California is leading the way in making revisions to their OSHA Heat Illness Prevention Standards.
High heat procedures are now required for 5 industries when the temperatures reach 95 degrees or hotter. These industries include: agriculture, construction, landscaping, oil & gas extraction, and transportation or delivery of agricultural products, construction material, or other heavy material.
Such procedures include, observing employees who are out in the elements, reminding to drink water, and providing access to shade within proximity to their working areas.
In 2005, California became the first state in the nation to develop a safety and health regulation to protect workers from heat illness.