You’re in a ceiling cavity, arm above your head at a bad angle, drilling through a noggin that’s two centimetres from where you need it. Neck bent sideways to fit the space, shoulder pushed up into the joist, drill fighting back every rotation. You do it for twenty minutes, come down, and the shoulder is already aching.
That’s before the afternoon’s cable runs. Before carrying the drum up the ladder. Before the second fix on the boards overhead.
Electricians have some of the highest rates of shoulder injury of any trade — and it’s not hard to see why. The shoulder is the most mobile joint in the body, which also makes it the least stable. Put it in a compromised position and load it repeatedly, and something eventually gives.
What overhead work actually does to your shoulder
When your arm is above shoulder height, the space underneath your shoulder blade narrows. There’s a small gap — the subacromial space — where your rotator cuff tendons and a protective bursa sit. Every time you lift your arm overhead, that gap closes slightly. Do it once, no problem. Do it three hundred times a day, every day, with a drill or a cable drum in your hand, and the structures inside that gap get compressed, irritated, and eventually inflamed.
Working in tight spaces makes it worse. When you can’t get your arm into a clean overhead position — because the ceiling’s too low, the joist’s in the way, or you’re twisted to reach — your shoulder is working in a position it wasn’t designed to load. The muscles compensate, the tendons take more strain, and the wear accumulates faster than it would in an open position.
What usually goes wrong
Sparky shoulder pain is usually one of three things — sometimes more than one at once.
Subacromial impingement
The most common. The rotator cuff tendons and the bursa get pinched in that subacromial space every time the arm goes overhead. The classic sign: a painful arc between about 60 and 120 degrees of shoulder elevation — it hurts coming up, often eases if you push through to full overhead, then hurts again on the way down. Reaching behind your back — for your back pocket, a tool belt pouch — is often sore too.
Left alone, the bursa can thicken and the tendons start to fray. It doesn’t fix itself once it’s established.
Rotator cuff tendinopathy
The rotator cuff is four muscles whose job is to keep the ball of the shoulder joint centred in the socket while you move. Repeated overhead loading — especially with the arm out to the side — overloads the tendons, particularly the supraspinatus. Pain is usually on the outside of the upper arm, worse when you lift the arm and worse the day after a heavy overhead day.
The distinction from impingement matters because the treatment is different. Tendinopathy needs progressive loading. Impingement needs the mechanics fixed first. They often coexist, which is why getting an actual assessment — not just rest — is worth it.
AC joint irritation
The acromioclavicular joint is at the top of the shoulder where the collarbone meets the shoulder blade. Overhead work, especially with the arm crossing the body — reaching across a ceiling, drilling at an angle — compresses this joint repeatedly. Pain sits right at the top of the shoulder, often with a visible tenderness point you can press directly. Putting the arm across the chest hurts more than lifting overhead.
Tradies who carry materials on one shoulder — coiled cable, tool bags — develop AC joint problems from the sustained load on that side.
Why it doesn’t settle on weekends
The structures involved — tendons, bursa, the joint capsule — have a poor blood supply. Recovery is slow. Two days off isn’t enough to undo a week of overhead loading, especially once the tissue is already irritated. Monday comes around, you go back to it, and the irritation resets or gets slightly worse.
This is how “it aches sometimes” becomes “it aches all the time.” The window where it would have settled quickly is usually the first three or four weeks. After that, you’re dealing with established tendinopathy or bursitis that needs active treatment — not just rest.
What hands-on treatment does
For sparky shoulder, an effective treatment plan usually involves:
- Manual therapy on the shoulder joint and thoracic spine — restoring movement in the joint itself and through the upper back, which directly affects how much space the rotator cuff has to work in. Stiff thoracic spine is one of the most common unaddressed causes of persistent shoulder pain in tradies.
- Soft tissue work on the rotator cuff and surrounding muscles — the traps, rhomboids, pec minor, and subscapularis all tighten in response to overhead loading and restrict shoulder mechanics further. Getting into these properly is not something a foam roller does.
- Dry needling for trigger points — the upper traps and infraspinatus carry a lot of referred pain to the shoulder and upper arm. Releasing those can give quick symptomatic relief while the underlying mechanics are being addressed. More on what dry needling involves →
- Targeted rotator cuff strengthening — not generic theraband exercises. Specific loading for the supraspinatus, infraspinatus, and serratus anterior, progressed in a way that fits around the demands of your working week.
- Scapular control work— the shoulder blade is the platform your arm moves off. If it’s not tracking correctly — which it often isn’t in overhead workers — the rotator cuff compensates and the impingement gets worse.
Practical changes on the job
- Change your arm position regularly during overhead work. Sustained end-range loading is what causes the most damage. Coming down and switching sides every 10–15 minutes, even briefly, breaks the compression cycle.
- Use a step or hop-up to raise your working height. A lot of overhead shoulder strain comes from drilling or running cable just above shoulder height — the worst position for the subacromial space. Getting up higher so the work is closer to your hands reduces the compression significantly.
- Carry cable drums in front, not on one shoulder. The sustained downward load on one AC joint over the course of a day is significant. Two hands, front carry, is harder work but easier on the shoulder.
- Set down the drill between holes.Holding a heavy drill out at arm’s length between drilling positions loads the rotator cuff isometrically for minutes at a time. Resting it on the joist or bringing it down between holes is a small habit with a real effect.
- Warm the shoulder up before a ceiling day. A few arm circles, some band pull-aparts if you carry bands, shoulder rolls — two minutes before you go into a roof cavity reduces the shock of cold tissue going into end-range load.
When to see someone
Worth booking in if:
- Pain has been there more than three to four weeks without settling
- You’re losing sleep — pain at rest or overnight is a sign the structures are significantly irritated
- Arm feels weak overhead, or you notice the shoulder “clicking” or catching
- The pain has started spreading down the upper arm
- You’ve had it before, it went away, and it’s back again — each recurrence usually starts from a worse baseline
The tradies I see who sort their shoulder out fastest are the ones who come in within the first month. By the time it’s been going two or three years, the tendon changes are established, the compensations are ingrained, and the fix takes longer. More on why tradie pain sticks around →
The honest takeaway
Overhead work is hard on shoulders — there’s no way around that. But sparky shoulder isn’t inevitable, and once you have it, it’s not permanent. The mechanics are fixable. The tissue responds to the right treatment. What doesn’t work is waiting it out on Panadol and hoping the next job is less ceiling-heavy.
I work weekends. You don’t have to take a day off site to get it seen.