All states require the showing of some sort of cause before drug testing of employees.

Drug Testing

The process of analyzing biological samples (such as blood, urine, or hair) to detect the presence of drugs or their metabolites.

Cause

The reason something happens, often used in legal contexts to determine the cause of an event or action leading to liability.

Employees

Employees are individuals who are hired by an employer to perform specific duties in exchange for compensation, typically in the form of wages or salary.