Most construction sites are run by a mixed workforce.

Main contractor teams, subcontractors, agency workers, specialist trades, visitors, and short-term crews may all be working on the same site in the same week. Each group arrives with its own training background, habits, internal systems, and assumptions or attitudes about safe practice.

That creates a hard problem for site managers and Health & Safety directors.

While you may not employ every worker on site, you still have to manage the risks created by the work being carried out there.

The practical gap is clear: you are accountable for site safety, but you do not control every subcontractor’s internal training system.

A subcontractor may have completed their own company induction. They may have signed RAMS. They may carry the right tickets. That still does not prove they understand your site-specific rules, your client requirements, your exclusion zones, your reporting process, your housekeeping expectations (and why they matter), or the exact way you expect safety-critical work to be done.

The risk often appears as small differences in practice.

One crew treats a walkway as a temporary storage area. Another sees that as a serious breach. One team reports near misses immediately. Another waits until the end of the shift. One subcontractor follows the agreed traffic route. Another takes a shortcut because that was normal on a previous site.

These differences create real risks: safety risk, quality risk, and audit risk.

The reporting environment is also getting stricter. ESRS S1, part of the European Sustainability Reporting Standards, brings greater scrutiny to workforce health, safety, training, and coverage. It explicitly includes non-employee workers, such as contractors, subcontractors, and people supplied by employment undertakings, within the wider workforce reporting picture.

That matters for construction. Clients, investors, boards, and auditors increasingly expect evidence that all workers on site are covered by appropriate safety communication and controls.

A paper induction does not give enough evidence. A PDF manual does not prove understanding. A corporate LMS is often built for employees who sit at a desk, with email addresses, stable system access, and time to complete structured modules. Many subcontractors do not fit that model.

They may only be on site for a short period. They may work across several projects. They may not have your corporate login. They may need information before they arrive. They may need to check a site rule from their phone while standing beside the task.

This is where Slick+ fits.

Slick+ gives construction companies a way to create one approved visual standard for every worker on site, regardless of employer. Site-specific SOPs can be delivered directly to smartphones, accessed by QR code, grouped by role or task, and tracked.

A subcontractor does not need to be added to your corporate LMS to receive the critical instruction.

They scan a code, open the relevant playlist, watch the required short videos, and confirm completion before starting work.

That could include:

• A pre-arrival induction for a subcontractor team starting on Monday.
• A site access and traffic route video for delivery drivers.
• A lifting zone and exclusion area SOP for steel contractors.
• A housekeeping and waste control video for finishing trades.
• A near-miss reporting guide for all workers.
• A PPE and protective clothing guide for a client-controlled site.

The benefit is evidence. You can see who has watched each procedure. You can identify gaps by site, role, subcontractor, or topic. You can update instructions when site conditions change. You can easily show that the same approved process was issued to every relevant worker.

This supports audit readiness because the business can move from assumption to proof.

Instead of saying, “The subcontractor was given the site rules,” you can show the visual SOP, the worker group it applied to, when it was issued, and who completed it.

For QA teams, this supports consistency. For HSE teams, it strengthens evidence of communication and application. For site managers, it reduces repeated explanations and reduces the risk of different crews working to different standards.

For subcontractors, it makes expectations clearer before they arrive on site.

The goal is simple: one site, one standard, one trackable source of truth for safety-critical practice.

Subcontractor management will always involve complexity. The communication of site-specific safety procedures should be simple, visual, and verifiable.

Book a Slick+ demo to see how trackable visual SOPs can help prove audit readiness, standardise subcontractor practice, and protect your site across every team working on it.