of falling profits.

The retailer began notifying employees in its Bentonville, Ark., headquarters and other corporate offices of the restructuring, which affects various departments including merchandising, global technology and real-estate teams, the people said. Around 200 jobs in total are being cut, said one of these people.