Working Alone: What OSHA Expects When One Employee Is the Whole Shift

Somebody at your business works alone. Maybe it's the tech who opens the shop at 5:40 and has the bays to himself for two hours before anyone else arrives. Maybe it's the closer who counts the drawer after the last customer leaves, the driver who spends the whole day between stops, or the service tech who disappears into a customer's crawlspace while the homeowner is at work. In a company of eight people, solo work isn't an exception to the schedule — it is the schedule. And most small business owners have never asked the question that matters: if that person gets hurt at 5:50 in the morning, how long before anyone knows?

That question is the entire subject of lone worker safety. The hazard a person faces alone is usually the same hazard they face on a full shift — the ladder is no taller, the saw no sharper. What changes is what happens after something goes wrong. A fall that means an embarrassing story and an ice pack when a coworker is ten feet away can mean something much worse when nobody finds you for three hours.

There Is No Lone Worker Standard — and That's Not the Good News

Search the general industry standards for a rule about working alone and you won't find one. OSHA has never issued a general standard that says how often a solo employee must be checked on, what tasks can't be assigned to a single worker, or what a check-in procedure must look like. Some owners hear that and relax. That's the wrong lesson.

What fills the gap is Section 5(a)(1) of the OSH Act — the General Duty Clause — which requires every employer to furnish employment and a place of employment free from recognized hazards that are causing or are likely to cause death or serious physical harm. "Recognized" is the word that should get your attention. The danger of a worker being incapacitated with no one to help is not an obscure or novel idea; it's recognized across industry guidance, insurance requirements, and common sense. When something goes badly wrong for an employee working alone, the absence of a specific standard doesn't leave OSHA with nothing to say. It leaves the agency asking what you knew about the risk and what you did about it — and "we never really thought about it" is not an answer that ages well in an inspection file.

The Jobs OSHA Already Says Can't Be Done Alone

While there's no general lone worker rule, several specific standards quietly make certain solo jobs non-compliant on their face. If any of these tasks happen at your business, the two-person question has already been answered for you.

Permit-required confined space entry is the clearest case. Under 29 CFR 1910.146, entry into a permit space requires an attendant stationed outside the space for the duration of entry operations — someone whose job is to monitor the entrant, maintain contact, and summon rescue. One employee climbing into a pit, tank, or vault while nobody else is on site isn't a lean staffing decision; it's a violation of the standard's basic structure.

Respiratory protection has a parallel rule. When employees work in atmospheres that are immediately dangerous to life or health, 29 CFR 1910.134(g)(3) requires at least one employee located outside the IDLH atmosphere, with visual, voice, or signal-line communication maintained between inside and outside, equipped and prepared to perform rescue. The standby person exists precisely because a worker overcome by atmosphere cannot rescue themselves.

The pattern repeats elsewhere. OSHA's electric power generation, transmission, and distribution standard at 29 CFR 1910.269 requires at least two employees present for certain categories of work on energized lines and equipment. Most small businesses aren't covered by that standard, but it's worth noticing what these rules have in common: wherever a foreseeable failure leaves a worker unable to help themselves, OSHA's answer has consistently been a second person, positioned to act. That logic doesn't stop applying just because your industry's standard never wrote it down.

The One Place OSHA Wrote Down What Checking In Means

There is one corner of the regulations where OSHA addressed working alone directly, and even though it applies to shipyard employment rather than general industry, it's the best window you'll get into the agency's thinking. 29 CFR 1915.84 requires that whenever an employee is working alone — the standard gives confined spaces and isolated locations as examples — the employer must account for that employee throughout the shift, at regular intervals appropriate to the job assignment, and again at the end of the job or the shift, whichever comes first. Subsection (b) adds the detail that does the real work: the accounting must happen by sight or verbal communication.

Read that phrase again, because it rules out most of what passes for a check-in system at small businesses. A text message that goes unanswered until lunch is not accounting for anyone. Neither is assuming the opener is fine because the lights were on when you drove past, or noticing at 9 a.m. that the solo tech never clocked out the night before. Sight or verbal communication means a human being confirmed, in real time, that another human being is upright and responsive. And "regular intervals appropriate to the job assignment" means the frequency scales with the risk: an employee doing paperwork alone in an office and an employee changing blades alone in a fabrication shop do not warrant the same interval.

You are not legally bound by 1915.84 unless you're doing shipyard work. But if you want to know what OSHA considers an adequate check-in practice — and what an inspector would recognize as a serious one — that standard is the closest thing to an answer key the regulations contain.

First Aid Assumes Someone Is There to Give It

There's a second general industry requirement that lone work quietly undermines. Under 29 CFR 1910.151(b), in the absence of an infirmary, clinic, or hospital in near proximity to the workplace, a person or persons must be adequately trained to render first aid, and adequate first aid supplies must be readily available.

Walk through how that plays out on a solo shift. Your trained first aid responder can't treat anyone if the injured person is the responder — alone, on the floor, behind a locked door. The kit on the wall is only as useful as the person able to reach it. For businesses where the nearest emergency care is a long drive away, the problem compounds: the whole premise of 1910.151 is that when help is not close, help must be on site, and a lone worker is the one configuration where that premise fails completely. This doesn't mean solo shifts are prohibited. It means the first aid question — who helps, how fast, summoned by whom — has to be answered before the shift is scheduled, not improvised after something happens.

Building a Check-In Practice That Holds

The fix is not expensive and it is not complicated, which is exactly why it's worth doing properly instead of vaguely. Start by finding your lone workers, and look at the schedule rather than the org chart — the openers, the closers, the weekend catch-up crew, the drivers and field techs whose whole day is solo. Most owners who do this honestly find more lone work than they expected.

Then screen the tasks. Anything involving permit space entry or IDLH atmospheres is already off the table for a solo worker, as covered above. Beyond those, apply the same logic OSHA does: energized electrical work, work at height, hot work, and machine tasks with entanglement hazards all deserve a hard look before they're assigned to someone with no one else on site. Some tasks can simply wait until a second person is in the building — and rescheduling them is the cheapest control you will ever implement.

For the lone work that remains, build the check-in: a set interval matched to the task's risk, contact by sight or voice rather than an unanswered text, a written escalation path naming who calls and who drives out when a check-in is missed, and an end-of-shift confirmation every single time. Phone apps and man-down devices can help carry the load, but treat them as tools serving the procedure, not a substitute for it. Our lone worker check-in checklist walks through this same sequence — finding solo shifts, screening the tasks, and setting intervals and escalation steps — in a format you can fill in and post.

None of this guarantees a clean inspection, and no article can promise you compliance. But the difference between a business that has thought about its lone workers and one that hasn't shows up in minutes and hours — and for the person alone on the floor, minutes and hours are the whole game.