OREGON OSHA · DIVISION 2/O · RULE 437-002-0156

Oregon Has a Mandatory Heat Illness Prevention Rule. HeatShield Is Built to Comply With It.

Oregon OSHA 437-002-0156 requires employers with outdoor workers to provide water, shade, rest, acclimatization procedures, and documented training — with tiered requirements starting at 80°F and escalating at 90°F and 95°F. HeatShield automates the monitoring, documentation, and recordkeeping that OR OSHA inspectors expect to see.

Built around OR OSHA 437-002-0156 — the mandatory Oregon heat illness prevention rule
Per-worker acclimatization tracking — automated, no hardware required
Supervisor alerts when 80°F, 90°F, and 95°F thresholds are crossed
Documented training with certificates of completion — required by OR OSHA
Weekly supervisor review logged as a tamper-evident compliance record
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HeatShield app dashboard
WHAT OR OSHA REQUIRES

One Regulation. Tiered Requirements. Active Enforcement.

OR OSHA 437-002-0156 — Outdoor Heat Illness Prevention

Applies to All Outdoor Workplaces in Oregon

Oregon's heat illness prevention rule covers all employers with outdoor workers. Requirements are tiered based on the heat index — with additional obligations kicking in at 80°F, 90°F, and 95°F. Key requirements:

  • Written heat illness prevention program — must be maintained at the worksite and made available to workers and OR OSHA inspectors on request
  • Water and shade at 80°F — at least one quart of water per employee per hour; shade that is sufficient for all employees taking rest
  • Rest periods at 90°F — at a heat index of 90°F, employers must provide a minimum 10-minute rest period for every two hours of continuous work in the heat
  • High-heat procedures at 95°F — buddy system or regular supervisor contact required; no employee may work alone; more frequent check-ins and rest periods required
  • Acclimatization plan — new workers and those returning after 7+ days away from heat work must be gradually acclimated; supervisors must closely observe workers during this period
  • Training — all employees and supervisors must be trained before working in heat; training must be documented
  • Emergency response procedures — written and communicated to all workers; supervisors must know how to respond to heat illness
Oregon Enforcement — What Inspectors Look For

OR OSHA Conducts Proactive Heat Inspections During Heat Season

Oregon OSHA conducts proactive compliance inspections at outdoor worksites during heat season — not just in response to complaints or incidents. Inspectors look for documented evidence that required procedures are actually being followed, not just written down. Key documentation targets:

  • Written heat illness prevention program — must be site-specific, not a generic template
  • Training records — documented evidence that each employee was trained, with dates
  • Acclimatization records — evidence of close observation for new and returning workers
  • Monitoring logs — records showing heat index was tracked and procedures were activated at correct thresholds
  • High-heat procedure activation records — documentation that 90°F and 95°F procedures ran when conditions required
Proactive inspections — not just complaint-driven

Plain-language overview only. Not legal advice. Consult qualified legal counsel for program-specific guidance.

The HeatShield Solution

Every OR OSHA Requirement. Mapped to a HeatShield Feature.

OR OSHA Requirement Threshold How HeatShield Handles It Documentation Produced
Water & shade access 80°F Automated supervisor alert fires when WBGT reaches the equivalent of the 80°F OR OSHA threshold — using WBGT calculations more accurate than heat index alone Timestamped alert log per site
Rest period requirement 90°F Rest period alert fires when WBGT reaches the equivalent of OR OSHA's 90°F heat index threshold — automatically, with timestamped documentation Rest period activation log with conditions
High-heat procedures / buddy system 95°F High-heat alert fires when WBGT reaches the equivalent of OR OSHA's 95°F heat index threshold — push notification and alert email to supervisor with high-heat procedure activation High-heat activation log with conditions and supervisor acknowledgment
Acclimatization monitoring All temps Per-worker acclimatization status tracked; risk thresholds tightened for at-risk workers Worker acclimatization records per site
Supervisor & worker training Required Built-in LMS with OR OSHA-aligned course; bilingual (EN/ES) Certificates of completion per employee
Written heat illness prevention program Required Auto-generated compliance documentation for your organization and every site Export-ready PDF for OR OSHA inspection
Emergency response procedures Required Response steps surfaced during high-heat events; logged per monitoring session Emergency procedure acknowledgment log
OR OSHA 437-002-0156 — Acclimatization

The Requirement Most Programs Get Wrong.

OR OSHA 437-002-0156 requires close observation of workers who are new to heat work — or returning after 7 or more days away. Most companies don't track this at all. HeatShield does it automatically, per worker, on every site.

7+
Away = Reset

Workers returning after 7 or more consecutive days away from heat work must restart the acclimatization observation period under OR OSHA 437-002-0156.

