In this video, Solomon Neuhardt discusses what a deposition is, if you have to comply and why they are used.  A deposition is taken under oath and anything you say can be brought up in court.  It is advisable to have a lawyer to help you with your deposition to be sure you don't make any critical mistakes.

Depositions allow insurance companies to get formal statements from you about factual evidence and a knowledgeable attorney knows when to object and when to shut down harassing questions.