RAMS for Lone Working

There is no standalone lone-working legislation in the UK, but the duty to assess and manage the risks is absolute. Management of Health and Safety at Work Regulations 1999, regulation 3 requires every employer to conduct a suitable and sufficient risk assessment of the risks to employees and others arising from their work activities. Where lone working is foreseeable, the RAMS must address it explicitly — the absence of a colleague is itself a material risk factor that changes the residual risk of almost every task on site.

Why Lone Working Changes the Risk Profile

The fundamental hazard of lone working is the absence of immediate assistance. Three categories of risk are introduced or worsened:

**Medical episode or injury with no help available.** A worker who suffers a cardiac event, a fall, or a crush injury cannot self-rescue and cannot summon help if communication has failed. The time-to-response gap can be fatal.

**Violence and aggression.** Workers entering unfamiliar premises, isolated plant areas, or customer sites face a higher risk of threatening encounters without a colleague present as a deterrent or witness.

**Task-specific escalation.** Incidents that a two-person team could contain — a small fire, a slip, a sudden gas release — can become life-threatening when no immediate intervention is possible.

Controls in Hierarchy Order

**Eliminate or substitute.** The first question is whether the task must be done alone at all. High-risk activities should require a minimum of two competent persons. Prohibition on lone working must be absolute for: entry into confined spaces (Confined Spaces Regulations 1997, regulation 5 requires rescue arrangements to be in place before entry — a lone worker cannot satisfy this); live electrical work where isolation is not possible (operatives must never attempt DNO or HV isolation — isolation is the primary control and must be confirmed before any lone work proceeds); and any work at height where the fall risk cannot be fully engineered out.

**Engineering controls.** Where lone working is permitted, engineering measures reduce the consequence of an incident: fixed barriers, machine guarding, automatic isolation systems, and gas detection with auto-alarm outputs.

**Administrative controls.** A documented check-in and check-out system is mandatory — intervals must be proportionate to the risk (no more than 30-minute intervals for higher-risk tasks; hourly may be sufficient for low-risk, familiar environments). The system must specify who monitors, what the escalation trigger is, and what action is taken if check-in is missed. Passive monitoring is not sufficient; a nominated person must be contactable and empowered to raise the alarm.

**Personal protective equipment and lone-worker devices.** Lone-worker devices with GPS, fall detection, man-down alerts, and two-way voice capability provide a last line of defence. PPE requirements are unchanged by lone working but must account for the fact that a colleague cannot assist with donning, check fit, or respond to a PPE failure.

Common Failings in Lone-Working RAMS

The most frequent shortcomings identified during review are: check-in procedures that exist on paper but have no named monitor; no defined escalation time or action when contact is lost; failure to prohibit high-risk tasks rather than simply warning against them; generic lone-working risk assessments that do not reflect the specific site, task, or environment; and no provision for workers who suffer a medical episode and cannot activate a manual alarm (man-down/no-movement detection addresses this).

What the Document Must Include

A compliant lone-working RAMS should contain: identification of every task to be performed alone and the site environment; assessment of the specific risks introduced by the absence of a second person; a clear list of tasks prohibited for lone workers; the check-in schedule, nominated monitor, and escalation procedure with defined response times; communication equipment requirements (network coverage must be verified, not assumed); emergency arrangements including the name, contact number, and authority of the emergency responder; and evidence of briefing to the operative before work commences.