Unfair Dismissal

Good Day,<br> <br> I need assisted regarding my younger brother who was dismissed unfairly by his employer, he was forced and threatened to sign the document after the incident happened, they told him that he must sign the agreement saying they are moving him to another branch without offering him the opportunity to read the document before, whereas it was the dismissal letter for him, they told him that they don't want the company to be on the newspapers<br> <br> Can I get hep please.<br>