When a nail count becomes the job
A count is attractive to managers because it is simple: nails can be tallied, compared across shifts, and tied directly to pay. But the tally stands in for something harder to measure—useful work. Once workers are rewarded for the count itself, the measure stops being a neutral record and becomes a target they can optimize.
That changes the factory’s incentives. A worker choosing between making one durable nail and several tiny ones may earn more from the tiny ones, even though they do less of what the factory actually needs. The worker need not be careless or dishonest; the pay system has made the wrong outcome the rational one.
The number rises while the product fails
The result is a gap between measured output and useful output. More pieces leave the workbench, but the count says nothing about whether they fit their purpose. If managers rely on that number alone, they may mistake apparent productivity for real improvement—and keep rewarding the behavior that widens the gap.
A better measure has to account for usefulness, not just quantity. That might mean checking whether nails meet the required size and quality, or weighing output against defects. Such checks add work and judgment, so no single number is perfect. The important point is to avoid letting a convenient count stand in for the whole goal.
Tie pay to the wrong tally, and the factory can become impressively productive at making nails nobody can use.
