OEB (Ontario Energy Board)

A sudden cave-in of trench walls during excavation, posing serious injury or fatality risk to workers below grade. Subcontractors must ensure shoring, sloping, or trench box systems meet provincial OH&S requirements before crew entry. Liability for collapse incidents often falls on the excavating subcontractor, making documented safety compliance critical.

Legally required costs to decommission and remediate a site at end of life, such as plugging wells or removing infrastructure. Operators budget ARO years in advance, which can create late-project work opportunities for subcontractors. Understand how ARO timelines affect contract scope, since decommissioning work often has strict regulatory deadlines.

A documented safety plan requiring subcontractors to manage worker exposure to extreme heat on jobsites. It typically covers hydration protocols, work-rest cycles, and heat acclimatisation schedules. Clients and prime contractors often require proof of a compliant program before mobilisation.

An accidental strike on a buried utility, pipeline, or cable during excavation work. For subcontractors, a dig-in can trigger work stoppages, liability claims, and regulatory investigations. Always confirm locate tickets are current before any ground disturbance.

The process by which operators and prime contractors vet subcontractors before awarding work. It typically involves reviewing insurance, safety records, certifications, and financial stability. Failing to qualify can bar a company from bidding on projects entirely.

Records that prove work was completed to spec, including inspection reports, redlines, and sign-offs. Subcontractors use these to protect themselves during client audits or warranty disputes. Missing documentation can delay invoicing or trigger costly rework claims.

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.

OSHA 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.

How 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.