Arizona adopts heat safety rules for outdoor workers but does not require them

What the heat safety rules for outdoor workers require

Arizona now has heat safety rules for outdoor workers, but the state did not make them the law. On April 9, 2026, the Industrial Commission of Arizona, the state agency that oversees workplace safety, adopted guidelines recommended by a task force created by Governor Katie Hobbs. The guidelines cover water, shade, rest, heat acclimatization, giving a worker time to adjust to hot conditions before a full shift outdoors, and training. No source among the 5 states a specific temperature or rest break length. The agency heat page, the governor press release, the agency enforcement document, and 2 news accounts of the vote all confirm the absence.

The task force finished its recommendations on December 31, 2025, naming 3 categories, water and shade and rest, worker acclimatization, and safety training. An advisory committee inside the agency reviewed them on February 4, 2026. The April 9 adoption date is a MAOWCE calculation, combining a filing date on a linked agency document with a news account of the vote on a Thursday, since neither source states a date alone. So an employer alone decides how much water, shade, rest and acclimatization time count as enough.

Arizona already enforces heat hazards today, separate from the new guidelines. A 2023 agency document on the Heat Stress State Emphasis Program states the program relies on the general duty clause of the Occupational Safety and Health Act, the broad rule used for any hazard with no specific standard. Inspections start when the National Weather Service issues a heat warning or advisory, not at any state set temperature number. The new guidelines add no enforcement mechanism, and an employer who ignores them faces no penalty.

It's pretty simple, have water available, have shade available, allow employees to be acclimatized, have rest breaks.

Dennis Kavanaugh, chairman of the Industrial Commission of Arizona. Source 5.

How the guidelines became official

7 other states already require these protections by law and penalize employers who skip them. Arizona is not one of the 7. The task force delivered recommendations on December 31, 2025. The advisory committee reviewed them 35 days later, on February 4, 2026. The commission then took another 64 days to adopt them, on April 9, 2026, a total of 99 days from task force to vote. The 35, 64 and 99 day counts are a MAOWCE calculation from these 3 dates, since no source states a day count directly.

Through the first full summer since the vote, the commission has run no formal inspection tied to the new guidelines. It has instead asked large employers informally, in public meetings, whether they follow the recommendations. Chairman Dennis Kavanaugh said most employers asked say they comply, with no count given for how many were asked. No penalty applies to an employer who does not. The commission plans to revisit the guidelines in December 2026, with no specific date set.

Guidelines don't serve the same function as standards because guidelines are voluntary.

Trina David, an outdoor worker at a Phoenix airport. Source 4.

When they're recommendations and not an enforceable standard, we'll always have individuals who will choose to not provide these protections.

Jazmin Moreno Dominguez, a workers rights advocate with Agave Community Threads. Source 5.

Commissioner Orion Godfrey said after the vote that he looks forward to a day when Arizona workers have a standard that protects them, in place of the recommendations adopted now. The chairman calls the guidelines a beginning, not a finished rule. The guidelines describe what a good employer should do about heat, but require nothing, and no number in state guidance says how hot is too hot.