While Donald Trump zeroes in on Facebook and Google, Bernie Sanders has for months been waging war against another tech giant. In statement after statement, the progressive senator from Vermont has decried Amazon, claiming that the $954 billion company doesn’t pay enough workers a living wage—especially those who toil in its more than 100 fulfillment centers across the country. Many of the attacks have been personal: “It is completely unacceptable that ordinary Americans should be subsidizing the wealthiest people in the world like Jeff Bezos when they pay their employees such inadequate wages,” he tweeted earlier this week. “Count to ten,” he wrote in another tweet. “In those ten seconds, Jeff Bezos, the owner and founder of Amazon, just made more money than the median employee of Amazon makes in an entire year.” Not content to bludgeon the company from the confines of Twitter, Sanders’s office has also appealed directly to Amazon employees: “Have you used public assistance, such as food stamps, Medicaid or subsidized housing, in order to make ends meet?” asks a form on his Web site.

By now, these sorts of accusations are commonplace. But Amazon’s response was not. Instead of brushing off the claims with a boilerplate statement or an internal memo, as Bezos did in response to a damning New York Times story in 2015, the company published an entire blog post on Wednesday devoted to debunking Sanders’s claims. In addition to calling his allegations “inaccurate” and ”misleading,” Amazon claimed that the “average hourly wage for a full-time associate in our fulfillment centers . . . is over $15/hour.” In one particularly angry line seeming to insinuate that Sanders is out-of-touch, Amazon wrote, “Sanders’ references to SNAP, which hasn’t been called ‘food stamps’ for several years, are also misleading because they include people who only worked for Amazon for a short period of time.” The company added that it had offered Sanders a tour of its fulfillment centers, and invited its workers to respond with their positive experiences. Its post was later updated to include one worker testimonial.

Amazon’s own claims run counter to dozens of reports of worker mistreatment. In recent years, stories have proliferated about warehouse workers skipping bathroom breaks to keep their jobs; taking home less than the minimum wage; and walking as many as 15 miles a day inside warehouses, while handheld scanners tell management how much idle time they spend between fulfilling customer orders. In Amazon’s Breinigsville, Pennsylvania, warehouse, workers were allegedly forced to work in 100-degree heat, leading some to become dehydrated and collapse. (Amazon eventually installed air conditioners in the warehouse.) Since 2013, according to the National Council for Occupational Safety and Health, seven people have died on the job in Amazon warehouses. (In response to the N.C.O.S. study, Amazon said in a statement that it is “proud of [its] safety record and thousands of Amazonians work hard every day innovating ways to make it even better.”)

So far, the responses to Sanders’s form have told similar stories. “If my aunt wasn’t helping I wouldn’t be able to make it, at least put food on the table,” wrote one current worker in Cleveland, Tennessee. “Was homeless sleeping in the parking lot after I no longer could afford rent,” wrote a former worker in Fort Worth, Texas. “If anyone wanted to experience what a turn of the 20th century American sweat shop might have looked/sounded/felt like,” wrote a former employee in San Antonio, “they [can] look no further than Amazon.”