Eric Simons, from Chicago, slept on sofas, ate free in cafeterias, and used his days to work on his own start up company, offering teachers the chance to share lesson plans.
Other employees assumed he was a colleague and admired his strong work ethic. Simons would already be in the gym when they arrived at 7am, and he always stayed latest in the office at night.
Simons told technology website CNET: “There were so many people going in and out each day. They’d say, ‘Oh, he just works, here, he’s working late every night. Wow, what a hard worker.’”