Walmart Stores ( WMT ) holds its annual shareholder meeting today and one big issue is a proposal to tie management pay to keeping the shelves well stocked. The company has come under heavy criticism for declining sales, tied in part to empty shelves. Walmart will also face a challenge over bribery charges at its operations in Mexico, as well as its treatment of workers both here and at factories overseas. A majority of the shareholders at Nabors Industries ( NBR ) rejected the company's executive compensation plan and voted to oust two directors. But the oil services company says it won't accept the resignation of those directors. An advisory panel has recommended that the Food and Drug Administration ease restrictions on the GlaxoSmithKline's ( GSK ) diabetes drug, Avandia. The agency had sharply restricted use of the one-time blockbuster three years ago because of concerns that it increased the risk of heart problems.