Deploying connected worker technology in hazardous environments costs money. That's the easy part to measure. What's harder, and what most organisations get wrong, is calculating what it gives back.
In oil and gas, offshore, and chemical processing, the argument for connected workers often stays abstract. Better visibility, improved safety culture, faster response times, etc. These things matter, but they're difficult to put a number on, which makes them hard to defend in a procurement conversation.
The ROI is quantifiable. You just have to know where to look.
Before measuring returns, it helps to be precise about what we're measuring.
A connected worker in a hazardous environment is someone who carries a device (often a ruggedised, explosion-proof or intrinsically safe rated phone) that keeps them linked to real-time data, supervisors, and automated systems while they work in classified zones. Zone 1, Zone 2, Zone 21, Zone 22: the categories vary, but the need is consistent. Workers need communication and data access without introducing ignition risk.
The device itself is only part of it. The ROI comes from what the worker can do because they're connected: access digital permits, report near-misses in real time, receive updated procedures, confirm lone worker check-ins, and communicate without having to return to a control room.
This is where the numbers start to take shape.
Permit-to-work and documentation time.
Manual, paper-based permit-to-work systems are slow. A shift can lose 30 to 45 minutes per worker per day to permit collection, sign-off chasing, and re-verification. Digitise that process and give workers access to live documentation on a certified device, and you recover that time. Across a 20-person team over a year, that adds up to thousands of productive hours.
Incident response.
When something goes wrong in a hazardous area, the speed of response matters enormously. A worker who can communicate directly from the point of incident, rather than walking to a safe area to raise an alarm, can cut response times significantly. Studies from the offshore sector have put average incident response improvement at 40% or more when workers are genuinely connected in the field.
Lone worker monitoring.
Many operations run manual check-in processes for lone workers: a supervisor calls at intervals, or the worker is expected to report in. Miss a check-in and you don't always know if it's a welfare issue or a radio left in a locker. Automated lone worker monitoring via a connected device eliminates the ambiguity and the manual overhead. It also reduces the supervisory resource required to manage compliance.
Reduced travel between work zones and control areas.
In large facilities like refineries, chemical plants, and offshore platforms, the physical distance between work zones and control rooms is significant. Workers who can access work orders, sign off tasks, and communicate digitally from where they're standing don't need to travel back and forth. Even modest reductions in that travel time produce measurable output improvements.
Efficiency and safety are often treated as separate categories, but in hazardous environments, they're not.
Every recordable incident carries direct costs: investigation, lost time, regulatory reporting, and in serious cases, legal liability. The indirect costs (reputational impact, insurance premiums, productivity disruption) typically run two to four times the direct figure. A single serious incident on a major facility can cost millions before the investigation closes.
Connected worker technology reduces incident rates. That's documented across the sector. When workers have access to real-time hazard information, can report near-misses instantly, and are automatically monitored for welfare, the conditions for accidents narrow.
Putting even a conservative figure on incident reduction, say one prevented recordable incident per year at a mid-size facility, can justify the technology investment on its own.
Of course, none of this works if the technology can’t actually be used where workers are standing.
Half of that equation is whether the equipment is suitable for the environment. Needless to say, mobile devices in the field need to be suited to the ATEX zone that they are being utilised in. The other half of the equation though is often overlooked. Usability is just as essential. If the device is difficult to use, slow, or unfamiliar, adoption drops. And if adoption drops, the return disappears.
An iPhone, when deployed in a certified Xshielder case, changes that equation. You’re combining a device people already know how to use with the certification required for hazardous environments. There’s no learning curve, no resistance, and no need to “convince” workers to carry it. They already trust the platform.
That drives immediate adoption. And adoption is what turns capability into measurable return.
Beyond usability, there are hard financial factors that directly impact ROI:
A certified device that sits unused delivers zero ROI. A device that workers carry, trust, and rely on every shift compounds value every day.
Want to learn more about the price of Explosion Proof and Intrinsically Safe devices?
This blog goes into detail about average prices and the ‘total-cost’ considerations you should factor in.
The inputs vary by site, but the calculation follows the same logic.
Start with daily time losses from manual processes: permit-to-work, check-ins, documentation, control room travel. Multiply that by your workforce and your daily labour cost. That's your baseline efficiency opportunity.
Layer in incident cost data. Use your own records if you have them; industry averages if you don't. Apply a realistic reduction percentage based on documented outcomes from connected worker deployments in comparable facilities.
Add operational reliability benefits: fewer shutdowns from missed procedures, faster turnaround on maintenance tasks, reduced re-work from communication gaps.
Compare that total to the cost of hardware, software, connectivity, and implementation. In most operations of any scale, the payback period is under two years. In larger facilities with higher incident histories, it's often under twelve months.