What is lone worker safety?

Lone worker safety covers the policies, tools and protocols that protect employees working without a colleague nearby. For utility fleets, that often means technicians entering substations, underground vaults, remote transmission sites or storm restoration areas where a missed check-in can become an emergency.

What is a lone worker alarm device?

A lone worker alarm device monitors an unsupervised worker's status and escalates automatically when they stop responding. For utility fleets, this means timed check-ins at defined intervals, a panic button for worker-initiated alerts and worker-down detection that triggers escalation when the worker can't initiate contact — such as after a fall or medical event in a confined space. OKAlone, available through the Geotab Marketplace , is an example designed for integration with fleet telematics.

What does OSHA require for lone worker safety?

OSHA doesn't have a single lone worker standard, but two regulations govern many utility lone worker situations. 29 CFR 1910.269 requires employers to confirm communication availability before workers enter hazardous locations. 29 CFR 1910.146 requires permit procedures and rescue plans for confined spaces like underground vaults. Willful or repeated violations carry fines up to $165,514 per incident.

What is the difference between fleet tracking and lone worker safety monitoring?

Fleet tracking monitors vehicles: location, trips, idle time and driver behavior inside the cab. Lone worker safety monitoring tracks the worker after they leave the vehicle, using timed check-ins, worker-down detection and automatic escalation when the worker can't initiate contact.

What is worker-down detection?

Worker-down detection (also known as man-down detection) automatically alerts a supervisor or dispatcher when a lone worker becomes unresponsive — without requiring the worker to press a button or initiate contact. It typically uses a combination of no-motion sensing and missed check-in triggers. For utility workers in confined spaces or after a medical event, worker-down detection is the protection layer that operates when the worker can't.

How do you keep lone workers safe in areas with no cell signal?

In no-signal environments, cellular-dependent check-ins fail first. Confirm coverage at the exact work location, including underground access points. If cellular coverage fails, set the fallback before dispatch: IOX Satellite for vehicle visibility, plus a defined callback or buddy check procedure for the worker. The plan has to be in place before the technician arrives.

What are the hazards of lone workers in utility fleets?

For utility fleets, lone worker risk is structural: the work routinely places technicians in high-hazard environments with no colleague nearby. Four conditions create the highest risk and each exposes a different gap in a standard lone worker program. Communication dead zones at high-risk sites. Substations, underground vaults and remote transmission infrastructure frequently fall outside cellular coverage. A worker who needs help can't call for it and a supervisor waiting for a check-in won't receive one. Solo long-distance driving on remote routes. Utility technicians responding to outages or infrastructure calls often drive long distances without another vehicle nearby. A medical event or collision on a rural highway may go undetected for hours. After-hours substation and infrastructure work. Emergency repairs don't follow business hours. Workers dispatched at 2 a.m. after a storm may be alone at sites with no nearby support and no one monitoring their check-in. Storm restoration in unfamiliar territory. During large-scale outage events, crews may work outside their normal coverage areas: faster, in worse conditions and at unfamiliar locations.

Driver Safety

Lone worker safety for utility fleets: A checklist for the sites beyond cellular reach

The checklist below is a self-assessment tool for identifying gaps in your lone worker safety program — not a compliance form. Work through it at the sites where your workers are most exposed.

By Geotab Team

Aug 24, 2026

Utility technician in a high-visibility jacket holding a tablet beside a service van at a remote work site

Key Insights

Telematics systems are great for telling you where your lone workers are when they’re driving, but once a technician walks away, they become invisible, especially in spotty cellular zones.
Fleet monitoring and lone worker safety require different protocols and systems that provide the best protection when they talk to each other.
A check-in procedure without coverage verification, dead zone contingencies, in-vehicle protection and automatic escalation increases risk in the most hazardous situations.

A crew truck pulls into a remote substation at 7:43 a.m., a site your coverage map shows as served but where the underground access has no signal. Your fleet management platform logs the arrival: location confirmed, trip complete. The technician, working alone, shuts off the ignition, grabs their tools and walks toward the confined space access.

At 8:23 a.m., they haven’t checked in. At 8:47 a.m., they don’t respond to radio contact. At 9:26 a.m., someone drives to the site to look for them. After work hours, there may be no one to send.

The moment a worker steps away from the vehicle, their supervisor has no way to track them. The check-in protocol that worked on every routine workday breaks down the moment cellular coverage does.

