On a sweltering afternoon in July 2020, Belinda Ramones got a call that her brother was in the hospital. The call was from a woman at the Florida landscaping business that he had joined that week, the Davey Tree Expert Co., Ramones said. By the time she arrived, she said, “My brother was swollen up from hands to toes.” Two days later, her brother, Jose Leandro-Barrera, died at age 45 with acute kidney failure caused by heatstroke, according to a report from the Hillsborough County medical examiner. His temperature in the ambulance had been 108 F, said the report. It described the circumstances…