Several situations legally require reporting to the authorities: suspected abuse of a child or vulnerable adult, car accidents involving injury, death, or significant property damage, workplace fatalities and severe injuries, releases of hazardous substances, large cash transactions, certain infectious diseases, and—in narrow circumstances—knowledge of a federal felony. The specific trigger, deadline, and agency depend on the situation and sometimes on your profession. Failing to report when the law requires it can bring criminal charges, fines, civil liability, or loss of a professional license.
Suspected Abuse of a Child or Vulnerable Adult
The Child Abuse Prevention and Treatment Act requires every state to maintain a mandatory reporting system for child abuse and neglect. Under 42 U.S.C. § 5106a, state laws must require certain professionals to report known or suspected abuse.1Office of the Law Revision Counsel. 42 U.S.C. 5106a – Grants to States for Child Abuse or Neglect Prevention and Treatment Programs Mandatory reporters typically include teachers, doctors, nurses, social workers, childcare providers, and law enforcement officers. You do not need proof. A reasonable belief, based on facts available to you, that a child has been harmed or is at risk of harm is enough.
Some states go further and require every adult, regardless of profession, to report suspected child abuse. Penalties for failing to report vary by jurisdiction and can include misdemeanor or felony charges, fines, jail time, and loss of professional licenses. Because the federal law sets the framework and each state fills in the details, procedures and deadlines differ depending on where you live.2Child Welfare Information Gateway. About CAPTA: A Legislative History
Similar duties protect vulnerable adults. Federal regulations designate Adult Protective Services programs as the system for receiving reports of abuse, neglect, financial exploitation, and sexual abuse of at-risk adults, including elderly people and people with disabilities.3eCFR. 45 CFR Part 1324 Subpart D – Adult Protective Services Programs If you suspect harm, neglect, or exploitation of an older adult or someone with a disability, your state almost certainly has an APS agency or hotline that takes reports.
Motor Vehicle Accidents
Every state requires drivers to report collisions that cause injury or death. Even when no one is hurt, most states require a report once property damage exceeds a set dollar threshold, commonly around $1,000, though thresholds range from effectively $0 to $3,000 depending on the state. Reports go to local law enforcement, the state’s department of motor vehicles, or both, and many states set a deadline of a few days to a couple of weeks after the crash.
You must also stay at the scene of any reportable accident and share your name, contact information, insurance details, and vehicle information with the other driver and responding officers. Leaving the scene of an accident involving injury or death is a felony in most states and carries potential prison time. Fleeing a property-damage-only accident can still result in a misdemeanor, fines, and license suspension.
Extra Steps for Commercial Drivers
Commercial drivers face additional obligations after a qualifying accident. Federal rules require your employer to conduct post-accident drug and alcohol testing in three situations: the accident involved a fatality; the accident caused a bodily injury that required immediate off-scene medical treatment and you received a traffic citation; or the accident caused disabling vehicle damage requiring a tow and you received a citation.4eCFR. 49 CFR 382.303 – Post-Accident Testing Alcohol testing must happen within eight hours and drug testing within 32 hours. A fatality triggers testing regardless of whether you received a citation.
Workplace Deaths and Severe Injuries
Employers must report certain serious workplace incidents to the Occupational Safety and Health Administration. A work-related employee death must be reported within eight hours. An in-patient hospitalization, amputation, or loss of an eye must be reported within 24 hours.5Occupational Safety and Health Administration. 29 CFR 1904.39 – Reporting Fatalities, Hospitalizations, Amputations, and Losses of an Eye The deadlines apply when the fatality occurs within 30 days of the incident, or when the hospitalization, amputation, or eye loss occurs within 24 hours of the incident.6Occupational Safety and Health Administration. Report a Fatality or Severe Injury
Reports can go to the nearest OSHA area office, the national toll-free line at 1-800-321-6742, or OSHA’s online reporting portal. The duty rests on the employer, not the injured worker. If you are an employee and your employer fails to report, you can contact OSHA yourself.
Hazardous Substance Releases
Anyone responsible for a release of oil, chemicals, radiological material, or other hazardous substances into the environment must notify the National Response Center immediately at 1-800-424-8802.7US EPA. National Response Center The NRC is the single federal point of contact for environmental discharge reports anywhere in the United States and its territories, and a report to the NRC satisfies related notice requirements under the Clean Water Act and other federal environmental laws.
Under the Comprehensive Environmental Response, Compensation, and Liability Act, the duty is triggered when a release equals or exceeds the “reportable quantity” the EPA has set for that specific chemical. Knowingly failing to report a qualifying release, or lying about one, is a federal crime. If your business handles hazardous materials, know the reportable quantities for what you store and transport.
