If you want to work in a hospital, you almost always have to be vaccinated. There’s no single federal law that lists every required shot for every healthcare worker, but a combination of OSHA rules, state public health laws, CDC-based hospital policies, and Medicare participation requirements pushes nearly every patient-facing hospital job toward the same answer. Medical and religious exemptions exist, and hospitals must consider them, but the default is compliance.
The Vaccines Hospitals Actually Ask For
Most hospitals build their employee immunization requirements around the CDC’s schedule for healthcare personnel.1Centers for Disease Control and Prevention. Healthcare Professionals: Adult Immunization Schedule by Age The list you’ll typically see:
- Hepatitis B, for anyone with occupational exposure to blood or bodily fluids.
- MMR (measles, mumps, rubella): two documented doses or lab evidence of immunity for measles and mumps; one dose or lab evidence for rubella.
- Varicella (chickenpox): two doses or lab evidence of immunity.
- Tdap, with a tetanus booster every ten years.
- Influenza, usually annually, sometimes with a mask-wearing alternative for those who decline.
- COVID-19, at many hospitals, as an institutional policy rather than a federal mandate.
Hepatitis B is the one vaccine a federal regulation specifically requires employers to offer. Under OSHA’s Bloodborne Pathogens standard, the shot must be made available at no charge within 10 working days of your first assignment involving potential blood exposure.2Occupational Safety and Health Administration. Standard 1910.1030 – Bloodborne Pathogens You can decline it, but your refusal has to be documented. Every other vaccine on the list is required by state law, hospital policy, or both.
Where the Requirement Comes From
Three layers stack on top of each other. Federally, hospitals that participate in Medicare and Medicaid must run an infection prevention program consistent with nationally recognized guidelines, which includes the CDC’s healthcare personnel immunization recommendations.3Centers for Medicare & Medicaid Services. Hospitals CMS also had a specific COVID-19 vaccination rule for staff at certified facilities, but that requirement ended when the public health emergency expired in May 2023.4Centers for Medicare & Medicaid Services. CMS COVID-19 PHE Report to Congress January 2025
States vary widely. Some mandate specific vaccines for hospital employees by statute; others simply require hospitals to have a vaccination policy consistent with CDC guidance or to track who has been vaccinated and who has declined.5Centers for Disease Control and Prevention. State Immunization Laws for Healthcare Workers and Patients Two hospitals in different states can have noticeably different requirements for the same role.
On top of both, hospitals set their own institutional policies, which routinely go further than the legal minimum. A hospital can require annual flu shots the state doesn’t mandate, or keep COVID-19 vaccination in place after the federal rule sunset. These policies are enforceable as conditions of employment, so long as the hospital handles exemption requests properly.
Who Counts as “Staff”
Vaccination requirements at hospitals aren’t limited to nurses and doctors. When the CMS COVID-19 rule was in force, “staff” included employees, licensed practitioners, adult students, trainees, volunteers, and contractors providing care or services.6Centers for Medicare & Medicaid Services. Hospital Attachment QSO-22-07-ALL Most hospitals apply similar definitions in their own policies. If you’ll be on-site with patient contact in any capacity, expect to prove your vaccinations.
Narrow exceptions cover people whose work is infrequent, off-site, and not part of healthcare delivery — an outside accountant, for example, or a once-a-year equipment inspector.6Centers for Medicare & Medicaid Services. Hospital Attachment QSO-22-07-ALL
Proving You’re Immune
You’ll need documentation, not assertions. Acceptable proof under CDC guidance for healthcare personnel includes written records showing the date of each dose, lab evidence of immunity, lab-confirmed history of the disease, or, for MMR, birth before 1957.7Centers for Disease Control and Prevention. Immunization of Health-Care Personnel: Recommendations of the Advisory Committee on Immunization Practices
Lost records aren’t fatal. A quantitative IgG titer measures your antibody levels and hospitals routinely accept the results in place of the original vaccination card. If the titer shows you’re not immune, you’ll need to vaccinate or revaccinate, then wait six to eight weeks before drawing a follow-up titer to avoid a falsely negative result.
Get this done before your start date. Hospitals expect complete immunization records during onboarding, and missing paperwork can push back when you begin.
Medical Exemptions Under the ADA
If a medical condition makes a required vaccine unsafe for you, you may qualify for a medical exemption. The CDC treats a contraindication as a condition that increases the risk of a serious adverse reaction, meaning the vaccine shouldn’t be given.8Centers for Disease Control and Prevention. Contraindications and Precautions Common examples include severe immunodeficiency for live vaccines, a history of anaphylaxis to a vaccine component, or encephalopathy following a prior pertussis-containing vaccine.
In the employment context, that contraindication can bring the Americans with Disabilities Act into play. The ADA bars covered employers from discriminating against a qualified individual because of disability and requires reasonable accommodation unless it would impose an undue hardship.9Office of the Law Revision Counsel. 42 USC 12112 – Discrimination To request a medical exemption, you’ll need documentation from a licensed provider explaining the condition and why the vaccine isn’t recommended.
