Lone Worker Risk Assessment: How to Protect Employees Who Work Alone

A lone worker risk assessment answers one question: if something goes wrong while this employee is alone, how long before someone notices and can help? In the United States, OSHA has no general standard on working alone, but the General Duty Clause requires employers to protect employees from recognized hazards, and working alone makes many hazards more serious. This guide shows how to assess the risks of working alone in five steps. For the legal framework and a lone worker policy template, see our page on lone worker safety in the U.S.

Why Working Alone Increases Risk

Working alone is not dangerous in itself. It becomes dangerous when an incident happens and nobody is there to give first aid, call for help or raise the alarm. A fall, a medical emergency or an assault that a colleague would notice in seconds can go unnoticed for hours, and the first minutes after a serious accident often decide its outcome.

Working alone also makes some incidents more likely: nobody holds the ladder, spots a mistake or helps calm an aggressive customer.

Step 1: Identify Who Works Alone, Where and When

List every job, site and shift where an employee is out of sight or earshot of colleagues, even for part of the shift. Typical cases include night and weekend shifts, field and maintenance technicians, home visits, drivers, security patrols, cleaning crews, employees in remote buildings or plant rooms, and employees who work from home.

Step 2: Identify the Hazards

• The task: work at height, electricity, machinery, confined spaces, hazardous substances, handling cash.
• The environment: remote or isolated sites, poor or no cellular coverage, heat or cold, poor lighting, traffic.
• Contact with the public: aggressive customers, patients or residents, home visits, late-night opening hours.
• The person: experience, training, fatigue, and any health condition the employee chooses to disclose.

Step 3: Evaluate the Risk and the Time Before Help Arrives

For each situation, rate how likely an incident is and how serious it could be. Then add the question that matters most for lone workers: how long would it take for someone to notice and reach the employee? A hazard with a low probability becomes a high risk if help could take hours to arrive.

Examples:

• A technician alone in a plant room at night: risk of a fall or electrical injury, and nobody would notice before the next morning. High risk.
• A housekeeper alone in a guest room: risk of assault, help is minutes away if she can raise the alarm. Medium risk, reduced by a wearable panic button.
• An office employee working late: risk of a fall on the stairs or a medical emergency, and nobody would notice before the next morning. Medium risk, reduced by automatic fall detection.

Step 4: Choose Control Measures

1. Eliminate lone work for the highest-risk tasks, such as permit-required confined spaces or live electrical work. Some OSHA standards already limit work done alone.
2. Reduce exposure: move tasks to staffed hours, pair employees, shorten the time spent alone.
3. Set procedures: sign-in and sign-out, scheduled check-ins with an interval adapted to the risk, and a clear response when a check-in is missed.
4. Train employees and supervisors on the hazards, the procedures and the equipment.
5. Equip employees with a way to call for help that works even if they cannot use their hands or speak: a lone worker app with fall and no-motion detection, a wearable panic button, or a satellite device where there is no cellular coverage.

Our page on lone worker safety devices compares the options.

Step 5: Plan the Response and Review the Assessment

A device only protects an employee if the alert reaches someone who can act. Decide who receives alerts, in what order, how fast they must respond and when to call 911. Write it down in your lone worker policy and test it. Review the assessment at least once a year, after every incident or near miss, and whenever jobs, sites or equipment change.

How Neovigie Supports Your Risk Assessment

VigieApp turns employees' smartphones into lone worker alarms: SOS button, fall and no-motion detection, and a Lifeline timer that raises the alarm if the employee does not reset it in time. Alarms go to the supervisors you designate, with the employee's location, and escalate until someone responds. In the VigieControl web platform, supervisors review the alarm history to see which situations trigger alerts and adjust settings and procedures. Learn more about our lone worker app.

Key Takeaways

• Working alone is not dangerous in itself; the risk comes from the time it takes for help to arrive.
• Assess each situation in five steps: who works alone, the hazards, the risk and response time, the controls, the response plan.
• Eliminate lone work for the most dangerous tasks, and equip employees with an alarm that works even if they cannot call.
• Review the assessment every year and after every incident.