The lone working sites don't put on the plan
Construction is thought of as a crowd — but the dangerous minutes are usually the solo ones. The first operative on site before dawn, the last one locking up after everyone's gone, the groundworker on a quiet plot, the maintenance engineer in a plant room, the surveyor walking an empty phase. The gang is planned; the person working alone at the edges of the day rarely is.
That matters because construction is one of the highest-consequence environments there is. When something goes wrong on a live site and no one's watching, the difference between a scare and a fatality is how quickly help arrives.
Where the risk actually sits
Four situations account for most lone-worker incidents on site. A fall — from height, into an excavation, on scattered ground — where the operative is injured and can't reach a phone. Plant and machinery, where an accident leaves someone trapped or unconscious. Confined spaces and hazardous atmospheres, where collapse can happen silently. And out-of-hours exposure — an empty site with poor lighting, no colleagues, and sometimes hostile visitors.
What a solution has to do on site
It comes down to four jobs. A one-tap SOS the operative can trigger deliberately. Automatic man-down and fall detection for when they can't press anything — the incidents that kill on construction sites are exactly these. An accurate location so responders reach the right part of a large or multi-phase site. And a monitored response with a real escalation chain, so the alarm reaches someone who acts within minutes, not a notification nobody sees. Cover three and miss the fourth and you've protected the easy cases and left the fatal ones exposed.
The compliance layer construction actually needs
Construction carries a heavier paperwork load than most sectors, and a good lone worker platform should carry it for you. Permit-to-work for confined space, hot work and work-at-height; a clock-on gate that blocks an operative whose ticket or induction has lapsed; toolbox-talk records with tracked completion; and an audit trail of every alarm and response ready to export for a RIDDOR report or a CDM review. Under CDM 2015 the duty to plan and manage safety is explicit — evidence that lone workers are monitored and protected is part of demonstrating it.
Fitting it around real site work
It has to survive site conditions: carried on the phone the operative already has, paired with a rugged smartwatch for fall detection on the wrist, working where signal is patchy, with interval check-ins so a missed 'I'm still OK' from a lone groundworker is noticed rather than assumed. Vygard runs this as a construction sector pack on one platform — reliable SOS, man-down and monitored response, plus permit-to-work, toolbox talks and the clock-on gate, with Howie, an AI dispatcher copilot that briefs the responder in seconds.
Where to start
Begin from the realistic worst case on your sites — a fall in an excavation before the gang arrives, a plant incident at lock-up, a confined-space collapse — and check any solution against the four essentials, above all the response chain. If you'd like to see how Vygard handles SOS, fall detection, permits and monitored response for construction, book a demo or talk to our team and we'll walk it through against your site risk assessments.
Frequently asked questions
- Do we really have lone workers if sites are usually busy?
- Almost always, yes — just not on the plan. First on, last off, single operatives on quiet plots, plant-room and confined-space work, out-of-hours security and maintenance. The lone minutes on a construction site are among the most dangerous, precisely because no one's watching when they go wrong.
- How does this fit with CDM and RIDDOR?
- A good platform gives you the evidence layer: permit-to-work records, induction/ticket gating, toolbox-talk completion, and a timestamped audit trail of every alarm and response. It doesn't replace your CDM plan or risk assessments, but it demonstrates that lone workers are monitored and protected in practice, and it makes RIDDOR reporting faster.
- Is a phone app robust enough for site, or do we need dedicated devices?
- A phone the operative already carries, paired with a rugged smartwatch for fall and impact detection, covers the essentials well — discreet SOS, automatic man-down, location and check-ins. What matters is that it does all four jobs reliably in poor signal and lands with a real, monitored response, not the hardware badge.
Last updated 2026-09-17