A measure combining air temperature and humidity to reflect how hot conditions actually feel to workers. Subcontractors use it to assess heat stress risk and trigger mandatory rest breaks or work stoppages. Most site safety plans reference heat index thresholds to stay compliant with occupational health regulations.
Heat Index
Related Terms
Eminent Domain
ComplianceA government's legal right to seize private land for public use, with compensation paid to owners. For subcontractors, it can trigger sudden project delays or site access changes. Always confirm right-of-way status before mobilising crews or equipment.
Hazmat (hazardous Materials)
ComplianceAny substance posing a risk to health, safety, or the environment during transport, handling, or storage. Subcontractors working with hazmat must hold proper certifications and follow WHMIS and TDG regulations. Non-compliance can result in fines, site removal, or contract termination.
Metering Calibration
ComplianceThe process of verifying and adjusting flow meters, pressure gauges, and other measurement instruments to ensure accurate readings that meet regulatory and client standards — subcontractors providing metering services must maintain current calibration records as proof of compliance and to avoid liability for measurement disputes or billing discrepancies.
DOE (Department of Energy)
ComplianceA U.S. federal agency that regulates energy production, sets safety standards, and oversees projects involving nuclear, fossil fuel, and renewable energy. Subcontractors working on DOE-funded or DOE-regulated sites must meet strict compliance and security requirements. Contracts tied to DOE projects often include additional reporting obligations and certified personnel requirements.
NSSGA (National Stone, Sand & Gravel Association)
ComplianceA U.S. trade association representing aggregate producers and suppliers. Subcontractors working aggregate sites must often meet NSSGA safety and operational standards. Their guidelines influence site rules, equipment specs, and contractor qualification requirements.
Willful Violation
ComplianceA deliberate breach of a safety regulation or worksite rule, where the subcontractor knew the requirement and chose to ignore it. Regulators treat these far more severely than accidental non-compliance. Fines, stop-work orders, or contract termination can follow.
Latest Compliance News
OSHA Extends Heat Emphasis Program Through 2031, Raising Inspection Risk for Outdoor Crews
OSHA has issued an updated National Emphasis Program on heat hazards that runs through 2031, with compliance officers authorized to conduct random inspections of high-risk industries on days when the heat index hits 80 degrees or more.
3 months agoComplianceDeadline Nears for J. J. Keller's 2026 Safety Professional of the Year Awards
J. J. Keller & Associates is accepting applications for its 2026 SPOTY Awards through July 31, with winners receiving prize packages valued up to $47,200.
yesterdayComplianceDOT Plans New Rules on Truck Braking Systems and Electronic Logging Devices
The Department of Transportation's 2026 regulatory agenda includes a supplemental proposal for automatic emergency braking on heavy trucks and an update to electronic logging device rules, Safety+Health Magazine reports.
yesterdayComplianceKansas Adds Penalties for Distracted Driving in Work Zones
Kansas' new S.B. 366 bans handheld device use in active construction and school zones, with fines starting July 2027, Safety+Health Magazine reports.
yesterdayRelated Guides
When a Jobsite Incident Happens: What Field Workers Need to Know Before Signing Anything
What to do after a jobsite injury or incident, what your rights are before signing incident reports, how workers' compensation works, and how to protect yourself on multi-employer worksites.
Compliance GuideOSHA Citations on Multi-Employer Worksites: What Subcontractors Need to Know
Learn how OSHA's multi-employer citation policy works, why subcontractors get cited for hazards they didn't create, and how to protect your company on operator-controlled job sites.
Compliance GuideHow to Read and Negotiate an Oilfield Master Service Agreement (MSA): A Subcontractor's Guide
Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.
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