Non-compete agreement laws regulate contracts that restrict employees from working for competitors or starting similar businesses after leaving a job. These agreements are often used to protect business interests, trade secrets, and client relationships. 

The enforceability of non-compete agreements varies widely by state and depends on factors such as duration, geographic scope, and reasonableness. 

This guide explains how non-compete laws work in the United States, including when these agreements are valid and how courts evaluate them.