Plan work area lighting beside tall utility cabinets by starting at the task surface, not the room. Look at the bench or work zone from where the worker normally stands, with the cabinets and equipment set up the way they are during real work. Then note where any shadow lands on the task.
A bright floor a few feet away tells you little about the light reaching the surface where hands and tools are. Once the shadow is mapped, its location and whether the task moves will tell you which candidate light positions or layers to compare before you choose a fixture.
Start With the Work Surface and Normal Working Position
Your first job is a baseline that reflects the work as it really happens. That means you check the task surface from the worker's point of view, with nothing moved out of the way.
- Map the work. Sketch the bench or work surface, the tall cabinets beside it, and each spot where a worker normally stands or sits. If the task moves along a counter or between machines, mark every normal position.
- Leave the setup as it is used. Keep cabinet doors, carts, and equipment where they sit during normal work. If the arrangement changes during a shift, record each arrangement as its own configuration to check.
- Look from the worker's position. Stand where the worker stands and look at the actual working part of the surface. Note any area that looks darker than the rest, and check whether the cabinet, the equipment, or the worker's own body is blocking light.
- Take a reading at the task, if you measure. Oregon DHS/OHA's light management guide offers a useful example for the state facilities it covers. It says to take measurements that reflect the actual work area without modifying it. It also says to place the sensor where the employee conducts work and to stand far enough away that your shadow doesn't interfere.
- Record where the shadow falls. Write down the shadow's position relative to the task, such as "left third of the bench" or "only at the far station." Note whether it stays put or shifts as the worker moves.
Keep visual notes and meter readings in separate columns. A visual note shows where the problem is. A reading gives you a number to compare candidate layouts at that same spot. This article doesn't set a target value, so use readings to compare options, not to declare a pass.
Use the Shadow Pattern to Choose What to Evaluate Next
The shadow you recorded points to the next comparison. Match your observation to a row below, then test candidate light positions or layers against that condition.
| What you observe | Next lighting check |
|---|---|
| Same shadow on a fixed bench | Compare candidates at that one surface, setup unchanged |
| Shadow shifts as the worker or task moves | Compare candidates at every normal task position |
| Shadow appears only with equipment in its usual spot | Include that equipment position in every comparison |
| Shadow sits only on the working part of the surface | Evaluate localized task light alongside ambient light |
| Darkness covers the whole zone, not just the task | Review general fixture positions before adding task light |
Treat each candidate position as a guess to test, not a fix. A clear view at one spot doesn't prove the whole zone works, especially when the task moves. The cabinet's height, the worker's stance, and the equipment layout all change the result, so compare each option in the real setup.
Here's an illustrative example. A maintenance tech works at a fixed bench next to a tall parts cabinet. A shadow falls across the left side of the bench only when the tech leans in to work. The useful comparison is how each candidate light position affects that left side, with the cabinet in place and the tech in a working posture. A brighter aisle doesn't count.
When the problem is confined to the task surface, a task-light layer is worth evaluating. Oregon DHS/OHA's guide describes task lighting as providing the light needed to perform a job and helping focus the eye on the work surface, alongside ambient lighting. That makes it an option to compare, not a required layer or a placement rule for cabinets. Our task-plane lighting guide compares bench, wall, overhead, and combined sources if your work is close-up. If one zone serves both storage and detailed work, see how to decide on separate task and general layers.
Verify the Layout and Fixture Inputs Before You Choose
Before you buy or install anything, put the site and fixture details into one record. That way each candidate can be judged against the shadow you actually saw.
- Site layout: Note cabinet and equipment positions, the work surface outline, and the ceiling or wall surfaces available for mounting. Add nearby obstructions such as shelving, ducts, or open cabinet doors.
- Work pattern: Record each normal worker position and viewing direction. Note whether the task or the equipment setup changes during normal work, and attach your baseline shadow notes for each configuration.
- Candidate mounting locations: Mark every place you're considering for a fixture. Next to each one, write which recorded shadow it is meant to address.
- Fixture documentation: For each specific fixture, check the spec sheet and installation instructions. Confirm mounting method, input voltage, wattage, control type, and any sensor or dimming details against your project. Don't assume a fit from a product title or category. Our commercial lighting options and LED shop light fixtures are places to start comparing documented specs.
- Project questions: List electrical and code questions for a licensed electrician and the authority having jurisdiction for your site. Circuit design, wiring, and code-compliance decisions belong with them, and requirements vary by location.
For a full walkthrough from site inputs to purchase, our commercial lighting planning guide covers the next steps. If on-site comparisons can't settle the layout, you can request a photometric lighting design from our team using the record you've built.
FAQs
What if cabinet doors or a rolling cart sit open during only part of the job?
Treat that as its own configuration. An open door or a parked cart can throw a shadow that disappears once it's closed or moved. Check the task surface in each state the work actually uses, and judge candidate lights in each one.
Is moving the cabinet a better fix than adding light?
It can be, if the cabinet can be moved without disrupting storage, access, or workflow. A new cabinet position creates a new layout, so redo the baseline before choosing fixtures. Moving the cabinet and adding light are both options to compare. Neither is the better fix by default.
What should I check if the work station includes a monitor?
Check whether a candidate task light reflects off the screen from the worker's seated or standing position. OSHA's workstation environment eTool advises placing task lighting so the light doesn't reflect on the screen. Run that check at each candidate position before you settle on one.
Do I need a light meter, or is a visual check enough?
A visual check is enough to find where a shadow falls and whether it moves. A meter adds a repeatable number at a fixed spot. That helps when you compare two candidate positions that look similar. Take every reading at the same task location so the results are comparable.