The checklist below works through the five gaps: coverage verification, check-in protocols, dead zone contingencies, in-vehicle protection and escalation.

Download the checklist here.

Lone worker safety checklist for utility fleets

A. Pre-deployment verification

Before dispatch to a remote site, confirm whether the site has cellular coverage and what the fallback is. Carrier coverage maps are a starting point — not a confirmation. Underground access, building interference and rural signal variability don't appear on maps.

Coverage is confirmed for every remote or high-risk site before dispatch — not assumed from carrier maps
Sites with confirmed dead zones are flagged in dispatch records so the same assumption isn't made twice
Underground and confined space access points are assessed for coverage separately from surface coverage at the same location
Lone worker protocols extend to temporary, contract and mutual-aid workers — not just permanent staff

B. Check-in protocols

Once coverage is confirmed, define the check-in protocol before the worker leaves. A check-in procedure without an escalation trigger is a log, not a safety net. Effective protocols define how often a worker checks in, what happens when an interval is missed and who initiates the response.

Check-in frequency reflects task risk — workers entering confined spaces or working near energized equipment check in more often than those on routine site inspections
Each check-in has a defined escalation trigger: a specific number of missed intervals initiates a response, not a supervisor's judgment call
Workers entering permit-required confined spaces have a dedicated entry and exit check-in, separate from route check-ins
The check-in system generates a timestamped audit trail — every interval, every missed check-in, every escalation — retrievable for OSHA inspection

C. Dead zone contingencies

For sites with confirmed coverage gaps, define the alternative before the worker arrives: satellite communication, a predetermined callback window or a buddy check procedure.

Every site with confirmed dead zones has a written contingency: vehicle-level satellite connectivity, a predetermined callback window or buddy check procedure
The contingency is confirmed with the worker before dispatch — not introduced after the first check-in fails
Sites with intermittent cellular coverage are treated as dead zones for planning purposes — not assumed to be reliable

D. In-vehicle protection for solo drivers

A worker may be incapacitated before reaching the work site. Worker-down (also known as man-down) detection and automatic collision notification extend protection to the drive itself. For solo drivers on remote routes, that's the part of the workday most lone worker programs don't cover.

A worker-down device or no-motion detection system is active for solo long-distance routes
Automatic collision notification is enabled and routed to a contact who can initiate a response — not just logged in the platform
Solo drivers on remote routes have a defined transit check-in requirement, separate from the on-site check-in

E. Emergency escalation

When a worker misses a check-in, escalation should be automatic. The procedure should define who is notified, in what order and with what information: last known location, site details and emergency access.

Escalation is automatic — a missed check-in triggers a defined notification sequence without requiring a supervisor to initiate it
First responders and internal contacts receive the worker's last known location, site details and emergency access information at the time of escalation
Escalation procedures have been tested with a live drill at a remote or dead zone site — not only reviewed in a tabletop exercise

Design for the hard day, not the easy one

If your lone worker program depends on cell coverage, it misses the most dangerous situations.

The substations, underground vaults and storm restoration sites where utility workers face the highest exposure are exactly where standard check-in protocols break down.

Work through the checklist at the sites where your workers are most exposed.

How Geotab closes the gaps

When solo drivers are on remote routes, the GO Focus Plus AI dash cam detects fatigue and distraction during long drives to remote sites and sends an automatic collision notification to a designated contact.

For check-in intervals, worker-down detection and escalation, OK Alone Open in new window is a lone worker protection app that integrates with Geotab’s telematics platform. OK Alone provides timed check-ins at defined intervals, worker-down detection for situations where the worker can't initiate contact and a panic button for worker-initiated alerts. On a missed check-in, OK Alone escalates automatically, logging the last known location and every missed response with a timestamp.

For sites with confirmed dead zones, Geotab’s IOX Satellite Open in new window add-on provides vehicle-level satellite connectivity so the crew vehicle remains visible beyond cellular range, with location updates every 15 minutes and an in-vehicle emergency trigger for driver-initiated distress alerts.

For ENMAX Power, a 500-vehicle utility fleet in Alberta, that capability made the difference when a driver was involved in a collision on a remote route. Geotab immediately alerted a fleet manager and helped first responders locate the vehicle.

For a complete picture of how Geotab supports utility fleet safety, including storm response, emergency readiness and regulatory compliance, download Storm-ready starts here: Five gaps every utility fleet must close.