Check shared workbench lighting from both normal work positions, not from one side or from an empty bench. Keep a single light direction only if neither person sees glare in the way, light blocked before it reaches the work, or shadows on their hands or workpiece. If either side fails, try a changed or added direction before you settle on a layout.
Each person looks at the bench from a different spot. A light behind one person can fall cleanly on their task, but the same light may shine into the other person's eyes. It can also be blocked by their head and shoulders. Run the check from each side, with real tools and parts on the bench.
Decide Whether One Light Direction Works From Both Sides
One light direction is enough only when it passes from each normal position with the real task set up. If one side fails, that side needs a different or added direction, even when the other side looks fine.
Set the bench up the way you actually use it. Put out the usual tools, a typical workpiece, any clamps or vises, and anything stored on fixed shelves above the bench. Leaving these out can hide the problem. Lighting guidance from CCOHS notes that obstructing objects can cast shadows, and it says to check lighting from workers' normal positions against the tasks they really do.
How you share the bench changes the test:
- Both people at once: Both people stand or sit in their usual spots during the check. The person across the bench can block light or catch glare that one person alone would never notice.
- One person switching sides: Check each side on its own, using the task you normally do from that side. Sanding on one side and fine assembly on the other can put different demands on the same light.
Use this table at each position. Work through it for one side, then repeat it from the opposite side.
| What you notice from a normal position | What it indicates | Decision |
|---|---|---|
| Bright fixture or shiny reflection in your line of sight | Glare that gets in the way of seeing | Fail for this side |
| Light stops at a head, shelf, or clamp before reaching the work | Blocked light path | Fail for this side |
| Hands or the workpiece sit in shadow | Shadow on the task | Fail for this side |
| Clear view of the task, no shadow on hands or parts | Direction works from here | Pass; check the other side |
Here's an illustrative example. One person planes a cabinet door on the near side while a partner assembles a drawer on the far side. A single overhead light behind the near-side person lights the door well. The partner, though, looks almost straight into that light and works in the shadow of their own hands. The near side passes and the far side fails, so the current direction doesn't work for this bench as set up.
When both sides pass, keep the current direction for those tasks. A pass is a practical visual check, not a measured light level. Repeat it if you add a new task, move storage, or change who works where. To make each side's check more consistent, the CCOHS lighting ergonomics checklist gives a short list of glare, reflection, and shadow items you can run at each position.
If One Side Fails, Test a Different Direction
Fix the specific problem the failing side found, then recheck both positions before you mount anything permanently. Adding more lights automatically can solve one side and create a new problem on the other.
- Name the failure and the side. Write down whether the problem was glare, blocked light, or a task shadow, and which position saw it.
- Change one thing at a time. Move or re-aim the light so the bright source or reflection leaves the failing person's line of sight. Or shift the light's path so it no longer crosses that person's head, a shelf, or a clamp. Changing one thing at a time shows you what made the difference.
- Repeat the same task. Use the same tools and workpiece and check both sides again. If you work at the same time, both people need to be in place.
- Try a second direction if shadows remain. CCOHS describes how local lighting can be one way to address task shadows, along with fixtures placed to suit the work. Test the new direction with a light you can move, such as a portable LED work light, before you commit to a fixed position.
- Keep only changes that help without hurting. An adjustment stays if it clears the failing side and causes no new glare, blockage, or shadow on the opposite side.
Fixed storage can limit your options. If a shelf or a mounted vise blocks the path from every workable spot on one side, a single direction may not be practical for that task. That's a finding about this bench and this task. It doesn't mean every shared bench needs more than one fixture.
When you're ready to choose a permanent setup, our broader workbench lighting guide compares fixed, portable, and mixed lighting for a bench. If shadows show up around the whole room and not just at the bench, our article on reducing shadows across a workshop covers the overhead side. In a long, narrow shop, see how fixture length affects light uniformity before picking ceiling fixtures to go with your bench lighting.
FAQs
How can I tell whether glare is coming off a shiny workpiece?
Stay in your normal working position and briefly shade the light that reaches the part, using a sheet of cardboard or your hand. If the bright patch on the metal, glossy finish, or glass disappears, the glare is reflecting off the workpiece and not coming straight from the fixture. CCOHS describes simple glare checks from a normal work position along these lines. With a shared bench, repeat the check from the other side, because the reflection can reach one person's eyes and miss the other's.
Can a small mirror help find an overhead reflection?
Yes. Lay a small mirror face up on the spot where you work. Then look at it from your usual position. If you can see a light fixture in the mirror, that fixture can bounce off glossy surfaces at that spot and into your eyes. Move the mirror to the other person's work area and repeat the check from their side, since each sight line picks up different reflections.
Do I need a light meter to check a shared bench?
Not for this decision. The keep-or-test check above is a visual one: can each person see their task without glare, blocked light, or shadows? A light meter belongs in a measured lighting survey, where readings are taken at work positions and compared against a target for the task. If you take readings, use them to compare the two sides of your bench. Don't treat a general room-lighting figure as a target for a specific bench task.
