You should immediately address your concerns with your employer. Many employers have policies in place that set out a complaints process and investigation process. In the event that the concerns continue then you should seek urgent legal advice in order to escalate the matter using the appropriate platforms that may be applicable. Where the concerns relate to dismissal, redundancy or demotion then it is vital you act immediately as strict timeframes apply to seeking relief at Court or at Tribunals. When experience infringement of your rights, it is equally important that you document what happened, when it happened, who caused the infringement and the details of anyone who would be able to verify what happened.