The most radical experiments in self-management ask people to set or see everyone's pay, an idea that draws admiration and terror in equal measure. Skeptics predict envy, gaming and collapse. Enthusiasts promise fairness and trust. Both camps tend to argue about the wrong variable. The question is not whether salaries are open. It is whether the logic behind each salary is open too. Strip a number of its justification and transparency becomes a provocation. Attach the reasoning and the same number becomes information people can live with.
Justifiability is the load-bearing beam
The most useful evidence for anyone designing open pay comes from a factory floor, not a startup. Breza, Kaur and Shamdasani (2018) ran a month-long field experiment with manufacturing workers in India, randomizing whether teammates on similar tasks earned equal or differentiated daily wages. When the productivity difference between coworkers was hidden, pay inequality cut output by about 0.45 of a standard deviation and attendance by roughly 18 percentage points, and it corroded cooperation even when helping a colleague was in the worker's own interest. Then comes the finding that should reorganize the whole debate. When workers could observe that the better-paid colleague was genuinely more productive, the identical pay gap produced no adverse effect at all. The problem was never the inequality. It was the inequality nobody could account for. It is worth sitting with how strong that result is. This was a randomized field experiment, not a survey, and the outcome variables were hard behaviors, output and attendance, not opinions. When the researchers made the productivity difference visible, an inequality that had been poison became a non-event. For anyone building open pay, that is the whole game compressed into one experiment: the reveal is safe to the exact degree that the reason is available.
What breaks without a rationale
Without visible reasons, open pay defaults to the worst dynamics of horizontal comparison. Card, Mas, Moretti and Saez (2012) found that when University of California employees gained access to a public salary database, those who learned they were below their unit's median became less satisfied and more inclined to look elsewhere, while those above it felt no better. A self-set-pay regime that simply publishes what everyone chose, with no shared standard for what a role or a contribution is worth, hands every below-median person that grievance and gives no one an offsetting lift. Cullen (2024) frames this as the difference between kinds of transparency: horizontal comparison, peer against peer, tends to reduce effort and satisfaction precisely when it exposes disadvantage. Openness without a framework is horizontal transparency at full volume.
The vertical clue
There is a constructive lesson hiding in the same literature. Cullen and Perez-Truglia (2022), studying 2,060 employees at a Southeast Asian bank, found that people underestimated their managers' pay by 14.1 percent on average and worked harder once they learned the true, higher figure, with a 10 percent rise in perceived manager pay lifting hours over the next 90 days by about 1.5 percent. A larger salary up the chain motivated because it signaled a return to effort and advancement. The instructive part for open-pay designers is that a number lands well when it comes attached to a story about why it is earned and what it means for the future. Open pay can borrow that mechanism by publishing not just the amounts but the ladder, the criteria and the path that connects contribution to compensation.
The practical read
If you are going to let people set or see all salaries, spend your effort on the rationale, not the reveal. Define what a role is worth and what evidence moves someone within a band, and make that evidence as visible as the pay itself. A gap that anyone in the room can explain in one sentence, this person ships more, mentors more, carries the harder accounts, is a gap the room will accept. A gap that ends in a shrug is the one that quietly drains attendance, output and goodwill. Openness is not the achievement. Legibility is. Show the numbers by all means, but never show them naked.
Sources
- Breza, Kaur and Shamdasani (2018). The Morale Effects of Pay Inequality. Hidden pay gaps cut output, attendance and cooperation, but gaps workers could see were justified by productivity had no adverse effect, making justifiability the decisive variable for open pay. https://academic.oup.com/qje/article-abstract/133/2/611/4430649
- Card, Mas, Moretti and Saez (2012). Inequality at Work: The Effect of Peer Salaries on Job Satisfaction. Access to peers' salaries lowered satisfaction and raised quit intent among the below-median with no gain above, showing what unexplained horizontal openness costs. https://doi.org/10.1257/aer.102.6.2981
- Cullen and Perez-Truglia (2022). How Much Does Your Boss Make? The Effects of Salary Comparisons. Learning a manager's true, higher pay raised effort because it signaled a return to advancement, illustrating how a number lands when tied to a rationale. https://doi.org/10.1086/717891
- Cullen (2024). Is Pay Transparency Good? The review shows horizontal comparison reduces effort and satisfaction when it exposes disadvantage, warning that openness without a framework is horizontal transparency at full volume. https://doi.org/10.1257/jep.38.1.153