The state board that oversees pharmacies voted Tuesday to require Wal-Mart to stock emergency contraception pills at its Massachusetts pharmacies, a spokeswoman at the Department of Public Health said.

The unanimous decision by the Massachusetts Board of Pharmacy comes two weeks after three women sued Wal-Mart in state court for failing to carry the so called "morning after" pill in its Wal-Mart and Sam's Club stores in the state.

The women argue state policy requires pharmacies to provide all "commonly prescribed medicines."

The board has sent a letter to Wal-Mart lawyers informing them of the decision, said health department spokeswoman Donna Rheaume. Wal-Mart has until Thursday to provide written compliance.

Dan Fogleman, a spokesman for Bentonville, Ark.-based Wal-Mart, said the company hadn't heard about the decision, but would comply with any order.

Wal-Mart carries the pill in Illinois only, where it is required under state law. The company has said it "chooses not to carry many products for business reasons," but declined to elaborate.