Lone worker safety: your legal duties and how to protect field teamsLone worker safety: your legal duties and how to protect field teams

The engineer on a roadside callout. The technician alone in a plant room. The service rep walking into a stranger’s home. Lone workers are everywhere in field service, energy, logistics and facilities work: the British Security Industry Association estimates as many as 8 million people in the UK work alone at least some of the time. They face the same hazards as everyone else, but with one crucial difference: when something goes wrong, there is nobody beside them to help.

What counts as a lone worker?

The HSE defines a lone worker as “someone who works by themselves without close or direct supervision”. That is a much wider group than people picture. It includes those who:

• Work away from a fixed base: field engineers, maintenance and repair staff, delivery and HGV drivers
• Visit people’s homes or premises: care workers, surveyors, service and sales reps
• Work separately from colleagues or outside normal hours: security, cleaning and out-of-hours staff
• Work at a fixed base alone: a single person in a depot, warehouse or remote site
• Work from home

Is lone working legal? What the law actually says

There is no law that prohibits lone working, and no requirement to do a separate, standalone lone-worker risk assessment. But that does not mean it is unregulated. Under the Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999, employers must assess the risks to lone workers and put reasonable controls in place before allowing people to work alone.

• You must include lone workers in your general risk assessment and control the risks you find.
• If you employ five or more people, you must write down the significant findings.
• These duties cannot be transferred to the lone worker: the responsibility stays with you, and extends to contractors and the self-employed working on your premises.

The HSE’s free guidance INDG73 “Protecting lone workers” (opens in new tab) is the definitive plain-English reference and is well worth reading in full.

The risks lone workers face

Working alone doesn’t create new hazards so much as it removes the safety net. The risks that matter most:

• An accident with no one to help: the core multiplier behind every other risk.
• Violence and aggression: especially in public-facing and home-visit roles, and during late or early hours when fewer people are around.
• Medical emergencies: a sudden illness or collapse with nobody to raise the alarm.
• No way to summon help: dead phone signal, a panic alarm that can’t connect, a check-in nobody is monitoring.
• Fatigue and manual handling: long, unsociable hours and tasks meant for two people.
• Isolation: poor contact can leave workers feeling cut off, with real effects on stress and mental health.

• 689,000 incidents of violence at work (GB, 2024/25)
• 370,000 of those were physical assaults
• 38% of assaults resulted in injury
• 124 worker deaths (GB, 2024/25)

Several of the highest-risk occupations in the national figures (drivers, and health and social care visitors) are classic lone-worker roles. The HSE does not publish a separate “lone worker” cut of these numbers, but the pattern is clear: the people most exposed to work-related violence are often the ones working alone.

What a lone worker risk assessment should cover

The HSE frames a good assessment around three questions:

1. The worker and other people: their experience and training, and whether they are more vulnerable (new, young, pregnant, or a trainee).
2. The environment and equipment: is the location itself risky, rural or isolated? Are they entering someone else’s home? Do they have a reliable means of communication and a way to call for help?
3. How the work could trigger an incident: roles involving authority over the public, or carrying cash or valuable equipment.

From there, the HSE expects four kinds of control: training (lone workers can’t ask the person next to them, so they need more of it), supervision (the higher the risk, the more is required), monitoring and keeping in touch (regular check-ins, and a system that confirms a worker got home safely), and a reliable means to raise the alarm in an emergency.

BS 8484 and lone worker technology

BS 8484 is the British Standard for lone worker device and app services (current version BS 8484:2022). It is voluntary, not law, but it is the de-facto procurement benchmark and covers what a good lone-worker service should provide: a discreet panic alarm, two-way audio, location, and escalation to a monitoring centre. In practice the building blocks that protect a lone worker are GPS location, check-in / “I’m safe” timers, panic and man-down alarms, and fast incident reporting that captures what happened (photo, location, timestamp) for the records you are required to keep.

Why paper and ‘no signal’ let lone workers down

Here is where most lone-worker systems quietly fail. The HSE requires a reliable means of communication that is regularly tested, but lone workers are disproportionately in exactly the places mobile coverage drops: rural sites, basements, plant rooms, the roadside. A check-in app or alarm that depends on a live connection silently stops protecting people in the dead zones where they are most exposed.

Paper systems fail differently. A handwritten incident form filled in back at the depot loses detail, drifts on timestamps, and often never gets logged at all, so the incident record the HSE expects you to review simply doesn’t exist. And a manual check-in routine relies on someone noticing an absence in time to act.

Protecting your field team in practice

Protecting lone workers comes down to closing the distance between an incident and someone who can respond, even when there is no signal and no witness. That is the problem jobsafe is built around: incident capture that works fully offline and syncs the moment a connection returns, automatic GPS and timestamps on every report, in-app alerts to supervisors, an SOS screen with the right numbers for the site, and a history on every record that shows you met your duty of care. It is designed for the industries where people work alone and far from base, and your engineers will actually use it, because it lives on the phone already in their pocket.

Keep reading: make sure you know what RIDDOR requires you to report when a lone-worker incident does happen, and how near-miss reporting helps you catch risks before they reach your most exposed workers. Or call us on 0333 8000 883 to talk it through.

In the platform: Risk assessments & bowtie

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Sources and further reading

• HSE, Protecting lone workers (INDG73) (opens in new tab)
• HSE, Lone working: manage the risks (opens in new tab)
• Management of H&S at Work Regulations 1999, reg. 3 (opens in new tab)
• HSE, Violence at work statistics (2024/25) (opens in new tab)
• BSI, BS 8484 lone worker services standard (opens in new tab)