Yes, an employer can fire an employee without first giving them an Employee Warning Letter. It's only considered a wrongful termination if the employer doesn't provide notice that the law requires or the employee is fired for illegal reasons. For example, if they violate Title VII of the Civil Rights Act of 1964, the Age Discrimination Act of 1967, or the Americans with Disabilities Act of 1990 by firing an employee for discriminatory reasons. It's not always realistic or in the company's best interests to provide a written warning or advanced notice before letting an employee go. Some misconducts are so serious that they warrant immediate firing. There are also instances where employers need to lay off quality employees.