Title VII requires an employer to reasonably accommodate an employee's religious observance or practice unless doing so would impose an undue hardship on the conduct of the business. For nearly fifty years that duty was applied through a shorthand drawn from a 1977 decision — anything more than a de minimis cost was enough to refuse. In 2023, in Groff v. DeJoy, the Supreme Court rejected that shorthand and held that an employer must show the burden of granting an accommodation would result in substantial increased costs in relation to the conduct of its particular business.
That is a meaningfully higher bar. Denials that once rested on a sentence about inconvenience now require an assessment of what the accommodation would actually cost this employer, in this operation, at this scale.
What counts as religion, and how sincerity is tested
Title VII's definition of religion, found at 42 U.S.C. § 2000e(j), covers all aspects of religious observance and practice as well as belief. It is not limited to organized religions, does not require membership in a congregation, and reaches beliefs that are unfamiliar, held by few, or inconsistent with the doctrine of a faith the employee identifies with. Social, political, or personal preferences that are not religious in nature fall outside it — but the line is drawn on the nature of the belief, not its plausibility.
Employers may make a limited inquiry when they have an objective basis for questioning sincerity or the religious nature of a practice. Doing so well means asking about the practice and the conflict, not auditing theology.
- A short written description of the belief or practice and the specific work requirement it conflicts with
- What accommodation the employee is proposing, and whether alternatives would resolve the conflict
- Whether the practice is new or long-standing — relevant, but a recently adopted or changed belief is still protected
- Any prior conduct plainly inconsistent with the asserted practice, if the employer already knows of it
- Notes of each conversation, dated, showing the employer engaged rather than reflexively declined
Watch out: demanding a letter from a clergy member is a common and risky reflex. Many protected beliefs are individually held, and requiring institutional verification tends to disadvantage exactly the employees Title VII was written to reach. If verification is truly needed, ask what the employee can supply rather than dictating a form of proof.
What Groff actually changed
Three practical points come out of the decision. First, the phrase "de minimis" no longer states the test; the employer must show substantial increased costs in relation to the conduct of its business. Second, the analysis is fact-specific and contextual — accommodations, their practical impact, and the particular employer's operations all matter, so a policy-level answer that ignores the individual request is inadequate. Third, impacts on coworkers matter only insofar as they affect the conduct of the business. Coworker dislike of a religious practice, or animosity toward accommodation generally, is not a business hardship.
The Court also indicated that an employer that concludes one accommodation would be a hardship should consider other options rather than stopping at the first denial. Functionally, that pushes Title VII practice toward the interactive back-and-forth long familiar from disability law — the sequence described in our guide to the workplace accommodation process, even though the statutes and the hardship standards remain distinct.
The requests that come up most
Sabbath observance and scheduling
Scheduling is the most common category and the one most affected by the standard change. The employer's first move should be to test whether coverage can be arranged: voluntary swaps, adjusting the rotation, moving the employee to a shift that does not conflict, or allowing use of available paid time off. Administrative effort in arranging a swap is unlikely on its own to be a substantial increased cost. Genuine, documented operational failure — a safety-critical post that cannot be covered, or repeated premium overtime that materially raises labour cost — is a different matter, and should be quantified rather than asserted.
Dress, grooming, and appearance
Head coverings, beards, hair length, and religious jewellery are usually accommodated by an exception to an appearance policy. Two justifications recur. Safety is a legitimate concern where equipment fit is at stake, but it must be specific — a respirator seal issue is an argument, a general tidiness preference is not, and alternative equipment sometimes resolves the conflict. Customer preference or brand image is the weaker justification; the EEOC has long treated customer preference as an inadequate basis for denying religious accommodation, and steering an employee to a non-customer-facing role because of religious dress raises a segregation problem of its own.
Prayer breaks and objections to specific duties
Short prayer breaks are frequently accommodated through existing break flexibility and a designated private space. Objections to performing a particular task are harder: the question becomes whether the task can be reassigned without substantial cost or a meaningful shift of burden onto others in a way that affects operations. Reassigning a marginal duty is usually workable; removing something central to the role, or requiring another employee to absorb a materially heavier load, is where the analysis tightens. Knowing which is which starts with an accurate written record of the position's duties — see our guide to job descriptions and essential functions.
Vaccination, testing, and health rules
Requests for exemption from health-related requirements are evaluated the same way: is the belief religious and sincerely held, and would accommodation impose a substantial increased cost given the actual work setting? Masking, testing, remote work, or reassignment are the usual alternatives, and the answer differs sharply between a clinical setting and a remote office.
Practical step: route religious requests to the same intake point as disability accommodation requests, with the same logging and follow-up, but keep the analytical frameworks separate. One process ensures nothing is lost; separate analysis ensures nobody imports the wrong hardship test. The free Job Accommodation Network is a useful source of scheduling and workplace-adjustment ideas even where the request is religious rather than disability-based.
If the answer has to be no
A denial should be a documented conclusion, not a reaction. Record what was requested, which alternatives were considered and why each failed, what the accommodation would have cost or disrupted in concrete terms, and who decided. Vague references to fairness, precedent, or "we'd have to do it for everyone" are not the standard — the point is the effect on this business.
Employees who believe a denial was unlawful generally proceed by filing a charge with the EEOC or a state fair employment agency, and federal charge deadlines are short — commonly 180 or 300 days depending on the state. The EEOC's guidance library is the reference for the federal framework. Punishing someone for asking is a separate violation, and requests are a recognized trigger for the exposure described in our piece on retaliation claims. Where the request also touches leave, the interaction with statutory leave entitlements is mapped in our guide to overlapping leave rights.
Quick answers
Can an employer question whether a belief is genuinely religious?
Within limits. If there is an objective basis to doubt sincerity or the religious nature of the practice, a limited inquiry is permitted. It should focus on the practice, the conflict, and possible alternatives — not on whether the belief matches a denomination's teachings or seems reasonable. Beliefs that are unfamiliar, individually held, or recently adopted remain protected.
Do coworker complaints count as undue hardship?
Not by themselves. Under the Groff analysis, coworker impacts matter only to the extent they affect the conduct of the business. Resentment about a colleague's religious practice, or general objection to accommodation, is not a business cost. Concrete operational effects — repeatedly forced overtime, coverage gaps in safety-critical roles — can be, if documented and quantified.
Must the employer grant the exact accommodation requested?
No. An alternative that actually eliminates the conflict between the work requirement and the religious practice is sufficient. What does not work is offering something that leaves the conflict in place — telling an employee to use unpaid leave every observance day, for instance, when a schedule change was available. The alternative has to resolve the problem, not relocate it.
Does a union seniority system override the duty?
A bona fide seniority system is a significant consideration and can make some accommodations unavailable, since disturbing other employees' contractual seniority rights carries real business consequences. It does not end the analysis, though. The employer should still explore voluntary swaps and other options that do not disturb the system before concluding no accommodation is possible.
A sensible order of operations
Update any policy or training that still describes the old more-than-trivial-cost test — that language is now wrong and, in a file, unhelpful. Give managers a single instruction: do not decide at the point of request; route it. Then run each request through the same sequence — understand the conflict, generate options, test the operational effect of each with real numbers, decide, and write down why. Denials built on quantified operational effects will hold; denials built on inconvenience largely will not. The neighbouring duties around accommodation, leave, and handbook policy sit together in the Workplace Rights & HR pathway, and how the handbook describes the intake route matters as much as the analysis itself — see our guide to handbooks that match actual practice.