You should not be disciplined or dismissed for raising a grievance at work, especially if your grievance relates to discrimination. If this happens because you have complained about discrimination this amounts to victimisation. The law also protects you from being victimised if you have 'blown the whistle' about certain categories of wrongdoing in the workplace. These laws are designed to encourage an open culture at work where employees do not fear speaking out about criminal offences and breaches of health and safety at work, for example.