Dollar Stores Invest in Retail Expansion

Dollar-store chains, which benefited from the economic downturn as shoppers searched for bigger bargains, are continuing their expansion, making a risky bet as the economy begins to perk up. Dollar General Corp., the largest with more than 8,800 outlets in 35 states, plans to add 600 stores this year. Rivals Family Dollar Stores Corp. and Dollar Tree Inc. are also adding stores.