The two types of due process are procedural due process and substantive due process. Procedural due process means that before the government can take away a life, liberty, or property interest of a person—such as a public employee’s job—the government must provide certain procedures, such as notice and a hearing to challenge to the governmental action. Substantive due process means that a law must on its substance be reasonable and rational rather than arbitrary or irrational. In other words, some laws are said to be so unreasonable as to violate due process.