2×
Higher Risk

Heat illness risk is significantly elevated during the acclimatization window. HeatShield adjusts alert thresholds for at-risk workers automatically.

100%
Of New Hires

All new workers must go through a structured acclimatization period before full heat exposure. HeatShield tracks every new worker automatically from day one.

Per-Worker Status Tracking
Each worker's acclimatization start date is recorded. HeatShield automatically identifies who is in the at-risk observation window at any given time — no spreadsheets required.
Adjusted Risk Thresholds
Heat stress risk scores factor in acclimatization status. Workers in the observation window trigger supervisor alerts at lower thresholds than fully acclimated crew members.
Documented for Inspection
Acclimatization records are stored per worker and exportable as part of your compliance packet — showing OR OSHA exactly which workers were in observation, and when the period started and ended.
Automatic Reset on Return
When a worker returns after 7+ days away, HeatShield automatically flags them as re-entering the acclimatization window — with no manual tracking or intervention required from supervisors.
Industries We Serve

If Your Workers Are in the Heat, Oregon OSHA Requires You to Have a Plan. HeatShield Is It.

🏗️

Construction

General contractors, subcontractors, and specialty trades with outdoor crews across Oregon. OR OSHA 437-002-0156 applies to every worker on every active site — and OR OSHA enforces it. HeatShield monitors each jobsite individually, tracks acclimatization for new hires and workers returning after 7+ days away, and keeps your documentation inspection-ready for OR OSHA compliance checks.

🌾

Agriculture & Nursery

Farms, orchards, vineyards, nursery operations, and greenhouse employers. OR OSHA has historically focused heat enforcement on agricultural employers — your records need to be airtight. HeatShield automates monitoring across multiple field sites, tracks crew acclimatization status, delivers bilingual (EN/ES) training, and produces the documentation OR OSHA inspectors expect to see.

🌿

Landscaping & Municipalities

Maintenance crews, installation teams, parks departments, and public works operations across Oregon. Willamette Valley heat events can be sudden and intense — HeatShield monitors conditions continuously and fires alerts the moment thresholds are crossed. Scales to unlimited sites at no extra cost, with acclimatization tracking for seasonal workers who rotate in and out throughout the year.

High-Heat Procedures — 90°F and 95°F

Oregon Requires Action at 90°F — Before It Gets Critical

OR OSHA 437-002-0156 uses a two-tier system: mandatory rest periods kick in at 90°F, and the full high-heat buddy-system procedures activate at 95°F. HeatShield monitors both thresholds and fires the right alert at the right time — automatically, with a documented record of every activation.

  • ✓ Automatically applies OR OSHA 437-002-0156 thresholds using WBGT calculations — more accurate than heat index alone — configured from your site's state, no manual setup required
  • ✓ 90°F trigger: rest period requirements logged and supervisor notified
  • ✓ 95°F trigger: high-heat procedures activated — buddy system, mandatory check-ins, enhanced rest
  • ✓ Push notification alerts supervisor, who can then notify workers across job sites with one tap
  • ✓ Every activation logged with timestamp for your compliance record
  • ✓ Risk level is increase-only — never auto-downgraded without supervisor sign-off
HeatShield high-heat alert view

OR OSHA Enforcement

OR OSHA Conducts Proactive Heat Inspections. Your Records Need to Be Ready.

Unlike some states that only inspect in response to complaints, Oregon OSHA conducts proactive compliance checks at outdoor worksites during heat season. Inspectors show up unannounced. They ask for your written program, your training records, your acclimatization documentation, and evidence that your monitoring procedures actually ran. HeatShield builds that record automatically — every day, every site — so you're inspection-ready at all times, not just after an incident.

  • ✓ Written heat illness prevention program — auto-generated and export-ready
  • ✓ Training records per employee — stored with completion dates
  • ✓ Acclimatization observation records — per worker, per site
  • ✓ Monitoring logs showing thresholds were tracked and procedures activated
  • ✓ One-click compliance packet export formatted for OR OSHA inspection
OR OSHA Compliance Packet
📋
Written Prevention Program
Auto-generated · Export-ready
Ready
🎓
Training Records
Per employee · Completion dates stored
Ready
👷
Acclimatization Records
Per worker · Per site · Timestamped
Ready
📄
Monitoring Logs
Thresholds tracked · Procedures activated
Ready

Training & Certification

OR OSHA Requires Documented Training. We Handle That Too.

OR OSHA 437-002-0156 requires both supervisors and employees to be trained before heat season. HeatShield includes a built-in LMS with an OR OSHA-aligned heat illness prevention course — tracked, certified, and stored for inspection.

