OAR 437-002-0156
For OAR 437-002-0156, jurisdiction is Oregon; effective date is June 15, 2022; initial trigger temperature f is 80; initial trigger actions is Shade when heat index equals or exceeds 80°F; drinking water up to 32 ounces per hour; encourage and allow preventative cool-down rest periods; high heat trigger temperature f is 90, recorded from its source on 2026-08-17.
- jurisdiction
- Oregon verified
- regulation citation
- OAR 437-002-0156 verified
- effective date
- June 15, 2022 our reading
- initial trigger temperature f
- 80 verified
- initial trigger actions
- Shade when heat index equals or exceeds 80°F; drinking water up to 32 ounces per hour; encourage and allow preventative cool-down rest periods our reading
- high heat trigger temperature f
- 90 verified
- high heat actions
- Mandatory rest break schedule: at heat index 90°F or greater, minimum 10 minutes every 2 hours; at 100°F or greater, 15 minutes every hour (Table 1 minimum). Simplified schedule option (Table 2): 90°F 10 min/2hr, 95°F 20 min/hr, 100°F 30 min/hr, 105°F 40 min/hr. Communication by voice or electronic means; buddy system or regular communication for lone workers; designated employee authorized to call for emergency medical services our reading
- coverage scope
- Indoor and outdoor; all industries where heat index equals or exceeds 80°F; exempt: incidental exposure under 15 min/hr, heat from work process, emergency operations, mechanically ventilated buildings below 80°F our reading
- acclimatization period days
- 14 verified
- written plan required
- Yes our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
This standard applies whenever an employee performs work activities, whether in indoor or outdoor environments, where the heat index (apparent temperature) equals or exceeds 80 degrees Fahrenheit.
— osha.oregon.gov, retrieved 2026-08-17
Source
- osha.oregon.govhttps://osha.oregon.gov/OSHARules/div2/div2J.pdf