When you receive legal or court papers—known as being served, or served with process—it is important to understand the nature of the documents and your obligation to file a written response to them—usually within 20-30 days, but sometimes within a shorter period of time, depending on the type of legal relief sought by the party who filed the documents (injunctive relief, etc.).

If you do not file a written response to a lawsuit, petition, or motion asking a court (or government entity or arbitrator) to take some action against you, you will be admitting the claims or allegations against you, and the court will often give the party seeking money or other assets from you everything they are asking for—with no input from you or further opportunity for you to contest the claims. If you do not respond to such a request, you are said to be in default, and the court will enter a default judgment against you, making you legally liable for the money awarded, and obligated to comply with other changes made by the court without your input, such as changes in child custody or child support.

In Missouri, when you are served with legal or court papers, it is crucial to promptly understand the documents and your duty to respond within the specified time frame, which is typically 20-30 days but can be shorter for certain urgent matters like injunctive relief. Failure to file a written response to a lawsuit, petition, or motion can result in a default judgment against you. This means the court may grant the plaintiff's requests, including monetary awards or other orders such as changes in child custody or support, without your participation. To avoid default and protect your rights, it is essential to act within the legal deadlines and consider consulting with an attorney for guidance on how to proceed.