A 5 AM Conversation with Del Ramsgate, Who Built the Only Heat Rule Her Crew Has

Delia "Del" Ramsgate does not exist, though she would like you to know that she finds this extremely inconvenient, given that she has a crew showing up at 6 AM regardless. She is a composite character: imagined, but built from documented conditions, real regulatory gaps, and the daily protocols that actual Phoenix construction supervisors have assembled without institutional backing. Every fact she navigates — the death counts, the stalled federal rule, the non-binding state guidelines, the acclimatization science — is real and sourced below. The woman is invented. Her problem is not.

We talked at 5:15 on a Tuesday morning in early June, at a QuikTrip off the 303 in Buckeye, Arizona. She was reviewing the day's forecast on her phone and drinking coffee she described as "adequate." The high was 109.

You're up before five most mornings in summer. What does the first hour look like?

Del: Phone alarm at 4:30. I check three things before my feet hit the floor: NWS forecast, hourly heat index projections, and whether anyone on my crew called in sick overnight. If someone called in, I'm already reshuffling — who covers their tasks, does that person have shade access at the new station, are they acclimated to it. Then I check the calendar for new starts.

That's the one that keeps me up at night.

Why new starts?

Del: Because somewhere between fifty and seventy percent of heat fatalities happen in the first few days on the job.¹ OSHA's own numbers say nearly half of construction heat deaths happen on day one. So the protocol to prevent it — the twenty-percent rule, where you ramp a new worker up gradually over a week or two² — that costs productivity. My employer sees a body on site billing eight hours and working one-and-a-half. I see a twenty-three-year-old who's alive on Friday because I didn't let him pour concrete for eight hours on Monday.

Those are both accurate descriptions of the same situation. Only one of them has a funeral attached.

Walk me through what the ramp-up looks like on your site.

Del: Day one, a new hire works maybe ninety minutes in direct heat. Rest of the shift, I've got them in shade — sorting materials, doing inventory, whatever busywork I can manufacture that looks like it needed doing. Day two, three hours. Day three, a little more. By day five or six, they're on a full shift, and I'm still watching them. Skin color, coordination, whether they're sweating normally. If they've stopped sweating, that's an emergency, full stop.

Here's the part nobody talks about: a worker who was out for a week — vacation, injury, whatever — comes back and needs to restart at fifty percent.³ So I'm tracking not just new hires but absences. I have a spreadsheet for this. My employer did not ask me to make this spreadsheet. My employer does not know this spreadsheet exists. It lives on my personal laptop next to my fantasy football draft board, which, for the record, also involves a lot of speculation about which bodies can handle what conditions.

You mentioned your employer. How do those conversations go?

Del: [stares at her coffee for a while]

They're not villains. I want to be clear about that. They're a mid-size GC trying to win bids in a market where everyone's undercutting everyone else. When I say "I need this new kid at half-capacity for a week," they hear "we're paying for a full worker and getting half a worker." And they're not wrong about the math. They're wrong about what happens when you skip it.

The thing is — and this is what makes me crazy — there's no rule I can point to. Arizona has no enforceable state heat standard.⁴ The guidelines the task force put out in April are recommendations. Suggestions. "Consider providing shade."⁵ Consider. Like shade is a philosophical position. I can't walk into my boss's office and say "the law requires this." I can only say "I require this, on my sites, because I've read the data and I'm not going to be the one standing in a parking lot explaining to someone's mother what happened."

Does that argument work?

Del: About sixty percent of the time.

What about the federal rule? OSHA proposed one in 2024.

Del: [sets coffee down] I actually printed it out. The proposed rule. Eighty degrees, you provide water and shade access. Ninety degrees, mandatory rest breaks, active monitoring.⁶ I read it and I thought, finally. Someone is going to require what I've been doing on my own for six years. I could stop being the crazy lady with the binder and just be... compliant. Following the rule like everyone else.

Then January 2025. Regulatory freeze. The rule just stopped.⁷ It's still sitting there. "Pending." The revised NEP means OSHA can still cite you under the General Duty Clause if someone gets hurt,⁸ but that's reactive. Someone has to go down first. I spent six years wanting a speed limit. What showed up was a promise to investigate the crash.

Tell me about the binder.

Del: [laughs] The binder. My crew calls it The Tome. Three-ring, tabbed, laminated dividers — very 2003, I know — with my heat illness prevention program. Written plan, training sign-in sheets, daily temperature logs, hydration station locations, acclimatization schedules for every worker by name. Emergency response procedures. Contact numbers for the nearest ER that handles heat casualties, which in Buckeye is not as close as you'd want it to be.

No law requires me to keep it. But if someone on my crew goes down and OSHA shows up, they're going to ask whether I had a recognized hazard and a feasible way to address it.⁹ That's the General Duty Clause standard. So I need to prove I knew heat was dangerous — not hard — and that I did something about it. The Tome is my proof.

That's a strange position.

Del: It's a fully insane position. But the alternative is what? Wing it? California put an enforceable standard in place and saw heat deaths among outdoor workers drop thirty-three percent. After they tightened it, fifty-one percent.¹⁰ We know what works. We just don't have it.

So I made my own version. It lives in my truck. It has no legal authority. My employer tolerates it because I'm good at my job and my crews don't have incidents. The day I'm not useful enough to tolerate, the binder goes with me and the next supervisor may or may not care whether the new kid gets a ramp-up schedule.

