If you have been treated unfairly by your employer you may have grounds to resolve the issue legally. Your remedies include filing a personal grievance with the Employment Relations Authority claiming 'unjustifiable disadvantage'.
You can bring a personal grievance if your employer does anything unjustifiable that affects your employment or conditions of work in a way that disadvantages you. This might include:
demoting you
suspending you without pay
withdrawing work
transferring you
giving you an unjustified warning
withdrawing a benefit, such as the use of a company vehicle.
The Employment Relations Authority will decide the case objectively, by looking at whether your employer's actions were what a fair and reasonable employer could have done in the situation.