An independent company hired to identify and mark underground utilities before excavation or drilling begins. Subcontractors often rely on third-party locators when the site owner's in-house locate services are unavailable. Their clearance report is typically required before ground disturbance can proceed.
Third-Party Locator
Related Terms
Cave-In
ComplianceThe sudden collapse of excavation walls or trench sides onto workers below. Under provincial OHS regulations, subcontractors must implement protective systems before personnel enter any excavation deeper than 1.2 metres. Failure to comply can result in work stoppages, fines, and serious liability exposure.
Private Utility
ComplianceA utility line owned and maintained by a private company or landowner, not a public provider. These lines may not appear on municipal locate requests, creating hidden strike risks. Subcontractors must request owner-supplied records before any ground disturbance.
Whistleblower Protection
ComplianceLegal safeguards preventing retaliation against workers who report safety violations, fraud, or regulatory breaches. Subcontractors and field personnel cannot be fired, demoted, or penalised for reporting misconduct to regulators. Protection applies even when reporting against a prime contractor or client company.
Hazardous Energy Isolation
ComplianceThe process of controlling dangerous energy sources—electrical, hydraulic, pneumatic, or mechanical—before maintenance or repair work begins. Subcontractors must follow the site owner's lockout/tagout (LOTO) procedures or risk losing site access. Non-compliance can void your contract and trigger serious liability.
Leading Indicators
ComplianceProactive metrics that signal future safety or performance issues before incidents occur. For subcontractors, these include near-miss reports, toolbox talk attendance, and equipment inspection rates. Tracking them helps crews stay ahead of problems rather than reacting after the fact.
HOP (Human and Organizational Performance)
ComplianceA safety framework recognising that human error is normal and systems should be designed to reduce its impact. For subcontractors, HOP shifts blame away from individual workers toward process and organisational failures. Clients may require HOP-aligned incident reviews and pre-task planning on their worksites.
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