What's the hardest call you make on a regular basis?

Del: Whether to pull the crew off a pour when the heat index is climbing but we're not done. Concrete doesn't care about the heat index. Once it's mixed, you've got a window. If I pull the crew, we lose the pour — materials, schedule, money, a conversation with my boss I don't want to have. If I don't pull the crew, I'm gambling that nobody's core temperature crosses the line in the next ninety minutes.

Is there anything you want people to understand about this that they probably don't?

Del: [picks at the edge of her coffee lid for a moment]

That it's already happening. People think heat deaths are a future problem, or a homelessness problem, or a "those people don't drink enough water" problem. Over four thousand people have died from heat in Arizona since 2013.¹¹ Six hundred and forty-five in Maricopa County alone in 2023.¹² Workers die on the job every year in this state and we don't even have a reliable count because the reporting is so bad.¹³

I'm not asking for something radical. I'm asking for a rule that says: above this temperature, you must provide water, shade, and rest breaks. Seven states have some version of this.¹⁴ Arizona, where it was a hundred and nine degrees before my crew even started this morning — Arizona does not.

So I keep the binder. I fight with my boss about the new kid's schedule. I check the forecast at 4:30 AM. And I hope that's enough. Most days it is.

But "most days" is a terrible safety standard.

Over one million workers in Arizona are employed in industries that expose them to extreme heat.¹⁵ They enter the summer of 2026 covered by non-binding guidelines, a general-duty clause that activates after harm has already occurred, and whatever their immediate supervisor decides to do each morning. For many of them, the closest thing to an enforceable heat standard is a person — someone like the woman described here, who built her own protocol and carries it in her truck. The form holds as long as she does.

Footnotes

1. Industry sources citing NIOSH guidance indicate that 50–70% of outdoor heat fatalities occur in the first days of working in hot conditions; OSHA notes that nearly half of construction heat illnesses and deaths occur on a worker's first day, and more than 80% within the first week. See OSHA, "Heat — Protecting New Workers"; ClimateRig, "Heat Acclimatization for Workers," April 2, 2026. ↩

2. CDC/NIOSH recommends the "Rule of 20 percent": new workers should work only 20% of normal duration on day one, increasing by 20% each subsequent day. CDC/NIOSH, "Acclimatization — Heat". ↩

3. OSHA and NIOSH recommend workers returning after seven or more days away restart at 50% exposure on day one, increasing by 10% daily. CDC/NIOSH, "Acclimatization — Heat". ↩

4. Arizona has no state-level outdoor heat standard carrying the force of law. Cronkite News, "Arizona adopts new workplace heat safety guidelines," April 20, 2026; KJZZ, "Arizona will strengthen workplace heat guidelines, but won't create enforceable standard for now," April 10, 2026. ↩

5. The Industrial Commission of Arizona voted April 9, 2026 to approve non-binding heat safety guidelines developed by the Workplace Heat Safety Task Force. Fifteen of the 24 task force members had called for enforceable rules; the final recommendation did not include enforcement provisions. KJZZ, April 10, 2026; Cronkite News, April 20, 2026. ↩

6. OSHA's proposed Heat Injury and Illness Prevention Standard (NPRM published August 30, 2024) would have required drinking water, rest breaks, and shade access at 80°F, with mandatory rest breaks, enhanced monitoring, and acclimatization protocols at 90°F. AlertMedia, "OSHA Heat Regulations". ↩

7. Following the January 2025 regulatory freeze, the proposed federal heat rule has been effectively halted with no finalization date set. Bracewell & Dunlap, "OSHA Refines Heat Enforcement Strategy While Federal Heat Rule Remains Pending," April 23, 2026. ↩

8. OSHA issued a revised National Emphasis Program for heat-related hazards on April 10, 2026, continuing targeted enforcement under the General Duty Clause through April 2031. National Law Review, "OSHA's 2026 Heat NEP Intensifies Enforcement for Contractors," April 30, 2026. ↩

9. To sustain a General Duty Clause citation, OSHA must establish that a recognized hazard existed, that it caused or was likely to cause death or serious harm, and that a feasible abatement existed. Tucson.com / Cronkite News, "Arizona guidelines to protect workers from heat hard to enforce," April 23, 2026. ↩

10. A Health Affairs study found California saw an estimated 33% decrease in heat-related deaths among outdoor workers after intensifying enforcement in 2010, and a 51% reduction after 2015 revisions. Cronkite News, April 20, 2026. ↩

11. Arizona Department of Health Services reports more than 4,320 heat-caused and heat-related deaths in Arizona since 2013. AZDHS, "Heat Safety". ↩

12. Maricopa County recorded 645 heat-related deaths in 2023. Maricopa County Department of Public Health, Heat Surveillance Dashboard. ↩

13. OSHA states that heat-related workplace deaths, illnesses, and injuries are vastly underreported. KJZZ, "Arizona workers die from heat exposure every year," April 6, 2026. ↩

14. California and six other states have enforceable heat standards requiring employers to provide water, shade, and heat safety training. KJZZ, "What would heat safety regulations mean for Arizona employers?", April 6, 2026. ↩

15. The Natural Resources Defense Council estimates more than one million people in Arizona work in heat-exposed industries. KJZZ, "Arizona workers suffer in extreme heat, but many fear speaking out," April 6, 2026. ↩