Abstract: At 11:00 a.m. on June 10, 2022, an employee was controlling traffic during college commencement activities. The employee began his shift at 6:00 a.m., and at approximately 10:30 a.m. the employee reported to his supervisor that he was feeling unwell and experiencing back pain. Heat exposure was suspected because the temperature at 08:00 a.m. was 79 degrees F and had risen by 11:00 a.m. to 90 degrees F. The employee was advised by his supervisor to sit in the air-conditioned vehicle parked in the shade. However, the employee stated that he did not need medical attention and wanted to return home. The supervisor allowed the employee to return home. The employee checked himself into the hospital the following day for possible heart attack, and died at a later time.