Is it true that when an employee is dismissed and they are not informed why, it is an example of procedural unfairness?

Yes, it can be considered an example of procedural unfairness if an employee is dismissed without being informed of the reasons for their dismissal. Employees have a right to know the reasons for their dismissal in order to understand the decision and potentially challenge it if they believe it to be unjust or discriminatory. Failure to provide this information can be seen as a violation of the employee's rights and can lead to legal action for unfair dismissal.