A Kalkines warning is a notice a federal agency gives you during an internal investigation telling you two things at once: you must answer questions about your official duties or be fired, and your answers cannot be used against you in a criminal prosecution.1vLex United States. Kalkines v United States, 473 F.2d 1391, 200 Ct.Cl. 570 (Fed. Cl. 1973) The trade is blunt. The government gives up the ability to use your words in court. You give up the right to stay silent. If you refuse to cooperate after receiving the warning, removal from federal service is the standard consequence.
What a Valid Warning Must Tell You
Before an agency or Office of Inspector General can compel your answers, it has to put three specific things on the record: that the questions relate directly to your official duties, that your answers cannot be used against you in a criminal proceeding, and that refusing to answer can result in dismissal.2U.S. Merit Systems Protection Board. Tyrone L Jones v Department of the Army All three elements matter. If the agency leaves one out, the compulsion may be legally defective, which becomes important later if you are removed for refusing to answer and you appeal.
Agencies usually coordinate with the Department of Justice before going this route. A formal declination of criminal prosecution is not always strictly required, but agencies typically seek one so the immunity they hand you doesn’t complicate a parallel criminal case. The original Kalkines case involved a situation where the U.S. Attorney had already declined to prosecute.1vLex United States. Kalkines v United States, 473 F.2d 1391, 200 Ct.Cl. 570 (Fed. Cl. 1973)
What the Immunity Actually Covers
The protection you receive is called derivative use immunity. The government cannot use your compelled statements against you in a criminal prosecution, and it also cannot use evidence investigators find as a result of what you said. If you tell them where a document is, they cannot go retrieve it and put it in front of a jury. The Supreme Court established this standard in Kastigar v. United States, which puts the burden on the government to show that any evidence in a later prosecution came from a source entirely independent of your compelled testimony.3Justia Law. Kastigar v United States, 406 US 441 (1972)
This is not the same as transactional immunity, which would shield you from prosecution for the underlying conduct entirely. Derivative use immunity only bars your words and their fruits. If investigators already had independent evidence — a coworker’s account, surveillance footage, financial records obtained separately — a criminal case could still move forward on that evidence alone. Your mouth is protected. The facts are not.
The bigger surprise for most employees is what the immunity does not cover at all: administrative consequences. Every word you say can be used to suspend, demote, or fire you. You can walk out of the interview safe from prosecution and still lose your job based on exactly what you told investigators.
What You Have to Do Once You Receive One
After a valid Kalkines warning, silence is no longer available. You have to answer every question that relates to your official duties, and you have to answer fully and honestly. Refusing to answer, even partially, is treated as failure to cooperate and typically leads to removal.2U.S. Merit Systems Protection Board. Tyrone L Jones v Department of the Army
Lying is worse. False statements to federal investigators are a separate crime under 18 U.S.C. § 1001, carrying up to five years in prison.4Office of the Law Revision Counsel. 18 USC 1001 – Statements or Entries Generally The immunity covers your truthful answers. It does not cover a new crime you commit inside the interview room.
Lack of Candor Is Its Own Charge
Even technically true answers can create trouble if they leave out material information or mislead by omission. Federal agencies distinguish falsification, which requires a deliberate false statement made to deceive, from lack of candor, which is broader and covers half-answers, omissions, and failure to correct something you know is inaccurate. The Merit Systems Protection Board has held that lack of candor must be knowing, but it does not require the same intent to deceive that falsification does. In a Kalkines interview, where you are already compelled to speak, lack of candor is the more realistic pitfall. Answering every question narrowly, volunteering nothing, and leaving out critical context can support a lack-of-candor charge that the Board routinely sustains.
Kalkines vs. Garrity
Federal employees often confuse Kalkines with Garrity, and the distinction matters because the two warnings put you in opposite positions. The Garrity warning comes from a 1967 Supreme Court case involving New Jersey police officers who were told they would be fired if they did not answer questions about ticket-fixing.5Justia Law. Garrity v New Jersey, 385 US 493 (1967) The Court held that statements obtained under threat of termination are coerced and cannot be used criminally.
Under Garrity, criminal prosecution is still on the table. You can choose to stay silent, and the agency cannot fire you solely for invoking that right. Anything you do say is protected from criminal use because the threat made it involuntary. Under Kalkines, the agency has already cleared the criminal path, usually through a DOJ declination, and is now granting you immunity in exchange for compelled cooperation. Refusing to answer under Kalkines will get you fired.
A Garrity warning preserves silence but leaves prosecution possible. A Kalkines warning removes prosecution but eliminates silence. Which warning you receive tells you which side of that trade the agency has chosen, and you need to understand it before you open your mouth.
Bringing Someone With You
If you are in a bargaining unit, you have the right to union representation during an investigative interview under Weingarten rights. Federal law allows a bargaining unit employee to request a union representative when they reasonably believe the examination could result in disciplinary action.6Office of the Law Revision Counsel. 5 USC 7114 – Representation Rights and Duties The agency does not have to offer it. You have to ask. If you do not ask, the interview proceeds without a representative.
Employees outside a bargaining unit do not have Weingarten rights, though they may be able to bring an attorney at their own expense depending on agency policy. Check your agency’s internal procedures or your collective bargaining agreement before the interview. Whoever comes with you can confer with you, but they generally cannot answer questions for you or obstruct the process.
A representative is not decoration. They can help you interpret confusing questions, request clarification, and keep investigators within the stated scope. With your job on the line for refusing and a federal crime on the line for lying, that help is worth arranging.
What the Interview Looks Like
Before questioning starts, investigators will hand you an acknowledgment form describing the scope of the inquiry and the protections being granted. You confirm your name, position, and understanding of the terms. Read the form carefully. It defines both your immunity and your obligations, and the listed scope tells you what the investigation is actually about, which lets you organize your thinking before you answer.
The interview usually happens in an agency conference room or OIG office. Federal policy generally requires electronic recording, and some agencies bring in a court reporter for a verbatim transcript. When questioning ends, you may be asked to review and sign a summary of what you said. A finalized transcript typically arrives weeks later. The agency then weighs your testimony alongside its other evidence to decide whether to discipline you.
The transcript becomes a permanent part of the record. If the case ends up in front of the MSPB, that transcript is the central piece of evidence. Treat the interview that way while you are in it.
If the Agency Disciplines You Afterward
If the agency removes you, suspends you for more than 14 days, or reduces your grade based on the investigation, you can appeal to the Merit Systems Protection Board. File within 30 calendar days of the effective date of the action or 30 days after you receive the agency’s written decision, whichever is later.7eCFR. 5 CFR 1201.22 – Filing an Appeal and Responses to Appeals If you and the agency agree in writing to try alternative dispute resolution before filing, the deadline extends to 60 days.8U.S. Merit Systems Protection Board. How to File an Appeal Missing the deadline can end your case before it starts.
The Board will look at whether the agency delivered a proper Kalkines warning, meaning whether you were adequately informed of your rights and obligations before being compelled to answer.2U.S. Merit Systems Protection Board. Tyrone L Jones v Department of the Army If the agency skipped an element — for instance, never telling you your answers could not be used criminally — the removal may not survive. The Board also assesses whether the penalty was reasonable given the offense, your length of service, your disciplinary history, and the seriousness of the misconduct.