Background: Cal/OSHA heat illness prevention regulation (T8CCR3395) became effective on May 1, 2015. This standard applies to outdoor areas of employment. When porters are parking cars and salespersons are showing automobiles on display to customers or taking them on test drives, they are considered to be working outdoors. Fed-OSHA also requires that employees be trained in heat illness prevention under a general injury prevention standard. Cal/OSHA enforcement details are at http://www.dir.ca.gov/dosh/heatillnessqa.html.