A potentially costly class-action lawsuit accuses Wal-Mart of conspiring to limit medical care for injured employees in a bid to save money, according to The Wall Street Journal. The lawsuit alleges that retail chain broke state and federal laws by conspiring with Concentra--which operates workplace clinics--and insurer American Home Assurance Company to violate a Colorado worker's compensation law that bars companies from dictating medical care for workers hurt on the job. Lawyers for Wal-Mart, Concentra and American Home deny the allegations. Article