After Massachusetts last month ordered Wal-Mart to stock the “Plan B” emergency contraception pill, Wal-Mart this past Friday announced that, effective March 20, all Wal-Mart pharmacies nationwide will carry emergency contraception, reversing the companies previous policy– part of a trend of Wal-Mart changing its national policies in response to state laws.

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And in many cases, workers denied overtime or minimum wages by Wal-Mart have used more favorable state labor laws to bring lawsuits against the company– putting pressure on the firm to improve conditions.

Full Story: Nathan Newman.