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Is a written heat plan required in Arizona? Required vs. recommended

Checked against Arizona’s published heat guidance on Oct 29, 2026 · By Anchor Point Apps · Not legal advice

Short answer: not by a heat-specific law. Longer answer: it’s still the thing ADOSH expects to see, and the one document that does the most to protect you and your crew.

What’s binding

• The general duty clause. Employers must keep the workplace free of recognized hazards likely to cause serious harm. The SEP cites A.R.S. §23-403(A). Heat qualifies as a recognized hazard, and ADOSH has relied on this clause for heat enforcement.
• Sector rules that already exist. The Arizona Farm Bureau’s 2026 guide says agricultural employers are already bound by a field-sanitation standard (it reports coverage for operations with five or more employees doing hand labor, with potable water at no cost, at least 2 gallons per employee per day, no warmer than 80°F). Check the current Arizona Administrative Code before relying on those figures.

What’s recommended (but expected)

The April 2026 guidance asks for a written plan covering water, shade, rest, acclimatization and training. It’s not an enforceable standard. But the SEP tells inspectors to look at exactly these things, and the Arizona Farm Bureau tells its members that “in practice ADOSH compliance officers will look for each of these during an inspection.”

Why that matters

• Because there’s no specific rule, ADOSH has a higher burden of proof in contested cases (per the Arizona Farm Bureau), which means your documentation carries a lot of weight, in either direction.
• The commission has ordered a review by the end of 2026. Advocates for binding rules say the guidelines fall short, and the rules could tighten.
• Insurers and general contractors may ask for your plan whatever the state requires. (Our observation, not a cited rule.)

Our take

Treat the guidance as the standard you’ll be measured against. A written plan, training records and acclimatization records cost little compared with an inspection or an incident without them. This isn’t legal advice; ask a qualified attorney or safety professional what applies to your operation.

Worth knowing: ADOSH publishes a free, customizable example Heat Illness Prevention Plan and offers free, non-enforcement consultations (the Arizona Farm Bureau lists the consultation line as (602) 542-1769; confirm on the ADOSH heat page). If you’re comfortable editing a generic template, start there. A paid builder only makes sense if you’d rather answer a short set of questions and get a plan, training sign-in sheet and logs tailored to your trade and crew, in English and Spanish.

Quick answers

Not legal advice. Not a government site. Heatplan AZ is an independent project of Anchor Point Apps LLC. It is not affiliated with, endorsed by, or sponsored by the Industrial Commission of Arizona, ADOSH, OSHA, or any other government agency. Nothing here is legal or safety-engineering advice, and using a plan, checklist or guide doesn’t guarantee compliance, a clean inspection, or any outcome. Talk to a qualified safety professional or attorney about your operation.