EHS glossary>Safety term

The Definition of Lone Worker

A lone worker is anyone who works alone without close or direct supervision, where help may not be readily available if something goes wrong.

Plain-English definition
Real-world example
Lone Worker definition

Definition of Lone Worker

A lone worker is anyone who works by themselves, without close or direct supervision, in a situation where help may not be readily available if they are injured, become ill or face a threat. Lone working is about isolation from help, not just being physically alone. A worker can be a lone worker even in a busy public place if no colleague knows where they are or can respond quickly.

Lone workers are found in almost every industry. Examples include field service technicians, utility and telecom workers, drivers, security guards, home healthcare and social workers, real estate agents, cleaners working after hours, farm workers, surveyors and staff working night shifts in retail or fuel stations.

Most workplace safety laws do not ban working alone, but they require employers to assess and control the risks. In the United States, the OSHA General Duty Clause applies, and some states and provinces have specific rules. In Canada, several provinces have working alone regulations. In Australia, model WHS Regulation 48 requires effective communication for workers in remote or isolated work. In the UK, employers must assess lone working risks under the Management of Health and Safety at Work Regulations.

Risks Faced by Lone Workers

  • Delayed help after injury or illness: a fall, medical event or vehicle crash can become far more serious if no one knows it has happened.
  • Violence and aggression: workers who handle cash, enter clients' homes or work at night may face threats or assault.
  • Remote and environmental hazards: poor phone coverage, extreme weather, wildlife and difficult terrain.
  • Driving: long distances, fatigue and isolated roads.
  • High-risk tasks: working at height, in confined spaces or with live electrical equipment is often unsuitable for lone work.
  • Psychological strain: isolation, stress and limited support.

Managing Lone Worker Safety

Risk assessment

Start by identifying who works alone, when and where, and what could go wrong. Decide whether the task can be done safely alone at all. Some tasks should always need at least two people, often called a buddy system.

Check-in procedures

Set a schedule for lone workers to check in at the start and end of a job and at regular intervals. Define what happens when a check-in is missed, including who follows up, how quickly and when to escalate to emergency services.

Communication and monitoring technology

  • Mobile apps with timed check-ins, location sharing and SOS or panic buttons.
  • Satellite devices for areas without cell coverage.
  • Fall detection and no-motion alerts.
  • Geofencing that triggers alerts when workers enter or leave set areas.
  • Integration with journey management for workers who drive to remote sites.

Training and policy

A written lone worker policy should explain roles, check-in rules, escalation steps and the right to refuse unsafe lone work. Workers should be trained in the procedures, the use of devices, first aid and handling aggressive situations. Supervisors and monitoring staff need training on how to respond to alerts.

Example of Lone Worker

A water utility employed technicians who traveled alone to inspect pumping stations in rural areas. Many sites had poor mobile coverage, and the only safety measure was a call to the office at the end of the day. After a technician slipped down a muddy embankment and lay injured for several hours before a farmer found him, the utility reviewed its lone work arrangements.

The utility rolled out a lone worker app with scheduled check-ins every 60 minutes, GPS location and an SOS button, paired with satellite communicators for remote sites. Missed check-ins triggered calls first to the worker, then to a supervisor, then to emergency services with the worker's last known location. Entry into certain pits and wet wells was reclassified as two-person work.

Frequently Asked Questions: Lone Worker

Is it legal to work alone?

In most places, yes. Working alone is generally legal, but employers must assess the risks and put controls in place. Some high-risk tasks may legally require more than one person.

How often should lone workers check in?

It depends on the risk. Higher-risk work may need check-ins every 15 to 30 minutes, while lower-risk work may need hourly or start-and-end check-ins. The interval should be set in the risk assessment.

Are remote and home workers considered lone workers?

They can be. Employees working from home, in remote field locations or traveling alone may all be lone workers, depending on whether help is readily available.

What should happen when a lone worker misses a check-in?

There should be a clear escalation plan: attempt to contact the worker, notify a supervisor, and contact emergency services with the worker's last known location if they cannot be reached.

Part of SafetyIQ's EHS glossary: plain-English definitions of workplace health and safety terms.

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