What term describes the situation when an employee is dismissed without any fair or justifiable reason?

The term that accurately describes the situation when an employee is dismissed without any fair or justifiable reason is commonly referred to as unfair dismissal. This concept encompasses scenarios where the termination lacks a legitimate basis or fails to follow proper procedures, which means the dismissal does not meet legal or ethical standards.

Unfair dismissal can involve a variety of circumstances, such as a lack of evidence for poor performance or termination without adequate notice. In the context of employment law, it is important to consider that employees have rights that protect them from being let go arbitrarily or capriciously, and unfair dismissal claims often arise when those rights are violated.

While wrongful dismissal could also relate to inappropriate termination, it typically refers to a violation of a contractual agreement or specific legal obligations, such as not adhering to the terms of the employment contract. Redundancy involves layoffs due to the employer’s organizational needs rather than the employee's performance or behavior. Thus, the more comprehensive and applicable term in the question context is unfair dismissal, making it the most suitable choice.