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
CPWR (Centre for Construction Research and Training)
ComplianceA U.S.-based non-profit that develops safety research, training materials, and hazard guides used widely across North American job sites. Subcontractors often reference CPWR toolbox talks and fall protection resources to meet compliance requirements. Their free publications can support your crew orientations and site safety plans.
Confined Space Certification
ComplianceA mandatory credential confirming workers are trained to enter and work in enclosed or restricted areas such as tanks, vessels, or excavations. Subcontractors must hold valid certification before site access is granted on most oil and gas and construction projects. Expired certificates can result in worker removal, project delays, or contract penalties.
Section 232
ComplianceA U.S. trade law allowing tariffs on imported steel and aluminium deemed a national security threat. For subcontractors, it drives up material and equipment costs on cross-border projects. Budget accordingly when pricing jobs involving U.S.-sourced pipe, structural steel, or fabricated components.
Duty of Care
ComplianceA legal obligation requiring subcontractors to take reasonable steps to protect workers, clients, and the public from harm. It applies on-site, during travel, and in remote or hazardous work environments. Failing this duty can result in liability claims, lost contracts, or regulatory penalties.
Federal Lease
ComplianceA government-issued agreement granting a company the right to explore or extract resources on federally managed land. Subcontractors working on these sites must meet stricter regulatory and documentation requirements. Expect additional compliance checks, environmental controls, and reporting obligations on federally leased projects.
Joint Employer
ComplianceA legal finding that two companies share employer responsibilities over the same workers. In field service, this can mean a client company is liable for your crew's wages, hours, or working conditions. Subcontractors should review contracts carefully to avoid unintended joint employer exposure.
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.
4 months agoComplianceOshawa GO Station Expansion Breaks Ground, Adding Track and Platform Packages
Construction has started on a major expansion of Durham College Oshawa GO Station, adding two tracks, new platforms, and pedestrian bridges to support two-way, all-day GO service, Daily Commercial News reports.
2 days agoComplianceNIOSH Releases Toolbox Talk on Overhead Power Line Hazards
NIOSH and CPWR published a new toolbox talk urging crane, lift and ladder crews to keep 20 feet of clearance from overhead power lines after a fatal crane incident on a school jobsite.
7 days agoComplianceCSB Report: Longview Tank Was Flagged "Not Fit for Service" 10 Months Before Fatal Failure
The U.S. Chemical Safety Board found that an inspection report warned Nippon Dynawave that a storage tank at its Longview, WA mill was unfit for continued service months before it failed, killing 11 workers.
9 days agoRelated 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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