Walmart has been added to a class action suit by workers who don't actually work for Walmart.

Tesco, the U.K. retailer, started opening up a new kind of grocery store in the U.S. five years ago. More than a convenience store, almost a supermarket, Fresh & Easy hasn't found its place in shoppers' habits.

Lawyers say Walmart can be held accountable for working conditions, despite contracting out operations and staffing.

Protests put Walmart in the public eye, and legal strategy targets Walmart as industry giant.

A growing number of U.S. companies — including Wal-mart, Sears, Disney, Dickies, and hip-hop star Sean Comb's clothing line — have been linked to the deadly garment factory fire in Bangladesh.

Walmart's flexible supply chain depends on low-wage "permatemp" workers.

Critics say a system of contracting out warehouse operation and hiring allows discounters to avoid responsibility for workers.

Wa-Mart, the nation's largest retailer, had impressive Black Friday sales, including more than 1.3 million televisions. Outside some stores, employees and supporters picketed for higher wages and better benefits.

Walmart workers will walk picket lines outside stores on Black Friday to protest the retail chain's low wages. Walmart, with more than a million employees, helps set pay levels for the retail industry.