PHMSA (Pipeline and Hazardous Materials Safety Administration)

A U.S. federal authorisation required for cross-border infrastructure like pipelines or transmission lines at the Canada-U.S. boundary. Subcontractors on these projects cannot mobilise or break ground until the permit is secured. Delays in approval directly impact your project schedule and contract start dates.

Ontario's grid authority that balances electricity supply and demand across the province. Subcontractors working on power infrastructure or energy projects must align schedules with IESO dispatch requirements. Grid maintenance windows and outage approvals are coordinated through IESO protocols.

A documented procedure outlining how a subcontractor responds to on-site incidents, injuries, or hazardous events. It identifies emergency contacts, evacuation routes, and crew responsibilities. Most prime contractors require subcontractors to submit and align their ERP before mobilisation.

A U.S. pre-construction air permitting process triggered when new or modified industrial facilities exceed emissions thresholds. Subcontractors working on facility expansions or new builds may face project delays until NSR approval is granted. Understanding NSR timelines helps field crews anticipate mobilisation schedules on affected sites.

A vetting process where operators assess a subcontractor's safety record, insurance, and certifications before awarding work. Companies must meet minimum standards to be added to an approved vendor list. Failing pre-qualification means being locked out of bidding opportunities entirely.

The share of electrical capacity a subcontractor's site equipment or temporary facilities must supply during periods of maximum demand. Operators may contractually require field crews to manage or limit equipment startup times to avoid triggering peak load charges. Failing to comply can result in cost penalties passed down through the prime contractor.

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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.

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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.

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Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.