The hospital then decides whether it can accommodate you without creating a “direct threat” to patient or workplace safety. The EEOC has said this must be an individualized assessment, not a blanket denial.10U.S. Equal Employment Opportunity Commission. What You Should Know About COVID-19 and the ADA, the Rehabilitation Act, and Other EEO Laws Before concluding that no accommodation is possible, the employer should look at alternatives such as reassignment to a non-patient-facing role.
Religious Exemptions Under Title VII
Title VII protects employees whose sincerely held religious beliefs conflict with a vaccination requirement. It defines “religion” broadly to include all aspects of religious observance, practice, and belief, and it requires employers to accommodate those beliefs unless doing so would cause undue hardship.11Office of the Law Revision Counsel. 42 USC 2000e – Definitions
Two things about this are worth knowing. First, the belief doesn’t have to come from an organized religion or track any recognized doctrine. Personal moral convictions rooted in something comparable to traditional religious belief can qualify. Purely political objections, general distrust of vaccines, or personal preferences with no religious dimension do not.
Second, the standard employers must meet to deny a religious accommodation got harder in 2023. In Groff v. DeJoy, the Supreme Court replaced the old “more than trivial cost” standard with a requirement that the employer show “substantial increased costs in relation to the conduct of its particular business.”12Supreme Court of the United States. Groff v DeJoy, 600 US 447 (2023) In a hospital setting where unvaccinated workers interact with immunocompromised patients, the safety argument can still carry weight, but the analysis is more demanding than it used to be.
When you file a religious exemption request, the EEOC says employers should generally presume you’re sincere. An employer can dig deeper only if there’s an objective reason to doubt the religious nature or sincerity of the belief, such as behavior that contradicts the claimed belief or suspicious timing.13U.S. Equal Employment Opportunity Commission. Section 12: Religious Discrimination The employer can’t reject your request simply because your practices don’t match every teaching of your faith, or because your beliefs have shifted over time.
What Working With an Exemption Actually Looks Like
An approved exemption rarely means you keep working exactly as before. Hospitals impose additional safeguards on unvaccinated workers to protect patients. Typical measures include wearing an N95 or higher-level mask during patient contact or facility-wide, more frequent screening or testing for the disease the vaccine would have prevented, additional distancing in break rooms and staff areas, and, if nothing else works, reassignment to a non-patient-care position or lower-risk unit.10U.S. Equal Employment Opportunity Commission. What You Should Know About COVID-19 and the ADA, the Rehabilitation Act, and Other EEO Laws
Reassignment is a last resort under the ADA, not the opening move. The EEOC expects employers to first consider whether you can stay in your current role with added precautions. If no combination of safeguards can eliminate a direct threat to patients, the hospital isn’t required to keep you in a patient-facing role.
If You Refuse Without an Exemption
Decline a required vaccine without an approved exemption and the hospital can discipline you up to and including termination. Federal labor law doesn’t protect refusal to comply with a lawful employer vaccination policy, and courts have consistently upheld hospital vaccination requirements as valid conditions of employment.
Hospitals have limited flexibility to look the other way. Facilities that don’t maintain compliant vaccination programs risk citations from CMS surveyors, which can escalate to loss of Medicare and Medicaid participation. That’s an existential financial risk for a hospital, which is why enforcement tends to be strict.
If Your Exemption Is Denied
A denial isn’t necessarily the end. Ask for the decision in writing and use the hospital’s internal appeal process first, ideally with review by a different decision-maker. If that doesn’t resolve it, you can file a charge of discrimination with the EEOC — under Title VII for a religious exemption denial, under the ADA for a medical one. The filing deadline is either 180 or 300 days after the adverse action depending on your state, and federal law generally requires you to file with the EEOC before suing.
The agency has pursued these claims. One healthcare system paid $150,000 to settle EEOC allegations that it denied a remote employee’s religious accommodation request without proper consideration.14U.S. Equal Employment Opportunity Commission. Rex Healthcare to Pay $150,000 in EEOC COVID-19 Vaccine Religious Accommodation Suit That said, EEOC cases take months or years, and you may lose your position in the meantime. The strength of your claim usually turns on whether the hospital genuinely engaged with your request or simply rubber-stamped a denial.
Checking a Specific Hospital’s Rules
Because the exact vaccine list, accepted documentation, exemption procedure, and deadlines all vary by employer, check the specific hospital before you assume anything. The careers or HR section of the hospital’s website usually lists health requirements for new hires, and job postings often mention vaccination requirements in the qualifications section. If it isn’t spelled out, contact HR directly. Ask before you accept the offer, so you have time to pull records, schedule a titer, or file exemption paperwork without pushing your start date back.