Abstract: At 4:00 p.m. on July 23, 2018, Employee #1, an employee of Sound-Crete Contractors, Inc., was operating a concrete pouring machine and engaged in general labor work, at a new residential construction site. During the workday, the temperature increased above 95 degrees Fahrenheit, and after installing acoustic material, Employee #1 began to operate a concrete pouring machine and once finished, he then took a break. During the break, Employee #1 sat down, drank water, rested and afterwards, began to feel sick, vomited and started to have cramps in his arms and legs. Employee #1 was sent home and his wife then transported him to the PIH health hospital, where he was diagnosed with heat stress related illness and released in two days.