Length of service (IMAGE) Desert Research Institute Caption New research shows that in Arizona, Nevada and California, the number of heat-related injuries/illnesses tended to increase as length of service with the employer increased. Credit Erick Bandala/DRI Usage Restrictions This image may be used with appropriate caption and credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.