A good worktable lighting plan treats assembly and close visual checks as two separate tasks, even when both happen at the same table. First map where each task happens, which direction you look from, and what your hands and tools block. Then judge the light at each of those spots instead of judging it by how bright the room looks.
The map doesn't decide how many lights you need. One adjustable light may cover both positions, or the close-check spot may need its own placement. What you see at the table decides which one fits.
Map Assembly and Visual-Check Positions
Start with where the work actually happens, not with the center of the table. Assembly and close checks can use different spots on the table and different viewing angles, so give each one its own entry on your map.
- Mark the assembly area. Sit or stand where you normally build. Note the patch of table where parts come together. If the project moves around as you work, mark the full range it covers.
- Mark the close-check area and your viewing direction. Note where you hold or set the piece when you examine it. Also note which way you look at it, such as leaning in from the front or tilting the part toward you.
- Note what sits in the light path. Put your hands, your usual tools, and the workpiece where they normally go. Then look at what is between your current light and each area. The Canadian Centre for Occupational Health and Safety (CCOHS) points out that objects between a light fixture and the work can block the light and cast shadows.
- Check each area for shadows from your normal working position. CCOHS lighting survey guidance advises that you look for shadows over work areas and says workers should be in their normal working positions when lighting is measured. Do this at both spots, not just the one you use most.
When you're done, the map shows where light has to land and what can get in its way. It doesn't tell you how many fixtures that takes, so hold that decision for the check further down. If most of your close checks involve tiny components, our guide to small-parts inspection lighting compares bench, wall, and combined sources for that kind of work.
Separate Room Coverage From Work-Surface Lighting
A bright room doesn't prove that your close-check spot is well lit. CCOHS describes general lighting versus local task lighting as two different roles. General lighting gives fairly even light across a large area, the way ceiling fixtures do. Local, or task, lighting raises light levels over the work itself and the area right around it. It also often lets the user adjust and control the light.
That difference matters for planning. Room coverage tells you how the space looks as a whole. Task lighting deals with the small zone where you actually examine a part. At a shared table, your head, shoulders, or the workpiece can sit between an overhead fixture and the spot you're inspecting. So the room can look evenly lit while the inspection spot sits in shade. Our guide on checking the task plane explains the same problem at a larger scale: a bright floor can hide a dim bench.
For close visual work, light has to be aimed at the place you look. In its workstation guidance for fine sewing work, OSHA notes that adjustable task lighting should shine on the work area so the worker can see the product more easily. That example comes from a workplace sewing setting, not a home shop. Still, the idea carries over to your worktable lighting plan: point adjustable light at the spot where you examine the piece, and don't count on room coverage to reach it.
This distinction tells you what to look for. It doesn't tell you how many fixtures you need, and it doesn't prove that one task light can serve both your assembly and close-check positions. You answer that question at the table.
Choose One Adjustable Source or Separate Placements
Test the adjustable light you have, or the one you plan to use, at both real positions before you decide anything. This is a practical check we suggest for a shared table. It is not a published standard or a pass/fail rule.
Aim the light at your assembly area and work the way you normally do, with hands and tools in place. Then re-aim or move the light toward the close-check area and look from your actual viewing direction. At each spot, notice whether the light reaches the work, whether your hands or tools throw shadows across it, and whether reflections off the part make details harder to see.
| What you observe | Planning implication |
|---|---|
| Light can be aimed at both work areas | One shared source may work |
| Both areas stay free of hand and tool shadows | Keep the shared setup |
| Light can't reach the close-check area | Consider a separate placement |
| Shadows stay at one area after re-aiming | Consider light from another direction |
| Re-aiming between tasks interrupts your work | Consider separate placements |
Use the table to read what you saw, not to pick a winner ahead of time. If the shared light passes at both positions, you have no reason to add hardware. If one area keeps falling short, CCOHS lists more reflected light and local lighting as ways to get rid of shadows. Deciding whether that means a second, separately placed light is your call, based on what happens at your table.
If you end up adding a source, decide whether it should stay put or move with the work. Our comparison of portable vs. fixed work lighting covers trade-offs like mobility, access, shadows, and power. If you need a light you can carry between positions, our portable LED lights are one place to start. Check the current product details against what your map showed before you buy.
FAQs
Should I redo the shadow check after I rearrange the table?
Yes. The check only holds for the positions, tools, and light placement you tested. If you move a vise, add a shelf, change your chair height, or start inspecting from a new side, update the map and look for shadows again at both the assembly spot and the close-check spot. A setup that passed before may not pass after the change.
Does it matter whether I sit or stand during the check?
It does. CCOHS lighting survey guidance says people should be in their normal working positions when lighting is measured, because your body position changes what blocks the light. If you sit to assemble and stand to inspect, test each task in the posture you actually use for it. Don't test both from one position.
Do the OSHA and CCOHS pages set lighting rules for a home workshop?
No. The OSHA page is workplace guidance for fine work at sewing-related workstations. CCOHS is a Canadian occupational health resource. This article uses them for practical ideas: room versus task lighting, aiming light at the work, and checking for shadows. Neither one sets a fixture count or a brightness target for your worktable lighting plan.
