The standards outlined in Section 3395 are applicable across various industries, aiming to mitigate the occurrence of heat-induced health issues. These regulations encompass sectors such as agriculture, construction, landscaping, oil and gas extraction, and transportation or delivery of heavy materials like agricultural and construction products.

The Department of Industrial Relations (DIR) has provided a Q&A document to assist individuals in determining if their workplace falls under these regulations.

According to the guidelines, an outdoor place of employment is defined as any space that is not enclosed. This includes open areas like agricultural fields, forests, parks, equipment and storage yards, outdoor utility installations, tarmacs, and roads. Construction sites without completed building shells and areas outside any existing building shells are also considered outdoor workplaces. Additionally, outdoor areas adjacent to buildings, such as loading docks, are classified as outdoor places of employment if employees spend a substantial amount of time working in these areas.

Structures like sheds, packing sheds, and partial or temporary constructions such as tents, lean-tos, and structures with open sides can be either indoor or outdoor workplaces based on specific conditions. In some instances, these structures might be hotter than the environment outside due to factors like sun exposure and limited air circulation. DOSH (The Department of Occupational Safety and Health) considers a structure in this category as an outdoor workplace if it does not significantly mitigate the environmental risk factors present immediately outside the structure.(http://www.fels.net/Data/Laws/CalOSHA-Heat-Illness-2009-QandA-Guidelines.pdf)