  • ✓ Heat illness prevention training for supervisors and workers
  • ✓ Certificates of completion issued and stored per employee
  • ✓ Training history exportable as part of your compliance packet
  • ✓ Works on any smartphone — no app install required
  • ✓ Training available in English and Spanish
HeatShield training and LMS view
Documentation

What Gets Documented. Automatically. Every Day.

OR OSHA doesn't just want to know your procedures exist — and with proactive inspections during heat season, they may show up to verify that before you expect them. HeatShield builds your compliance record automatically, without anyone on your team having to fill out a single form.

📋
Every monitoring event
Date, time, site, temperature, heat index, WBGT score, and risk level — logged automatically for every check-in
🔔
Every alert sent
Recipient, channel (SMS/push), delivery status, and triggering condition — documented at the moment it's sent
🌡️
Every threshold crossed
80°F, 90°F, 95°F — each event timestamped and tied to a specific site and monitoring record
👷
Worker acclimatization status
Who was in the acclimatization window, when it started, and how risk alerts were adjusted for at-risk workers
🎓
Training completions
Employee name, course, completion date, and certificate of completion — stored per worker, exportable on demand
📄
Compliance packet export
One-click PDF covering your full monitoring, alert, acclimatization, and training history — formatted for OR OSHA inspection
What Our Users Say

What our users say about HeatShield Training

★★★★★

"HeatShield is easy to navigate and the concepts were clear and easy to understand."

Lauren T
★★★★★

"I loved the videos and the interactions...so much better than other trainings!"

Justin O
★★★★★

"Perfect for my entire team. It gives me compliance peace of mind."

Randy P
Frequently Asked Questions

What Safety Managers Ask Before Starting a Trial

OR OSHA 437-002-0156 requires outdoor employers to provide at least one quart of drinking water per hour per worker, shade whenever the heat index reaches 80°F, mandatory rest periods when the heat index reaches 90°F, and full high-heat procedures (including a buddy system and documented check-ins) when it reaches 95°F. Employers must also have a written heat illness prevention program, train all employees and supervisors before they work in heat, and implement structured acclimatization procedures for new workers and those returning after 7 or more days away from heat work.
Oregon uses a three-tier system. At 80°F: employers must provide water and shade — basic protections apply. At 90°F: mandatory rest periods kick in and supervisors must ensure workers are taking them. At 95°F: full high-heat procedures activate — this includes a buddy system or regular supervisor contact to monitor worker condition, more frequent check-ins, and documented evidence that procedures ran. HeatShield monitors all three thresholds and fires the right alert at the right time, with every activation logged for your compliance record.
Yes. OR OSHA conducts proactive compliance inspections at outdoor worksites during heat season — not only in response to complaints or incidents. Inspectors can arrive unannounced and will ask to see your written heat illness prevention program, proof that employees and supervisors were trained, acclimatization documentation for new and returning workers, and monitoring logs showing that your thresholds were actually tracked and your procedures activated when required. HeatShield builds all of this documentation automatically, every day, so you're ready whenever an inspector arrives — not scrambling after the fact.
Under OR OSHA 437-002-0156, all new workers must be gradually acclimatized before full heat exposure — the body needs time to adapt to working in heat, and rushing that process significantly increases illness risk. Workers returning after 7 or more consecutive days away from heat work must also restart the acclimatization observation period. During this window, supervisors are required to closely observe workers and respond immediately to any signs or symptoms of heat illness. HeatShield tracks each worker's acclimatization status automatically — flagging who is in the observation window, adjusting alert thresholds accordingly, and documenting the period for your compliance packet.
Yes. OR OSHA 437-002-0156 requires a written heat illness prevention program covering water and shade procedures, rest period requirements at 90°F, high-heat procedures at 95°F, acclimatization procedures for new and returning workers, training requirements for both employees and supervisors, and emergency response protocols. The program must be available at the worksite and provided in a language workers understand. HeatShield auto-generates your written program baseline and keeps your documentation export-ready for any inspection.
Yes. HeatShield supports unlimited job sites on every plan at no extra cost per site. Each site gets its own monitoring schedule based on its location, its own alert history, and its own compliance documentation — all managed from a single account. Ideal for contractors running multiple jobsites, agricultural operations with multiple field locations, and municipalities managing parks departments and public works crews across Oregon.
Your data and records are preserved. You choose a plan and continue uninterrupted, or cancel before the trial ends — no charge if you cancel. (Note: Training certificates of completion are issued only on paid plans.)
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Oregon Requires Documentation. OR OSHA Inspects to Confirm It. HeatShield Has You Covered.

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