A deposition is a session where a party or witness answers questions from an opposing party-- under oath. Depositions are a part of the discovery process when the parties to a lawsuit gather evidence from the other side. In a slip and fall deposition, the defense lawyer will ask questions that are relevant to your personal injury claim. The most common topics will be your background and medical history, the accident, your injuries, and the impact of the injuries on your life. Some questions may seem invasive but are allowed. Other questions may seem reasonable but impermissible.