Scaffold fatality on a multi-employer site
At a nine-storey residential project in Ulaanbaatar, a main contractor employs 96 workers and three subcontractors employ another 44. On 14 May a 23-year-old subcontractor's worker fell 6.2 m from a scaffold while carrying formwork. The scaffold had been erected two days earlier; no handover certificate was issued, the guardrail on that bay was missing, and the worker wore a harness but was not clipped to a lifeline. He was taken to hospital and died the next morning. The site manager wants to restart work on the same day, has offered the family cash 'to avoid trouble', and has not notified the State Labor Inspector. The subcontractor says the main contractor supplied the scaffold. An inspector arrives unannounced at 16:00. Welding continues nearby and the fallen worker's tools remain on the ground.
1. What immediate legal and scene-management actions should the inspector and the employer take, and in what order? Explain who must be notified and why.
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The order should be: preserve life, preserve evidence, notify, then investigate. Rescue has already happened, so the inspector should first stop welding near the scene, clear unauthorised people, and treat the area as a potential crime scene. Tools, the scaffold bay, harness, lanyard and anchor point should not be moved except to prevent further harm. Photograph and sketch the scene before anything is disturbed, record the position of the tools and the missing guardrail, and start a chain-of-custody log.
The employer must notify the State Labor Inspector and the police without delay. A work-related fatality is reportable; failure to report is itself an enforcement issue. The inspector should record a verbal prohibition on scaffold work and confirm it in writing, while allowing work elsewhere only if it is safe.
The cash offer is not a lawful way to close the case. Compensation and social-insurance benefits are separate from the criminal and administrative investigation, and any payment conditioned on silence should be treated as suspected obstruction. The inspector should interview witnesses separately, including the scaffold erector and the subcontractor's supervisor, and secure the scaffold handover and inspection records. The employer should also notify the family and provide support without admitting liability.
2. Allocate OSH responsibilities between the main contractor and the subcontractor, and assess whether the main contractor can rely on the subcontractor's own safety management.
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The main contractor, as host and principal contractor, has a site-wide duty to coordinate work and to ensure that shared equipment and shared areas are safe. The subcontractor has a duty to its own workers, but that does not remove the main contractor's duty. Statutory duties cannot be contracted away by a clause saying the subcontractor is responsible for all safety.
The scaffold is the critical shared item. If the main contractor supplied it, the main contractor should have ensured it was erected by a competent person, inspected before use, tagged, and handed over with a record of what was checked. The subcontractor should not have allowed its worker to use a scaffold with a missing guardrail; it had a duty to inspect before work started and to stop work if the scaffold was defective. Both parties may therefore be liable, with different degrees of fault.
The main contractor cannot rely only on the subcontractor's paperwork. It should have a joint risk assessment, exchange information about hazards, coordinate permit-to-work and rescue arrangements, and verify in practice that fall protection is worn and anchored. Contract clauses and indemnities affect cost recovery between companies, not criminal or administrative responsibility to the state or to the worker.
3. The site manager argues the fatality is a criminal matter for the subcontractor and that production should resume. How should the inspector respond, and what enforcement or follow-up is proportionate?
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The inspector should reject the idea that production can simply resume and that the case belongs only to the subcontractor. The inspector should separate three tracks: preservation of the scene and police investigation; the OSH investigation and enforcement against all duty holders; and compensation and social-insurance entitlements for the family.
Restart should be staged, not refused across the whole site by default. Scaffold work should stay prohibited until the scaffold has been inspected by a competent person, defective bays corrected, handover documented, and fall protection verified. Other work can continue only if the inspector is satisfied that the fatality is not a signal of a site-wide failure. If the investigation shows missing inspections, no competent-person control, or normalised harness misuse, an improvement notice covering the whole fall-protection system is proportionate.
The inspector should not accept a 48-hour closure or a cash settlement as the end of the matter. The family's agreement may affect civil claims, but it cannot waive the state's investigation or the employer's statutory duties. The inspector should document the manager's attempt to delay notification, interview the family only with sensitivity, and consider referral for prosecution or administrative liability if evidence shows gross neglect.
4. What evidence should be collected to decide whether the missing guardrail was a one-off error or a systemic failure, and how should the inspector use it?
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The inspector should collect the scaffold design and erection record, the identity and competence of the erector, the inspection tag and handover certificate, and the maintenance log for that bay. The scaffold should be inspected bay by bay, not just where the fall occurred, because a missing guardrail in one place often indicates a wider inspection failure. The inspector should also check whether the guardrail was removed for access and never replaced, and whether any worker had reported it.
Witness interviews should test the normal practice: were workers expected to clip on, was a lifeline available, and were supervisors checking? Training records, toolbox-talk records, and the subcontractor's daily inspection sheets should be reviewed. The site diary and production pressure around 14 May should be examined, because speed of work can explain why a bay was left unprotected.
The inspector should then distinguish the immediate cause, the missing guardrail and unclipped harness, from systemic causes such as no handover, no competent-person verification, and no enforcement of fall protection. If the evidence shows a pattern, the enforcement response should target the system, not just the individual worker. The inspector should also check whether other trades were exposed to the same gap and require a site-wide scaffold audit.