The Restriction That Works Before the Court
The subject of this series is the non-compete agreement (NCA) as a labor-market constraint, not merely as a clause that may or may not survive a lawsuit. The first question is practical: can the agreement change what a worker believes they can do next, and therefore change the bargaining position behind the next wage? That question supports a more useful judgment than asking only whether a court has ruled. It asks us to distinguish the presence of a restriction from its formal enforceability, and to follow the worker’s career trajectory rather than stopping at the starting salary.
A 2026 working paper from the Federal Reserve Bank of Chicago makes that distinction unusually consequential. Using longitudinal work histories, it examines what happens when workers move between jobs and their NCA status changes. The reported pattern is not a simple verdict for or against non-competes: later wage growth is slower for low-education workers who sign one and faster for high-education workers, while effects on job tenure are imprecisely estimated for both groups. The important idea is already visible before the method and results are unpacked: one contract can alter the career ladder differently depending on the labor market around it.
The clause and the court are not the same question
A non-compete is usually discussed as a legal object. Does it satisfy the applicable rule? Can an employer enforce it? What happens if a worker joins a rival? Those questions matter, but they come late in the sequence. A worker has to decide whether to accept the job, what alternatives to pursue, whether to challenge a restriction, and how confidently to negotiate before a judge provides an answer. The practical effect of an NCA can therefore begin with uncertainty about rights rather than with a final legal determination.
The Chicago Fed paper describes NCAs as pervasive features of labor contracts, including in low-wage labor markets. It also notes that much earlier research has focused on differences in enforceability across states. That focus is informative about the consequences of legal rules, but it does not necessarily measure how often workers encounter an NCA or how they respond to one in an actual job. The paper reports that NCA use remains substantial even where enforceability is weak or absent, and that workers may comply because they are unsure of their legal position or fear litigation. These points are presented as part of the paper’s account of prior research, not as a claim that every agreement is effective or that fear is always the dominant explanation.
The distinction can be stated simply:
- Incidence asks whether the job comes with an NCA.
- Enforceability asks what the law would allow an employer to make stick.
- Practical constraint asks what the worker believes, expects, or is willing to risk when choosing the next move.
The three can overlap, but they are not interchangeable. A clause that is legally weak may still make a rival job feel costly to pursue. A legally enforceable clause may have little bite if the worker has no close competitor to join or if the agreement does not cover the relevant move. A court ruling can clarify the situation, but the worker’s decision often precedes it.
That timing changes what counts as a meaningful outcome. The question is not only whether an employer could ultimately stop a move. It is whether the worker treats a move as sufficiently risky that they do not pursue it, accept a less attractive alternative, or approach the next wage discussion with less leverage. Those responses can occur without a lawsuit and may be difficult to observe directly. A study of NCA incidence therefore measures a different part of the institution than a study of a court decision or a change in state enforceability. It is closer to the contract as experienced at the moment a worker chooses among imperfect options.
This distinction also keeps employer intent separate from worker consequence. An employer may describe a restriction as protection for training or confidential know-how, while the worker experiences it mainly as a narrower set of credible exits. Both descriptions can refer to the same clause; the evidence has to determine which consequences appear in wages and subsequent job behavior. Until then, “the agreement is enforceable” and “the agreement changes the worker’s career” remain different propositions.
The diagram is not saying that every NCA follows this path. It makes a narrower point: the upstream pathway from a perceived restriction to a worker’s choices does not require a completed court case. That is why a labor-market study can learn something important by observing job transitions and later wages, even when it does not observe litigation.
Why a higher wage can mislead
The next trap is more intuitive. If jobs with NCAs pay more, perhaps the restriction is simply being priced. A worker gives up some future mobility and receives higher pay in return. That is a coherent possibility, but an average wage difference cannot tell us whether the agreement caused the difference.
In the paper’s retained sample, NCA-covered jobs have higher average hourly wages than jobs without NCAs—about 15% higher for low-education jobs and 22% higher for high-education jobs. The share of jobs covered by an NCA is also substantial: roughly 12–13% for low-education workers and 17% for high-education workers. Those figures establish that the restriction is not confined to a tiny, highly specialized corner of employment. They do not establish that signing an NCA raises pay.
People and jobs are sorted. A worker with particular abilities may be more likely to enter a job that pays more and uses a non-compete. That job may also differ in occupation, industry, responsibilities, training, or advancement opportunities. Comparing the average wage in NCA jobs with the average wage elsewhere mixes the contract’s possible effect with all those differences. The Chicago Fed paper reports that once worker fixed effects and occupation or industry controls are imposed, the wage gap shrinks substantially and becomes insignificant. The raw premium is therefore better understood as a descriptive signal with strong selection behind it, not as a compensating differential proved by the data.
Imagine two workers accepting jobs that each include a non-compete. One moves into a specialized role with unusual training and a strong employer; the other enters a job where the restriction mainly narrows the employers they can approach next. Their starting wages might both be high relative to workers in unrestricted jobs. Yet the contract could interact with learning, bargaining, and future options very differently. The first paycheck cannot reveal which process is at work.
A level comparison also runs backward in time. If a worker is already more able, better matched to a high-paying occupation, or entering a job with more valuable training, those facts can explain both the higher wage and the presence of the NCA. Looking only at the wage after the move risks crediting the agreement for a difference that was already built into the worker-job match. Looking at the change around the move asks a more disciplined question: relative to a comparable transition, does the wage path bend differently when NCA status changes?
This is also why the career-ladder framing matters. A career is not just a wage level at one date. It includes the ability to move, acquire portable skills, negotiate from a credible alternative, and compound experience into better opportunities. An NCA may be associated with a higher rung at entry while changing how easily a worker can reach the next rung. To understand that possibility, we need to examine wage changes around a job transition and what happens afterward.
The career-ladder question
Two explanations organize the issue. The first treats the NCA as protection for firm-specific human capital. An employer may invest in knowledge that is valuable inside the firm but difficult to protect through an ordinary employment contract. If the worker can immediately take that knowledge to a competitor, the firm may invest less. On this account, a restriction can support training or other investment. A worker who accepts it might demand an upfront premium, and the experience acquired inside the firm might later produce faster wage growth.
The second explanation treats the NCA as a labor-market friction that the employer can use to reduce the worker’s outside option. If leaving for a competing employer becomes less credible, the worker may have less leverage in the next raise or job search. The cost need not appear as an immediate pay cut. It can emerge gradually as the worker has fewer plausible alternatives, weaker bargaining power, or less ability to use an outside offer. A negative later wage gradient would fit that account more closely than a positive entry premium would.
Neither explanation should be applied universally. Firm-specific investment is more plausible in some high-skill settings than in jobs where the employer’s investment is limited or the worker’s skills are readily transferable. But education is not a complete theory of a job, and the evidence does not directly observe every investment or negotiation. It is better treated as a central comparison in the study than as a label that settles the mechanism by itself.
That gives this series a bounded question. When workers change jobs, does signing an NCA coincide with an immediate wage jump, a faster or slower wage path afterward, or a different likelihood of leaving? Do those patterns differ between low-education and high-education workers? And what can be concluded when an estimate is imprecise? The Chicago Fed evidence answers those questions more carefully than a simple “NCAs raise wages” or “NCAs suppress wages” slogan would allow.
The opening conclusion is therefore deliberately two-sided. Legal enforceability is important, but it is not the whole labor-market story. Higher average pay in a restricted job is not proof that the restriction benefits the worker. The relevant evidence must follow the transition, compare workers from a common starting point, and keep the first paycheck separate from the years that follow. Only then can the debate over investment and bargaining become a question about observed career paths rather than competing intuitions.