On a jobsite in Kingsville, Texas, in August 2013, a worker was mixing gypsum concrete in preparation for gypcrete installation on an apartment building. It’s not a particularly taxing job, but he was doing it in direct sunlight. “He wasn’t training or doing anything that involved a lot of lifting or climbing,” says Holly Webster, director of administration at Texas-based KWA Construction, which served as the general contractor on the job. (KWA would not release further information on either the worker or subcontractor.) The man, in his 20s, had just transferred from New Mexico, and he wasn’t used to the heat and humidity of a Texas summer. While he’d had some water that day, he also drank some caffeine-packed energy drinks.