Large Cash and Suspicious Financial Transactions
Federal anti-money-laundering rules create separate reporting duties for ordinary businesses and for banks.
Cash Payments Over $10,000
Any business that receives more than $10,000 in cash in a single transaction, or in related transactions, must file IRS/FinCEN Form 8300 within 15 days.8Internal Revenue Service. IRS Form 8300 Reference Guide This reaches far beyond banks: car dealers, jewelers, real estate agents, attorneys, and any other trade or profession fall under the rule. The business must also give the customer a written notice by January 31 of the following year letting them know the report was filed. Civil and criminal penalties apply to businesses that fail to file.
Bank Reporting
Banks and other financial institutions must file a Currency Transaction Report for any cash transaction over $10,000, whether a deposit, withdrawal, exchange, or transfer.9Office of the Law Revision Counsel. 31 U.S.C. 5313 – Reports on Domestic Coins and Currency Transactions A separate Suspicious Activity Report must be filed when a bank has reason to believe a transaction of $5,000 or more involves illegal funds, is structured to evade reporting rules, or has no apparent lawful purpose.10eCFR. 31 CFR 1020.320 – Reports by Banks of Suspicious Transactions Banks are prohibited from telling a customer that a SAR has been filed.
Communicable Diseases
Healthcare providers must report certain infectious diseases, including tuberculosis, measles, and plague, to public health authorities. The duty comes from state and local law, not federal law. Reporting to the CDC’s national surveillance system is voluntary for states, though most participate.11Centers for Disease Control and Prevention. National Notifiable Diseases Surveillance System (NNDSS) The specific list of reportable diseases, the deadlines, and the designated agency vary by state. If you work in healthcare, check your state’s department of health for the current list and filing procedures.
Federal Felonies and the Duty to Warn
There is no general legal duty to report a crime you happen to witness. The closest federal rule is 18 U.S.C. § 4, misprision of felony, which applies only when you know a federal felony has been committed and take an affirmative step to conceal it, such as destroying evidence, lying to investigators, or helping the person responsible evade detection. Staying quiet, without any act of concealment, does not meet the threshold. A conviction carries up to three years in federal prison, a fine, or both.12Office of the Law Revision Counsel. 18 U.S.C. 4 – Misprision of Felony
A separate duty applies to mental health professionals. After the California Supreme Court’s 1976 decision in Tarasoff v. Regents of the University of California, most states adopted a “duty to warn” or “duty to protect” rule for therapists who learn that a client poses a credible threat of violence to an identifiable person. Some states require notice to law enforcement, others require warning the intended victim, and some allow either. Failing to act in those states can lead to civil liability and professional discipline.
If You’re Worried About Coming Forward
Several protections exist for people who report.
The Whistleblower Protection Act bars federal agencies from retaliating against employees or job applicants who disclose violations of law, gross mismanagement, waste of funds, abuse of authority, or substantial dangers to public health or safety.13Office of the Law Revision Counsel. 5 U.S.C. 2302 – Prohibited Personnel Practices Retaliation includes firing, demotion, suspension, harassment, and other adverse personnel actions. Separate laws extend similar protections to employees of federal contractors and grantees who report fraud or safety concerns.
All 50 states and the District of Columbia have Good Samaritan laws that protect people who assist others in emergencies. Roughly 40 states also have overdose-specific Good Samaritan laws that give some immunity from drug-related criminal charges when a person calls 911 to report an overdose. The scope varies: some states grant full immunity, others treat the call as a factor that can reduce a sentence.
Many channels accept anonymous tips. The FBI’s electronic tip form does not require your name or contact information, though providing it helps investigators follow up.14FBI. Electronic Tip Form Local Crime Stoppers programs, state child abuse hotlines, and many police reporting portals also take anonymous reports. Anonymous tips may be deprioritized when investigators cannot verify details or ask follow-up questions.
Documenting and Filing a Report
Good documentation strengthens any report. As soon as you can, write down the date, time, and location, the names and descriptions of anyone involved, and identifying details about vehicles such as make, model, color, and plate numbers. Note injuries and whether weapons were present.
If the incident involved digital communication—threats by text, online fraud, harassment on social media—take screenshots that capture the content, the sender’s profile or number, and the timestamp. Save the originals rather than deleting them, and avoid cropping or editing images before handing them over. Preserving the original format and metadata makes the evidence more useful.
How you submit depends on urgency. Call 911 for crimes in progress or immediate safety threats. For non-emergency incidents, most local police departments have online portals or a non-emergency line. Child or elder abuse reports go to a state hotline or local social services agency. Workplace incidents go to OSHA, environmental releases to the National Response Center, and large or suspicious financial transactions through IRS or FinCEN filings. Keep a copy of everything you submit and the case or incident number you receive; it will matter later for insurance claims or any legal proceeding that follows.