-- The court overseeing multidistrict litigation over Wal-Mart Stores Inc.'s wage-and-hour practices denied a bid to certify classes of employees from four states, writing that resolving the plaintiffs' claims would necessitate particularized inquiries into their respective allegations. On Friday, U.S. District...

In the multidistrict wage-and-hour litigation against Wal-Mart Stores Inc., plaintiffs from four states say that a key Wal-Mart expert witness's testimony is irreparably biased and should be tossed. The plaintiffs filed a motion on Monday in the U.S. District...