Democratic U.S. presidential hopeful Bernie Sanders on Wednesday told Walmart Inc. shareholders and top executives that the world's largest retailer should boost the "starvation"-level wages it pays its workers and stop fueling income inequality.

Speaking at Walmart's shareholder meeting, the U.S. senator said: "Despite the incredible wealth of Walmart's owners" the company pays "starvation wages."

He presented a shareholder proposal at the event asking the company to give hourly employees a seat on its board and raise base wages to $15 an hour.