Walk into an instrument workshop at month end and the polishing wheels run hottest. Bonuses close soon. Burrs get left in serrations, ratchet teeth go out half-dressed, and a satin finish shows emery scratches under the inspection lamp. Nobody is cheating. The scheme simply pays for pieces leaving a wheel, and inspection happens later, on someone else's clock.
Incentives in device units need one shift in thinking: pay what the buyer accepts, not what the bench produces. This post walks through how to rebuild a piece rate or production bonus around that idea, across instrument benches, implant machining cells and moulding lines. Wider sector strains are set out under HR for device and equipment makers.
Where volume-only schemes go wrong
- Rejects are paid twice. A polisher earns on a scissor, inspection fails it, a second polisher earns again on the rework.
- Care looks like slowness. A senior fitter who adjusts every box-lock by thumb lands below a helper who skips that step.
- Inspectors face pressure. When a failed lot cuts the bench's bonus, the inspector hears about it at tea.
- Records get faked to hit counts. On moulding lines, a scheme counting cavities cycled rather than parts released invites travellers written up to match.
- Teaching stops. Time spent showing a helper how to hollow-grind a blade earns nothing, so masters stop showing.
Rebuilding the scheme around acceptance
- 1
Define the counted unit
A piece counts once it clears final inspection, or for equipment, once its final test sheet is signed by a second person who never touched its wiring. Write that rule on the rate card in plain words.
- 2
Settle after inspection, not before
Close the count for each lot after the inspection record is complete. Benches see their accepted total the next morning on a board, so the delay feels short.
- 3
Trace rejects to the bench that made them
Tag each lot with its bench or cell. Rework is paid at a separate, lower rate, or done by the original bench, depending on what your adviser confirms is permissible.
- 4
Add a skill element that volume cannot buy
A fixed monthly sum for each operation a person may finish solo, such as box-lock fitting, mirror polishing or first-article setting on a sliding-head lathe. This rewards range, not haste.
- 5
Pay for teaching
Credit a master whenever a helper of theirs earns sign-off on a fresh operation. Small sums work if they are reliable and public.
- 6
Keep inspection outside the pool
Inspectors and testers get a separate reward linked to accuracy of their calls, punctual release and feedback given to benches.
What inspectors should be paid for
An inspector rewarded for throughput rushes. One rewarded for catching defects starts finding them in good work. Neither helps. Tie their extra pay to things that leave the pass decision untilted. Lots released on the promised day. Agreement between their calls and a senior's periodic recheck. Buyer complaints traced to escapes. Feedback notes handed back to benches. Whether on a CMM in an implant cell or at a profile projector beside instrument benches, a lead inspector should feel safe failing a lot an hour before dispatch.
Lines, cells and benches need different shapes
Moulding and disposables lines run as teams, so a shared line reward on released lots works better than individual counts. Individual effort is hard to see when a press, a robot picker and a packer all touch the part. The compensation benchmarking page for medical plastics makers covers how setters there compare with nearby moulders.
Implant machining cells sit between. A setter's skill decides scrap on titanium and cobalt chrome bar, which is costly stock, so skill pay matters more than piece counts. See pay benchmarking for orthopaedic implant makers. Instrument benches remain the most individual, and the pass-based rate guidance for instrument workshops shows the pass-based piece rate in that setting.
Role and bench or cell: ____________.
Counted unit: pieces accepted at final inspection (or final test signed by a second person).
Count closed: after the inspection record for the lot is complete.
Rate for accepted piece: ____________.
Rework rule: who reworks, and at what rate, as confirmed by your adviser.
Skill element: operations this person may finish solo, with the monthly amount for each.
Teaching credit: amount per helper signed off on a new operation.
Inspector reward: on-time release, recheck agreement, feedback notes.
Where results are shown: board location and day.
Review date: after two pay cycles.Running a pilot
Pick one bench or cell with a steady order flow. Record two pay cycles under the old scheme: accepted pieces, rework hours, buyer returns. Explain the new card to that team face to face, answer every question, then run two cycles. Compare. If returns and rework fall while accepted output holds, extend it. If take-home pay drops sharply for skilled people, the skill element is too thin and needs rework before anyone else sees the scheme.
Getting help
Through compensation and rewards strategy projects we build rate cards, skill grades and inspector rewards for workshops like these. The aim is a scheme your best fitter calls fair and your newest helper understands on day one.



