The ADA does not require an employer to provide an accommodation that would impose an undue hardship, defined as significant difficulty or expense when considered against factors including the nature and cost of the accommodation, the employer's overall financial resources, the size and structure of the facility and workforce, and the accommodation's impact on operations. Undue hardship is assessed relative to the specific employer, not against some abstract industry standard, so the same accommodation may be reasonable for a large employer and an undue hardship for a small one.

Courts require more than a generalized claim of inconvenience or cost; the employer must typically produce concrete evidence, such as actual cost estimates, operational data, or documented safety concerns, rather than speculation about hypothetical burden. A defense built after litigation begins, without contemporaneous documentation from the time the accommodation was considered, is inherently weaker and more vulnerable to a pretext-style challenge.

Because undue hardship is a fact-intensive, employer-specific inquiry, it resists a one-size-fits-all valuation and instead depends heavily on the quality of the employer's contemporaneous cost and operations record. In Juricratic, the undue-hardship dial is deliberately kept distinct from the underlying accommodation-need dial, so users can simulate how a case's exposure changes if the employer's hardship evidence turns out to be well-documented and specific versus generic and after-the-fact.

Employers build the undue hardship record at the time an accommodation is considered, not after a lawsuit is filed, gathering specific cost estimates, staffing data, and any operational or safety analysis relevant to the requested change. Plaintiff's counsel looks for evidence the employer never actually investigated the cost or feasibility of the accommodation before denying it, which undercuts the defense.