What are the OSHA requirements for lighting?

You can read a shipping label under one light and lose it in the shadow of the next rack. That is why buying a brighter fixture is not the same as meeting workplace lighting requirements.

OSHA lighting requirements depend on the work and the rule that applies. Construction has a numerical illumination table. General-industry rules address particular conditions, including exit routes and forklift lighting; the construction table is not a universal minimum for every workplace.

Start by identifying your setting. Then measure the light where people need to see—not just directly beneath a fixture.

Start with the work, not a single OSHA lighting number

The numbers below are from federal OSHA rules. Also establish whether a State Plan or an applicable building or fire code adds requirements for your location.

OSHA construction lighting requirements: Table D-3

29 CFR 1926.56 sets minimum illumination for listed construction areas while work is in progress. Its Table D-3 separates the following activities:

Construction setting or activity	Minimum
General construction-area lighting	5 fc
Concrete placement, excavation and waste areas; accessways, active storage, loading platforms, refueling and field maintenance	3 fc
Indoor warehouses, corridors, hallways and exitways	5 fc
Tunnels, shafts and general underground work	5 fc*
Construction plants and shops, such as fabrication and equipment rooms	10 fc
First-aid stations, infirmaries and offices	30 fc

*Tunnel and shaft headings during drilling, mucking or scaling require 10 fc; the rule also provides a specified cap-light alternative. Use the full table for those operations.

Keep the construction scope attached to these values. A construction-site office and an ordinary office in an operating business do not become the same regulatory setting simply because both have desks.

OSHA lighting standards for general industry: match the actual task

For an operating warehouse, office or factory, do not pick a construction-table row and stop there. The useful question is: what must people see, and which rule addresses that activity?

Warehouse lighting and the forklift rule

Under 29 CFR 1910.178(h)(2), general lighting below 2 lumens per square foot—2 fc—requires auxiliary directional lighting on the powered industrial truck. This is not a blanket 2-fc lighting target for every warehouse task.

A driver needs to see the travel path. A picker needs to read a label, sometimes on a vertical shelf face. Lighting that reaches the aisle floor may leave that label in shadow. The picker can still struggle to read even when the floor reading looks acceptable. For a dock where the building light does not reach inside a trailer, our loading dock lighting guide explains the different lighting jobs.

Office lighting: readable work without screen reflections

There is no office-wide 30–50 fc requirement in 29 CFR 1910.22. That section concerns walking-working surfaces, not a desk-lighting table.

For a practical task-lighting reference, the Canadian Centre for Occupational Health and Safety (CCOHS) lists 200–500 lux for high-contrast printed material and simple bench work. That is roughly 19–46 fc: ergonomic guidance, not a U.S. OSHA office minimum.

A brighter desk can still be uncomfortable if the light reflects in the monitor. Place light so you can read the paper without seeing a bright fixture or window reflected in the screen. Increasing output without changing that reflection can make the discomfort worse.

Outdoor work and parking areas

An outdoor construction accessway, an operating loading dock and a customer parking lot serve different tasks. Do not label all three “outdoor” and apply one number. For parking projects, use our parking lot lighting requirements guide to separate property use, local requirements and lighting-design choices.

Exit routes, exit signs and emergency lighting are different jobs

29 CFR 1910.37(b)(1) requires an exit route to be adequately lit so an employee with normal vision can see along it. Section (b)(6) addresses the exit sign: an externally illuminated sign needs at least 5 fc (54 lux) on its surface. The rule separately allows qualifying self-luminous or electroluminescent signs.

If you are checking OSHA emergency lighting requirements, start with these separate questions: can people see the route, can they identify the exit, and what lighting remains available during a power failure? Have the emergency arrangement evaluated against the applicable building and fire-code requirements rather than selecting an ordinary fixture by brightness alone.

What poor lighting can cost you

A low reading matters because of what becomes harder to see. The CCOHS lighting survey guide connects poor lighting with safety hazards, reduced work quality and eye discomfort. On your site, look for three practical consequences:

Those are reasons to act before a complaint becomes a recurring work problem. They can also become an enforcement issue when poor visibility exposes employees to a recognized serious hazard.

