BENTONVILLE, Ark. -- As Wal-Mart Stores Inc. opens about 150 new or expanded stores in the U.S. in 2009, the company expects to hire about 22,000 people for new positions.

Those positions include plenty of cashiers and stock clerks, but the world's largest retailer will also be adding store managers, pharmacists and personnel workers.

Wal-Mart is holding its annual shareholders meeting Friday, and employees from its stores around the world are spending the week in Bentonville at company headquarters.

Wal-Mart, still the target of criticism from union-backed groups for its pay and benefits, has improved its health insurance coverage and opened it to full- and part-time employees. The company said 94 percent of its employees have health coverage, either through Wal-Mart or another family member.

Other employee benefits include a 401(k) plan, stock purchases and discounts for workers making in-store purchases.

The company has touted its generic drugs program in which Wal-Mart is selling $4 prescriptions for many popular medicines. Competitors have matched the price for some prescriptions.

Earlier this year, the company shared more than $2 billion with its workers through bonuses, profit sharing and payments into the company 401(k) plan.

Wal-Mart has more than 2.1 million employees in the U.S. and abroad.

The company had sales last fiscal year of $401 billion.