Fly-In/fly-Out (fifo)

The study of how the body's internal clock affects alertness, performance, and safety during shift work. Subcontractors use it to design smarter rotation schedules that reduce fatigue-related incidents. Regulators increasingly reference circadian principles in hours-of-service and fatigue management requirements.

A legal situation where both a subcontractor and a client company share employer responsibilities over a worker. This creates liability risks around benefits, termination, and labour standards if boundaries aren't clearly defined. Subcontractors should maintain clear contracts and independent operating practices to avoid unintended co-employment claims.

A pre-hire assessment used to evaluate how candidates respond to realistic workplace scenarios. Operators and prime contractors use SJTs to screen field workers for safety judgement and decision-making. Subcontractors may encounter these tests when onboarding crews for client-managed worksites.

A jobsite where work is performed by multiple layers of subcontractors rather than direct employees of the site owner. For field service companies, this means accountability, liability, and payment flow through several parties. Subcontractors must track their position in the contracting chain carefully.

A business that generates revenue but has no paid employees — typically a sole proprietor or owner-operator. Many field subcontractors and independent tradespeople operate this way. Statistics Canada tracks these firms separately in labour and industry data.

The transitional period between peak and slow seasons when project volumes drop and scheduling becomes unpredictable. Subcontractors often face reduced call-outs, crew utilisation gaps, and tighter margins during these windows. Common in oilsands and construction work between summer and winter campaigns.

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What subcontractors are liable for when field personnel create conflict on a GC-managed site, and how to protect your contracts before it becomes a termination issue.

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