Sorting the matter by type
Government defense covers very different situations that can look similar at the start. A criminal investigation is run by prosecutors with agents from the FBI, an inspector general, or a state police unit, and it can lead to charges. A civil matter, such as a False Claims Act investigation or a civil enforcement action, seeks money, injunctions, or other remedies but not prison. Administrative matters involve agencies acting on licenses, contracts, or benefits. One set of facts can produce all three at once, and choices made in one, such as giving an interview, can affect the others. Knowing which tracks are open shapes every later decision.
Witness, subject, or target
In federal criminal matters, prosecutors often think of people as witnesses, subjects, or targets, and that status can change as an investigation develops. You can ask, through a lawyer, how the government currently views you, although the answer is not binding and is sometimes withheld. If agents ask to talk, you may decline and ask them to contact your lawyer; politeness and silence are compatible. Lying knowingly to federal agents is a separate federal offense, and an unplanned conversation is where that risk tends to arise. Keep any subpoenas, cards, and letters, and do not discuss the matter with coworkers who may also be contacted.
Early steps that protect options
Preserve documents and devices as they are; deleting or editing material after learning of an investigation can create a separate obstruction problem. If the matter involves your employer, remember that company counsel represents the company, not you, and you may need counsel of your own. In a first meeting we review whatever paper you have received, identify the agency and the likely type of matter, and decide who should speak to the government and when. Sometimes an early, careful contact helps; sometimes waiting is wiser. Either way, the decision should be made deliberately rather than in the hallway with an agent.