Someone collapses in a locked storeroom at 11pm. Nobody knows they're there. The check-in procedure was a text message to a supervisor who had already gone to bed. This is not a hypothetical. Versions of it happen every year in Irish workplaces, and the paperwork afterwards always includes the same phrase: "procedures were in place."
Who Counts as a Lone Worker
The Health and Safety Authority defines lone workers as people who work by themselves without close or direct supervision. That covers more ground than most employers admit. Security guards. Home care workers. Agricultural contractors. Retail staff opening or closing alone. Truck drivers on long hauls. Cleaners starting at 5am. Utility workers in rural substations. The number runs into hundreds of thousands in Ireland, and the risk assessment obligations attached to each of them are identical to those covering workers in busy, supervised environments.
The Safety, Health and Welfare at Work Act 2005 does not create a separate category for lone workers. It does not need to. Section 19 requires employers to identify hazards, assess risks, and put controls in place for all workers. If a task is more dangerous because nobody else is present, the risk assessment has to say that, and the control measures have to reflect it. Ignoring the lone element is not a compliance gap. It is a legal failure.
What the Risk Assessment Has to Cover
A lone worker risk assessment is not a generic form with "lone working" written at the top. It needs to address the specific conditions of each role.
Start with the work itself. Can the task be done safely by one person? Manual handling limits change when nobody is available to assist. Machinery operation changes when nobody can raise the alarm. Some tasks, full stop, cannot be done alone. The Work at Height Regulations and the Electricity at Work Regulations both carry prohibitions on solo work in certain conditions for exactly this reason.
Then look at the environment. A lone worker in a city-centre office after hours faces different risks than one on a rural farm or in a confined space. Violence and aggression risk spikes for people who deal with the public alone, particularly in cash-handling roles or health settings. The HSA's statistics on workplace violence consistently show lone workers are overrepresented among victims.
Then look at the person. New employees, workers with certain medical conditions, and young workers all carry additional considerations when working alone. This is not discrimination. It is a documented part of the risk assessment.
Check-In Systems That Actually Work
The phrase "check-in system" has been diluted to near uselessness. A supervisor glancing at their phone once a shift is not a check-in system. Neither is "just ring if there's a problem," which places the entire burden on the person who may be unconscious, incapacitated, or too frightened to call.
An effective system has four elements. A defined schedule, meaning contact at agreed intervals rather than whenever someone remembers. A defined method, whether that is a phone call, app, or GPS location update. A defined escalation, meaning someone specific knows what to do if contact is missed and within what timeframe. And a defined action, meaning that person can and will respond, not just log a missed check-in.
Technology has made this significantly easier. Dedicated lone worker apps can send automated alerts if a worker fails to check in, detects a fall, or triggers a panic alarm. Some integrate GPS tracking. This is not surveillance for its own sake. It is the control measure that closes the gap between "something went wrong" and "someone knew in time."
The timeframe matters enormously. If a worker checks in every two hours and the escalation response takes thirty minutes, a person in cardiac arrest may have been on the floor for two and a half hours before help arrives. In genuinely high-risk roles, check-ins need to be more frequent, and the response time needs to be realistic.
What Incidents Actually Look Like
In 2019, a home care worker in the midlands suffered a serious fall in a client's home. She was alone. Her employer had a check-in policy on paper. In practice, the policy had never been enforced, no one had reviewed it since it was written, and there was no agreed escalation contact. She was found hours later by a family member. The employer received an improvement notice from the HSA. The worker spent three months in recovery.
The Irish Health Service Executive has published guidance on lone working for community staff specifically because the injury profile of home care and community health workers shows a consistent pattern: the people most isolated are the people least likely to have functioning safety systems around them. The gap between policy and practice is widest exactly where the risk is highest.
Retail incidents follow a similar pattern. Staff assaulted or threatened while opening or closing alone, often in situations where a two-person policy existed on paper but was routinely ignored because of scheduling pressure. The psychological safety consequences of repeated threatening incidents without adequate support compound quickly, and they do not show up on the incident log.
The Employer's Specific Duties
Under the 2005 Act, employers must provide information, instruction, training, and supervision. For lone workers, supervision cannot mean physical presence. It means the systems described above, functioning as designed, reviewed regularly, and known to every person they cover.
Training for lone workers needs to go beyond manual handling and fire safety. It needs to cover how to use the check-in system, what triggers an emergency escalation, how to manage aggressive situations, and what to do when something goes wrong and no one is physically there to help. First aid competence in lone workers is not a box-tick. It is a genuine operational requirement.
Document everything. Not because the HSA will definitely audit you, but because the paperwork is the proof that you thought about this seriously. A risk assessment that identifies lone working as a hazard, names the controls, assigns responsibility, and carries a review date is defensible. A blank form with a signature is not.
The test is simple. If your lone worker had a medical emergency right now, how long before someone who can actually help knows about it? If the honest answer is "hours" or "we're not sure," the system needs work. Today, not next quarter.
