Trans World Airlines, Inc. v. Hardison
The Supreme Court ruled that an airline did not violate federal civil rights law when it fired a clerk who refused to work Saturday shifts required by his Sabbath, because the airline had already made reasonable efforts to accommodate him.
The Court held that employers do not have to override a neutral, established seniority system or bear more than minor costs to accommodate an employee's religious practices, sharply limiting how far workplace religious accommodation must go.
“To require TWA to bear more than a de minimis cost in order to give Hardison Saturdays off is an undue hardship.”
The Court's core rule defining how much cost an employer must bear to accommodate religious practices.
How it got here: The trial court ruled for TWA and the union; the Eighth Circuit reversed as to TWA; TWA and the union separately asked the Supreme Court to review that reversal.
The Case in Depth
What happened
Larry Hardison worked in the Stores Department of TWA's Kansas City maintenance base, a unit that operated around the clock. After he joined the Worldwide Church of God, whose tenets required him to avoid work from Friday sunset to Saturday sunset, scheduling changes and seniority rules made it increasingly hard for him to avoid Saturday shifts. When no arrangement worked, Hardison stopped reporting for Saturday shifts and TWA fired him for insubordination.
The question before the Court
Did an airline have to break its seniority system or pay extra costs so an employee could always have Saturdays off for religious reasons?
Why it matters
The ruling set a low bar for what counts as 'undue hardship,' meaning employers generally do not have to incur more than trivial costs or disrupt seniority systems to accommodate workers' religious observances. This has shaped decades of workplace religious-accommodation disputes, often making it harder for employees with Sabbath or holiday observance needs to keep jobs with fixed schedules.
What changes now
This is a final merits decision reversing the Court of Appeals, meaning the ruling against TWA is undone and the airline's discharge of Hardison stands. The case did not need to reach TWA's constitutional argument about the Establishment Clause since the Court resolved the dispute on statutory grounds. The decision became the controlling interpretation of 'undue hardship' under Title VII's religious-accommodation provision for decades afterward.
What this does not decide
The Court did not decide how much cost or disruption would count as more than minimal in every case, nor did it reach TWA's constitutional Establishment Clause argument. The ruling addressed only the specific accommodations at issue here -- seniority overrides and added scheduling costs -- not every possible form of religious accommodation.
Concurrences and dissents
Dissent — Justice Marshall
“This, I submit, makes a mockery of the statute.”Marshall's objection that treating any preferential accommodation as undue hardship guts the law's purpose.
Justice Marshall argued the majority's decision gutted the statutory duty to accommodate by treating any preferential treatment of a religious observer as automatically an 'undue hardship,' when Congress specifically intended some unequal treatment to be required. He contended the record showed TWA never seriously tried to find a Saturday volunteer or explore low-cost alternatives like having Hardison pay for his own overtime replacement or transferring him back to his old department, and that these options would have cost little or nothing. He viewed the ruling as effectively nullifying Congress's 1972 accommodation requirement and warned it would force many religious minorities to choose between their faith and their livelihood.
How the Court got there
The legal reasoning, step by step
- The Court identified the governing statutory standard: under Title VII and EEOC guidance, an employer must make 'reasonable accommodations' to an employee's religious practices unless doing so would cause 'undue hardship' to the business.
- The Court treated the existing seniority system as itself a significant, neutral accommodation benefiting all employees religious and secular alike, because it minimized unwanted shift assignments across the workforce as a whole rather than favoring any one group.
- Because Title VII gives seniority systems special protection when they are not designed or operated with discriminatory intent, the Court held that requiring TWA to override its seniority rules to give Hardison Saturdays off would itself violate the statute's core goal of treating employees equally regardless of religion.
- The Court reasoned that forcing another, more senior employee to give up a preferred day off so Hardison could have Saturdays off would allocate a workplace benefit based on religion, which is exactly the kind of unequal treatment Title VII forbids in either direction.
- Applying the same logic to costs, the Court held that requiring an employer to bear more than a very small, or 'de minimis,' financial cost -- such as premium overtime pay for a substitute -- to accommodate one employee's Sabbath observance also counts as an undue hardship.
- Because TWA had tried several accommodations (shift transfers, seeking a swap, allowing modified holiday scheduling) and any further steps would have required violating the seniority system or incurring more than minimal cost, the Court concluded TWA had satisfied its legal duty to accommodate.
Doctrinal impact
Cases affected by this decision
Distinguishes Dewey v. Reynolds Metals Co. (402 U.S. 689)
The Court found this earlier tie vote inconclusive and not binding precedent on the accommodation question.