The At-Will Rule, which became common law in the United States, is a rule regarding employment relationships of an indefinite duration which emerged in the late nineteenth century as a direct result of Horace G. Wood's treatise on master-servant relationships that was published in 1877.
This type of legislation by our government causes significant suffering in our economy, and it causes unemployment. In more than 30 states in this country employees are divided into a class called "at-will employees". An at-will employee in the USA can be terminated at any time, and for any reason -- and an employer is not obligated to give any type of advanced notice.