One way to recruit companies to a state is to offer tax incentives; another is to assure them that the workforce is prepared. when a state government confirms that an employer will be given the authority to terminate employment of an employee at any time without cause and gives the same assurance to the employees, those statutes are referred to as:

employment-at-will policies

Explanation:

Based on the information provided within the question it can be said that those statutes are referred to at employment-at-will policies. Like mentioned in the question this is a policy stating that a U.S employer may terminate the employment of an individual immediately without having a valid reason to do so. This is the case as long as it is not discovered that the employer fired the individual because of an illegal reason such as race, religion, gender, etc.