What is the OSHA heat standard for 2026?
OSHA published a Notice of Proposed Rulemaking for Heat Injury and Illness Prevention in Outdoor and Indoor Work Settings in August 2024. As of 2026, the proposed permanent rule has stalled, but OSHA's National Emphasis Program for heat enforcement remains active and OSHA continues to cite heat-related hazards under the General Duty Clause. Several states (CA, WA, MD, NV, CO, OR, MN) already have enforceable heat standards.
What heat index triggers does the OSHA heat rule use?
The proposed rule uses two heat index thresholds. 80°F is the initial trigger requiring water, shade access, paid rest breaks, and acclimatization protocols for new workers. 90°F is the high-heat trigger, adding mandatory 15-minute breaks every two hours and observation for symptoms.
What is a HIIPP (Heat Injury and Illness Prevention Plan)?
A HIIPP is the written program the proposed OSHA rule requires from covered employers. It documents hazard evaluation, water and shade provisions, work-rest schedules, acclimatization, training, and emergency response. Active cooling PPE — including cooling vests — can be part of the plan's hazard-control measures.
Do cooling vests count for OSHA heat compliance?
OSHA's heat illness prevention guidance lists cooling vests and other PPE as supplemental controls workers can use alongside engineering and administrative controls (shade, hydration, work-rest cycles). They do not replace those primary controls, but they extend safe productive time during periods of high heat exposure.
What are the penalties for an OSHA heat violation?
Under the General Duty Clause, serious heat violations can carry penalties up to $16,550 per violation. Willful or repeated violations can reach $165,514 per violation. Penalty figures are adjusted annually.
Which states already have enforceable heat standards?
California (Cal/OSHA), Washington, Maryland, Nevada, Colorado, Oregon, and Minnesota have state-level heat standards as of 2026, covering outdoor work and in some cases indoor work. Requirements vary by state but generally include written plans, water, shade, training, and acclimatization.
What is the OSHA National Emphasis Program for heat?
OSHA's heat-related National Emphasis Program (NEP) targets industries with high heat-related illness rates for inspection and enforcement. It has been active since 2022 and was extended through April 2026. Construction, agriculture, warehousing, and manufacturing are commonly targeted sectors.
How does an active cooling vest like ClemaCore support an OSHA HIIPP?
ClemaCore delivers a >25°F felt temperature drop for 8–12 hours with one battery swap without ice, water, or refilling, and is worn under existing PPE. Documented as part of a HIIPP's PPE/controls section, it can extend safe productive time at and above the 80°F heat-index trigger and reduce the frequency of mandated stop-work events at the 90°F high-heat trigger.