Unfair dismissal refers to a situation where an employee is terminated from their job in a manner that is considered unjust, wrongful or contrary to the terms and conditions of employment. This can include situations such as being fired without proper cause, being let go due to discrimination based on age, race, gender, disability or other protected characteristics, or being dismissed for reasons not related to job performance. In many countries, there are laws in place that protect employees from unfair dismissal and provide them with the right to challenge their termination through legal channels if they believe it was unjust.