For the past two decades, Walmart has repeatedly been accused of compelling workers to perform certain tasks off the clock and has paid numerous fines for those practices. It is often suggested that the retailer is an anomaly, acting more like a fly-by-night sweatshop than a corporate giant. I recently completed a research project showing that, on the contrary, off-the-clock work, denial of overtime pay through misclassification and other forms of wage theft are pervasive in American big business. After digging through court records for much of the past year, I found more than 1,200 successful wage and hour lawsuits against hundreds of the country’s largest employers. These collective action suits have yielded some $8.8 billion in settlements and verdicts in the period since 2000. The same group of corporations have paid around $400 million in fines to the U.S. Department of Labor.