A real OSHA lighting case: a rail yard after dark

In a 2012 OSHA citation involving Green Metals Recycling Texas, employees repositioned railcars at night in lighting recorded at 0.1 fc. OSHA described trip and struck-by hazards and classified the citation as serious under the OSH Act's General Duty Clause.

The record identified improved area lighting or hard-hat-mounted lights as feasible correction methods. It lists a $2,700 penalty following an April 2012 informal settlement.

The useful lesson is where to look: the place a person works, walks or moves equipment. An illuminated fixture elsewhere does not resolve poor visibility at that location. After a correction, measure there again and confirm the task can be seen clearly.

Measure where the work happens

Foot-candles (fc) and lux measure the light arriving on a surface. Lumens describe light output. A fixture's lumen rating alone cannot tell you the reading at a desk, floor or rack.

Use lux ÷ 10.764 = fc. For a quick estimate, 100 lux is about 9.3 fc. Keep the meter's unit in the record so a lux reading is not mistaken for foot-candles.

Walking route

↑ Sensor faces up

At the walking surface

Packing or desk work

↑ Sensor faces up

At the actual work surface

Reading a shelf label

← Faces out from shelf

On the vertical label plane

First identify the applicable requirement and the task's design target. They may be different. Then take readings with the lights, controls, equipment and obstructions in their normal working condition. If the area is used after dark, a daylight-only check can miss the problem.

Use a light meter suited to the lighting being tested. Put its sensor on the relevant plane, and avoid adding a shadow with your own body. Include the places people actually use: between fixtures, beside racks and where someone stands to read or inspect an item.

A reading that looks acceptable—until you check the dark spot

Consider an illustrative construction-site office where the applicable table value is 30 fc. Three example desk readings are:

Point	Meter reading	Compared with 30 fc
A	340 lux ≈ 31.6 fc	Above
B	260 lux ≈ 24.2 fc	Below—investigate
C	370 lux ≈ 34.4 fc	Above

The average is about 30 fc, but point B is still below the minimum. An average cannot erase an underlit work position. Look for the cause at B: a cabinet shadow, a blocked light or a desk outside the useful light distribution. Three readings illustrate the judgment; a full survey must cover the actual area.

Fix the cause, not just the wattage

If readings have fallen, start with maintenance: dirty lenses and failed fixtures can leave a once-usable area underlit. Keep employees' reports of dark spots, eyestrain and difficult-to-read labels in the review; they help identify where to measure.

If a rack blocks the light, more output in the same direction may leave the shadow in place. Repositioning the light or adding well-placed task lighting can reach the work instead. If the reading is adequate but people squint, investigate glare before increasing output. CCOHS's lighting guidance explains how light distribution, shielding and local lighting affect visibility.

Color quality matters when staff must distinguish wires, markings or product colors. Choose it for that task rather than treating a particular color temperature or CRI value as a universal OSHA requirement.

Controls need the same task-based thinking. A sensor that saves energy by switching off while someone is still working has created a visibility problem. A person pausing to read a label still needs light, even if they stop moving. Test arrival, normal pauses and departure—not just whether the light turns on.

After a change, repeat the readings at the affected positions under comparable conditions. Keep a short record of the location, task, measuring plane, operating conditions, benchmark, readings and correction. That makes the next review a comparison, not a fresh guess.

Turn the findings into a useful lighting brief

Before choosing replacement lights, put the dark locations and the work people do on a simple layout. Add mounting heights, existing fixtures and the target light level with its source. A supplier can then discuss where the light needs to go, rather than guessing from floor area alone.

If you need help selecting GGJIA fixtures, send our team your layout and lighting requirements. Keep emergency lighting and any specialist compliance review in the project scope; a fixture purchase alone does not establish that the installed workplace meets its requirements.

Sources

• OSHA — Green Metals Recycling Texas, inspection 315628495, citation 01001 (2012)
• 29 CFR 1926.56 — Construction illumination and Table D-3
• 29 CFR 1910.178(h)(2) — Powered industrial truck lighting
• 29 CFR 1910.22 — Walking-working surface requirements
• 29 CFR 1910.37(b) — Exit routes and signs
• CCOHS — Lighting: Survey and Solutions
• CCOHS — Lighting: General