San Francisco's largest garment factory has been shut down after investigations showed that it operated without a license and had refused to pay its 200 immigrant employees for more than three months. In what is thought to be one of Northern California's worst labour violations, Wins of California, which made clothing for customers such as the US army and air force, Kmart, Sears and Wal-Mart, was found to owe its workers at least $850,000 in back pay.