Lone worker monitoring is the arrangement that decides what happens after an alarm is raised: who is notified, in what order, how fast, and who calls the emergency services if nobody answers. There are three models. Self-monitoring, where your own managers or a duty rota receive alerts. ARC monitoring, where a certified Alarm Receiving Centre watches alarms around the clock and escalates to 999 with a police URN. And a hybrid, where your team handles routine alerts and an ARC catches anything they miss. The right choice depends on whether someone is genuinely available to respond at every hour your people work alone.
What monitoring actually means
An SOS button is the easy part. Monitoring is everything that happens after it is pressed: the alert has to reach a person, that person has to see it and act, and if they do not, it has to move on to someone who will. A monitoring arrangement that looks fine on a quiet afternoon can fail silently at 2am, on a weekend, or when the one manager who gets the alerts is on a plane.
So the real question is not whether a system has an alarm. It is whether, at every hour one of your people is working alone, there is a named person who will receive the alarm and is able to respond. If you cannot answer that for every shift, you do not have monitoring, you have a notification.
The mechanism that makes this reliable is an escalation cascade with acknowledgement timers: the alert goes to the first responder, and if they do not acknowledge within a set time it automatically moves to the next, and the next, and finally to an ARC or the emergency services. See lone worker check-in procedures for the routine side of the same discipline.
The three models: self, ARC and hybrid
Self-monitoring means your own people respond. A buddy, a supervisor, a duty manager, following a rota. It is the cheapest model and it keeps control in-house, but it only works if someone is genuinely on and reachable for every lone-working hour. For a nine-to-five team that is realistic. For night work, weekends or a small team, it quietly is not.
ARC monitoring puts a professional Alarm Receiving Centre in the path. A certified ARC watches alarms 24/7, follows your agreed response plan, and can escalate to the police on a URN that gets a prioritised response. This is the model tenders and insurers often ask for, and it is the one that removes the single-point-of-failure of relying on one manager's phone. It costs more per worker and it is the part of the market where BS 8484 certification matters most.
A hybrid is what most mature setups land on: your team handles routine and in-hours alerts, and an ARC sits behind them as the backstop for out-of-hours and unacknowledged alarms. You keep day-to-day control and buy certainty for the gaps.
Where BS 8484 and the ARC fit
BS 8484 is the British Standard for lone worker services, and the part buyers care about most is the ARC: a monitoring centre certified to BS 8484 (often with EN 50518 for the facility) can pass a confirmed alarm to the police on a Unique Reference Number, which is what gets a faster, prioritised response. If a tender, an insurer or your own risk assessment requires that route, you need a certified ARC in your monitoring path, not just an app.
Be precise about what is certified. Some providers run their own certified ARC. Others, Vygard included, are BS 8484-aligned rather than certified and do not run their own ARC, but can escalate a confirmed alarm to a certified ARC partner so the URN route still exists when you need it. Neither is wrong, but you should know which you are buying. We set out the standard in full in BS 8484 explained and compare the options in apps and devices, BS 8484 compared.
Setting it up so it actually works
Start from the shift pattern, not the product. Map every hour your people work alone, then decide who responds in each of those hours and what the fallback is when they do not answer. That map is your escalation cascade. Build it with real names and real timers, then test it by raising a live alarm and timing how long it takes to reach a person who can act.
A monitoring setup is also only as good as the alarms feeding it. A panic button needs the worker able to reach their phone, so back it with automatic fall and man-down detection and an overdue-task timer that fires on its own, and make sure alerts still get out where there is no signal. For teams who work in blackspots, see off-grid lone worker safety.
In Vygard, this is the escalation cascade: alerts flow from buddy to supervisor to duty manager, each with an acknowledgement timer, then on to an ARC partner and 999 if nobody responds, with every step written to an audit trail. You can see it running on a live demo tenant at vygard.com/demo, and the real cost of each model is broken down in the real cost of lone worker protection.
Frequently asked questions
- What is the difference between self-monitoring and ARC monitoring?
- With self-monitoring your own managers or a duty rota receive and act on alarms. With ARC monitoring a certified Alarm Receiving Centre watches alarms 24/7 and can escalate to the police on a URN. Self-monitoring is cheaper and in-house but depends on someone always being available; ARC monitoring removes that single point of failure. Many employers run a hybrid of the two.
- Do I legally need an ARC to monitor lone workers?
- No. UK law requires you to assess and control the risk of lone working, not to use a specific product or an ARC. What matters is that an alarm reliably reaches someone who can respond at every hour your people work alone. An ARC is often the most reliable way to guarantee that out of hours, and some tenders and insurers require one, but it is not a legal requirement in itself. See our guide to lone worker law for what the law does require.
- Does Vygard monitor alarms itself?
- Vygard is a platform, not an ARC. Your own responders handle alerts through the escalation cascade by default, and for the certified route Vygard can escalate a confirmed alarm to a certified ARC partner. Vygard is BS 8484-aligned rather than certified and does not operate its own Alarm Receiving Centre.
- How fast should an alarm be answered?
- There is no single legal figure, so set a target in your risk assessment and build timers to enforce it. A practical rule is that every alarm should reach a person who can act within a minute or two, and the escalation cascade should move it on automatically if the first responder does not acknowledge. The only way to know yours works is to raise a live test alarm and time it.
Related articles
- Lone Worker Apps vs Dedicated Devices vs BS 8484 Alarm Services: What UK Employers Actually Need
- Man Down Alarms: How They Work and How to Choose
- Lone Worker Alarms and BS 8484: What Buyers Actually Need to Know
- The Real Cost of Lone Worker Protection: Apps vs Devices vs Monitored Services
- Introducing Vygard: Safety for Everyone Who's on Their Own
- Setting Up a Lone Working Check-in Procedure That People Actually Follow
Last updated 2026-10-08